WorldWideScience

Sample records for renewable energy source

  1. Renewable energy sources; Erneuerbare Energien

    Lenz, Volker [Deutsches BiomasseForschungsZentrum gGmbH (DBFZ), Leipzig (Germany); Kaltschmitt, Martin [Technische Univ. Hamburg-Harburg, Hamburg (Germany). Inst. fuer Umwelttechnik und Energiewirtschaft

    2012-07-01

    The development of the use of renewable energy sources in Germany in 2011 significantly was influenced by the disaster in Fukushima (Japan) and the change of course in the German energy policy. In addition, there is the amendment of the Renewable Energy Law (EEG) in an increasingly controversial area of tension between climate protection, energy utilization, cost minimization and considerations on sustainability. With this in mind, the authors of the contribution under consideration report on developments in Germany in the year 2011 in the field of energy supply and fuel supply from renewable energies. Beside the energy-economic framework conditions for the various possibilities for the use of renewable energies, the current status, developments and prospects are analysed. The contribution gives an outlook on the possible expansion of the supply of renewable energies in 2012.

  2. New renewable energy sources; Nye fornybare energikilder

    NONE

    1996-07-01

    This booklet describes in simple terms the so-called new renewable energy sources: solar energy, biomass, wind power and wave power. In addition, there are brief discussions on hydrogen, ocean thermal energy conversion (OTEC), tidal power, geothermal energy, small hydropower plants and energy from salt gradients. The concept of new renewable energy sources is used to exclude large hydropower plants as these are considered conventional energy sources. The booklet also discusses the present energy use, the external frames for new renewable energy sources, and prospects for the future energy supply.

  3. Potential of renewable and alternative energy sources

    Konovalov, V.; Pogharnitskaya, O.; Rostovshchikova, A.; Matveenko, I.

    2015-11-01

    The article deals with application potential of clean alternative renewable energy sources. By means of system analysis the forecast for consumption of electrical energy in Tomsk Oblast as well as main energy sources of existing energy system have been studied up to 2018. Engineering potential of renewable and alternative energy sources is evaluated. Besides, ranking in the order of their efficiency descending is performed. It is concluded that Tomsk Oblast has high potential of alternative and renewable energy sources, among which the most promising development perspective is implementation of gasification stations to save fuel consumed by diesel power stations as well as building wind-power plants.

  4. Modeling of renewable hybrid energy sources

    Dumitru Cristian Dragos

    2009-12-01

    Full Text Available Recent developments and trends in the electric power consumption indicate an increasing use of renewable energy. Renewable energy technologies offer the promise of clean, abundant energy gathered from self-renewing resources such as the sun, wind, earth and plants. Virtually all regions of the world have renewable resources of one type or another. By this point of view studies on renewable energies focuses more and more attention. The present paper intends to present different mathematical models related to different types of renewable energy sources such as: solar energy and wind energy. It is also presented the validation and adaptation of such models to hybrid systems working in geographical and meteorological conditions specific to central part of Transylvania region. The conclusions based on validation of such models are also shown.

  5. Life cycle assessment of renewable energy sources

    Singh, Anoop; Olsen, Stig Irving

    2013-01-01

    Governments are setting challenging targets to increase the production of energy and transport fuel from sustainable sources. The emphasis is increasingly on renewable sources including wind, solar, geothermal, biomass based biofuel, photovoltaics or energy recovery from waste. What are the environmental consequences of adopting these other sources? How do these various sources compare to each other? Life Cycle Assessment of Renewable Energy Sources tries to answer these questions based on the universally adopted method of Life Cycle Assessment (LCA). This book introduces the concept and impor

  6. Renewable energy sources 1991, part 2

    Michalicka, L.

    1991-12-01

    The International Conference on Renewable Energy Sources was held in Prague on 1-4 Jul. 1991. Part 2 of the proceedings is devoted to the use of the energy of wind, biogas, and small hydroelectric sources. The publication contains 14 contributions, of which 3 were inputted in INIS. Topics covered include: a wind power plant in Sweden and its environmental impacts, economic aspects of the introduction of alternative energy sources in Czechoslovakia, and the efficiency of application of a Fresnel lens-based solar collector.

  7. CARDOON, RENEWABLE SOURCE OF ENERGY

    Cecilia NEAGU

    2013-01-01

    Full Text Available Cardoon (Cynara cardunculus is a herbaceous perennial plant in the vegetable, artichoke, wild or garden, which belongs to the Compositae family (Asteraceae Compositae-and more precisely Cynara species and is grown specifically for the production of biomass (solid bio fuel as a pellet, or solid and liquid bio fuel, bio diesel. In this paper I have tried to highlight the profitability and economic efficiency of growing of this plant. Production capacity exceeding 2 tonnes dry matter/1000mp. The yield depends on climatic conditions, adequate soil moisture, soil nutrients, and range from 1 to 3 t/1000mp, dry. Cardoon seed contains on average 24% oil (category: 19-32%, with the same qualities as the sunflower. Quantity of seed production to 480 kgs/1000mp, while ordinary productivities range 70 to 330 kg/1000mp, always depending on the total biomass production. Growing cardooncan replace traditional crops, partly by ensuring a good profit for the farmer (double the wheat and rapeseed and bio fuel production with high energy content. Solid bio fuels (pellets, briquettes, artichokes, etc. can reach the enduser, at prices up to 30-40% lower than the price of oil. Because cardoon is a perennial plant which grows once every 10-12 years, and preparing the ground and sowing it will be carried out at intervals so large (this plant is harvested annually,it is remarkable cost reduction efficiency of growing this plant.In addition to the obvious environmental advantages by producing green energy, growing artichokes garden preserves the soil covered for the most part of the year, thereby minimizing the risk of soil erosion and limit the pollution of soil and groundwater with agrochemical products, especially in areas with intensive agriculture, because it does not require additional fertilization and/or with the use of chemical fertilizers or pesticides.

  8. Wind, hydro or mixed renewable energy source

    Yang, Yingkui; Solgaard, Hans Stubbe; Haider, Wolfgang

    2016-01-01

    While the share of renewable energy, especially wind power, increases in the energy mix, the risk of temporary energy shortage increases as well. Thus, it is important to understand consumers' preference for the renewable energy towards the continuous growing renewable energy society. We use...

  9. Renewable energy sources 1991, part 3

    Michalicka, L.

    1991-12-01

    The Fourth International Conference on Renewable Energy Sources was held at Prague Technical University from 1-4 Jul. 1991. Part 3 of the proceedings contains a report on the conference and 10 contributions, of which 2 were inputted in INIS: one deals with the economic problems of wind-, solar- and oil-driven water pumps, the other deals with the decrease in sunshine brought about by the operation of Czechoslovak nuclear power plants.

  10. Effective Land Use for Renewable Energy Sources

    Dijkman, Teunis

    2009-01-01

    The aim of this research is to determine the energy densities for different methods to produce renew-able energy. Energy density is defined here as the energy that is annually produced on a certain area. Using low, average, and high energy density scenari

  11. GLOBAL ENERGY CRISIS AND RENEWABLE ENERGY SOURCES

    Katarzyna Piechota

    2013-01-01

    The sudden development of the mankind at the turn of the 19th and 20th centuries brought along the growth in importance of exploiting the energy of different type. When uninterruptedly a demand for the energy is growing, and abilities of increasing the supply for her are limited, we can deal with the occurrence of an energy crisis. The article is moving the subject matter of an global energy crisis. A definition of an energy crisis, his genesis and effects were included in it for world econom...

  12. Microalgae: An Alternative Source of Renewable Energy

    A. Z. A. Saifullah

    2016-08-01

    Full Text Available This paper presents an overview on the potentiality of microalgae with particular emphasis as a sustainable renewable energy source for biodiesel. One of the most important dilemmas of the modern world is to supply maximal amount of energy with minimal environmental impact. The total energy demand of our planet is increasing with population growth whereas the fossil fuel reserves are dwindling swiftly. Biodiesel produced from biomass is widely considered to be one of the most sustainable alternatives to fossil fuels and a viable means for energy security and environmental and economic sustainability. But as a large area of arable land is required to cultivate biodiesel producing terrestrial plants, it may lead towards food scarcity and deforestation. Microalgae have a number of characteristics that allow the production concepts of biodiesel which are significantly more sustainable than their alternatives. Microalgae possess high biomass productivity, oils with high lipid content, fast growth rates, possibility of utilizing marginal and infertile land, capable of growing in salt water and waste streams, and capable of utilizing solar light and CO2 gas as nutrients.

  13. New renewable energy sources; Nye fornybare energikilder. Revidert utgave 2001

    NONE

    2001-06-01

    This publication presents a review of the technological, economical and market status in the field of new renewable energy sources. It also deals briefly with the present use of energy, external conditions for new renewable energy sources and prospects for these energy sources in a future energy system. The renewable energy sources treated here are ''new'' in the sense that hydroelectric energy technology is excluded, being fully developed commercially. This publication updates a previous version, which was published in 1996. The main sections are: (1) Introduction, (2) Solar energy, (3) Bio energy, (4) Wind power, (5) Energy from the sea, (6) Hydrogen, (7) Other new renewable energy technologies and (8) New renewables in the energy system of the future.

  14. Dynamic droop scheme considering effect of intermittent renewable energy source

    Wang, Yanbo; Chen, Zhe; Deng, Fujin

    2016-01-01

    This paper presents a dynamic droop control scheme for islanded microgrids dominated by intermittent renewable energy sources, which is able to perform desirable power sharing in the presence of renewable energy source fluctuation. First, allowable maximum power points of wind generator and PV ge...

  15. RENEWABLE ENERGY SOURCES IN POLAND - CONDITIONS AND POSSIBILITES OF DEVELOPMENT

    Gawlik, L.; Mokrzycki, E.; Ney, R.

    2007-07-01

    The paper describes the state of the art in renewable energy sources development. The obligation resulting from the membership of Poland in the European Union as well as from other international agreements in the scope of renewable energy sources development are described. The production of electricity, heat and biofuels in Poland is given and the perspectives of development of particular renewable energy sources in Poland are discussed in the view of potential reserves and other constrains. The economic aspects of renewable energy technologies are shown. The environmental pros and cons of biomass energy development are described. Arguments for development of renewable energy sources use are stated: the decrease of dependence from primary energy sources, the decrease the emission of green house gases and the recovery of agricultural regions of the country. In conclusion it is stated that the significance of renewable energy sources in Polish conditions is constrained to local societies. Their development should be adjusted to conditions predominating in a given region and that wider consumption of renewable energy sources should develop in conformity with sustainable development, so it is necessary to reach agreement between local societies, institutions dealing with environment protection and representatives of power sector. (auth)

  16. The Development of Renewable Energy Sources in Turkey

    Atalay ÇETİN

    2014-10-01

    Full Text Available Especially in last two decades, most of the developed and developing countries around theworld have been supporting the researches that investigate more clean and sustainable energy sources. Renewable energy sources play more important role in today’s increasingly globalized energy market because of the environmental issues and the sources of fossil fuelare becoming scarce. According to that, as a virtue of the rapidly increase in energy demand, the supply of renewable energy sources are increasingly continue around theworld. As a matter of fact, when it is compared to the 2011 rates, the consumption rate of hydro-electricity and other renewable energy sources has increased to 4.3% and % 15.2 respectively in 2012 in the world, is verifying that view.The aim of this study is to investigate the present potential and sufficiency of the main sources of renewable energy such as solar, wind, hydropower, geothermal andbiomass at Turkey. In this regard, even Turkey has a remarkable potential especially in hydro, wind, solar and geothermal energies among Europe, renewable energy sources ratio in Turkey’s total energy consumption is not rising at desired level. Furthermore becauseTurkey hasn’t got a rich fossil fuel reserves, it needs to import fossil energy sources to meet its rapidly growing energy needs. In related to this, Turkey’s current deficit has beengrowing due to the increase in fossil fuel sources prices at international energy markets. On the other side Turkey’s Green House Gases (GHGs emission has grown more thantwo times as a result of its rapidly using of fossil fuel sources due to its growing economy, industrialization and urbanization process since 1990. Within this context, as a foreigndependent country on fossil fuel energy sources (especially on crude oil and natural gas, Turkey should rapidly change its energy policy from fossil fuels to renewable energysources which are domestic, clean and much more cheaper

  17. Wind, hydro or mixed renewable energy source: Preference for electricity products when the share of renewable energy increases

    Yang, Yingkui; Solgaard, Hans Stubbe; Haider, Wolfgang

    2016-01-01

    While the share of renewable energy, especially wind power, increases in the energy mix, the risk of temporary energy shortage increases as well. Thus, it is important to understand consumers' preference for the renewable energy towards the continuous growing renewable energy society. We use...... a discrete choice experiment to infer consumers' preferences when the share of renewable energy increases. The study results indicate that consumers are generally willing to pay extra for an increasing share of renewable energy, but the renewable energy should come from a mixture of renewable energy sources...

  18. Fuels for transportation derived from renewable energy sources

    Schindler, J.; Weindorf, W.

    2001-07-01

    There are two main reasons for introducing renewable energy sources into the transportation sector: global warming on the one hand and the imminent end of cheap oil on the other. The future use of renewable energy sources for tranportation is the only sustainable solution that protects the climate and ensures energy supply - especially it is the only conceivable way to satisfy the demand for mobility of the people in the developing countries.

  19. Development of Electricity Generation from Renewable Energy Sources in Turkey

    Kentel, E.

    2011-12-01

    Electricity is mainly produced from coal, natural gas and hydropower in Turkey. However, almost all the natural gas and high quality coal are imported. Thus, increasing the shares of both hydro and other renewables in energy supply is necessary to decrease dependency of the country on foreign sources. In 2008, the total installed capacity of Turkey was around 42000 MW and 66 % of this was from thermal sources. The remaining 33 % was from hydro, which leaves only one percent for the other renewable energy sources. The share of renewable energy in the energy budget of Turkey has increased in the last two decades; however, in 2008, only 17 % of the total electricity generation was realized from renewable sources most of which was hydro. According to State Hydraulic Works (SHW) which is the primary executive state agency responsible for the planning, operating and managing of Turkey's water resources, Turkey utilizes only around 35% of its economically viable hydro potential. The current situation clearly demonstrates the need for increasing the share of renewables in the energy budget. New laws, such as the Electricity Market Law, have been enacted and the following items were identified by the Ministry of Energy and Natural Resources of Turkey among primary energy policies and priorities: (i) decreasing dependency on foreign resources by prioritizing utilization of natural resources, (ii) increasing the share of renewable energy resources in the energy budget of Turkey; (iii) minimization of adverse environmental impacts of production and utilization of natural resources. The government's energy policy increased investments in renewable energy resources; however lack of a needed legal framework brought various environmental and social problems with this fast development. The development of the share of renewable resources in the energy budget, current government policy, and environmental concerns related with renewables, and ideas to improve the overall benefits of

  20. Energy efficiency and renewable energy sources in Nordic homes

    Hyysalo, S.; Rinkinen, J. [Aalto Univ. School of Economics, Helsinki (Finland). Dept. of Management and International Business; Heiskanen, E. [National Consumer Research Centre, Helsinki (Finland)

    2011-07-01

    The role of citizens as innovators, adaptors of existing technologies and diffusers of new climate-relevant innovations has been studied extensively in recent years. Since the late 1970s, sociological and demographic research on residential energy use has consistently found great variations in energy use among similar households. It has been suggested that these variations constitute a source of innovative low-carbon practices. Yet, while there are many generic technologies available for end-use efficiency and renewables, their slow rate of diffusion suggests that they are not as such applicable to local conditions. Citizens have a key role in their adoption and adaptation to local conditions, as well in their diffusion to other users. Against this backdrop, the track 4 of NCF called for poster presentations of innovative new products, modifications of existing products, news ways of make use of existing technologies as well as such living practices that reduce energy use or enable the utilization of renewable energy sources in domestic settings in the Nordic countries. (orig.)

  1. On the global and regional potential of renewable energy sources

    Hoogwijk, Monique Maria

    2004-01-01

    In this thesis, the central research question is: what can be the contribution of renewable energy sources to the present and future world and regional energy supply system. The focus is on wind, solar PV and biomass energy (energy crops) for electricity generation. For the assessment of the economi

  2. Opportunities for renewable energy sources in Central Asia countries

    Obozov, A.J. [Project KUN (Kyrgyzstan); Loscutoff, W.V. [National Renewable Energy Lab., Golden, CO (United States)

    1998-07-01

    This report presents an overview of the state of conventional energy sources and the potential for development of renewable energy sources in the Central Asia countries of Kazakhstan, Uzbekistan, Kyrgyzstan, Turkmenistan, and Tajikistan. The region has a population of about 50 million in an area of more than four million square kilometers. The per capita gross internal product is more than $2,500, although the economy has been declining the past five years. The area has substantial coal, oil, uranium, and natural gas reserves, although they are not distributed equally among the five countries. Energy production is such that the countries do not have to rely heavily on imports. One of the problems in Central Asia is that the energy prices are substantially below the world prices. This is a factor in development of renewable energy sources. The primary renewable energy resources available are wind in Kazakhstan, solar in the entire region, biomass in Kyrgyzstan, and micro-hydropower stations in Kazakhstan and Kyrgyzstan. All of these have the potential to provide a significant amount of the required energy for the region. However, all of the countries have an abundance of various renewable energy resources. To effectively use these resources, however, a number of barriers to their development and commercialization must be overcome. These include low prices of conventional energy sources, absence of legislative support, lack of financing for new technologies, and lack of awareness of renewable energy sources by the population. A number of specific actions are proposed to overcome these barriers. These include establishment of a Central Asia coordinating council for renewable energy, development of a regional renewable energy program, and setting up a number of large demonstration projects. 16 figs.

  3. Renewable energy.

    Destouni, Georgia; Frank, Harry

    2010-01-01

    The Energy Committee of the Royal Swedish Academy of Sciences has in a series of projects gathered information and knowledge on renewable energy from various sources, both within and outside the academic world. In this article, we synthesize and summarize some of the main points on renewable energy from the various Energy Committee projects and the Committee's Energy 2050 symposium, regarding energy from water and wind, bioenergy, and solar energy. We further summarize the Energy Committee's scenario estimates of future renewable energy contributions to the global energy system, and other presentations given at the Energy 2050 symposium. In general, international coordination and investment in energy research and development is crucial to enable future reliance on renewable energy sources with minimal fossil fuel use.

  4. Renewable energy sources for sustainable tourism in the Carpathian region

    Mandryk, O. M.; Arkhypova, L. M.; Pobigun, O. V.; Maniuk, O. R.

    2016-08-01

    The use of renewable energy in sustainable tourism development of the region is grounded in the paper. There are three stages of selecting areas for projects of renewable energy sources: selection of potentially suitable area; consideration of exclusion criteria, detailed assessment of potential sites or areas. The factors of impact on spatial constraints and opportunities for building wind, solar and small hydro power plants on the parameters of sustainable tourism development in the Carpathian region were determined.

  5. Power Electronics as Efficient Interface of Renewable Energy Sources

    Blaabjerg, Frede; Chen, Zhe; Kjær, Søren Bækhøj

    2004-01-01

    renewable energy conversion system, will play an important part in our future energy supply. But other sources like microturbines, photovoltaics and fuel cell systems may also be serious contributor to the power supply. Characteristically, power electronics will be an efficient and important interface......The global electrical energy consumption is steadily rising and consequently there is a demand to increase the power generation capacity. A significant percentage of the required capacity increase can be based on renewable energy sources. Wind turbine technology, as the most cost effective...

  6. Modeling of an autonomous microgrid for renewable energy sources integration

    Serban, I.; Teodorescu, Remus; Guerrero, Josep M.

    2009-01-01

    The frequency stability analysis in an autonomous microgrid (MG) with renewable energy sources (RES) is a continuously studied issue. This paper presents an original method for modeling an autonomous MG with a battery energy storage system (BESS) and a wind power plant (WPP), with the purpose...

  7. Energy Efficiency and Importance of Renewable Energy Sources in Latvia

    Skapare, I.; Kreslins, A.

    2007-10-01

    The main goal of Latvian energy policy is to ensure safe and environmentally friendly long-term energy supply at cost-effective prices, contributing to enhance competitiveness, and to ensure safe energy transit. The Latvian Parliament approved an Energy Efficiency Strategy in 2000. Its objective is to decrease energy consumption per unit of GDP by 25% by 2010. Awareness raising, implementation of standards and economic incentives for self financing are the main instruments to increase energy efficiency, mentioned in the strategy. Latvia, as many other European Union member states, is dependent on the import of primary energy resources. The Latvian Renewable Energy strategy is still under development. The only recent study on RES was developed in the framework of a PHARE program in year 2000: "Renewable energy resource program", where three main objectives for a future RES strategy were proposed: 1. To increase the use of wood waste and low value wood and forest residues. 2. To improve efficiency of combustion technologies and to replace outdated plants. 3. To increase the use of renewables in Combined Heat and Power plants (CHP). Through the Renewable Energy and Energy Efficiency Partnership, partners will develop a set of new shared activities, and coordinate and strengthen existing efforts in this area.

  8. ACCELERATING THE ADOPTION PROCESS OF RENEWABLE ENERGY SOURCES AMONG SMES

    Mirjam Leloux

    2015-07-01

    Full Text Available By 2020, intermittent renewable small scale energy sources (e.g. wind and solar energy are expected to represent about 17% of the EU’s total electricity consumption. All national overriding energy policy objectives are to ensure competitive, secure and sustainable energy for the economy and for society. Renewable energy, allied with energy efficiency, is often found crucial to meet these goals of secure sustainable and competitive energy supplies reducing dependency on expensive fossil imports and underpinning the move towards a low carbon economy while delivering green jobs to the economy. This all contributes to national competitiveness and the jobs and economic growth agenda. However, a straight forward implementation of renewable energy options is not easy, due to various barriers and obstacles. For most SMEs, the concept of generating their own renewable energy is still more of academic than genuine interest. In general, several barriers are experienced, such as high capital investments, slow return on investment, and the lack of knowledge of the benefits. There is a need for education on the benefits and drawbacks of sustainable energy, as well as a greater contribution to costs for this to work. In this paper we describe the intermediate outcomes of a European Partnership under the name of GREAT (Growing Renewable Energy Applications and Technologies, funded under the INTERREG IVB NWE Programme. GREAT aims to encourage communities and small to medium size enterprises (SMEs in Ireland, the United Kingdon, Belgium and The Netherlands to develop technological solutions for Smart Grid, Renewable Energy and Distributive Generation; research and develop policy issues for regulatory authorities and provide structured co-operation opportunities between SMEs and research institutes / technology developers. We developed GREAT spreadsheets to facilitate SMEs in each country to calculate the return-on-investment of renewable energy sources, such as

  9. Promotion of Renewable Energy Sources in the European Union

    Roland Menges

    2015-10-01

    Full Text Available One of the important goals of European energy policy is to increase the share of renewable energy resources in the energy supply. The instruments used in the member states are not fully compatible with the rules of the European internal market. In a theoretical section, this paper analyses possible different instruments for promoting renewable energy. Some countries use feed in tariffs - using fixed prices to increase incentives for producers to invest into renewable energy, other countries use quantity-based systems like quotas that lead to a premium above the market price. In an institutional analysis we show that on the basis of effectiveness and efficiency considerations for the European Union, in the long-term quantity oriented systems of promotion are preferable if combined with elements of a capacity market. The main reason for this conclusion is that price-based systems cannot give enough incentives for backup capacities necessary to cope with intermittent production of renewable sources. In addition price-based systems violate the basic rules of the open internal European market because feed in tariffs are a considerable barrier for trade of renewable energy products.

  10. Renewable energy sources in the Mexican electrical sector

    Rodriguez, V. [Univ. Nacional Autonoma de Mexico, Div. de Estudios de Postrado, Facultad de Ingenieria, Coyoacan (Mexico); Martinez, J.H. [Univ. Nacional Autonoma de Mexico, Posgrado en Estudios Latinoamericanos, Facultad de Filosofia y Letras, Div. de Estudios de Posgrado, Coyoacan (Mexico); Ruiz, B.J.

    2008-07-01

    This paper analyzes the role of the renewable energy sources (RES) in the Mexican electrical sector in the context of the proposed renewable energy bill currently under consideration in the Mexican Congress. This paper was divided in three parts. The first part consists of a chronology of institutional background related to RES. The second part is an analysis of the coordination and management system of the Mexican electrical sector, which can facilitate the promotion of RES without significant structural changes. Finally, the pros and cons of the renewable energy bill are analyzed in order to demonstrate the need for greater coherence between the bill and the coordination system. It is concluded that when inconsistency is eliminated, RES would strongly be promoted in Mexico. (orig.)

  11. Renewable energy sources in the Mexican electricity sector

    Ruiz, B.J.; Rodriguez-Padilla, V. [Universidad Nacional Autonoma de Mexico, DEPFI, Edificio A 1 piso Bernardo Quintana, Circuito Exterior, C.U., Coyoacan, C.P. (Mexico); Martinez, J.H. [Universidad Nacional Autonoma de Mexico, Posgrado en Estudios Latinoamericanos, Facultad de Filosofia y Letras, Division de Estudios de Posgrado, Circuito Exterior, C.U., Coyoacan (Mexico)

    2008-06-15

    This paper analyzes the role of renewable energy sources (RES) in the Mexican electricity sector in the context of the proposed renewable energy bill currently under consideration in the Mexican Congress. This paper was divided into three parts. The first part presents a chronology of institutional background related to the RES. This is followed by an analysis of the coordination and management system of the Mexican electricity sector, which can facilitate the promotion and integration of the RES without significant structural changes. Finally, the pros and cons of the renewable energy bill are analyzed in order to demonstrate the need for greater coherence between the bill and the coordination system of the sector. It is concluded that when inconsistency is eliminated, RES would strongly be promoted in Mexico. (author)

  12. Electrochemical energy storage for renewable sources and grid balancing

    Moseley, Patrick T

    2015-01-01

    Electricity from renewable sources of energy is plagued by fluctuations (due to variations in wind strength or the intensity of insolation) resulting in a lack of stability if the energy supplied from such sources is used in 'real time'. An important solution to this problem is to store the energy electrochemically (in a secondary battery or in hydrogen and its derivatives) and to make use of it in a controlled fashion at some time after it has been initially gathered and stored. Electrochemical battery storage systems are the major technologies for decentralized storage systems and hydrogen

  13. New renewable source of energy from municipal solid waste plastics

    Sarker, Moinuddin; Zaman, Ashiquz; Mamunor Rashid, Mohammad

    2010-09-15

    Renewable energy plays an important role in the supply of energy. When energy sources are used, the demand for fossil fuels is reduced. Emissions from the evaporation and combustion of these traditional fossil fuels contributing to a range of environmental and health problems, causing poor air quality, and emitting greenhouse gases that contribute to global warming. Alternative fuel created from domestic sources has been proposed as a solution to these problems and many alternative fuels are being developed based on solar, wind and biomass. Natural State Research has developed different alternative hydrocarbon fuel produced from abundant waste plastic materials.

  14. Can renewable energy sources satiate Slovakia's future energy needs?

    Tomis, Igor; Koval, Peter; Janicek, Frantisek; Darula, Ivan

    2010-09-15

    The paper examines the options for replacing the current energy mix of non-renewable, conventional energy sources solely with renewable sources in the long term within the context of the Slovak environment, possibly combined with nuclear energy in the 50-year horizon. Vital needs are outlined in household energy consumption and energy consumption for industrial and transportation purposes to fulfil in order for Slovakia to become independent of foreign sources in energy supplies.

  15. A Flexible Power Electronics Configuration for Coupling Renewable Energy Sources

    Mattia Filippini

    2015-05-01

    Full Text Available A combination of series, parallel and multilevel power electronics has been investigated as a potential interface for two different types of renewable energy sources and in order to reach higher power levels. Renewable energy sources are typically dispersed in a territory, and sources, like wind and solar, allow small to medium-scale generation of electricity. The configuration investigated in this article aims at adapting the coupling solution to the specific generation characteristics of the renewable energy source to make it fit the electrical network. The configuration consists of a combination of three-phase multilevel converters and single-phase inverters, which are designed to provide flexibility, high power quality and high efficiency. A detailed analysis and simulation is performed to identify the properties in conjunction with the electrical grid requirements and the potential challenges encountered during operation. An optimized operation example of wind generation combined with solar PV generation is presented to exemplify the flexibility and benefits of the proposed configuration.

  16. SWOT analysis of the renewable energy sources in Romania - case study: solar energy

    Lupu, A. G.; Dumencu, A.; Atanasiu, M. V.; Panaite, C. E.; Dumitrașcu, Gh; Popescu, A.

    2016-08-01

    The evolution of energy sector worldwide triggered intense preoccupation on both finding alternative renewable energy sources and environmental issues. Romania is considered to have technological potential and geographical location suitable to renewable energy usage for electricity generation. But this high potential is not fully exploited in the context of policies and regulations adopted globally, and more specific, European Union (EU) environmental and energy strategies and legislation related to renewable energy sources. This SWOT analysis of solar energy source presents the state of the art, potential and future prospects for development of renewable energy in Romania. The analysis concluded that the development of solar energy sector in Romania depends largely on: viability of legislative framework on renewable energy sources, increased subsidies for solar R&D, simplified methodology of green certificates, and educating the public, investors, developers and decision-makers.

  17. Sustainability of hydropower as source of renewable and clean energy

    Luis, J.; Sidek, L. M.; Desa, M. N. M.; Julien, P. Y.

    2013-06-01

    Hydroelectric energy has been in recent times placed as an important future source of renewable and clean energy. The advantage of hydropower as a renewable energy is that it produces negligible amounts of greenhouse gases, it stores large amounts of electricity at low cost and it can be adjusted to meet consumer demand. This noble vision however is becoming more challenging due to rapid urbanization development and increasing human activities surrounding the catchment area. Numerous studies have shown that there are several contributing factors that lead towards the loss of live storage in reservoir, namely geology, ground slopes, climate, drainage density and human activities. Sediment deposition in the reservoir particularly for hydroelectric purposes has several major concerns due to the reduced water storage volume which includes increase in the risk of flooding downstream which directly effects the safety of human population and properties, contributes to economic losses not only in revenue for power generation but also large capital and maintenance cost for reservoir restorations works. In the event of functional loss of capabilities of a hydropower reservoir as a result of sedimentation or siltation could lead to both economical and environmental impact. The objective of this paper is aimed present the importance of hydropower as a source of renewable and clean energy in the national energy mix and the increasing challenges of sustainability.

  18. THE NEED FOR THE USE OF RENEWABLE ENERGY SOURCES

    Grigorash O. V.

    2016-04-01

    Full Text Available The article reveals main reasons for developing tendencies to the using of new types of energy, which are limited supply of traditional fuels and environmental problems associated with its processing. It is shown that new forms of energy plays an important role in the energy supply of many countries of the world, and in the future they can become the main sources of energy to meet the growing needs of the global economy. We reveal main reasons of the increasing interest in renewable energy, and we show the obvious prospects of their use, due to two factors. First, according to experts, the global reserves of traditional fuels are limited, and secondly, this was evidenced by the investments of leading countries in this promising industry. The article lists reasons for the need for the use of renewable energy sources in Russia. Increased consumption of natural resources has become a real threat to the security of the life of human society. The basis of solving modern social and environmental problems is a transition to a regulated process of safe use of natural energy potential to meet the vital needs of people not only in the coming decades, but in the long run. It is concluded, that the determining condition for the development of the human civilization at present and in the future would be the level of natural resources which ensures the needs of the population without making harm to the environment

  19. Consideration on a Low Power Solar Energy Renewable Source

    Andrei Marusca

    2008-05-01

    Full Text Available This paper presents the contribution of theauthors regarding the implementation of a low powersolar energy renewable source. To optimize theconversion efficiency of the solar irradiance intoelectrical energy an embedded system was designed. Theembedded system can accomplish the maximum powerpoint tracking by evaluation the output voltage andcurrent of the photovoltaic panels and calculate a propercommand for the DC-DC converter of the renewablesource. The key device in this system is a midrange 8 bitmicrocontroller that consists of acquisition, commandand control integrated hardware resources.

  20. Microalgae as a Renewable Source of Energy: A Niche Opportunity

    Simon Jegan Porphy Jegathese

    2014-01-01

    Full Text Available Algae are believed to be a good source of renewable energy because of its rapid growth rate and its ability to be cultivated in waste water or waste land. Several companies and government agencies are making efforts to reduce capital cost and operating costs and make algae fuel production commercially viable. Algae are the fastest growing plant and theoretically have the potential to produce more oil or biomass per acre when compared to other crops and plants. However, the energy efficiency ratio and carbon and water footprint for algal based biofuels still need to be evaluated in order to fully understand the environmental impact of algal derived biofuels.

  1. 48 CFR 217.175 - Multiyear contracts for electricity from renewable energy sources.

    2010-10-01

    ... electricity from renewable energy sources. 217.175 Section 217.175 Federal Acquisition Regulations System... renewable energy sources. (a) The head of the contracting activity may enter into a contract for a period not to exceed 10 years for the purchase of electricity from sources of renewable energy, as that...

  2. A Stochastic Calculus for Network Systems with Renewable Energy Sources

    Wu, Kui; Marinakis, Dimitri

    2011-01-01

    We consider the performance modeling and evaluation of network systems powered with renewable energy sources such as solar and wind energy. Such energy sources largely depend on environmental conditions, which are hard to predict accurately. As such, it may only make sense to require the network systems to support a soft quality of service (QoS) guarantee, i.e., to guarantee a service requirement with a certain high probability. In this paper, we intend to build a solid mathematical foundation to help better understand the stochastic energy constraint and the inherent correlation between QoS and the uncertain energy supply. We utilize a calculus approach to model the cumulative amount of charged energy and the cumulative amount of consumed energy. We derive upper and lower bounds on the remaining energy level based on a stochastic energy charging rate and a stochastic energy discharging rate. By building the bridge between energy consumption and task execution (i.e., service), we study the QoS guarantee under...

  3. Fiscal Policy for Renewable Energy Sources and Its Economic Impact

    Rita Helbra Tenrini; Sidiq Suryo Nugroho

    2014-01-01

    Indonesia is the largest producers of palm oil. Along with the increasing demand for renewable energy source, palm oil will turn to be a very important commodity in the future. The palm oil industry will gain more value-added if they export the commodities in processed materials rather than raw materials. On the other hands palm oil industry more likely to export raw material, because there’s no incentives for them to export processed materials. Therefore, to give an incentive to palm oil ind...

  4. The Potential of Renewable Energy Sources in Latvia

    Sakipova, S.; Jakovics, A.; Gendelis, S.

    2016-02-01

    The article discusses some aspects of the use of renewable energy sources in the climatic conditions prevailing in most of the territory of Latvia, with relatively low wind speeds and a small number of sunny days a year. The paper gives a brief description of the measurement equipment and technology to determine the parameters of the outer air; the results of the measurements are also analysed. On the basis of the data obtained during the last two years at the meteorological station at the Botanical Garden of the University of Latvia, the energy potential of solar radiation and wind was estimated. The values of the possible and the actual amount of produced energy were determined.

  5. CAS institute, US national lab ink MOU on renewable energy sources

    2009-01-01

    @@ Amemorandum of understanding (MOU) for cooperation on renewable energy sources was signed between the CAS Institute of Electrical Engineering (IEE) and the US National Renewable Energy Laboratory (NREL) on 11 November,2008, in Beijing.

  6. Stochastic Optimal Scheduling of Residential Appliances with Renewable Energy Sources

    Wu, Hongyu; Pratt, Annabelle; Chakraborty, Sudipta

    2015-07-03

    This paper proposes a stochastic, multi-objective optimization model within a Model Predictive Control (MPC) framework, to determine the optimal operational schedules of residential appliances operating in the presence of renewable energy source (RES). The objective function minimizes the weighted sum of discomfort, energy cost, total and peak electricity consumption, and carbon footprint. A heuristic method is developed for combining different objective components. The proposed stochastic model utilizes Monte Carlo simulation (MCS) for representing uncertainties in electricity price, outdoor temperature, RES generation, water usage, and non-controllable loads. The proposed model is solved using a mixed integer linear programming (MILP) solver and numerical results show the validity of the model. Case studies show the benefit of using the proposed optimization model.

  7. International Standards to Develop and Promote Energy Efficiency and Renewable Energy Sources

    NONE

    2007-07-01

    International Standards are a powerful tool for disseminating new technologies and good practices, developing global markets and supporting the harmonization of government policies on energy efficiency and renewable sources on a global scale.

  8. Waste-to-energy: A way from renewable energy sources to sustainable development

    Kothari, Richa [Babasaheb BhimRao Ambedkar University, Lucknow, U.P. (India); Tyagi, V.V.; Pathak, Ashish [Centre for Energy Studies, Indian Institute of Technology Delhi, 110016 (India)

    2010-12-15

    Nowadays, energy is key consideration in discussions of sustainable development. So, sustainable development requires a sustainable supply of clean and affordable renewable energy sources that do not cause negative societal impacts. Energy sources such as solar radiation, the winds, waves and tides are generally considered renewable and, therefore, sustainable over the relatively long term. Wastes and biomass fuels are usually viewed as sustainable energy sources. Wastes are convertible to useful energy forms like hydrogen (biohydrogen), biogas, bioalcohol, etc., through waste-to-energy technologies. In this article, possible future energy utilization patterns and related environmental impacts, potential solutions to current environmental problems and renewable energy technologies and their relation to sustainable development are discussed with great emphasis on waste-to-energy routes (WTERs). (author)

  9. Evaluation of Energy Use in Public Housing in Lagos, Nigeria: Prospects for Renewable Energy Sources

    Isidore Chukwunweike Ezema

    2016-02-01

    Full Text Available Even though domestic energy can be from either renewable or non-renewable sources, the former is preferred because of its role in reducing both the operational energy intensity and carbon footprint. Given the positive role renewable energy plays in the energy mix, this paper examined the pattern of operational energy use with particular reference to the renewable and non-renewable energy content in medium and high density public residential buildings in Lagos, Nigeria. A survey research method was adopted for primary data collection while data analysis was by descriptive statistics. The study found that renewable energy use in the residential units is very low. In contrast, there was high dependence of the occupants on non-renewable direct fuel combustion through the use of fossil fuel-driven privately-owned electricity generators for electricity supply as a result of the inadequate supply from the national grid. In addition to the relatively high operational energy intensity observed in the studied buildings, the findings have implications for the safety, health and wellbeing of the building occupants as well as for carbon emissions from the buildings and for overall environmental sustainability. Recommendations to increase renewable energy use in new buildings and as retrofits in existing buildings were made. Article History: Received Oct 18, 2015; Received in revised form January 14, 2016; Accepted January 30, 2016; Available online How to Cite This Article: Ezema, I.C., Olotuah, A.O., and Fagbenle, O.I, S. (2016 Evaluation of Energy Use in Public Housing in Lagos, Nigeria: Prospects for Renewable Energy Sources. Int. Journal of Renewable Energy Development, 5(1,15-24. http://dx.doi.org/10.14710/ijred.5.1.15-24 

  10. Biomass - alternative renewable energy source to the fossil fuels

    Koruba Dorota

    2017-01-01

    Full Text Available The article presents the fossil fuels combustion effects in terms of the dangers of increasing CO2 concentration in the atmosphere. Based on the bibliography review the negative impact of increased carbon dioxide concentration on the human population is shown in the area of the external environment, particularly in terms of the air pollution and especially the impact on human health. The paper presents biomass as the renewable energy alternative source to fossil fuels which combustion gives a neutral CO2 emissions and therefore should be the main carrier of primary energy in Poland. The paper presents the combustion heat results and humidity of selected dry wood pellets (pellets straw, energy-crop willow pellets, sawdust pellets, dried sewage sludge from two sewage treatment plants of the Holly Cross province pointing their energy potential. In connection with the results analysis of these studies the standard requirements were discussed (EN 14918:2010 “Solid bio-fuels-determination of calorific value” regarding the basic parameters determining the biomass energy value (combustion heat, humidity.

  11. Active Power Deficit Estimation in Presence of Renewable Energy Sources

    Hoseinzadeh, Bakhtyar; Silva, Filipe Miguel Faria da; Bak, Claus Leth

    2015-01-01

    following outage of SMs during cascading events. Therefore, the active power deficit following the disturbance/s may not be properly estimated by existing conventional System Frequency Response (SFR) methods in which the total inertia of the power system is required to be known. In this paper, the actual......The inertia of the power system is reduced in the presence of Renewable Energy Sources (RESs) due to their low or even no contribution in the inertial response as it is inherently available in the Synchronous Machines (SMs). The total inertia of the grid becomes unknown or at least uncertain...... active power deficit is estimated independent of grid inertia, type and number of occurred cascading events after each Load Shedding (LS) stage using shed load amount, pre-shed and post-shed Rate of Change of Frequency (ROCOF). Numerical simulations conducted on IEEE 39 bus standard test system in Dig...

  12. AC Motor Drive Fed by Renewable Energy Sources with PWM

    J. Pavalam

    2014-01-01

    Full Text Available In this fast aproaching nature of technology the ned of Electricity becomes a mandatory in developing technology. The ned of Electricity increases the power demand where the power demand met by the conventional sources of energy has some disadvantage of polution, this disadvantage can be decreased by the use of the Renewable energy sources like Fuel Cel and available solar energy. When a FUEL cel produces AC power, basicaly two stages are required for conversion first a bosting stage and second is inversion stage. In this paper the Bost inverter topology is achieved where in the conventional methods the normal DC - AC power conversion method is used where as in this paper the PWM based DC - AC inverter has ben used which is useful in reducing the harmonics in the output of the Inverter. The voltage controled output is produced in the bost inverter the curent controled output is taken from dc-dc bidirectional converter. The Fuel cel canot be relied as a whole so a Solar PV module is conected acros the Load so while the Sunlight days the PV arays generate power and in the night time the Fuel cel is used to generate power for the load. Since, the Fuel cel and PV arays can generate power in Partial load they are prefered than any other sources. When the output from the Solar PV aray is low or when the sunlight available is not eficient in generating the power a automatic switch over is provided in the junction betwen the Solar PV aray and Fuel cel so that whenever it hapens the switch automaticaly switch over to another source. The simulation results are presented to confirm the operational feature of the proposed system.

  13. The Optimal Use of Renewable Energy Sources-The Case of Lemnos Island

    Koroneos, C.; Xydis, George; Polyzakis, A.

    2012-01-01

    energy needs from Renewable Energy Sources taking into consideration a multiplicity of criteria such as environmental impacts, energy demand, energy cost, and resources availability. A series of solutions have resulted, based on deterministic model runs, providing decision makers the flexibility...

  14. Renewable energy sources: resistance to change; Energies renouvelables: les resistances au changement

    Dubreuil, Th.; Audrain-Demey, G.; Attal, J.Ph.; Lormeteau, B. [Nantes Univ., Droit de l' Environnement et du Developpement Durable, 44 (France)

    2011-10-15

    This paper is the summary of a conference day organised by the students of the 'environment and sustainable development law' Master of Nantes university (France). This interdisciplinary meeting brought together professionals of renewable energy industries who could testify about the resistance of both politicians and the public opinion against the energy transition towards renewable sources. Legal, political, sociological and cultural considerations are put forward to explain this resistance. The French specificity, with an over-representation of nuclear energy, a constraining legal framework for renewable energies, a regional opposition to renewable energy projects (NIMBY syndrome), and a lack of trust in the political class and in its representatives are as many factors that have contributed to build this French 'cultural exception'. (J.S.)

  15. Accounting Methodology for Source Energy of Non-Combustible Renewable Electricity Generation

    Donohoo-Vallett, Paul [US Department of Energy, Washington, DC (United States)

    2016-10-01

    As non-combustible sources of renewable power (wind, solar, hydro, and geothermal) do not consume fuel, the “source” (or “primary”) energy from these sources cannot be accounted for in the same manner as it is for fossil fuel sources. The methodology chosen for these technologies is important as it affects the perception of the relative size of renewable source energy to fossil energy, affects estimates of source-based building energy use, and overall source energy based metrics such as energy productivity. This memo reviews the methodological choices, outlines implications of each choice, summarizes responses to a request for information on this topic, and presents guiding principles for the U.S. Department of Energy, (DOE) Office of Energy Efficiency and Renewable Energy (EERE) to use to determine where modifying the current renewable source energy accounting method used in EERE products and analyses would be appropriate to address the issues raised above.

  16. Fuel Cells for Balancing Fluctuation Renewable Energy Sources

    Mathiesen, Brian Vad

    2007-01-01

    In the perspective of using fuel cells for integration of fluctuating renewable energy the SOFCs are the most promising. These cells have the advantage of significantly higher electricity efficiency than competing technologies and fuel flexibility. Fuel cells in general also have the advantage of...... with hydrogen production or electric cars, and on the other hand using biomass and bio fuels [11]. Fuel cells can have an important role in these future energy systems.......In the perspective of using fuel cells for integration of fluctuating renewable energy the SOFCs are the most promising. These cells have the advantage of significantly higher electricity efficiency than competing technologies and fuel flexibility. Fuel cells in general also have the advantage...... flexibility, such as SOFCs, heat pumps and heat storage technologies are more important than storing electricity as hydrogen via electrolysis in energy systems with high amounts of wind [12]. Unnecessary energy conversions should be avoided. However in future energy systems with wind providing more than 50...

  17. PROSPECTS OF ENERGY EFFICIENCY IMPROVEMENT AND DEVELOPMENT OF THE RENEWABLE ENERGY SOURCES IN PROVINCE OF VOJVODINA

    Gvozdenac, D.; Ciric, R.; Tesic, M.

    2007-07-01

    The paper presents the outcome of the research in the field of energy efficiency improvement and development of the renewable energy sources in province of Vojvodina (Serbia). The summarized results of the paper are: - Potentials for energy efficiency improvement in Vojvodina, - Potentials for development of renewable energy sources in Vojvodina, - Proposal of measures of the energy policy for the promotion of research and development (R and D) which will use local scientific and technical potentials in the field of renewable energy sources and energy efficiency and improve the sustainability on the long run. - Proposal of measures for the energy policy in the domain of renewable energy sources development and energy efficiency and estimation of potentials for improvements by applying proposed measures in order to accomplish established tasks. - Synthesizing findings and proposals in the Action Plan of the Executive Council of the Autonomous Province of Vojvodina for the realization of the medium term program as well as the establishment of the monitoring plan for the assessment of program objectives progress. (auth)

  18. Renewable energy sources. European Commission papers; Energies renouvelables. Documents de la Commission Europeenne

    NONE

    1997-05-01

    The ''Directive on the Promotion of Electricity from Renewable Sources of Energy in the Internal Electricity Market'' was adopted in September 2001. Its purpose is to promote an increase in the contribution of renewable energy sources to electricity production in the internal market for electricity and to create a basis for a future Community framework. Energie-Cites provides in this document a summary of its opinion on the Green Paper and on Alterner II and gives a proposal for an Action Plan concerning the White Paper. (A.L.B.)

  19. Comparison study between a Renewable Energy Supply System and a supergrid for achieving 100% from renewable energy sources in Islands

    Xydis, George

    2013-01-01

    Numerous efforts have been done for achieving the maximum penetration of renewable energy sources (RESs) in the autonomous grids of Greek islands, which never exceeded 10%, despite the exceptional wind and solar potential. Large fluctuations on demand during summer, winter, and 24-h period...... in combination with the technical restrictions of diesel generators of the existing conventional power stations are a major concern of power supply system. Reversing the roles of diesel generators and wind farms (WFs), to use WF as the basic energy source and diesel generators as stand-by system changed in fact...... the stochastic behavior of wind energy to the demand, to provide the system with guaranteed power. This Wind–Hydro Plants in combination with the most adequate RES forming an Renewable Energy Supply System (RESS), increase further the economical penetration of RES into autonomous grids up to 90% or even 100...

  20. Renewable energy made easy free energy from solar, wind, hydropower, and other alternative energy sources

    Craddock, David

    2008-01-01

    Studies have shown that the average North American family will spend more than a quarter of a million dollars on energy in a lifetime. What many other countries, including Germany, Spain, France, Denmark, China, Brazil, and even Iceland, have realized is that there is a better way to power our homes, businesses, and cars by using renewable energy sources. Recently, the United States has begun to understand the importance of reducing its reliance on coal, natural gas, nuclear power, and hydropower plants, which comprise the majority of the nation's electricity, due to increasing oil prices.

  1. Fiscal Policy for Renewable Energy Sources and Its Economic Impact

    Rita Helbra Tenrini

    2014-01-01

    Full Text Available Indonesia is the largest producers of palm oil. Along with the increasing demand for renewable energy source, palm oil will turn to be a very important commodity in the future. The palm oil industry will gain more value-added if they export the commodities in processed materials rather than raw materials. On the other hands palm oil industry more likely to export raw material, because there’s no incentives for them to export processed materials. Therefore, to give an incentive to palm oil industry, the government of Indonesia should give fiscal incentives to encourage palm oil industry to produce processed materials. The purpose of this study is to identify the appropriate fiscal policy to palm oil industry and to estimate the economic impact due to the implementation of fiscal incentives policy. The methodology used in this research is analysis using Social Accounting Matrix (SAM that can give an overview the impact of policy implementation to factors of production, an institution such as government and household, and other sectors including palm oil sectors itself. The result of this study that is the proposed fiscal policy in palm oil industry was fiscal incentives in the form of VAT exemption. Economic impact analysis that came from SAM indicates that implementation of the policy has an overall positive impact to factors of production, institution and sector.

  2. The Examining of Prospective Teachers? Views about Renewable and Non-Renewable Energy Sources: A Case Study of Turkey

    Hasiloglu, Mehmet Akif

    2014-01-01

    The aim of this study is to determine prospective teachers? views about renewable and non-renewable energy sources. To collect data, a questionnaire with 5 open-ended questions was conveyed to 463 prospective teachers selected from Agri Ibrahim Cecen University. The results showed that almost three fourths of the prospective teachers tend to…

  3. European Union's renewable energy sources and energy efficiency policy review. The Spanish perspective

    De Alegria Mancisidor, Itziar Martinez; Diaz de Basurto Uraga, Pablo; Ruiz de Arbulo Lopez, Patxi [Departamento de Organizacion de Empresas, Escuela Tecnica Superior de Ingenieria de Bilbao, Universidad del Pais Vasco (Spain); Martinez de Alegria Mancisidor, Inigo [Departamento de Electronica y Telecomunicaciones, Escuela Tecnica Superior de Ingenieria de Bilbao, Universidad del Pais Vasco (Spain)

    2009-01-15

    The European Union's (EU) energy objectives, legislation and programmes are determinant for the current strategy for the promotion of renewable energy sources (RES) and energy efficiency (EE) in Spain, which is becoming a key element for its international competitiveness. Firstly, this article explores the evolution of the EU's energy strategy, focusing on the adopted legislations and programmes to promote RES and EE. It concludes with an analysis of the impact of those measures in Spain. (author)

  4. Dynamic energy management employing renewable energy sources in IP over DWDM networks

    Chen, Xin; Phillips, Chris; Wang, Jiayuan

    2013-01-01

    The continued growth of energy consumption has been one of the main constraints for the development of the Internet. The increasing emissions of greenhouse gases associated with electricity generation also raise public concern for the environment. In this paper, we propose a dynamic energy...... management framework employing renewable energy sources in IP over DWDM core networks. The main concept is to combine infrastructure sleeping and virtual router migration to improve the network energy efficiency. By using the energy source information provided by the smart grid, the nodes that are powered...

  5. Renewable energy sources at decisive turning; Le energie rinnovabili a una svolta decisiva

    Riboldi, S.

    2000-11-01

    The renewable energy sources will be very important for planetary environmental emergency and for technological evolution. [Italian] Marginali da molti anni, le rinnovabili diverranno di primaria importanza grazie all'emergenza ambientale planetaria e all'evoluzione tecnologica. Siamo giunti finalmente a una vera svolta epocale?.

  6. Renewable energy source use in Brazil; Utilizacao de energia renovavel no Brasil

    Newman, Joseph; Rosa, Fabio, e-mails: jnewman@winrock.org.br, e-mail: fabrosa@terra.com.br

    2003-08-15

    This article evaluates the programs (PROINFA and CCC) developed by the State to deploy a policy of using renewable energy sources in Brazil, highlighting the biodiesel, which should be inserted in its energy matrix.

  7. Rural population and renewable energy sources: Experiences of the Republic of Serbia

    Pucar Mila

    2006-01-01

    Full Text Available During the last decade of the twentieth century the use of green (renewable energy has become the imperative not only in developed countries worldwide, but also in poorer countries like Asia and Africa. The change from traditional to renewable energy sources carries valuable improvements in environmental protection and economic efficacy. This paper through individual examples, explores the possibility of replacing traditional with renewable energy sources such as solar, wind, geothermal, energy of small hydroelectric power plants, etc. worldwide and in rural Serbian communities.

  8. The Analysis of the Usage And Perspectives of Renewable Energy Sources in Lithuania

    Dominykas Vasarevičius

    2011-08-01

    Full Text Available The paper presents the current situation with the renewable energy sources in Lithuania. An overview of legislation promoting the production and usage of renewable energy in Lithuania is presented. Renewable energy production methods suitable for Lithuanian conditions, their advantages and disadvantages are discussed. It is shown that there is no any promotion from the state for usage of solar energy in private households. The potential of solar energy usage is determined. In order to show the effectiveness of solar thermal energy utilization under similar climatic conditions presented the example of promotion policy model and its results in Poland.Article in Lithuanian

  9. An approach for evaluating the impact of an intermittent renewable energy source on transmission expansion planning

    Rongrit CHATTHAWORN; Surachai CHAITUSANEY

    2015-01-01

    We propose a new robust optimization approach to evaluate the impact of an intermittent renewable energy source on transmission expansion planning (TEP). The objective function of TEP is composed of the investment cost of the transmission line and the operating cost of conventional generators. A method to select suitable scenarios representing the intermittent renewable energy generation and loads is proposed to obtain robust expansion planning for all possible scenarios. A meta-heuristic algorithm called adaptive tabu search (ATS) is employed in the proposed TEP. ATS iterates between the main problem, which minimizes the investment and operating costs, and the subproblem, which minimizes the cost of power generation from conventional generators and curtailments of renewable energy generation and loads. The subproblem is solved by nonlinear programming (NLP) based on an interior point method. Moreover, the impact of an intermittent renewable energy source on TEP was evaluated by comparing expansion planning with and without consideration of a renewable energy source. The IEEE Reliability Test System 79 (RTS 79) was used for testing the proposed method and evaluating the impact of an intermittent renewable energy source on TEP. The results show that the proposed robust optimization approach provides a more robust solution than other methods and that the impact of an intermittent renewable energy source on TEP should be considered.

  10. An Analysis of the Development of Renewable Energy Sources in the Western Minority Areas

    Deng Yanfei; Liu Mingyang

    2016-01-01

    The biggest challenge for China’s energy is sustainability of the environment. Espe-cially in recent years, global warming, frequent natural disasters, and the serious reduction of the natural resources and energy are gravely affecting normal production and mankind’s existence. Burn-ing large amounts of fossil fuel produces green-house gases and polluted soot. The development and utilization of renewable energy is extremely ur-gent. In other words, renewable energy sources must grow briskly. Under the guidance of the na-tional policy of the“13 th Five Year Plan”, the de-velopment and utilization of renewable energy sources in the Western Minority Areas must be strengthened based on local conditions, by paying attention to relevant personnel training, and en-couraging innovation and entrepreneurship so that the development of local renewable energy sources can reach a new level.

  11. Renewable energy annual 1995

    NONE

    1995-12-01

    The Renewable Energy Annual 1995 is the first in an expected series of annual reports the Energy Information Administration (EIA) intends to publish to provide a comprehensive assessment of renewable energy. This report presents the following information on the history, status, and prospects of renewable energy data: estimates of renewable resources; characterizations of renewable energy technologies; descriptions of industry infrastructures for individual technologies; evaluations of current market status; and assessments of near-term prospects for market growth. An international section is included, as well as two feature articles that discuss issues of importance for renewable energy as a whole. The report also contains a number of technical appendices and a glossary. The renewable energy sources included are biomass (wood), municipal solid waste, biomass-derived liquid fuels, geothermal, wind, and solar and photovoltaic.

  12. Guide to funding sources for renewable energy in schools and colleges

    NONE

    2000-07-01

    This guide has been designed specifically to identify sources of funding for renewable energy projects in schools, such as a wind generator or a solar water heating system. It is intended for teachers or Friends of associations. (author)

  13. SIMULATION OF THE SYSTEMS WITH RENEWABLE ENERGY SOURCES USING HOMER SOFTWARE

    FIRINCĂ S.D.

    2015-06-01

    Full Text Available This paper simulates by using the Homer software, a distributed energy system with capacity below 1 MW. Among the renewable energy sources are used wind and solar energy. For photovoltaic panels, we are considering two situations: fixed panels, oriented at 45° and panels with tracking system with two axis. Simulation results contain information regarding operation hours of the system throughout the year, energy produced from the renewable energy sources, energy consumption for the load, and excess of electrical energy. The Homer software also allows an economic analysis of these systems.

  14. SIMULATION OF THE SYSTEMS WITH RENEWABLE ENERGY SOURCES USING HOMER SOFTWARE

    FIRINCĂ S.D.

    2015-12-01

    Full Text Available This paper simulates by using the Homer software, distributed energy systems with capacity below 1 MW. Among the renewable energy sources are used wind and solar energy. For photovoltaic panels, we are considering two situations: fixed panels, oriented at 45 ° and panels with tracking system with two axis. Simulation results contain information regarding operation hours of the system throughout the year, energy produced from the renewable energy sources, energy consumption for the load, and excess of electrical energy. The Homer software also allows an economic analysis of these systems.

  15. The Economics of Renewable Energy Sources into Electricity Generation in Tanzania

    Baraka Kichonge

    2016-01-01

    Full Text Available The study analyzes the economics of renewable energy sources into electricity generation in Tanzania. Business as usual (BAU scenario and renewable energy (RE scenario which enforce a mandatory penetration of renewable energy sources shares into electricity generations were analyzed. The results show total investment cost for the BAU scenario is much lower as compared to RE scenario while operating and maintenance variable costs are higher in BAU scenario. Primary energy supply in BAU scenario is higher tied with less investment costs as compared to RE scenario. Furthermore, the share of renewable energy sources in BAU scenario is insignificant as compared to RE scenario due to mandatory penetration policy imposed. Analysis concludes that there are much higher investments costs in RE scenario accompanied with less operating and variable costs and lower primary energy supply. Sensitivity analysis carried out suggests that regardless of changes in investments cost of coal and CCGT power plants, the penetration of renewable energy technologies was still insignificant. Notwithstanding the weaknesses of renewable energy technologies in terms of the associated higher investments costs, an interesting result is that it is possible to meet future electricity demand based on domestic resources including renewables.

  16. The integration of renewable energy sources into electric power transmission systems

    Barnes, P.R.; Dykas, W.P.; Kirby, B.J.; Purucker, S.L. [Oak Ridge National Lab., TN (United States); Lawler, J.S. [Univ. of Tennessee, Knoxville, TN (United States)

    1995-07-01

    Renewable energy technologies such as photovoltaics, solar thermal power plants, and wind turbines are nonconventional, environmentally attractive sources of energy that can be considered for electric power generation. Many of the areas with abundant renewable energy resources (very sunny or windy areas) are far removed from major load centers. Although electrical power can be transmitted over long distances of many hundreds of miles through high-voltage transmission lines, power transmission systems often operate near their limits with little excess capacity for new generation sources. This study assesses the available capacity of transmission systems in designated abundant renewable energy resource regions and identifies the requirements for high-capacity plant integration in selected cases. In general, about 50 MW of power from renewable sources can be integrated into existing transmission systems to supply local loads without transmission upgrades beyond the construction of a substation to connect to the grid. Except in the Southwest, significant investment to strengthen transmission systems will be required to support the development of high-capacity renewable sources of 1000 MW or greater in areas remote from major load centers. Cost estimates for new transmission facilities to integrate and dispatch some of these high-capacity renewable sources ranged from several million dollars to approximately one billion dollars, with the latter figure an increase in total investment of 35%, assuming that the renewable source is the only user of the transmission facility.

  17. Information systems and technology transfer programs on geothermal energy and other renewable sources of energy

    Lippmann, M.J.; Antunez, E.

    1996-01-01

    In order to remain competitive, it is necessary to stay informed and use the most advanced technologies available. Recent developments in communication, like the Internet and the World Wide Web, enormously facilitate worldwide data and technology transfer. A compilation of the most important sources of data on renewable energies, especially geothermal, as well as lists of relevant technology transfer programs are presented. Information on how to gain access to, and learn more about them, is also given.

  18. Green power grids: how energy from renewable sources affects network and markets

    Mureddu, Mario; Chessa, Alessandro; Scala, Antonio; Damiano, Alfonso

    2015-01-01

    The increasing attention to environmental issues is forcing the implementation of novel energy models based on renewable sources, fundamentally changing the configuration of energy management and introducing new criticalities that are only partly understood. In particular, renewable energies introduce fluctuations causing an increased request of conventional energy sources oriented to balance energy requests on short notices. In order to develop an effective usage of low-carbon sources, such fluctuations must be understood and tamed. In this paper we present a microscopic model for the description and the forecast of short time fluctuations related to renewable sources and to their effects on the electricity market. To account for the inter-dependencies among the energy market and the physical power dispatch network, we use a statistical mechanics approach to sample stochastic perturbations on the power system and an agent based approach for the prediction of the market players behavior. Our model is a data-d...

  19. Covering of heating load of object by using ground heat as a renewable energy source

    Čenejac Aleksandra R.

    2012-01-01

    Full Text Available Rational use of energy, improving energy performance of buildings and use of renewable energy sources are the most important measures for reducing consumption of non-renewable primary energy (solid, liquid, and gaseous fuels, environmental protection and for the future sustainable development of mankind. In the total primary energy consumption great part is related to building industry, for heating spaces in which people stay and live. Renewable energy sources (RES present natural resources and they are one of the alternatives that allow obtaining heat for heating buildings, and by that they provide a significant contribution to the energy balance of a country. This paper analyzes the participation of ground source as RES, when the vertical (the probe in the ground and horizontal (registry in the ground heat exchangers are used for covering heating load of the building.

  20. People’s Perceptions on Renewable Energy Sources Penetration Prospects in the Khorezm Province, Uzbekistan

    Bahtiyor R. ESHCHANOV

    2011-12-01

    Full Text Available The energy sectors of fossil fuel-rich Kazakhstan, Turkmenistan and Uzbekistan are heavily dependent on non-renewable resources. The abundance of these resources acts as a retardant the process of energy diversification in the above mentioned Central Asian states. Nevertheless, the future diversification of energy sources is an inevitable process due to many reasons; man-made climate change, the need for transition to reliable and secure energy sources and availability of a vast potential for renewable energy generation being the most important ones.

  1. Multi-port power electronic interface for renewable energy sources

    Jiang, Wei

    Energy intensive products and services are penetrating people's daily life as well as different sectors of industry during recent decades. Further effort to improve efficiency, reduce green house gas and hazardous particle emission lead to the emergence of the "more electric" concept in several industries including transportation. This trend, however, burdens the aging power system and existing local power networks. To offer a remedy to the problem and a smooth transition to a more reliable, more diverse, and more efficient power grid of the future, the concept of Multi-port Power Electronic Interface (MPEI) for localized power processing is introduced in this dissertation, which interfaces and manages various sources, loads and storages. Different means of integrating multiple sources and storages into the existing power system are studied and evaluated; the six phase-leg structure is chosen to interface five sources/loads: fuel cell, wind turbine, solar cell, battery and utility grid. Partitioning of source-interface and load-interface on a system level as well as analysis and modeling on small signal level are performed. A novel control structure for source-interface is proposed in the design, which forms Controlled Quasi Current Source (CQCS) during the load sharing operation and offers several salient advantages: • Inherent average current-mode control. • Easy share of steady state current/power. • Share of load dynamics for better source protection. Local control loops for various input ports are designed based on linearized system model; controller performance is tuned to accommodate the characteristics of different sources. To maintain a sustainable operation, different modes of operation are defined for MPEI; detailed state-transition with associated events are also defined in each operation mode. Prototype of MPEI is built and control system is implemented digitally in a digital signal processor; steady state and transient performance of MPEI is

  2. Designing and Testing Energy Harvesters Suitable for Renewable Power Sources

    Synkiewicz, B.; Guzdek, P.; Piekarski, J.; Zaraska, K.

    2016-01-01

    Energy harvesters convert waste power (heat, light and vibration) directly to electric power . Fast progress in their technology, design and areas of application (e.g. “Internet of Things”) has been observed recently. Their effectiveness is steadily growing which makes their application to powering sensor networks with wireless data transfer reasonable. The main advantage is the independence from wired power sources, which is especially important for monitoring state of environmental parameters. In this paper we describe the design and realization of a gas sensor monitoring CO level (powered by TEG) and two, designed an constructed in ITE, autonomous power supply modules powered by modern photovoltaic cells.

  3. Renewable energy resources

    Ellabban, Omar S.; Abu-Rub, Haitham A.; Blaabjerg, Frede

    2014-01-01

    Electric energy security is essential, yet the high cost and limited sources of fossil fuels, in addition to the need to reduce greenhouse gasses emission, have made renewable resources attractive in world energy-based economies. The potential for renewable energy resources is enormous because...... they can, in principle, exponentially exceed the world's energy demand; therefore, these types of resources will have a significant share in the future global energy portfolio, much of which is now concentrating on advancing their pool of renewable energy resources. Accordingly, this paper presents how...... renewable energy resources are currently being used, scientific developments to improve their use, their future prospects, and their deployment. Additionally, the paper represents the impact of power electronics and smart grid technologies that can enable the proportionate share of renewable energy...

  4. Experimental investigation of jojoba as a renewable energy source

    Al-Widyan, Mohamad I. [Mechanical Engineering Department, Jordan University of Science and Technology, PO Box 3030, Irbid 22110 (Jordan); Al-Muhtaseb, Mu' taz A. [Mechanical Engineering Department, Faculty of Engineering, University of Jordan, PO Box 961060, Amman 11196 (Jordan)

    2010-08-15

    This work examined jojoba (oil and cake) as possible alternative fuel sources. Jojoba is a shrub that grows very well in deserts and its cake is the solid part produced upon processing of the jojoba seeds for oil extraction. In this study, pure jojoba oil and 50/50 blends with diesel fuel were tested as fuels in a single cylinder diesel engine. The diesel fuel was the baseline of comparison throughout the runs. The cake was tested for both direct combustion (pellets) and as a substrate for biogas production. The pellets were formed by compacting the cake in cylindrical dies using a hydraulic press while the biogasification was conducted in an anaerobic digester model Bioflo 110 from Brunswick. The findings indicate that the optimum injection pressure for jojoba oil in the engine is 210 bars at which engine speed was maximum (2700 rpm), NO{sub x} and CO emissions as well as exhaust temperature were minimum. Using jojoba cake for biogasification resulted in a yield of about 600 ml biogas per 400 g of jojoba cake. Burning jojoba compacted cake (pellets) for direct combustion in a stove indicated that jojoba cake sustained a temperature in excess of 300 C for a reasonable amount of time and that the cake was very competitive to wood and has energy content more than most types of wood. Overall, it may be stated that both jojoba oil and cake hold real promise as alternative energy sources. (author)

  5. Renewable energy sources and the realities of setting an energy agenda.

    Potocnik, Janez

    2007-02-09

    The European Commission has been devoting considerable attention to energy issues. This Perspective describes recent progress in Europe toward achieving goals for renewable energy use, and the role that technology can play, as well as the new Strategic Energy Package.

  6. On the optimal timing of switching from non-renewable to renewable resources: dirty vs clean energy sources and the relative efficiency of generators

    Elettra Agliardi; Luigi Sereno

    2012-01-01

    We develop a model on the optimal timing of switching from non-renewable to renewable energy sources with endogenous extraction choices under emission taxes, subsidies on renewable resources and abatement costs. We assume that non-renewable resources are "dirty" inputs and create environmental degradation, while renewable resources are more environmentally friendly, although they may be more or less productive than the exhaustible resources. The value of the switching option from non-renewabl...

  7. Financial mechanisms for renewable energy sources; Mecanismos financeiros para fontes de energia renovaveis

    Moya Chaves, Francisco David [Universidade Estadual de Campinas (UNICAMP), SP (Brazil)

    2006-07-01

    This work presents three different financial mechanisms in the world as choices in the electricity generation investment from alternative energy sources. It shows a description of the following methods developed in the world: payment capacity, social costs of energy, and markets that trade renewable energies certificates. Finally, a recommendation about the best choice that could be implemented in Brazil is suggested. Given the importance in the use of the renewable energy of electric energy generation, most of the electric systems in the world have developed mechanisms to encourage the use of alternative energies. With the capacity payment the power plants that employ alternative sources, can receive extra payment as benefits for their initial investment. A possibility could be fixing taxes for the generation of electricity with fossil fuel that could finance the renewable energy sources. A renewable energy market dealing with trade able certificates, forces the electricity purchasers to have a percentage from alternative energies of the totally energy acquired. In this way the forced purchasing of energy from power plants which use energy certificates allows the expansion of these technologies. (author)

  8. Control and design of full-bridge three-level converter for renewable energy sources

    Yao, Zhilei; Xu, Jing; Guerrero, Josep M.

    2015-01-01

    of rectifier diodes is high and filter is large in traditional voltage-source converters in a wide input-voltage range. In order to solve the aforementioned problems, a full-bridge (FB) three-level (TL) converter is proposed. It can operate at both two-level and three-level modes, so it is suitable for wide......Output voltage of renewable energy sources, such as fuel cell and PV cell, is often low and varies widely with load and environmental conditions. Therefore, the high step-up DC-DC converter is needed between renewable energy sources and the grid-connected inverter. However, voltage stress...

  9. Renewable energy sources - an option for the future. Federal Government voices opinion

    1988-08-31

    Despite unfavourable market conditions, the Federal Government wants to continue the research and development of renewable energy sources up to the 'threshold of market maturity' and - wherever practical - increase them. A 'technological gap' should be avoided. However, the current lack of economy of these forms of energy cannot be compensated for by permanent subsidies. This information is contained in the Federal Government's reply to a parliamentary question from the coalition parties of the CDU/CSU and FDP on the subject of 'Production and use of renewable energy sources in the Federal Republic of Germany'.

  10. The renewable energies sources in France 1970-2000; Les energies renouvelables en France 1970-2000

    NONE

    2001-07-01

    The objective of this report is to describe the energy production from renewable sources in France since 1970. In France the rate of using renewable energy sources is unequal. Some of them as hydro energy show a confirmed industrial and commercial interest when other techniques have not still reach the same level of maturity. The renewable energy sources chosen to calculate the electric and thermal production of France are: for electric power, hydro energy, wind energy, solar energy, geothermal energy, the urban wastes, the wood wastes, the harvesting residues, the biogas. For the thermal production, the thermal solar energy, the geothermal energy, the urban wastes, the wood and wood wastes, the harvesting residues, the biogas and bio fuels. The figures are marked in thirty tables. (N.C.)

  11. Synchronization of grid-connected renewable energy sources under highly distorted voltages and unbalanced grid faults

    Hadjidemetriou, Lenos; Kyriakides, Elias; Blaabjerg, Frede

    2013-01-01

    renewable energy systems. Therefore, the performance of the new PLL can increase the quality of the injected power under abnormal conditions and in addition enable the renewable energy systems to provide the appropriate support to the grid under balanced and unbalanced grid faults.......Renewable energy sources require accurate and appropriate performance not only under normal grid operation but also under abnormal and faulty grid conditions according to the modern grid codes. This paper proposes a novel phase-locked loop algorithm (MSHDC-PLL), which can enable the fast...... and dynamic synchronization of the interconnected renewable energy system under unbalanced grid faults and under highly harmonic distorted voltage. The outstanding performance of the suggested PLL is achieved by implementing an innovative multi-sequence/harmonic decoupling cell in order to dynamically cancel...

  12. A review of renewable energy sources, sustainability issues and climate change mitigation

    Phebe Asantewaa Owusu

    2016-12-01

    Full Text Available The world is fast becoming a global village due to the increasing daily requirement of energy by all population across the world while the earth in its form cannot change. The need for energy and its related services to satisfy human social and economic development, welfare and health is increasing. Returning to renewables to help mitigate climate change is an excellent approach which needs to be sustainable in order to meet energy demand of future generations. The study reviewed the opportunities associated with renewable energy sources which includes: Energy Security, Energy Access, Social and Economic development, Climate Change Mitigation, and reduction of environmental and health impacts. Despite these opportunities, there are challenges that hinder the sustainability of renewable energy sources towards climate change mitigation. These challenges include Market failures, lack of information, access to raw materials for future renewable resource deployment, and our daily carbon footprint. The study suggested some measures and policy recommendations which when considered would help achieve the goal of renewable energy thus to reduce emissions, mitigate climate change and provide a clean environment as well as clean energy for all and future generations.

  13. Risk factors during construction of power plants using renewable energy sources

    Nefedova Lyudmila Veniaminovna

    2016-12-01

    Full Text Available The authors consider main characteristics of modern development of renewable energy sources (RES. It is dedicated that there are some technical and economic barriers to the widespread use of renewable energy. For example, RES are inconstancy in time and space and have low density of energy flow. High capital intensity and cost price, long-term construction, a considerable degree of different kinds of risk, lack of competitiveness with hydrocarbon species generation in the existing regulatory environment are also inherent to RES. The role of the regulatory framework is shown according to perspective plans of construction of power plants using renewable energy sources. The main requirements which are applied to measures of state support of construction industry of renewable energy development are formulated. Current condition of construction industry of RES in Russia is assessed. The problems of risks which arise during construction of renewable energy facilities according to results of practical use of RES are discussed. And it is rather important to use stage assessment for the construction phase of the project during risk analysis of construction of alternative energy sources. The main groups of RES risks are described. The importance of regulatory and resource risks for effective development of renewable energy in Russia according to the method of strategic planning with the identification of the adverse effects of gradation factors are determined. The analysis of financial risks types and methods of its management during construction power generation projects based on different types of renewable energy resources are made. In the end of the article the authors make a conclusion, that the development of projects for the construction of power plants with the use of innovative technical solutions to ensure minimal risks to the environment and safe operation in various climatic conditions is a priority.

  14. Sources of evaluation of nuclear and renewable energy contained in the local press

    van der Pligt, J.; Spears, R.; Eiser, J.R.

    1987-01-01

    Examined the sources of evaluative coverage concerning nuclear power and renewable alternatives contained in local UK daily press coverage. 10 categories of source were defined for their relevance to the nuclear debate and energy issues. Out of these, only pronuclear industries and national governme

  15. Evaluating the sustainability of an energy supply system using renewable energy sources: An energy demand assessment of South Carolina

    Green, Cedric Fitzgerald

    Sustainable energy is defined as a dynamic harmony between the equitable availability of energy-intensive goods and services to all people and the preservation of the earth for future generations. Sustainable energy development continues to be a major focus within the government and regulatory governing bodies in the electric utility industry. This is as a result of continued demand for electricity and the impact of greenhouse gas emissions from electricity generating plants on the environment by way of the greenhouse effect. A culmination of increasing concerns about climate change, the nuclear incident in Fukushima four years ago, and discussions on energy security in a world with growing energy demand have led to a movement for increasing the share of power generation from renewable energy sources. This work studies demand for electricity from primarily residential, commercial, agricultural, and industrial customers in South Carolina (SC) and its effect on the environment from coal-fired electricity generating plants. Moreover, this work studies sustainable renewable energy source-options based on the renewable resources available in the state of SC, as viable options to supplement generation from coal-fired electricity generating plants. In addition, greenhouse gas emissions and other pollutants from primarily coal-fired plants will be defined and quantified. Fundamental renewable energy source options will be defined and quantified based on availability and sustainability of SC's natural resources. This work studies the environmental, economic, and technical aspects of each renewable energy source as a sustainable energy option to replace power generation from coal-fired plants. Additionally, social aspect implications will be incorporated into each of the three aspects listed above, as these aspects are explored during the research and analysis. Electricity demand data and alternative energy source-supply data in SC are carried out and are used to develop and

  16. Opportunities of energy supply of farm holdings on the basis of small-scale renewable energy sources

    Efendiev, A. M.; Nikolaev, Yu. E.; Evstaf'ev, D. P.

    2016-02-01

    One of the major national economic problems of Russia is raising of agricultural production, which will provide strategic security and sustainable supply of the population with provisions. Creation of subsidiary small holdings, farm holdings, and peasant farm holdings will require addressing issues of energy supply. At considerable distance of small farms from centralized energy systems (by fuel, electricity and thermal energy) it is proposed to create a system of local energy networks on the basis of low-powered power plants using renewable energy sources (RES). There is economic unreasonableness of use of imported components of small power plants. Creation of new combined small power plants on renewable energy sources produced by domestic manufacturers is recommended. Schemes of arrangements of small power plants based on renewable energy sources are proposed, variants and characteristics of a basic source are provided—biogas plants developed by the authors. Calculations revealed that heat and power supply of self-contained farms distant from small power plants based on renewable energy sources is 2.5-2.6 times cheaper than from centralized networks. Production of biogas through anaerobic fermentation of organic waste of cattle complexes is considered as the basis. The analysis of biowaste output in various cattle farms is carried out, and the volume of biogas is determined to meet the requirements of these farms in electrical and thermal energy. The objective of the present article is to study the possibility of creating small combined power plants in Russia based on renewable sources of energy for independent consumers.

  17. POLICIES AND MEASURES FOR RENEWABLE ENERGY SOURCES AND ACHIEVEMENT OF TARGETS BY 2020 IN CROATIA

    Igor Raguzin

    2010-01-01

    Full Text Available This paper is considering set up a longer-term perspective and plan of actions for the development of renewable energy infrastructure in Croatia in accordance with the new Croatian Energy Sector Development Strategy. Overall target till the year 2020 has been calculated in accordance with effort sharing methodology used for Directive 2009/28/EC. The paper presents some main existing policies and measures for achieving this ambitious target, including feed-in tariffs, guarantees of origin, and greenhouse gas emissions taxation. It is addressed the necessity for creating enabling environment for promotion of renewable energy sources and gradually remove barriers for its stronger penetration on the energy market.

  18. Development of renewable energy sources in Germany in 2011; Entwicklung der erneuerbaren Energien in Deutschland 2011

    Musiol, Frank; Nieder, Thomas; Ruether, Thorsten; Walker, Marion [Zentrum fuer Sonnenenergie- und Wasserstoff-Forschung Baden-Wuerttemberg (ZSW), Stuttgart (Germany)

    2012-10-15

    With its energy concept of September 2010 and the energy transformation decision of June 2011, The German government has set ambitious goals for renewable energy sources: By 2020, at least 35 % of the electricity demand is to be covered by renewables; for 2030, the goal is 50 %. In consequence, the wind power industry, solar industry and others have valiantly proved their efficiency in 2011. Power generation from renewables increased dramatically in 2011 as a result of enhanced expansion of power generation capacities and favourable climate conditions. With a total of 20.3 %, wind power, solar power and other renewables for the first time ever had a bigger share in power supply than coal and nuclear power.

  19. Summary for Policy Makers: Intergovernmental Panel on Climate Change Special Report Renewable Energy Sources (SRREN)

    Arvizu, Dan; Bruckner, Thomas; Christensen, John; Devernay, Jean-Michel; Faaij , Andre; Fischedick, Manfred; Goldstein, Barry; Hansen, Gerrit; Huckerby , John; Jager-Waldau, Arnulf; Kadner, Susanne; Kammen, Daniel; Krey, Volker; Kumar, Arun; Lewis , Anthony; Lucon, Oswaldo; Matschoss, Patrick; Maurice, Lourdes; Mitchell , Catherine; Moomaw, William; Moreira, Jose; Nadai, Alain; Nilsson, Lars J.; Nyboer, John; Rahman, Atiq; Sathaye, Jayant; Sawin, Janet; Schaeffer, Roberto; Schei, Tormod; Schlomer, Steffen; Sims, Ralph; von Stechow, Christoph; Verbruggen, Aviel; Urama, Kevin; Wiser, Ryan; Yamba, Francis; Zwickel, Timm

    2011-05-08

    The Working Group III Special Report on Renewable Energy Sources and Climate Change Mitigation (SRREN) presents an assessment of the literature on the scientific, technological, environmental, economic and social aspects of the contribution of six renewable energy (RE) sources to the mitigation of climate change. It is intended to provide policy relevant information to governments, intergovernmental processes and other interested parties. This Summary for Policymakers provides an overview of the SRREN, summarizing the essential findings. The SRREN consists of 11 chapters. Chapter 1 sets the context for RE and climate change; Chapters 2 through 7 provide information on six RE technologies, and Chapters 8 through 11 address integrative issues.

  20. GIS to support cost-effective decisions on renewable sources applications for low temperature geothermal energy

    Gemelli, Alberto; Diamantini, Claudia; Longhi, Sauro

    2013-01-01

    Through the results of a developed case study of information system for low temperature geothermal energy, GIS to Support Cost-effective Decisions on Renewable Sources addresses the issue of the use of Geographic Information Systems (GIS) in evaluating cost-effectiveness of renewable resource exploitation regional scale. Focusing on the design of a Decision Support System, a process is presented aimed to transform geographic data into knowledge useful for analysis and decision-making on the economic exploitation of geothermal energy. This detailed description includes a literature review and technical issues related to data collection, data mining, decision analysis for the informative system developed for the case study. A multi-disciplinary approach to GIS design is presented which is also an innovative example of fusion of georeferenced data acquired from multiple sources including remote sensing, networks of sensors and socio-economic censuses. GIS to Support Cost-effective Decisions on Renewable Sources ...

  1. BPS, energy efficiency and renewable energy sources for buildings greening and zero energy cities planning harmony and ethics of sustainability

    Todorovic, Marija S. [University of Belgrade, Serbia and Southeast University (China)

    2011-07-01

    Traditional village houses now use renewable materials and energy sources and this paper presents the intrinsic harmony of these buildings' greening and their sustainability. The paper covers building technical systems, sustainable energy supply, and the importance of renewable raw materials (RMS) for sustainable development. This study investigated the role of building dynamic behavior and optimized energy efficiency in reducing thermal loads significantly. A preliminary design for sustainable energy efficient settlements with net zero energy buildings is proposed and a comprehensive multidisciplinary engineering study was done which identified the technical feasibility of sustainable village energy and water supplies using solar or wind technologies. Overall, through analysis of sustainability definitions and possible ways to achieve sustainability, the study demonstrated that this can only be brought about by interdisciplinary interaction and finding the right balance between materiality and spirituality, science and art, and between technological development and concern for cultural and other human values.

  2. Renewable energy education in Turkey

    Acikgoz, Caglayan [Department of Chemical and Process Engineering, Faculty of Engineering, Bilecik University, P.O.11030, Bilecik (Turkey)

    2011-02-15

    Utilization of renewable energy sources and the application of environmentally sound energy technologies are essential to sustainable development and will help to secure the quality of living and the well-being of the future generations. Turkey presently has considerable renewable energy sources. The most important renewable sources are hydropower, wind, solar, geothermal, and biomass. The use of renewable energy as a topic to study energy and its forms permits a novel way to motivate students, particularly those who energy topics taking conscience with the environment. This paper presents the analysis and classification of renewable energy sources and how to find out their origin and a way to motivate students in energy topics related to renewable sources and also, the development of didactic competencies in special blended learning arrangements for educationalists, trainers and lecturers in adult education in the field of renewable energies in Turkey. (author)

  3. Energy concepts for self-supplying communities based on local and renewable energy sources

    Petersen, Jens-Phillip

    2016-01-01

    that virtually allow a heating energy and electricity supply fully based on local, renewable energy resources. The most feasible and cost-efficient variant is the use of local food production waste in a CHP plant feeding a district heating grid. The overall aim is to show that a self-sufficient heat......The reduction of GHG emissions in buildings is a focus area of national energy policies, because buildings are responsible for a major share of energy consumption. Policies to increase the share of renewable energies and energy efficiency measures are implemented at local scale. Municipalities......, as responsible entities for physical planning, can hold a key role in transforming energy systems towards carbon-neutrality, based on renewable energies. The implementation should be approached at community scale, which has advantages compared to only focusing on buildings or cities. But community energy...

  4. SPATIOTEMPORAL MODELING FOR ASSESSING COMPLEMENTARITY OF RENEWABLE ENERGY SOURCES IN DISTRIBUTED ENERGY SYSTEMS

    L. Ramirez Camargo

    2015-07-01

    Full Text Available Spatial assessments of the potential of renewable energy sources (RES have become a valuable information basis for policy and decision-making. These studies, however, do not explicitly consider the variability in time of RES such as solar energy or wind. Until now, the focus is usually given to economic profitability based on yearly balances, which do not allow a comprehensive examination of RES-technologies complementarity. Incrementing temporal resolution of energy output estimation will permit to plan the aggregation of a diverse pool of RES plants i.e., to conceive a system as a virtual power plant (VPP. This paper presents a spatiotemporal analysis methodology to estimate RES potential of municipalities. The methodology relies on a combination of open source geographic information systems (GIS processing tools and the in-memory array processing environment of Python and NumPy. Beyond the typical identification of suitable locations to build power plants, it is possible to define which of them are the best for a balanced local energy supply. A case study of a municipality, using spatial data with one square meter resolution and one hour temporal resolution, shows strong complementarity of photovoltaic and wind power. Furthermore, it is shown that a detailed deployment strategy of potential suitable locations for RES, calculated with modest computational requirements, can support municipalities to develop VPPs and improve security of supply.

  5. Spatiotemporal Modeling for Assessing Complementarity of Renewable Energy Sources in Distributed Energy Systems

    Ramirez Camargo, L.; Zink, R.; Dorner, W.

    2015-07-01

    Spatial assessments of the potential of renewable energy sources (RES) have become a valuable information basis for policy and decision-making. These studies, however, do not explicitly consider the variability in time of RES such as solar energy or wind. Until now, the focus is usually given to economic profitability based on yearly balances, which do not allow a comprehensive examination of RES-technologies complementarity. Incrementing temporal resolution of energy output estimation will permit to plan the aggregation of a diverse pool of RES plants i.e., to conceive a system as a virtual power plant (VPP). This paper presents a spatiotemporal analysis methodology to estimate RES potential of municipalities. The methodology relies on a combination of open source geographic information systems (GIS) processing tools and the in-memory array processing environment of Python and NumPy. Beyond the typical identification of suitable locations to build power plants, it is possible to define which of them are the best for a balanced local energy supply. A case study of a municipality, using spatial data with one square meter resolution and one hour temporal resolution, shows strong complementarity of photovoltaic and wind power. Furthermore, it is shown that a detailed deployment strategy of potential suitable locations for RES, calculated with modest computational requirements, can support municipalities to develop VPPs and improve security of supply.

  6. Using Remote Sensing Data for Integrating different Renewable Energy Sources at Coastal Site in South Italy

    Calaudi, Rosamaria; Feudo, Teresa Lo; Calidonna, Claudia Roberta;

    2016-01-01

    Italian coastal sites have the advantage of favorable climatic conditions to use mixed renewable energy sources, such as solar and wind. Harbors are safe places to install wind turbines where wind conditions are almost offshore. Space-borne remote sensing can provide information to determine solar...... and wind energy production potential cheaper than usual observational activity to identify and assess suitable areas. Here, we present a case study for both energy resources assessment from satellite in harbors....

  7. Analysis The Potential Implementation And Use Of The Renewable Energy Sources In The Murmansk Region

    Chekardovskiy, S. M.; Zakirzakov, A. G.; Gordievskaya, E. F.

    2017-01-01

    The paper presents the analysis of the geographical location of the Murmansk region and possibilities of using different renewable energy sources. Present the results of the analysis of using and practicality wind power to wind turbines to generate electricity. The paper presents of average annual consumption of electricity settlements in the Murmansk region, options for replacing the use of diesel fuel by wind energy and recommendations for possible areas of utilization of wind energy.

  8. Capacity Optimization of Renewable Energy Sources and Battery Storage in an Autonomous Telecommunication Facility

    Dragicevic, Tomislav; Pandžić, Hrvoje; Škrlec, Davor

    2014-01-01

    This paper describes a robust optimization approach to minimize the total cost of supplying a remote telecommunication station exclusively by renewable energy sources (RES). Due to the intermittent nature of RES, such as photovoltaic (PV) panels and small wind turbines, they are normally supported...

  9. Promoting electricity from renewable energy sources -- lessons learned from the EU, U.S. and Japan

    Haas, Reinhard; Meyer, Niels I.; Held, Anne; Finon, Dominique; Lorenzoni, Arturo; Wiser, Ryan; Nishio, Ken-ichiro

    2007-06-01

    The promotion of electricity generated from Renewable Energy Sources (RES) has recently gained high priority in the energy policy strategies of many countries in response to concerns about global climate change, energy security and other reasons. This chapter compares and contrasts the experience of a number of countries in Europe, states in the US as well as Japan in promoting RES, identifying what appear to be the most successful policy measures. Clearly, a wide range of policy instruments have been tried and are in place in different parts of the world to promote renewable energy technologies. The design and performance of these schemes varies from place to place, requiring further research to determine their effectiveness in delivering the desired results. The main conclusions that can be drawn from the present analysis are: (1) Generally speaking, promotional schemes that are properly designed within a stable framework and offer long-term investment continuity produce better results. Credibility and continuity reduce risks thus leading to lower profit requirements by investors. (2) Despite their significant growth in absolute terms in a number of key markets, the near-term prognosis for renewables is one of modest success if measured in terms of the percentage of the total energy provided by renewables on a world-wide basis. This is a significant challenge, suggesting that renewables have to grow at an even faster pace if we expect them to contribute on a significant scale to the world's energy mix.

  10. Nine Level Inverter with Boost Converter from Renewable Energy Source

    Maruthu Pandiyan.R

    2015-01-01

    Full Text Available A new single phase nine level multilevel inverter is proposed. The input to the proposed nine level multilevel inverter is obtained from solar panel . The solar energy obtained from the solar panel is not constant and it varies with times. In order to maintain the constant voltage obtained from the solar panel the boost converter is used to maintain the constant output voltage using MPPT ( Perturb and observe algorithm algorithm. Then the buck boost converter output voltage is stored in the battery bank. Finally the battery energy is connected to the 9 level inverter circuits. The harmonics in the inverter is eliminated by using the fuzzy logic controller. The gate pulse for the multilevel inverter is given by the fuzzy logic controller which in turn reduces the harmonics in the inverter. Then the inverter output is connected to the grid are some application.

  11. The role of local renewable energy sources in regional energy production: The case of South-East Finland

    M. Laihanen, A. Karhunen, T. Ranta

    2016-01-01

    Full Text Available The focus of the paper was on discussing the challenges and possibilities of promoting and utilising various renewable energy sources at the regional level. National obligations and the rising prices of fossil fuels have put pressure on energy producers and end users to start utilising renewable energy sources. South-East Finland has one of Europe’s highest forest industry concentrations, and renewable energy sources such as wood fuels are utilised widely. The study utilises earlier regional studies and statistics as well as new results from this study. These results are combined into regional potentials which are presented by regional energy balance. The analyses provide important background information for decision making. The various regions of Finland have different operational environments and local participants need motivation and activation regarding these local possibilities.

  12. Wind Power: A Renewable Energy Source for Mars Transit Vehicle

    Flynn, Michael; Kohout, Lisa; Kliss, Mark (Technical Monitor)

    1998-01-01

    The Martian environment presents significant design challenges for the development of power generation systems. Nuclear-based systems may not be available due to political and safety concerns. The output of photovoltaics are limited by a solar intensity of 580 W/sqm as compared to 1353 W/sqm on Earth. The presence of dust particles in the Mars atmosphere will further reduce the photovoltaic output. Also, energy storage for a 12-hour night period must be provided. In this challenging environment, wind power generation capabilities may provide a viable option as a Martian power generation system. This paper provides an analysis of the feasibility of such a system.

  13. Hydrogen and renewable energy sources integrated system for greenhouse heating

    Ileana Blanco

    2013-09-01

    Full Text Available A research is under development at the Department of Agro- Environmental Sciences of the University of Bari “Aldo Moro” in order to investigate the suitable solutions of a power system based on solar energy (photovoltaic and hydrogen, integrated with a geothermal heat pump for powering a self sustained heated greenhouse. The electrical energy for heat pump operation is provided by a purpose-built array of solar photovoltaic modules, which supplies also a water electrolyser system controlled by embedded pc; the generated dry hydrogen gas is conserved in suitable pressured storage tank. The hydrogen is used to produce electricity in a fuel cell in order to meet the above mentioned heat pump power demand when the photovoltaic system is inactive during winter night-time or the solar radiation level is insufficient to meet the electrical demand. The present work reports some theoretical and observed data about the electrolyzer operation. Indeed the electrolyzer has required particular attention because during the experimental tests it did not show a stable operation and it was registered a performance not properly consistent with the predicted performance by means of the theoretical study.

  14. ANALYSIS OF THE TRAINING NEEDS IN RENEWABLE ENERGY SOURCES FOR AGRICULTURAL SECTOR

    Zuzana PALKOVA

    2014-06-01

    Full Text Available Global climate changes, the greenhouse gas emissions and reduced sources of traditional fossil fuels are one of themost serious environmental problems of present time. This fact was the starting point for Directive 2009/28/EC,which defined two objectives in the area of RES, the mandatory 20% share of RES in gross final energyconsumption in the European Community and the mandatory 10% share of RES in transport, which all MemberStates must achieve by 2020. In 2011 was the share of renewable energy sources in total energy production in theEuropean Union 13%. Promoting the use of renewable sources for electricity, heat, hot water, as well as promotingthe use of biomass energy and construction of energy efficient buildings brings, in addition to environmentalaspects, the development of innovative technologies, the transition to an energy-efficient economy and increaseemployment opportunities. Development in clean technologies becomes a strategic not only in terms of ecology, buthas a significant impact on economic development and employment. This paper presents an analysis of trainingneeds in clean technologies and renewable energy sources and through the Leonardo da Vincis’ projects – AVARESand C-TEST – supported by European Commission to show how to increase the attractiveness and accessibility ofvocational education and training for employees in agricultural sector in the European Union.

  15. Sources of evaluation of nuclear and renewable energy contained in the local press

    1987-01-01

    Examined the sources of evaluative coverage concerning nuclear power and renewable alternatives contained in local UK daily press coverage. 10 categories of source were defined for their relevance to the nuclear debate and energy issues. Out of these, only pronuclear industries and national government produced more positive than negative appraisals of nuclear power. However, detractors of nuclear power were more varied, the most prolific category being the general public. Alternative technolo...

  16. Renewable energy sources and climate change mitigation. Special report of the Intergovernmental Panel on Climate Change (IPCC)

    Edenhofer, O. (Potsdam Institute for Climate Impact Research (PIK), Potsdam (Germany)); Pichs Madruga, R. (Centro de Investigaciones de la Economia Mundial (CIEM), Hanoi (Viet Nam)); Sokona, Y. (African Climate Policy Centre, United Nations Economic Commission for Africa, Addis Ababa (Ethiopia)) (and others)

    2012-07-01

    Climate change is one of the great challenges of the 21st century. Its most severe impacts may still be avoided if efforts are made to transform current energy systems. Renewable energy sources have a large potential to displace emissions of greenhouse gases from the combustion of fossil fuels and thereby to mitigate climate change. If implemented properly, renewable energy sources can contribute to social and economic development, to energy access, to a secure and sustainable energy supply, and to a reduction of negative impacts of energy provision on the environment and human health. This Special Report on Renewable Energy Sources and Climate Change Mitigation (SRREN) impartially assesses the scientific literature on the potential role of renewable energy in the mitigation of climate change for policymakers, the private sector, academic researchers and civil society. It covers six renewable energy sources - bioenergy, direct solar energy, geothermal energy, hydropower, ocean energy and wind energy - as well as their integration into present and future energy systems. It considers the environmental and social consequences associated with the deployment of these technologies, and presents strategies to overcome technical as well as non-technical obstacles to their application and diffusion. The authors also compare the levelized cost of energy from renewable energy sources to recent non-renewable energy costs. (Author)

  17. Energy from Waste: Reuse of Compost Heat as a Source of Renewable Energy

    G. Irvine

    2010-01-01

    Full Text Available An in-vessel tunnel composting facility in Scotland was used to investigate the potential for collection and reuse of compost heat as a source of renewable energy. The amount of energy offered by the compost was calculated and seasonal variations analysed. A heat exchanger was designed in order to collect and transfer the heat. This allowed heated water of 47.3oC to be obtained. The temperature could be further increased to above 60oC by passing it through multiple tunnels in series. Estimated costs for installing and running the system were calculated. In order to analyse these costs alternative solar thermal and ground source heat pump systems were also designed. The levels of supply and economic performance were then compared. A capital cost of £11,662 and operating cost of £1,039 per year were estimated, resulting in a cost of £0.50 per kWh for domestic water and £0.10 per kWh for spatial heat. Using the heat of the compost was found to provide the most reliable level of supply at a similar price to its rivals.

  18. Optimal combination of energy storages for prospective power supply systems based on Renewable Energy Sources

    Weitemeyer, Stefan; Siemer, Lars; Agert, Carsten

    2016-01-01

    Prospective power supply systems based on Renewable Energy Sources require measures to balance power generation and load at all times. The utilisation of storage devices and backup power plants is widely suggested for this purpose, whereas the best combination is still to be found. In this work, we present a modelling approach to systematically study scenarios of future power supply systems with a high share of electricity originating from wind and solar resources. By considering backup as a subordinate source of electricity with energy-only costs, the approach is independent of the actual full-load hours of the backup power plants. Applying the approach to multi-year meteorological data for Germany, cost-optimised combinations of storage devices and backup power are identified. We find that even in scenarios with significant excess generation capacities there is a need for storage devices or backup power plants with discharging power on the same order as the average load to balance the system at all times. F...

  19. Social Attitudes towards Wind Farms and other Renewable Energy Sources in Poland

    Bożena Mroczek

    2014-12-01

    Full Text Available Introduction. The development of the wind power industry brings benefits for humans and the natural environment through the reduction of pollution emitted into the atmosphere, the creation of new jobs, and the improvement of the energy security of the country. At the same time, however, it causes people’s anxiety about adverse effects of wind farms on the environment and human health. The purpose of the study was to analyze the social attitudes of Poles toward wind power and other renewable energy sources. Material and methods. The research was carried out using the street survey method throughout the whole of Poland It involved 1,169 respondents, including 680 (58.2% from urban and 489 (41.8% from rural areas; 354 (17.2% respondents lived at a distance of more than 3 km from wind farms. Results. The majority of those he surveyed support the development of the renewable energy source and wind industry, and can see the sense of investments in this sector. Every fifth respondent is prepared to pay more for renewable energy, bearing in mind that it reduces the emission of CO2 into the atmosphere. The use of wind power contributes to: the protection of human health, the purity of the natural environment, the creation of new jobs, technological progress of Poland, the reduction of the air pollution, the improvement of energy security of the country, the prosperity of the region and its dwellers. Conclusions. Poles who do not live near renewable energy investments support the development of this sector. Nevertheless, the NIMBY syndrome cannot be excluded. Therefore, it is necessary to conduct research on two groups – a group of people living near renewable energy investments and residents of places where such investments are not planned. Polish people also support for pro-ecological actions and demonstrate positive attitudes toward wind power and other renewable energy sources. They can see benefits for humans and the environment resulting from

  20. Renewable Energies, Present & Future

    X. S. Cai

    2005-01-01

    Fossil fuels are major cause of environmental destruction in pollutions. It has created much needed momentum for renewable energies, which are environmentally benign, generated locally, and can play a significant role in developing economy. As a sustainable energy sources, it can grow at a rapid pace to meet increasing demands for electricity in a cost-effective way.

  1. Renewable energy sources for the world's poor: a review of current international development assistance programs

    Ashworth, J. H.

    1979-10-01

    Foreign assistance funding of the creation, testing, and use of renewable energy sources concerning worldwide efforts to provide energy for Third World development is examined. Donor agencies and developing nations give serious attention to technologies that have been considered exotic and marginal: small-scale hydroelectric generation, solar water heating and distillation, biomass conversion to methane gas and alcohol, wind power, photovoltaic-powered small-scale irrigation, and village-level solar-powered absorption refrigeration. An initial effort to assist in the international coordination of donor activity and in the sharing of information generated by foreign-assistance projects that use renewable energy sources is reported. The report mainly provides information about specific development projects. It contains only a few of the projects that have been approved and funded by 1 June 1979. (MCW)

  2. Renewable energy sources in the French national plan for improved energy efficiency

    NONE

    2002-07-01

    The French National Plan for Improved Energy Efficiency (PNAEE, Programme National d'Amelioration de l'Efficacite Energetique) whose aim is to ensure the conformity of national energy policy with the climate change mitigation policy was designed to be in line with France's national plan to combat climatic change and with the French national targets in the European directive for electricity from renewable energy sources (RES). According to this directive, by 2010, RES electricity should account for 21% percent of electricity consumed in France as opposed 15% today. To pave the way for this increase, the mains tools that have been set up by the French authorities in the framework of the PNAEE are as follows: ADEME's programmes; the RES electricity purchase obligation with feed-in tariffs; the pluri-annual investment programme in the electricity sector. The Law no. 2000-108, dated 10 February 2000, on the modernization and development of the public service in the electricity field, includes two articles, which directly relate to RESs. Two years after the PNAEE's implementation, the first achievements are the followings: more than 63.000 square meters of solar thermal panels installed due to a rapidly increasing demand; a new contribution of 47.000 toe to the national energy production coming from wood energy and geothermal; a new contribution of 208 GWh/year to the national electricity production coming from RES electricity, mainly from wind energy. These first results are not yet in line with the final objectives but the budgetary, regulatory and fiscal framework is in place and the market is in a quickly growing phase. (author)

  3. Analysis of renewable energy sources and electric vehicle penetration into energy systems predominantly based on lignite

    Dedinec, A.; Jovanovski, B.; Gajduk, A.; Markovska, N.; Kocarev, L.

    2016-05-01

    We consider an integration of renewable energy into transport and electricity sectors through vehicle to grid (V2G) technologies for an energy system that is predominantly based on lignite. The national energy system of Macedonia is modeled using EnergyPLAN which integrates energy for electricity, transport and heat, and includes hourly fluctuations in human needs and the environment. We show that electric-vehicles can provide the necessary storage enabling a fully renewable energy profile for Macedonia that can match the country's growing demand for energy. Furthermore, a large penetration of electric vehicles leads to a dramatic reduction of 47% of small particles and other air pollutants generated by car traffic in 2050.

  4. Analysis of renewable energy sources and electric vehicle penetration into energy systems predominantly based on lignite

    Dedinec, Aleksandar; Gajduk, Andrej; Markovska, Natasa; Kocarev, Ljupco

    2016-01-01

    We consider an integration of renewable energy into transport and electricity sectors through vehicle to grid (V2G) technologies for an energy system that is predominantly based on lignite. The national energy system of Macedonia is modeled using EnergyPLAN which integrates energy for electricity, transport and heat, and includes hourly fluctuations in human needs and the environment. We show that electric-vehicles can provide the necessary storage enabling a fully renewable energy profile for Macedonia that can match the country's growing demand for energy. Furthermore, a large penetration of electric vehicles leads to a dramatic reduction of 47% of small particles and other air pollutants generated by car traffic in 2050.

  5. THE USE OF THE RENEWABLE ENERGY SOURCES – AS THE WAY TO GET OVER MACRO-ECONOMIC IMBALANCES

    Khmelnitsky L.Y.

    2010-12-01

    Full Text Available The article describes major groups of current macroeconomic risks. Major challenges of modern world energy development are described and the spotlight on renewable energy sources as one of mechanisms of the described problems solution. Major requirements applied to government support schemes for renewable energy development are stated as well.

  6. Selecting sustainable renewable energy source for energy assistance to North Korea

    Yi, Sul-Ki [Korea Electrical Engineering and Science Research Institute, Bldg 130, Seoul National University, 599 Gwanangno, Gwanak-gu, Seoul 151-742 (Korea, Republic of); Sin, Hwa-Young; Heo, Eunnyeong [Department of Energy Systems Engineering, Seoul National University, 599, Gwanang-no, Gwanak-Gu, Seoul 157-742 (Korea, Republic of)

    2011-01-15

    Renewable energy (RE) is the best sustainable energy solution South Korea can provide to assist North Korea in overcoming its chronic energy shortage. Designed as a follow-on research to Sin et al., a survey was conducted with a panel of experts consisting of various disciplines and affiliations using the analytic hierarchy process (AHP) with benefit, opportunity, cost, and risk (BOCR). The results showed the panel viewed security as the most important factor among the strategic criteria. For the level 1 attributes, the panel showed no significant differences of opinion among the different alternatives; however, cost showed to be the most important factor for the panel. The panel chose wind power as the best alternative source of energy for North Korea; however, there were some differences in opinion among the sub-groups of the panel depending on the composition and the expertise of the sub-group. Compared to other studies on the similar topic, this research stands out in that the research results were derived using AHP and BOCR and that the panel was composed of both Korean and foreign experts on North Korea affiliated with state-run research organizations, armed forces, non-governmental organizations, academic research organizations, private consulting firms, and journalism. The research arrived at the conclusion that the following factors must be considered as South Korea designs its future North Korean energy assistance policy: (1) RE assistance for North Korea can take on various forms; hence, experts consulted during the design, writing, and implementation phases of the policy in question must possess knowledge and expertise in the appropriate technology and methodology being considered; (2) possibility of a sudden destabilization of the Northeast Asian security paradigm due to the collapse of North Korea; and (3) continued nuclearization of North Korea. (author)

  7. Renewable energy sources and nuclear installations; Erneuerbare Energien und neue Nuklearanlagen

    Hirschberg, S.; Bauer, Ch.; Burgherr, P.; Stucki, S.; Vogel, F.; Biollaz, S.; Schulz, T.; Durisch, W.; Hardegger, P.; Foskolos, K.; Meier, A.; Schenler, W.

    2005-02-15

    This comprehensive work report for the Swiss Federal Office of Energy (SFOE) made by the Paul Scherrer Institute PSI takes a look at work done in connection with the updating of the office's Energy Perspectives. In particular, the topic of electricity is reviewed in the light of pending important decisions in the area of nuclear energy and the newer renewable sources of energy. The report makes an attempt to estimate the effect on Swiss power production that the new renewables and new nuclear installations could have in the next 30-40 years and to what costs this could be done and which obstacles would have to overcome. The renewable energy sources include small hydro, wind, photovoltaics, solar thermal power plants, biogas, geothermal energy, wave-power and solar chemistry. The methods used include literature study and contacts with internal PSI experts on the various areas involved. The most important system characteristics were noted and learning curves for the various technologies were taken into account. Ecological and social factors were also considered

  8. Issues, Challenges, Causes, Impacts and Utilization of Renewable Energy Sources - Grid Integration

    Er. Mamatha Sandhu

    2014-03-01

    Full Text Available The renewable energy sources have increased significantly due to environmental issues and fossil fuels elevated cost. Integration of renewable energy sources to utility grid depends on the scale of power generation. Large scale power generations are connected to transmission systems where as small scale distributed power generation is connected to distribution systems. There are certain challenges in the integration of both types of systems directly. Due to this, wind energy has gained a lot of investments from all over the world. However, due to the wind speed‘s uncertain behavior it is difficult to obtain good quality power, since wind speed fluctuations reflect on the voltage and active power output of the electric machine connected to the wind turbine. Solar penetration also changes the voltage profile and frequency response of the system and affects the transmission and distribution systems of utility grid. This paper presents a review in the issues, challenges, causes, impacts and utilization of renewable energy sources (RES - Grid Integration.

  9. An Approach to Develop Embedded System For Web Based Monitoring & Controlling of Renewable Energy Sources

    Akansha S. Fating

    2013-06-01

    Full Text Available The widespread application of Renewable Energy Sources (RESrequires centralized monitoring and controlling System. To makethese operations control room independent, there is need todevelop smart servers and web based applications. Cost is anessential factor of any embedded system design. This paperdiscusses a novel concept of designing of cost effective server/client embedded system Renewable Energy sources. Hereembedded server is developed with ARM9 controller loaded withwindows CE operating system. Low cost client are designedusing Atmega32 microcontroller with LAN connection. Server/client are connected in LAN system and server basedapplications has been developed to monitor/ controlling the clientoperation. The server has web based applications that can beaccessed via internet. Author has presented developed systemand results.

  10. Multifunctional Voltage Source Inverter for Renewable Energy Integration and Power Quality Conditioning

    2014-01-01

    In order to utilize the energy from the renewable energy sources, power conversion system is necessary, in which the voltage source inverter (VSI) is usually the last stage for injecting power to the grid. It is an economical solution to add the function of power quality conditioning to the grid-connected VSI in the low-voltage distribution system. Two multifunctional VSIs are studied in this paper, that is, inductive-coupling VSI and capacitive-coupling VSI, which are named after the fundame...

  11. Multicriteria analysis for sources of renewable energy using data from remote sensing

    Matejicek, L.

    2015-04-01

    Renewable energy sources are major components of the strategy to reduce harmful emissions and to replace depleting fossil energy resources. Data from remote sensing can provide information for multicriteria analysis for sources of renewable energy. Advanced land cover quantification makes it possible to search for suitable sites. Multicriteria analysis, together with other data, is used to determine the energy potential and socially acceptability of suggested locations. The described case study is focused on an area of surface coal mines in the northwestern region of the Czech Republic, where the impacts of surface mining and reclamation constitute a dominant force in land cover changes. High resolution satellite images represent the main input datasets for identification of suitable sites. Solar mapping, wind predictions, the location of weirs in watersheds, road maps and demographic information complement the data from remote sensing for multicriteria analysis, which is implemented in a geographic information system (GIS). The input spatial datasets for multicriteria analysis in GIS are reclassified to a common scale and processed with raster algebra tools to identify suitable sites for sources of renewable energy. The selection of suitable sites is limited by the CORINE land cover database to mining and agricultural areas. The case study is focused on long term land cover changes in the 1985-2015 period. Multicriteria analysis based on CORINE data shows moderate changes in mapping of suitable sites for utilization of selected sources of renewable energy in 1990, 2000, 2006 and 2012. The results represent map layers showing the energy potential on a scale of a few preference classes (1-7), where the first class is linked to minimum preference and the last class to maximum preference. The attached histograms show the moderate variability of preference classes due to land cover changes caused by mining activities. The results also show a slight increase in the more

  12. Integrated renewable energy networks

    Mansouri Kouhestani, F.; Byrne, J. M.; Hazendonk, P.; Brown, M. B.; Spencer, L.

    2015-12-01

    This multidisciplinary research is focused on studying implementation of diverse renewable energy networks. Our modern economy now depends heavily on large-scale, energy-intensive technologies. A transition to low carbon, renewable sources of energy is needed. We will develop a procedure for designing and analyzing renewable energy systems based on the magnitude, distribution, temporal characteristics, reliability and costs of the various renewable resources (including biomass waste streams) in combination with various measures to control the magnitude and timing of energy demand. The southern Canadian prairies are an ideal location for developing renewable energy networks. The region is blessed with steady, westerly winds and bright sunshine for more hours annually than Houston Texas. Extensive irrigation agriculture provides huge waste streams that can be processed biologically and chemically to create a range of biofuels. The first stage involves mapping existing energy and waste flows on a neighbourhood, municipal, and regional level. Optimal sites and combinations of sites for solar and wind electrical generation, such as ridges, rooftops and valley walls, will be identified. Geomatics based site and grid analyses will identify best locations for energy production based on efficient production and connectivity to regional grids.

  13. Forecast of power generation and heat production from renewable energy sources

    Pydych Tadeusz

    2017-01-01

    Full Text Available The share of renewable energy sources (RES in the end use of energy in the UE will increase from the present level of about 25% to 50 % in 2030 according to the assumptions of the European Commission. In Poland the RES Act was passed in 2015. The act defines mechanisms and instruments for supporting the production of electricity and heat from renewable energy sources. Statistics (2003–2014 of electricity generation and heat production from RES in Poland were used in the research. Because of amendments to regulations connected with promoting RES and the emissions trading system (ETS as well as the uncertainty associated with further directions of the energy and environmental policy, generation of electricity and heat based on the use of RES must be modelled while taking risk into account. A number of dynamic processes incorporating random events may be modelled by stochastic equations using Ito calculus. By applying Euler’s method to solve stochastic differential equations (SDE, it is possible to simulate the development of the use of renewable energy carriers in electricity generation and heat production in the future.

  14. “Team Play” between Renewable Energy Sources and Vehicle Fleet to Decrease Air Pollution

    Michela Longo

    2015-12-01

    Full Text Available The reduction of air pollutants for the purpose of maintaining or improving air quality across the globe is a fundamental concern to which all modern governments are allocating varying amounts of attention and resources. The successful amelioration of air pollution requires strategic investments in the commercialization and adoption of “clean energy technologies” by both private and public entities, the conversion of contemporary houses to “smart houses”, the diffusion of Renewable Energy Sources (RES including photovoltaic systems (PV, wind farms, and different forms of bioenergy, and the integration of electric-powered vehicles. In concert with these ideas, this paper aims to discuss the possibility of undertaking a feasibility study in two countries Canada and Italy concerning the integration of electric vehicles (EVs and electric motorcycles (EMs. The proposed feasibility study would seek to assess the prospect of replacing the current vehicle fleets in these two countries with EVs in a manner that utilizes renewable energy sources and, thus, does not generate new toxic emissions. In conclusion, this study demonstrated that a pronounced introduction and distribution of RES, EVs, and EMs can operate as a great opportunity for both the environment and the capacities and needs of energy production. Today, the EV is not widespread. With this contribution, it is shown how EVs can be well integrated with renewable energy. Therefore, it is the duty of governments to implement policy strategies, in order to spread them across more territory.

  15. Using the “Footprint” Approach to Examine the Potentials and Impacts of Renewable Energy Sources in the European Alps

    Richard Hastik

    2016-05-01

    Full Text Available The expansion of renewable energies is regarded as a key way to mitigate global climate change and to ensure the provision of energy in the long term. However, conflicts between these goals and local nature conservation goals are likely to increase because of the additional space required for renewable energies. This is particularly true for mountainous areas with biodiversity-rich ecosystems. Little effort has been undertaken to systematically compare different renewable energy sources and to examine their environmental impacts using an interdisciplinary approach. This study adapted the concept of the “ecological footprint” to examine the impact on ecosystem services of land use changes involved in exploiting renewable energy sources. This innovative approach made it possible to assess and communicate the potentials of those energy sources in light of both space consumption and sustainability. The European Alps are an ideal test area because of their high energy potentials and biodiversity-rich ecosystems and the high demand for multiple ecosystem services. Our results demonstrate that energy consumption in the Alps could not be covered with the available renewable energy potentials, despite the utilization of large parts of the Alpine land area and the majority of larger rivers. Therefore, considerable effort must be invested in resolving conflicting priorities between expanding renewable energies and nature conservation, but also in realizing energy-saving measures. To this end, the approach presented here can support decision-making by revealing the energy potentials, space requirements, and environmental impacts of different renewable energy sources.

  16. Regensim – Matlab toolbox for renewable energy sources modelling and simulation

    Cristian Dragoş Dumitru

    2011-12-01

    Full Text Available This paper deals with the implementation and development of a Matlab Simulink library named RegenSim designed for modeling, simulations and analysis of real hybrid solarwind-hydro systems connected to local grids. Blocks like wind generators, hydro generators, solar photovoltaic modules and accumulators are implemented. The main objective is the study of the hybrid power system behavior, which allows employing renewable and variable in time energy sources while providing a continuous supply.

  17. Potential of renewable energy sources and its applications in Yakushima Island

    Uemura, Yoshimitsu; Kai, Takami; Natori, Rintarou; Takahashi, Takeshige; Hatate, Yasuo; Yoshida, Masahiro [Kagoshima University (Japan). Dept. of Applied Chemistry and Chemical Engineering

    2004-04-01

    A study was carried out to see if the potential of renewable energy sources other than hydroelectric power, such as wind, photovoltaic, solar thermal, biomass and waste energy sources, can meet the current energy consumption in Yakushima. The current electricity consumption can be covered by wind and photovoltaic energy sources. The total potential of wind and photovoltaic energy sources is 5.4 times as much as the current electricity consumption. LP gas and kerosene can be replaced by solar thermal and biogas energy. The potential of plant biomass and municipal waste is not sufficient (approximately one third) to cover the rest of the fossil fuels (gasoline, diesel oil and heavy oil). Also, plant biomass and municipal waste must be converted into fluid form. This shortage can be covered by the potential of wind and photovoltaic energy sources. We also investigated the possibility of tourism expansion using the potential of wind and photovoltaic energy sources. Taking into account three types of capacity (energy, accommodation and transportation), Yakushima can accept approximately four times as many tourists as the current number of tourists. (author)

  18. Comparative analyses of seven technologies to facilitate the integration of fluctuating renewable energy sources

    Mathiesen, Brian Vad; Lund, Henrik

    2009-01-01

    An analysis of seven different technologies is presented. The technologies integrate fluctuating renewable energy sources (RES) such as wind power production into the electricity supply, and the Danish energy system is used as a case. Comprehensive hour-by-hour energy system analyses are conducted...... and feasibility analyses. Large-scale heat pumps prove to be especially promising as they efficiently reduce the production of excess electricity. Flexible electricity demand and electric boilers are low-cost solutions, but their improvement of fuel efficiency is rather limited. Battery electric vehicles...

  19. Renewable hot dry rock geothermal energy source and its potential in Pakistan

    Zaigham, Nayyer Alam [Department of Geology, University of Karachi, Karachi 75270 (Pakistan); Nayyar, Zeeshan Alam [Department of Applied Physics, University of Karachi, Karachi 75270 (Pakistan)

    2010-04-15

    Geothermal energy source, one of the viable renewable energy sources, has encouraging potential to generate full base-load electricity, which has not been explored so far in Pakistan. Though the country can be benefited by harnessing the hydro-geothermal options of energy generation in areas where sources exist, but most of these sources lie in extreme remote and inaccessible rugged mountainous ranges away from the urban-industrial centers. On the other hand, the present study shows that the HDR geothermal option is one of the most viable renewable sources considering the tectonic setup of Pakistan. Results of the study highlight the HDR geothermal energy prospects at relatively deeper depths than hydro-geothermal resources in water-free condition. The basement tectonic analyses reveal that the HDR prospects could be found even just below the urban-industrial centers of Pakistan where there are no hot springs and/or geysers like southern Indus basin in Sindh province or the Kharan trough in the western Balochistan province. Presence of high earth-skin temperature gradient trends derived from satellite temperature data and the high geothermal gradient anomalous zone derived from scanty data of bottom-hole temperatures of some of the oil and gas exploratory wells, indicates encouraging prospects for HDR energy sources in southern Indus and Thar Desert regions inclusive of Karachi synclinorium area. These high geothermal gradients have been inferred to be the result of the deep-seated southern Indus and the Thar fossil-rift structures. Moreover, the prospects of the HDR geothermal energy sources have also been inferred in the Chagai Arc region and the Kharan-Panjgur tectonic depression in the western part of Pakistan based on the analysis of integrated geophysical data. If HDR prospects are developed, they can offer the sustainable, CO{sub 2}-free and independent of time, of day, of weather or season, and the base-load energy-generation resource. (author)

  20. Renewable Energy Monitoring Protocol. Update 2010. Methodology for the calculation and recording of the amounts of energy produced from renewable sources in the Netherlands

    Te Buck, S.; Van Keulen, B.; Bosselaar, L.; Gerlagh, T.; Skelton, T.

    2010-07-15

    This is the fifth, updated edition of the Dutch Renewable Energy Monitoring Protocol. The protocol, compiled on behalf of the Ministry of Economic Affairs, can be considered as a policy document that provides a uniform calculation method for determining the amount of energy produced in the Netherlands in a renewable manner. Because all governments and organisations use the calculation methods described in this protocol, this makes it possible to monitor developments in this field well and consistently. The introduction of this protocol outlines the history and describes its set-up, validity and relationship with other similar documents and agreements. The Dutch Renewable Energy Monitoring Protocol is compiled by NL Agency, and all relevant parties were given the chance to provide input. This has been incorporated as far as is possible. Statistics Netherlands (CBS) uses this protocol to calculate the amount of renewable energy produced in the Netherlands. These data are then used by the Ministry of Economic Affairs to gauge the realisation of policy objectives. In June 2009 the European Directive for energy from renewable sources was published with renewable energy targets for the Netherlands. This directive used a different calculation method - the gross energy end-use method - whilst the Dutch definition is based on the so-called substitution method. NL Agency was asked to add the calculation according to the gross end use method, although this is not clearly defined on a number of points. In describing the method, the unanswered questions become clear, as do, for example, the points the Netherlands should bring up in international discussions.

  1. Emissions balancing of renewable energy sources. Avoided emissions due to the use of renewable energies in 2007; Emissionsbilanz erneuerbarer Energietraeger. Durch Einsatz erneuerbarer Energien vermiedene Emissionen im Jahr 2007

    Memmler, Michael; Mohrbach, Elke; Schneider, Sven; Dreher, Marion; Herbener, Reinhard

    2009-10-15

    The report on the emissions accounting with respect to renewable energy covers the following issues: 1. Introduction and purpose. 2. Methodology concerning the balancing for electricity, heat and traffic, uncertainties due to lack of data. 3. Energy supply from renewable energy sources in 2007. 4. Fossil energy substitution by renewable energy sources: electricity, heat and traffic. 5. Emissions from different energy supply lines: electricity, heat, traffic. 6. Results of the emissions accounting for renewable energy sources: electricity, heat, traffic and comprehensive review. 7. Retroacting accounting and forward projection.

  2. VT Renewable Energy Sites - Renewable Energy Professionals

    Vermont Center for Geographic Information — (Link to Metadata) The Renewable Energy Atlas of Vermont and this dataset were created to assist town energy committees, the Clean Energy Development Fund and other...

  3. Renewable energy sources, the internet of things and the third industrial revolution: Smart grid and contemporary information and communication technologies

    Kitsios, Aristidis; Bousakas, Konstantinos; Salame, Takla; Bogno, Bachirou; Papageorgas, Panagiotis; Vokas, Georgios A.; Mauffay, Fabrice; Petit, Pierre; Aillerie, Michel; Charles, Jean-Pierre

    2017-02-01

    In this paper, the energy efficiency of a contemporary Smart Grid that is based on Distributed Renewable Energy Sources (DRES) is examined under the scope of the communication systems utilized between the energy loads and the energy sources. What is evident is that the Internet of Things (IoT) technologies that are based on the existing Web infrastructure can be heavily introduced in this direction especially when combined with long range low bandwidth networking technologies, power line communication technologies and optimization methodologies for renewable energy generation. The renewable energy generation optimization will be based on devices embedded in the PV panels and the wind power generators, which will rely on bidirectional communications with local gateways and remote control stations for achieving energy efficiency. Smart meters and DRES combined with IoT communications will be the enabling technologies for the ultimate fusion of Internet technology and renewable energy generation realizing the Energy Internet.

  4. TOWARDS A RESILIENT ENERGY SYSTEM IN EASTERN ROMANIA – FROM FOSSIL FUELS TO RENEWABLE SOURCES

    BĂNICĂ Alexandru

    2015-12-01

    Full Text Available The study takes into account the two Romanian Eastern regions (North East and South East trying to emphasize the post-communist dynamics of the energy sector in order to draw a general perspective for the future evolution towards both energy security and a clean environment. Before 1989, the energy sector, that had to sustain not only the population needs, but also an oversized manufacturing industry, was based on big power plants usually using coal and oil and highly polluting the environment. The hydropower had a rather small share in the total energy production. This inherited system was very much resistant after the end of the centralized political system, therefore after the general industrial decline the energy sector remained the main source of air pollution in many towns and cities from Romania. Meanwhile, in the last 6-7 years, due to a favourable national political context, we assisted, especially in the analysed area, to an important emergence of renewable energy investments (mainly wind and solar energy, but also biomass or hydro-energy. Our purpose is to evaluate, from a geographical point of view, the extent and the implications of a desirable progressive shift from fossil fuels to renewable energy that could radically change the territorial relations and sustain development on the long term.

  5. Sustainable renewable energy seawater desalination using combined-cycle solar and geothermal heat sources

    Missimer, Thomas M.

    2013-01-01

    Key goals in the improvement of desalination technology are to reduce overall energy consumption, make the process "greener," and reduce the cost of the delivered water. Adsorption desalination (AD) is a promising new technology that has great potential to reduce the need for conventional power, to use solely renewable energy sources, and to reduce the overall cost of water treatment. This technology can desalt seawater or water of even higher salinity using waste heat, solar heat, or geothermal heat. An AD system can operate effectively at temperatures ranging from 55 to 80 °C with perhaps an optimal temperature of 80 °C. The generally low temperature requirement for the feedwater allows the system to operate quite efficiently using an alternative energy source, such as solar power. Solar power, particularly in warm dry regions, can generate a consistent water temperature of about 90 °C. Although this temperature is more than adequate to run the system, solar energy collection only can occur during daylight hours, thereby necessitating the use of heat storage during nighttime or very cloudy days. With increasing capacity, the need for extensive thermal storage may be problematic and could add substantial cost to the development of an AD system. However, in many parts of the world, there are subsurface geothermal energy sources that have not been extensively used. Combining a low to moderate geothermal energy recovery system to an AD system would provide a solution to the thermal storage issue. However, geothermal energy development from particularly Hot Dry Rock is limited by the magnitude of the heat flow required for the process and the thermal conductivity of the rock material forming the heat reservoir. Combining solar and geothermal energy using an alternating 12-h cycle would reduce the probability of depleting the heat source within the geothermal reservoir and provide the most effective use of renewable energy. © 2013 Desalination Publications.

  6. Renewable energy annual 1996

    NONE

    1997-03-01

    This report presents summary data on renewable energy consumption, the status of each of the primary renewable technologies, a profile of each of the associated industries, an analysis of topical issues related to renewable energy, and information on renewable energy projects worldwide. It is the second in a series of annual reports on renewable energy. The renewable energy resources included in the report are biomass (wood and ethanol); municipal solid waste, including waste-to-energy and landfill gas; geothermal; wind; and solar energy, including solar thermal and photovoltaic. The report also includes various appendices and a glossary.

  7. Utilizing hydropower for load balancing non-storable renewable energy sources - technical and environmental challenges

    Alfredsen, K. T.; Killingtveit, A.

    2011-12-01

    About 99% of the total energy production in Norway comes from hydropower, and the total production of about 120 TWh makes Norway Europe's largest hydropower producer. Most hydropower systems in Norway are based on high-head plants with mountain storage reservoirs and tunnels transporting water from the reservoirs to the power plants. In total, Norwegian reservoirs contributes around 50% of the total energy storage capacity in Europe. Current strategies to reduce emission of greenhouse gases from energy production involve increased focus on renewable energy sources, e.g. the European Union's 202020 goal in which renewable energy sources should be 20% of the total energy production by 2020. To meet this goal new renewable energy installations must be developed on a large scale in the coming years, and wind power is the main focus for new developments. Hydropower can contribute directly to increase renewable energy through new development or extensions to existing systems, but maybe even more important is the potential to use hydropower systems with storage for load balancing in a system with increased amount of non-storable renewable energies. Even if new storage technologies are under development, hydro storage is the only technology available on a large scale and the most economical feasible alternative. In this respect the Norwegian system has a high potential both through direct use of existing reservoirs and through an increased development of pump storage plants utilizing surplus wind energy to pump water and then producing during periods with low wind input. Through cables to Europe, Norwegian hydropower could also provide balance power for the North European market. Increased peaking and more variable operation of the current hydropower system will present a number of technical and environmental challenges that needs to be identified and mitigated. A more variable production will lead to fluctuating flow in receiving rivers and reservoirs, and it will also

  8. Energy Management in Smart Home with Integration of Renewable Energy Sources

    Hakimi, Mehdi; Hajizadeh, Amin; Sanjeevikumar, Padmanaban

    2017-01-01

    Heating systems play an indispensable part in building energy usage while maintaining thermal comfort of the occupants. This paper introduces an ingenious residential heating system controller which has a smart grid utility. Due to smart grid, demand response systems can now engage not only...... with the commercial clients but with the individual residential customers as well. In addition to this, the capability exists to have automated control systems which function on the availability of renewable energy and the well-being of the clients. In this paper, one feasible execution of an active controller...

  9. Funding of renewable energy sources in the deregulated German electricity market; Foerderung erneuerbarer Energien im liberalisierten deutschen Strommarkt

    Wawer, T.

    2007-12-14

    This study intends to develop an efficient market design for the German electricity market, with particular regard to renewable energy sources. The German electricity market is disintegrated, i.e. market sectors are not coordinated by a central agency but by their own interactions. The first part of the investigation analyzes the interdependences of market sectors, while the second part will analyze funding instruments for renewable energy sources on this basis. (orig.)

  10. A Review of Nipa Palm as a Renewable Energy Source in Nigeria

    O.T. Okugbo

    2012-08-01

    Full Text Available The aim of this study is to evaluate the renewable energy potential of Nipa Palm, a bio-energy crop widely available yet underutilized in Nigeria. The combustion of fossil fuels such as coal, oil, and natural gas has increased the concentration of carbon dioxide in the earth's atmosphere. The carbon dioxide and other socalled greenhouse gases allow solar energy to enter the Earth's atmosphere, but reduce the amount of energy that can re-radiate back into space, trapping energy and causing global warming. Nipa Palm which has been regarded as an environmental menace is now regarded as one of the candidates for renewable energy to fulfill the requirement of clean carbon emission. Abundant quantity of Nipa Palm provides an impetus for the sustainable generation of bio-ethanol. This sugar based bio-ethanol source development in Nigeria provides not only profitable use to a problem plant but also provides an opportunity and incentive to generate some Carbon Emission Reduction (CERs credits.

  11. An Indian scenario on renewable and sustainable energy sources with emphasis on algae.

    Hemaiswarya, S; Raja, Rathinam; Carvalho, Isabel S; Ravikumar, R; Zambare, Vasudeo; Barh, Debmalya

    2012-12-01

    India is the fifth largest primary energy consumer and fourth largest petroleum consumer after USA, China, and Japan. Despite the global economic crisis, India's economy is expected to grow at 6 to 8 %/year. There is an extreme dependence on petroleum products with considerable risks and environmental issues. Petroleum-derived transport fuels are of limited availability and contribute to global warming, making renewable biofuel as the best alternative. The focus on biogas and biomass-based energy, such as bioethanol and biohydrogen, will enhance cost-effectiveness and provide an opportunity for the rural community. Among all energy sources, microalgae have received, so far, more attention due to their facile adaptability to grow in the photobioreactors or open ponds, high yields, and multiple applications. Microalgae can produce a substantial amount of triacylglycerols as a storage lipid under photooxidative stress or other adverse environmental conditions. In addition to renewable biofuels, they can provide different types of high-value bioproducts added to their advantages, such as higher photosynthetic efficiency, higher biomass production, and faster growth compared to any other energy crops. The viability of first-generation biofuels production is, however, questionable because of the conflict with food supply. In the future, biofuels should ideally create the environmental, economic, and social benefits to the communities and reflect energy efficiency so as to plan a road map for the industry to produce third-generation biofuels.

  12. An Indian scenario on renewable and sustainable energy sources with emphasis on algae

    Hemaiswarya, S.; Carvalho, Isabel S. [Algarve Univ., Faro (Portugal). Food Science Lab.; Raja, Rathinam [Algarve Univ., Faro (Portugal). Food Science Lab.; Institute of Integrative Omics and Applied Biotechnology (IIOAB), Purba Medinipur (India). Centre for Bioprocess, Biotechnology and Renewable Energy; Ravikumar, R. [Aquatic Energy LLC, Lake Charles, LA (United States); Zambare, Vasudeo [Institute of Integrative Omics and Applied Biotechnology (IIOAB), Purba Medinipur (India). Centre for Bioprocess, Biotechnology and Renewable Energy; Barh, Debmalya [Institute of Integrative Omics and Applied Biotechnology (IIOAB), Purba Medinipur (India). Centre for Genomics and Applied Gene Technology

    2012-12-15

    India is the fifth largest primary energy consumer and fourth largest petroleum consumer after USA, China, and Japan. Despite the global economic crisis, India's economy is expected to grow at 6 to 8 %/year. There is an extreme dependence on petroleum products with considerable risks and environmental issues. Petroleum-derived transport fuels are of limited availability and contribute to global warming, making renewable biofuel as the best alternative. The focus on biogas and biomass-based energy, such as bioethanol and biohydrogen, will enhance cost-effectiveness and provide an opportunity for the rural community. Among all energy sources, microalgae have received, so far, more attention due to their facile adaptability to grow in the photobioreactors or open ponds, high yields, and multiple applications. Microalgae can produce a substantial amount of triacylglycerols as a storage lipid under photooxidative stress or other adverse environmental conditions. In addition to renewable biofuels, they can provide different types of high-value bioproducts added to their advantages, such as higher photosynthetic efficiency, higher biomass production, and faster growth compared to any other energy crops. The viability of first-generation biofuels production is, however, questionable because of the conflict with food supply. In the future, biofuels should ideally create the environmental, economic, and social benefits to the communities and reflect energy efficiency so as to plan a road map for the industry to produce third-generation biofuels. (orig.)

  13. Multifunctional Voltage Source Inverter for Renewable Energy Integration and Power Quality Conditioning

    NingYi Dai

    2014-01-01

    Full Text Available In order to utilize the energy from the renewable energy sources, power conversion system is necessary, in which the voltage source inverter (VSI is usually the last stage for injecting power to the grid. It is an economical solution to add the function of power quality conditioning to the grid-connected VSI in the low-voltage distribution system. Two multifunctional VSIs are studied in this paper, that is, inductive-coupling VSI and capacitive-coupling VSI, which are named after the fundamental frequency impedance of their coupling branch. The operation voltages of the two VSIs are compared when they are used for renewable energy integration and power quality conditioning simultaneously. The operation voltage of the capacitive-coupling VSI can be set much lower than that of the inductive-coupling VSI when reactive power is for compensating inductive loads. Since a large portion of the loads in the distribution system are inductive, the capacitive-coupling VSI is further studied. The design and control method of the multifunctional capacitive-coupling VSI are proposed in this paper. Simulation and experimental results are provided to show its validity.

  14. Multifunctional voltage source inverter for renewable energy integration and power quality conditioning.

    Dai, NingYi; Lam, Chi-Seng; Zhang, WenChen

    2014-01-01

    In order to utilize the energy from the renewable energy sources, power conversion system is necessary, in which the voltage source inverter (VSI) is usually the last stage for injecting power to the grid. It is an economical solution to add the function of power quality conditioning to the grid-connected VSI in the low-voltage distribution system. Two multifunctional VSIs are studied in this paper, that is, inductive-coupling VSI and capacitive-coupling VSI, which are named after the fundamental frequency impedance of their coupling branch. The operation voltages of the two VSIs are compared when they are used for renewable energy integration and power quality conditioning simultaneously. The operation voltage of the capacitive-coupling VSI can be set much lower than that of the inductive-coupling VSI when reactive power is for compensating inductive loads. Since a large portion of the loads in the distribution system are inductive, the capacitive-coupling VSI is further studied. The design and control method of the multifunctional capacitive-coupling VSI are proposed in this paper. Simulation and experimental results are provided to show its validity.

  15. Equilibrium Transitions from Non Renewable Energy to Renewable Energy under Capacity Constraints

    Amigues, Jean-Pierre; Ayong Le Kama, Alain; Moreaux, Michel

    2013-01-01

    We study the transition between non renewable and renewable energy sources with adjustment costs over the production capacity of renewable energy. Assuming constant variable marginal costs for both energy sources, convex adjustment costs and a more expensive renewable energy, we show the following. With sufficiently abundant non renewable energy endowments, the dynamic equilibrium path is composed of a first time phase of only non renewable energy use followed by a transition phase substituti...

  16. Equilibrium transitions from non-renewable energy to renewable energy under capacity constraints

    Amigues, Jean-Pierre; Ayong Le Kama, Alain; Moreaux, Michel

    2015-01-01

    We study the transition between non-renewable and renewable energy sources with adjustment costs over the production capacity of renewable energy. Assuming constant variable marginal costs for both energy sources, convex adjustment costs and a more expensive renewable energy, we show the following. With sufficiently abundant non-renewable energy endowments, the dynamic equilibrium path is composed of a first time phase of only non-renewable energy use followed by a transition phase substituti...

  17. Diversification of the energy mix and renewable energy sources in Slovenia for ensuring sustainable, competitive and secure energy in the future

    Podlogar, Sasa; Raner, Damjana; Zebeljan, Djordje

    2007-07-01

    The European Union is facing major challenges in the energy field - growing import dependency, the need for substantial investment and lack of competitive energy market. It has adopted binding legislation and non-binding recommendations, but they do not suffice. The latest Green paper identifies diversification of energy mix as one of the key areas, where further action is needed, if Europe is to overcome this crisis. Renewable energy is recognised as a relevant factor in improving security of energy supply, since it increases the share of indigenous energy and thus provides a more balanced and diversified energy mix. Slovenia's energy mix includes 11 % of renewables. In our electricity mix the share of renewables is higher, 27,6 %.The estimations show that by 2015 13,3 % of primary energy use will come from renewable sources. Our current strategy in the field of renewable energy sources is to increase their share in overall energy balance sheet to 12 % in 2010 and to increase their share in electricity production to 33,6 % in 2010. But Slovenia will have to take into account new ambitious targets the European Commission recommended recently, while trying to determine the optimally balanced diversification of energy sources in the future. (auth)

  18. Promoting renewable energy sources for heating and cooling in EU-27 countries

    Cansino, Jose M., E-mail: jmcansino@us.es [Department of Economic Analysis and Political Economy, Seville University, Avda. Ramon y Cajal, no. 1, 41018 Seville (Spain); Pablo-Romero, Maria del P. [Department of Economic Analysis and Political Economy, Seville University, Avda. Ramon y Cajal, no. 1, 41018 Seville (Spain); Roman, Rocio, E-mail: rroman@us.es [Department of Economic Analysis and Political Economy, Seville University, Avda. Ramon y Cajal, no. 1, 41018 Seville (Spain); Yniguez, Rocio [Department of Economic Analysis and Political Economy, Seville University, Avda. Ramon y Cajal, no. 1, 41018 Seville (Spain)

    2011-06-15

    In addition to public policies aimed at improving the energy efficiency of buildings, EU authorities have also promoted the use of Renewable Energy Sources for heating and cooling uses (RES H and C). This paper analyses the main policy measures implemented in EU-27 countries up to 2009: i.e. subsidies, tax incentives, financial support and feed-in tariffs. Twenty-three Member States (MSs) have developed some of these policy measures. The most widespread measure is the subsidy (22 MSs have implemented these) because from a political point of view, subsidies provide a straightforward approach to promote the use of RES H and C. Secondly, tax incentives have been used for reducing investment costs and making renewable energy profitable. Thirdly, financial incentives and feed-in tariffs have been used sparingly. While financial incentives might be used more extensively for promoting RES H and C if they are accompanied by other policy measures, feed-in tariffs are not likely to be implemented significantly in the future because this measure is not designed for household heat producers. - Highlights: > Main EU policies to reduce energy consumption are focused on buildings' efficiency. > Alternative incentives to promote the use of RES H and C in EU-27 are now studied. > Subsidies are the most widespread measure. > Tax incentives are used for reducing investment costs and making RES profitable. > Financial incentives and feed-in tariffs have been used sparingly.

  19. The current status of the development of renewable energy sources worldwide and in Russia

    Fortov, V. E.; Popel', O. S.

    2014-06-01

    Resorting to renewable energy sources (RESs) as one of the bases of the promising world energy industry has become a logical result of the historical development and the recognition that is necessary to diversify primary energy sources being used, with the aim of enhancing both energy and ecological security of countries, regions, and concrete energy consumers. The review of the development of new technologies used for conversion of RESs, the progress of which can be characterized by the fact that by the year 2013 the total generating capacity of RES-based power plants now in operation has amounted to 500 GW—by a factor of 1.5 more than the total generating capacity of all nuclear power stations in the world. The paper presents an analysis of the current status of RESs and problems that restrain their development in Russia. It is noted that the peculiarities of the energy situation in Russia impose the specific requirements upon drawing up the programs of the development of RESs. Along with the use of RESs as part of systems of centralized energy supply, which is a priority for most industrially developed countries and promises the most large-scale introduction of RESs in Russia, it is necessary, first of all, to give attention to the development and creation of systems for independent supply of consumers with power and heat and the development of distributed powergenerating systems using RESs.

  20. Solid waste as renewable source of energy. Current and future possibility in Algeria

    Taqiy Eddine, Boukelia; Salah, Mecibah Med [Mentouri Univ., Constantine (Algeria). Mechanical Dept.

    2012-11-01

    Algeria has created a green momentum by launching an ambitious program to develop renewable energies and promote energy efficiency. Solid waste is one of most important sources of biomass potential in Algeria, which can be used as renewable energy sources. With economic development and the evolution of population, the quantity of solid waste is increasing rapidly in Algeria; according to the National Cadastre for Solid Waste Generation, the overall generation of municipal solid waste was more than 10.3 million tons per year, and the amount of industrial solid waste, including non-hazardous and inert industrial waste was 2,547,000 tons per year, with a stock quantity of 4,483,500 tons. The hazardous waste generated amounts to 325,100 tons per year; the quantities of waste in stock and awaiting a disposal solution amount to 2,008,500 tons. Healthcare waste reaches to 125,000 tons per year. The management of solid waste and its valorization is based on the understanding of solid waste composition by its categories and physicochemical characteristics. Elimination is the solution applied to 97% of waste produced in Algeria. Wastes are disposed in the following ways: open dumps (57%), burned in the open air in public dumps or municipal uncontrolled ones (30%), and controlled dumps and landfill (10%). On the other side, the quantities destined for recovery are too low: only 2% for recycling and 1% for composting. Waste to energy is very attractive option for elimination solid waste with energy recovery. In this paper, we give an overview for this technology, including its conversion options and its useful products (such as electricity, heat and transportation fuel), and waste to energy-related environmental issues and its challenges. (orig.)

  1. Evaluation of the use of renewable energy sources and peat in rural municipal economy

    Medvedeva, E. A.; Ryapin, I. Yu.; Urvatsev, I. V.; Tsyba, V. Ye.

    2016-09-01

    This paper analyzes the cost-effectiveness of the use of renewable energy sources (RES) and peat in production of electric and heat energy in rural places of the country by comparing tariffs (prices) of energy versus total expenditures on generation of electric and heat energy when using RES and peat. The appraisal of a cost-effective scale in application of energy plants working on RES and peat in the rural side in Russia is made by using a model-information set developed at the Energy Institute of the National Research University (Higher School of Economics). It is shown that with the current tariffs, the production by use of RES and peat may become economically effective, which means to achieve 1.8 billion kW/h of electric and 250 million GJ of heat energy per year, and, in the long run, 30 billion kW of electric and up to 400 million GJ per year. In comparison of total expenditures on production of electric and heat energy in rural areas (which are considerably above the established tariffs), it becomes cost effective to produce the electric energy of up to 12 billion kW in the nearest years and up to 80 billion kW in the long run. The need for the governmental policy motivating the projects based on use of RES and peat and the lines of this policy for the rural areas of the country are outlined.

  2. Economic costs and benefits of the renewable energy sources; Costi e benefici economici delle fonti rinnovabili

    De Leo, G. A. [Parma Univ., Parma (Italy). Dipt. di Scienze Ambientali; Rizzi, L. [Milan Politecnico, Milan (Italy). Dipt. di Elettronica; Caizzi, A. [Cesi Spa, Business Unit Ambiente, Milan (Italy)

    2001-08-01

    In this work it has been analysed the potential diffusion of renewable energy sources and co-generation in the Italian market on the basis of the level of maturation of the different technologies, predicted market growth and environmental impacts associated to them. A sensitivity analysis on external costs generated by global climate changes has allowed everybody to assess how possible errors in estimating the potential impact of greenhouse gasses can affect the estimate of the economic performances of different scenarios of energetic development. On the basis of these considerations, it can be outlined a potential doubling of energy production by renewable energies in the next 10 years, with specific reference of small hydroelectric, biogass and eolic power plants. [Italian] Viene analizzata la capacita' di penetrazione delle fonti di energia rinnovabile e della cogenerazione nel mercato italiano sulla base dello stato di maturazione delle varie tecnologie e gli impatti ambientali ad esse associate. L'articolo mostra che il rispetto del vincolo di Kyoto comporterebbe in ultima analisi non un aggravio dei costi per la collettivita', ma addirittura un risparmio di 11 lire per ogni kWh prodotto, ovvero oltre il 10% rispetto ai costi totali.

  3. Solid waste as renewable source of energy: current and future possibility in Libya

    Tarek A. Hamad

    2014-11-01

    Full Text Available Solid waste holds the greatest potential as biomass source in Libya. The rapid expansion of industry has led to increased urbanization and growing population. These factors have dramatically increased the amount of MSW (municipal solid waste generated in Libya. However, issues related to environmentally sound MSW management—including waste decrease and clearance—have not been addressed sufficiently. This study presents an overview on solid waste that can be used as a source of bioenergy in Libya including MSW, ISW (industrial solid waste, and HSW (health care wastes as biomass sources. The management of solid waste and valorization is based on an understanding of MSW׳s composition and physicochemical characteristics. The results show that organic matter represents 59% of waste, followed by paper–cardboard 12%, plastic 8%, miscellaneous 8%, metals 7%, glass 4%, and wood 2%. The technology of WTE (waste-to-energy incineration, which recovers energy from discarded MSW and produces electricity and/or steam for heating, is recognized as a renewable source of energy and is playing an increasingly important role in MSW management in Libya. This paper provides an overview of this technology, including both its conversion options and its useful products (e.g., electricity, heat, greenhouse gas emissions. The WTE benefits and the major challenges in expanding WTE incineration in Libya are discussed. It also demonstrates that Libya could become an exporter of hydrogen in lieu of oil and natural gas.

  4. An integrated system for the energy production and accumulation from renewable sources: a rural tower prototype

    Di Francesco, Silvia; Petrozzi, Alessandro; Montesarchio, Valeria

    2014-05-01

    This research work presents the implementation of an architectural prototype aiming at the complete energy self-sufficiency through an integrated system based on renewable energy. It is suitable for historical buildings in rural areas, isolated but important from natural and architectonical point of view. In addition to the energy aspects, it is important to protect the impact in terms of land-use and environment. This idea is also especially powerful because in the rural countries there are many little building centers abandoned because they are devoid of a connection to the electric energy grid and methane piping. Thus, taking inspiration from dove towers, architectural typology widespread in central Italy, a virtual model has been developed as an integrated system for renewable energy production, storage and supply. While recovering the ancient tower, it is possible to design and assembly an integrated intelligent system, able to combine energy supply and demand: a new tower that should be flexible, efficient and replicable in other contexts as manufacturing, commercial and residential ones. The prototype has been applied to a real case of study, an ancient complex located in Umbria Region. The sources for electric production installed on the tower are photovoltaics, on the head and shaft of the tower, hydropower and a biomass gasifier providing thermal too. A tank at the head of the tower allows an available hydraulic potential energy, for the turbine at any time, to cover photovoltaic lacks, caused by sudden loss of production, for environmental causes. Conversely, photovoltaic peaks, otherwise unusable, can be used to reload the water from the receiving tank at the foot of the tower, up to the tank in the head. The same underground tank acts as a thermal flywheel to optimize the geothermal heat pumps for the heat and cold production. Keywords: hydropower, photovoltaics, dove tower.

  5. Current Harmonics Compensation in Microgrids Exploiting the Power Electronics Interfaces of Renewable Energy Sources

    Ioannis Bouloumpasis

    2015-03-01

    Full Text Available This work presents a method of current harmonic reduction in a distorted distribution system. In order to evaluate the proposed method a grid with high-order current harmonics is assumed. The reduction of current distortion is feasible due to the pulse modulation of an active filter, which consists of a buck-boost converter connected back-to-back to a polarity swapping inverter. For a practical application, this system would be the power electronic interface of a Renewable Energy Source (RES and therefore it changes a source of harmonics to a damping harmonics system. Using the proposed method, the current Total Harmonic Distortion (THD of the grid is reduced below the acceptable limits and thus the general power quality of the system is improved. Simulations in the MATLAB/SIMULINK platform and experiments have been performed in order to verify the effectiveness of the proposed method.

  6. Renewable Energy in Latvia

    Shipkovs, P.; Kashkarova, G. [Latvian Energy Agency, Riga (Latvia); Shipkovs, M. [Energy-R Ltd., Riga (Latvia)

    1997-12-31

    Latvia is among those countries that do not have gas, coal and, for the time being, also oil resources of its own. The amount of power produced in Latvia does not meet the demand, consequently a part of the power has to be purchased from neighbouring countries. Firewood, peat and hydro resources are the only significant domestic energy resources. Massive decrease of energy consumption has been observed since Latvia regained independence. Domestic and renewable energy resources have been examined and estimated. There are already 13 modern boiler houses operating in Latvia with total installed capacity 45 MW that are fired with wood chips. Latvian companies are involved in the production of equipment. 7 small HPPs have been renewed with the installed capacity 1.85 MW. Wind plant in Ainazi has started its operation, where two modern wind turbines with the capacity of 0.6 MW each have been installed. Mechanism of tariff setting is aligned. Favourable power energy purchasing prices are set for renewable energy sources and small cogeneration plants

  7. Windmill Noise Annoyance, Visual Aesthetics, and Attitudes towards Renewable Energy Sources.

    Klæboe, Ronny; Sundfør, Hanne Beate

    2016-07-23

    A small focused socio-acoustic after-study of annoyance from a windmill park was undertaken after local health officials demanded a health impact study to look into neighborhood complaints. The windmill park consists of 31 turbines and is located in the South of Norway where it affects 179 dwellings. Simple exposure-effect relationships indicate stronger reactions to windmills and wind turbine noise than shown internationally, with the caveat that the sample size is small (n = 90) and responses are colored by the existing local conflict. Pulsating swishing sounds and turbine engine hum are the main causes of noise annoyance. About 60 per cent of those who participated in the survey were of the opinion that windmills degrade the landscape aesthetically, and were far from convinced that land-based windmills are desirable as a renewable energy source (hydropower is an important alternative source of renewables in Norway). Attitudes play an important role in addition to visual aesthetics in determining the acceptance of windmills and the resulting noise annoyance. To compare results from different wind turbine noise studies it seems necessary to assess the impact of important modifying factors.

  8. Windmill Noise Annoyance, Visual Aesthetics, and Attitudes towards Renewable Energy Sources

    Ronny Klæboe

    2016-07-01

    Full Text Available A small focused socio-acoustic after-study of annoyance from a windmill park was undertaken after local health officials demanded a health impact study to look into neighborhood complaints. The windmill park consists of 31 turbines and is located in the South of Norway where it affects 179 dwellings. Simple exposure-effect relationships indicate stronger reactions to windmills and wind turbine noise than shown internationally, with the caveat that the sample size is small (n = 90 and responses are colored by the existing local conflict. Pulsating swishing sounds and turbine engine hum are the main causes of noise annoyance. About 60 per cent of those who participated in the survey were of the opinion that windmills degrade the landscape aesthetically, and were far from convinced that land-based windmills are desirable as a renewable energy source (hydropower is an important alternative source of renewables in Norway. Attitudes play an important role in addition to visual aesthetics in determining the acceptance of windmills and the resulting noise annoyance. To compare results from different wind turbine noise studies it seems necessary to assess the impact of important modifying factors.

  9. Renewable energy resources

    Twidell, John

    2015-01-01

    Renewable Energy Resources is a numerate and quantitative text covering the full range of renewable energy technologies and their implementation worldwide. Energy supplies from renewables (such as from biofuels, solar heat, photovoltaics, wind, hydro, wave, tidal, geothermal, and ocean-thermal) are essential components of every nation's energy strategy, not least because of concerns for the local and global environment, for energy security and for sustainability. Thus in the years between the first and this third edition, most renewable energy technologies have grown from fledgling impact to s

  10. PROFIT MAXIMIZATION AND OPTIMAL SIZING OF RENEWABLE ENERGY SOURCES IN A HYBRID SYSTEM

    YAJVENDER PAL VERMA

    2010-09-01

    Full Text Available The renewable energy sources wind, solar etc. have become very essential and important in the generation mix as a result of rising energy demand and environmental reasons. In addition tax is being imposed on high carbon emission. But the uncertainty and variability associated with renewable such as wind may result in economical andtechnical problems in the power system. In order to compensate wind intermittency, generation resources such as gas plant, pumped storage unit etc. are employed due to their lesser start up time, lower operating cost and good ramping capabilities. This paper proposes a model which investigates the combined operation of thermal, wind andpumped storage units for the profit maximization in varying wind, load, and price scenarios. The optimal size of the pumped storage unit to be used has been obtained after putting the system to different operating conditions such as varying wind power and load demand, imposing tax on carbon emission and varying ramping limits etc. The model has been applied on IEEE-30 bus test data and satisfactory results have been obtained for optimal hybrid systemoperation.

  11. The competition of different measures to increase flexibility in energy systems with a high share of fluctuating renewable energy sources

    Brunner, Christoph; Teufel, Felix [EnBW Energie Baden-Wuerttemberg AG, Karlsruhe (Germany). Research and Innovation Dept.

    2013-04-01

    The continuous expansion of electricity generation from intermittent renewable energy sources (RES) is changing the present generation structure that has been designed to follow fluctuating demand considerably. In order to utilise a high share of supply-dependent RES, the future energy system needs to become more flexible than it is today. This paper describes the different flexibility options that can be implemented with regard to their major restrictions as well as their suitability to balance a certain deficit or surplus of RES generation. Furthermore, it outlines the importance of competition between these different balancing measures to meet the required level of flexibility at lowest cost. (orig.)

  12. Renewables | Energies renouvelables

    2012-05-01

    Full Text Available World Energy Generated for Commercial Use by Type*Production mondiale d’énergie destinée à des applications commerciales, par type*­Main ProducersPrincipaux producteurs* Renewables also include biomass, yet most of it is used for energy generation for non-commercial purposes. | Les énergies renouvelables incluent la biomasse, mais celle-ci sert essentiellement à générer de l’énergie qui ne rentre pas dans les circuits commerciaux.Source: British Petroleum, BP Statistical Review of World Energ...

  13. Electrical energy generation in Europe the current situation and perspectives in the use of renewable energy sources and nuclear power for regional electricity generation

    Morales Pedraza, Jorge

    2015-01-01

    The present book maximizes reader insights into the current and future roles to be played by different types of renewable energy sources and nuclear energy for the purpose of electricity generation in the European region as a whole and in a select group of European countries specifically. This book includes detailed analysis of the different types of renewable energy sources available in different European countries; the pros and cons of the use of the different types of renewables and nuclear energy for electricity generation; which energy options are available in the different European coun

  14. Hydrogen rich gas from oil palm biomass as a potential source of renewable energy in Malaysia

    Mohammed, M.A.A.; Salmiaton, A.; Wan Azlina, W.A.K.G.; Mohammad Amran, M.S.; Fakhru' l-Razi, A. [Department of Chemical and Environmental Engineering, Faculty of Engineering, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor (Malaysia); Taufiq-Yap, Y.H. [Centre of Excellence for Catalysis Science and Technology and Department of Chemistry, Faculty of Science, University Putra Malaysia, 43400 UPM Serdang, Selangor (Malaysia)

    2011-02-15

    Oil palm is one of the major economic crops in many countries. Malaysia alone produces about 47% of the world's palm oil supply and can be considered as the world's largest producer and exporter of palm oil. Malaysia also generates huge quantity of oil palm biomass including oil palm trunks, oil palm fronds, empty fruit bunches (EFB), shells and fibers as waste from palm oil fruit harvest and oil extraction processing. At present there is a continuously increasing interest in the utilization of oil palm biomass as a source of clean energy. One of the major interests is hydrogen from oil palm biomass. Hydrogen from biomass is a clean and efficient energy source and is expected to take a significant role in future energy demand due to the raw material availability. This paper presents a review which focuses on different types of thermo-chemical processes for conversion of oil palm biomass to hydrogen rich gas. This paper offers a concise and up-to-date scenario of the present status of oil palm industry in contributing towards sustainable and renewable energy. (author)

  15. SUSTAINABLE TOURISM AND HOTEL MANAGEMENT IN MACEDONIA THROUGH THE USE OF RENEWABLE ENERGY SOURCES

    Biljana Petrevska

    2016-06-01

    Full Text Available This study aimed to investigate the nature of energy applied in hotel industry in Macedonia. It explored the indicators for resources application in three, four and five star hotels. The data were collected by means of an online survey conducted among 45 managers and department supervisors. It is found that large number of hotels lack measures to reduce the conventional energy use and replace it with renewable sources of energy. Considering the fact that energy use is a substantial cost factor, the modest and restricted application of geothermal energy, biofuels and photocell lightening is extremely alarming for achieving sustainable tourism development. The study concludes that Macedonian hotels although being fully aware of importance of energy efficiency concept, it is not their managerial priority. It further pointed out that the development and operation of sustainable hotels requires properly planned and designed environmental protection practices. Finally, the study recommends that instead of being driven by increased number of tourists regardless the environmental concern, Macedonian hotels should pay attention and become eco-friendly and be focused on applying environmental oriented practices. At the same time, the research poses new challenges that urgently need to be brought to hotel management in the line of achieving sustainable tourism development.

  16. Opportunities for the compensation of the fluctuation feed-in from renewable energy sources. Study commissioned by the German Renewable Energy Federation; Moeglichkeiten zum Ausgleich Fluktuierender Einspeisungen aus Erneuerbaren Energien. Studie im Auftrag des Bundesverbandes Erneuerbare Energie

    Krzikalla, Norbert; Achner, Siggi; Bruehl, Stefan [BET Buero fuer Energiewirtschaft und technische Planung GmbH, Aachen (Germany)

    2013-05-01

    The platform 'system transformation' of the German Renewable Energy Federation (Berlin, Federal Republic of Germany) accompanies the forthcoming restructuring of the energy supply towards 100 percent renewable energy. The previous discussions of this platform provided two results: the fluctuating renewable energies must be placed at the center of considerations in order to enable a sustainable system design and market design. Furthermore, the question of how the fluctuating feed-in from renewable energy sources can be compensated has to be answered. Under this aspect, the contribution under consideration reports on these compensation options. There are different flexibility options available in order to create a safe, environmentally sustainable and affordable energy system.

  17. Marine Renewable Energy Seascape

    Alistair G.L. Borthwick

    2016-03-01

    Full Text Available Energy production based on fossil fuel reserves is largely responsible for carbon emissions, and hence global warming. The planet needs concerted action to reduce fossil fuel usage and to implement carbon mitigation measures. Ocean energy has huge potential, but there are major interdisciplinary problems to be overcome regarding technology, cost reduction, investment, environmental impact, governance, and so forth. This article briefly reviews ocean energy production from offshore wind, tidal stream, ocean current, tidal range, wave, thermal, salinity gradients, and biomass sources. Future areas of research and development are outlined that could make exploitation of the marine renewable energy (MRE seascape a viable proposition; these areas include energy storage, advanced materials, robotics, and informatics. The article concludes with a sustainability perspective on the MRE seascape encompassing ethics, legislation, the regulatory environment, governance and consenting, economic, social, and environmental constraints. A new generation of engineers is needed with the ingenuity and spirit of adventure to meet the global challenge posed by MRE.

  18. Introduction of renewable energy sources in the district heating system of Greece

    Nikolaos Margaritis

    2016-06-01

    Full Text Available The district heating (DH system of Greece, mainly supported from lignite fired stations, is facing lately significant challenges. Stricter emission limits, decreased efficiency due to old age and increased costs are major challenges of the lignite sector and are expected to result in the decommissioning of several lignite-fired units in the coming years. As a result, managers of DH networks are currently investigating alternative scenarios for the substitution of thermal power that it is expected to be lost, through the integration of Renewable Energy Sources (RES into the system. In this paper, the DH systems of Kozani and Ptolemaida are examined regarding possible introduction of RES. The first study examines district heating of Kozani and alternative future options for covering a part of city’s thermal load whereas the second study refers to a biomass CHP plant (ORC technology, 1MWe, 5MWth to be powered from a biomass mixture (wood chips and straw.

  19. Regulation of Renewable Energy Sources to Optimal Power Flow Solutions Using ADMM: Preprint

    Zhang, Yijian; Hong, Mingyi; Dall' Anese, Emiliano; Dhople, Sairaj; Xu, Zi

    2017-03-03

    This paper considers power distribution systems featuring renewable energy sources (RESs), and develops a distributed optimization method to steer the RES output powers to solutions of AC optimal power flow (OPF) problems. The design of the proposed method leverages suitable linear approximations of the AC-power flow equations, and is based on the Alternating Direction Method of Multipliers (ADMM). Convergence of the RES-inverter output powers to solutions of the OPF problem is established under suitable conditions on the stepsize as well as mismatches between the commanded setpoints and actual RES output powers. In a broad sense, the methods and results proposed here are also applicable to other distributed optimization problem setups with ADMM and inexact dual updates.

  20. Phase Change Material Based Accumulation Panels in Combination with Renewable Energy Sources and Thermoelectric Cooling

    Jan Skovajsa

    2017-01-01

    Full Text Available The article deals with the use of modern materials and technologies that can improve the thermal comfort in buildings. The article describes the design and usage of a special accumulation device, which is composed of thermal panels based on phase change materials (PCMs. The thermal panels have an integrated tube heat exchanger and heating foils. The technology can be used as a passive or active system for heating and cooling. It is designed as a “green technology”, so it is able to use renewable energy sources, e.g., photovoltaic (PV panels, solar thermal collectors and heat pumps. Moreover, an interesting possibility is the ability to use thermoelectric coolers. In the research, measurements of the different operating modes were made, and the results are presented in the text. The measurement approves that the technology improves the thermal capacity of the building, and it is possible to use it for active heating and cooling.

  1. Bolivia renewable energy development

    Smith, P.

    1997-12-01

    The author summarizes changes which have occurred in Bolivia in the past year which have had an impact on renewable energy source development. Political changes have included the privatization of power generation and power distribution, and resulted in a new role for state level government and participation by the individual. A National Rural Electrification Plan was adopted in 1996, which stresses the use of GIS analysis and emphasizes factors such as off grid, economic index, population density, maintenance risk, and local organizational structure. The USAID program has chosen to stress economic development, environmental programs, and health over village power programs. The national renewables program has adopted a new development direction, with state projects, geothermal projects, and private sector involvement stressed.

  2. Renewable Energy Technology

    Daugherty, Michael K.; Carter, Vinson R.

    2010-01-01

    In many ways the field of renewable energy technology is being introduced to a society that has little knowledge or background with anything beyond traditional exhaustible forms of energy and power. Dotson (2009) noted that the real challenge is to inform and educate the citizenry of the renewable energy potential through the development of…

  3. Marine Renewable Energies

    Azzellino, Arianna; Conley, Daniel; Vicinanza, Diego

    2013-01-01

    Countries with coastlines may have valuable renewable energy resources in the form of tides, currents, waves, and offshorewind.The potential to gather energy from the sea has recently gained interest in several nations, so Marine Renewable Energy Installations (hereinafter MREIs) will likely become...

  4. Renewable Energy in Alaska

    2013-03-01

    This report examines the opportunities, challenges, and costs associated with renewable energy implementation in Alaska and provides strategies that position Alaska's accumulating knowledge in renewable energy development for export to the rapidly growing energy/electric markets of the developing world.

  5. Public utilities with renewable energy sources. Proceedings; Stadtwerke mit Erneuerbaren Energien. Konferenzbeitraege

    NONE

    2008-07-01

    Within the Second EUROSOLAR Conference of EUROSOLAR, the European Association for Renewable Energy (Bonn, Federal Republic of Germany) between 15th and 16th May, 2008, at the Waterworks Braunschweig (Federal Republic of Germany), the following lectures were held: (1) The municipal public utility: The paradigm shift from power distribution companies to municipal infrastructure provider (C. Jaenig); (2) Public utilities and their concepts (Z. Meszaros); (3) The BS Energy Group (U.Lehmann-Grube); (4) New ways with energy (T. Westerheide); (5) Public utilities and their concepts (R. Edzards); (6) Public utilities with renewable energy (P. Asmuth); (7) Total concept of the public utility Wolfhagen (M. Ruehl); (8) Municipal energy concepts for the expansion of the combined heat and power generation and renewable energies (J. van Bergen); (9) Storage of renewable energy (T. Blank); (10) Public utility as a confident partner of a renewable regional economy (R. Hemmers); (11) The regenerative combined cycle power plant (M. Meyr); (12) The solar power system of systaic (O. Achilles); (13) The concession contract as an instrument for restructuring (J. Schwarz); (14) EEG 2009, GasNZV and EEWaermeG: The changed legal framework as a chance for a restructured power generation (M. Altrock).

  6. Renewable Energy Country Profiles. Pacific

    NONE

    2012-09-15

    The IRENA Renewable Energy Country Profiles take stock of the latest development of renewable energy in two regions where renewable energy can make a significant contribution to combat climate change and bring modern energy services to everyone: Africa and the Pacific. These two regions are presented separately in this volume and its sister publication. The country profiles combine elements of IRENA analysis with the latest information available from a vast array of sources in order to give a brief yet comprehensive and up-to-date picture of the situation of renewable energy that includes energy supply, electrical capacity, energy access, policies, targets, investment climate, projects and endowment in renewable energy resources. Because of the different timelines of these sources, data presented here refer to years between 2008 and 2012. Data availability also differs from country to country, which makes comparison with a wider regional group possible only for the year for which figures are available for all the members of the group; while this may not be the most recent year, the differences between countries, regions and the world remain striking. The current country profiles are just a starting point; they will be extended upon with new indicators to make them more informative, and maintained as a live product on the IRENA website as a key source of information on renewable energy.

  7. Renewable Energy Country Profiles. Africa

    NONE

    2012-02-15

    The IRENA Renewable Energy Country Profiles take stock of the latest development of renewable energy in two regions where renewable energy can make a significant contribution to combat climate change and bring modern energy services to everyone: Africa and the Pacific. These two regions are presented separately in this volume and its sister publication. The country profiles combine elements of IRENA analysis with the latest information available from a vast array of sources in order to give a brief yet comprehensive and up-to-date picture of the situation of renewable energy that includes energy supply, electrical capacity, energy access, policies, targets, investment climate, projects and endowment in renewable energy resources. Because of the different timelines of these sources, data presented here refer to years between 2008 and 2012. Data availability also differs from country to country, which makes comparison with a wider regional group possible only for the year for which figures are available for all the members of the group; while this may not be the most recent year, the differences between countries, regions and the world remain striking. The current country profiles are just a starting point; they will be extended upon with new indicators to make them more informative, and maintained as a live product on the IRENA website as a key source of information on renewable energy.

  8. Special report on renewable energy sources and climate change mitigation, (SRREN). Summary for policy makers; FNs klimapanel: Spesialrapport om fornybar energi, sammendrag for beslutningstakere

    2011-06-15

    In May 2011 the Intergovernmental Panel on Climate Change published a report on six renewable energy sources and their role in climate change mitigation. This is a Norwegian, unofficial translation of the Summary for Policy makers. (Author)

  9. Integration of Renewable Energy Sources in Future Power Systems: The Role of Storage

    Weitemeyer, Stefan; Vogt, Thomas; Agert, Carsten

    2014-01-01

    Integrating a high share of electricity from non-dispatchable Renewable Energy Sources in a power supply system is a challenging task. One option considered in many studies dealing with prospective power systems is the installation of storage devices to balance the fluctuations in power production. However, it is not yet clear how soon storage devices will be needed and how the integration process depends on different storage parameters. Using long-term solar and wind energy power production data series, we present a modelling approach to investigate the influence of storage size and efficiency on the pathway towards a 100% RES scenario. Applying our approach to data for Germany, we found that up to 50% of the overall electricity demand can be met by an optimum combination of wind and solar resources without both curtailment and storage devices if the remaining energy is provided by sufficiently flexible power plants. Our findings show further that the installation of small, but highly efficient storage devic...

  10. High step-up isolated efficient single switch DC-DC converter for renewable energy source

    A. Gopi

    2014-12-01

    Full Text Available In this paper, an isolated high step-up single switch DC-DC converter for renewable energy source is proposed. In the proposed converter high step-up voltage is obtained by single power switching technique that operates low duty cycle with isolated transformer inductors and switched capacitors and power diodes. The disadvantage of conventional converters is that it has high duty ratio and high voltage stress on power devices with less efficiency. The proposed converter eliminates the switching losses and recycles the leakage energy which includes reverse recovery energy of the power diode by using passive clamp circuit. To achieve high output voltage gain, the isolated transformer primary terminal and secondary terminal are connected in series during switching operation. PSIM software has been used for simulation. Simulation circuit is analyzed at 40Vdc/400Vdc, 200 W and this operation is validated by implementing in the hardware model at 12Vdc/120Vdc, 60 W.

  11. Strategies for the integration of intermittent renewable energy sources in the electrical system

    Romanelli, Francesco

    2016-03-01

    Europe is pursuing an aggressive programme to increase its share of renewable energy source (RES). However, the integration of intermittent RES (wind and photovoltaic) in the electrical system requires either maintaining in operation thermal backup systems or providing a substantial amount of electricity storage. We analyze the Italian electricity data for the year 2013 provided by the transmission system operator TERNA. The present level of intermittent RES power is scaled-up to a level at which it generates an amount of electricity equal to the annual demand. While a substantial reduction of the energy annually produced by fossil backup systems (and the associated CO2 emission) with respect to the no-RES case is possible in many scenarios considered here, the backup power is generally only marginally reduced below the value in the absence of RES. The strategy proposed is based on the combination of a modest amount of storage (0.5-5TWh) and base-load power (6-15GW, to be used during the seasons of low RES production). In this way the non-RES installed power can be reduced from ˜ 50 GW to less than 15GW and could be covered by a combination of biomass and nuclear energy without any CO2 emission.

  12. Factors of impact on the evolution of electricity markets from renewable energy sources: a comparison between Romania and Germany

    Clodnițchi Roxana

    2015-06-01

    Full Text Available When talking about the future of Europe we also think about alternative energy sources. It is up to national governments to decide how to encourage investments in this field in order to contribute to the 20-20-20 EU-objective. Until the network delivery cost for electricity produced from renewable sources will be comparable to the cost for energy from traditional sources ("grid parity", the development of businesses and markets for electricity from renewable sources is going to be driven by support schemes. The state of the grids and the facility of grid-access constitute another two key factors influencing the development of this sector. Last but not least, the question of policy consistency is raised within the business community. Over the past years some support schemes have proved to be more effective than others, and grid conditions have also evolved. Policies supporting the development of renewables also changed at EU-level and at national levels. Based on statistics, scientific literature and the feedback of the business community, this study aims to analyse the development of renewable energy sectors in the European Union by comparing Germany’s and Romania’s experience. Also this study describes the current and expected future market situation in these countries relying on data gained from questionnaires and interviews with specialists in the renewable field.

  13. Encouraging the use of renewable energy sources in the implementation of the EU energy performance building directive

    Beerepoot, M. [OTB Research Institute for Housing, Urban and Mobility Studies/Delft University of Technology (Netherlands); Engelund Thomsen, K. [Danish Building andUrgban Reseach, Horsholm (Denmark)

    2004-07-01

    The recent EC Directive on the Energy Performance of Buildings (Directive 2002/91/EC, in short: EPBD) will urge member states to develop and design energy performance regulations before 2006. The international EC Fifth Framework Altener research project Build-On-RES2 was formulated with this objective in mind. The Build-On-RES project aims to develop the methodological and contextual framework to maximise the incorporation of renewable energy sources (RES) in an Energy Performance Method for both new and for existing residential buildings. Build-On-RES started by benchmarking energy regulations in five of the EU member states that have experience of energy performance regulations and scrutinised the extent to which they encourage the use of RES in buildings. In addition to energy regulations, other policy schemes that encourage use of RES techniques like financial incentives and schemes based on communication have been collected and described. On the basis of this collection of existing information, the project is designing a framework to maximise the incorporation of RES in an Energy Performance Method for use by member states that are in the process of (re)designing their (new) energy performance building regulations. This paper describes the results of the Build-on-RES research and presents in short the methodological and contextual framework to maximise the incorporation of RES in an Energy Performance Method. (orig.)

  14. Marginal share of renewable energy sources of variable electricity generation: A contribution to the concept definition

    Grković Vojin R.

    2015-01-01

    Full Text Available Technology development is a keystone within the efforts toward enabling longer duration of the world fossil energy resources. The past development and the technologies applied, cause huge emissions of СО2 that must be significantly reduced. Increased usage of renewable energy sources for electricity generation (RES-e contributes essentially to the reduction of CO2, but on the other hand, under current conditions of feed-in priority reduces also the market for the electricity from fossil fuelled power plants (FFPP. The other possibility for reduction of CO2 emissions is to apply carbon capture and storage technologies as a part of overall FFPP technologies. A hypothesis presented in this paper is that there is a marginal share of RES variable electricity in overall annual electricity supply after which further increase of RES-e participation produces higher average electricity generated cost, than in the case of CO2 emission reduction by applying CCS technologies. The presented work confirms this hypothesis. Value of the marginal share depends to the price of RES-e feed-in. With the price span from 13.5 to 7.5€c/kWh, the marginal share is under 50%.

  15. The potentional of renewable energy sources for greenhouse gases emissions reduction in Macedonia

    Dedinec Aleksandar

    2012-01-01

    Full Text Available As European Union (EU candidate country, Macedonia is in the process of adoption of the EU strategic energy policies, harmonization of the national legislation with the EU legislation and defining the respective national goals. In this regard, the government has recently adopted a National Strategy for Utilization of Renewable Energy Sources (RES, prepared by ICEIM-MANU. The main goal of this paper is to assess the potential for greenhouse gases (GHG emissions reduction by implementation of 21%-RES-scenarios from the Strategy. The corresponding emissions reduction is calculated against the baseline (reference scenario developed within the Second National Communication on Climate Change. Furthermore, all potential RES technologies are analyzed from economic aspect and combined in a form of emissions reduction cost curve, displaying the total marginal cost of the GHG emissions reduction by RES. Finally, on the bases of the environmental and economic effectiveness of the considered RES technologies, as well as taking into account the country specific barriers, the priority actions for GHG emissions reduction are identified.

  16. Impacts of large-scale Intermittent Renewable Energy Sources on electricity systems, and how these can be modeled

    Brouwer, Anne Sjoerd; Van Den Broek, Machteld; Seebregts, Ad; Faaij, André

    2014-01-01

    The electricity sector in OECD countries is on the brink of a large shift towards low-carbon electricity generation. Power systems after 2030 may consist largely of two low-carbon generator types: Intermittent Renewable Energy Sources (IRES) such as wind and solar PV and thermal generators such as p

  17. Power electronics for renewable energy systems

    Iov, Florin; Blaabjerg, Frede

    2009-01-01

    sources from the conventional, fossil (and short term) based energy sources to renewable energy resources. Another is to use high efficient power electronics in power generation, power transmission/distribution and end-user application. This paper discuss some of the most emerging renewable energy sources......, wind energy and photovoltaics, which by means of power electronics are changing from being minor energy sources to be acting as important power sources in the energy system....

  18. Current Renewable Energy Technologies and Future Projections

    Allison, Stephen W [ORNL; Lapsa, Melissa Voss [ORNL; Ward, Christina D [ORNL; Smith, Barton [ORNL; Grubb, Kimberly R [ORNL; Lee, Russell [ORNL

    2007-05-01

    The generally acknowledged sources of renewable energy are wind, geothermal, biomass, solar, hydropower, and hydrogen. Renewable energy technologies are crucial to the production and utilization of energy from these regenerative and virtually inexhaustible sources. Furthermore, renewable energy technologies provide benefits beyond the establishment of sustainable energy resources. For example, these technologies produce negligible amounts of greenhouse gases and other pollutants in providing energy, and they exploit domestically available energy sources, thereby reducing our dependence on both the importation of fossil fuels and the use of nuclear fuels. The market price of renewable energy technologies does not reflect the economic value of these added benefits.

  19. A review of net metering mechanism for electricity renewable energy sources

    Andreas Poullikkas, George Kourtis, Ioannis Hadjipaschalis

    2013-01-01

    Full Text Available In this work, an overview of the net metering mechanism for renewable energy sources for power generation (RES-E systems is carried out. In particular, the net metering concept is examined with its benefits and misconceptions. Furthermore, a survey of the current operational net metering schemes in different countries in the world, such as, in Europe, USA, Canada, Thailand and Australia, is carried out. The survey indicated that there are different net metering mechanisms depending on the particularities of each country (or state in the case of USA. Especially, in Europe, only five countries are using net metering in a very simple form, such as, any amount of energy produced by the eligible RES-E technology is compensated from the energy consumed by the RES-E producer, which results to either a less overall electricity bill or to an exception in payment energy taxes. In the USA and the USA territories, any customer’s net excess generation is credited to the customer’s next electricity bill for a 12-month billing cycle at various rates or via a combination between rates. The actual type of net excess generation (NEG credit is decided by a number of set criteria, such as the type of RES-E technology, the RES-E capacity limit, the type of customer and the type of utility. Regarding any excess credit at the end of the 12-month billing cycle, this is either granted to the utilities, or carries over indefinitely to the customer’s next electricity bill, or is reconciled annually at any rate, or provides an option to the customer to choose between the last two options.

  20. A review of net metering mechanism for electricity renewable energy sources

    Poullikkas, Andreas; Kourtis, George; Hadjipaschalis, Ioannis [Electricity Authority of Cyprus, P.O. Box 24506, 1399 Nicosia (Cyprus)

    2013-07-01

    In this work, an overview of the net metering mechanism for renewable energy sources for power generation (RES-E) systems is carried out. In particular, the net metering concept is examined with its benefits and misconceptions. Furthermore, a survey of the current operational net metering schemes in different countries in the world, such as, in Europe, USA, Canada, Thailand and Australia, is carried out. The survey indicated that there are different net metering mechanisms depending on the particularities of each country (or state in the case of USA). Especially, in Europe, only five countries are using net metering in a very simple form, such as, any amount of energy produced by the eligible RES-E technology is compensated from the energy consumed by the RES-E producer, which results to either a less overall electricity bill or to an exception in payment energy taxes. In the USA and the USA territories, any customer’s net excess generation is credited to the customer’s next electricity bill for a 12-month billing cycle at various rates or via a combination between rates. The actual type of net excess generation (NEG) credit is decided by a number of set criteria, such as the type of RES-E technology, the RES-E capacity limit, the type of customer and the type of utility. Regarding any excess credit at the end of the 12-month billing cycle, this is either granted to the utilities, or carries over indefinitely to the customer’s next electricity bill, or is reconciled annually at any rate, or provides an option to the customer to choose between the last two options.

  1. Adaptive Procurement Guidelines for Automatic Selection of Renewable Forest Energy Sources within a Sustainable Energy Production System

    Teijo Palander

    2016-03-01

    Full Text Available An automatic forest-stand selection method was developed that integrates the procurement of profitable energy sources within a sustainable energy production system. We tested the method using a forest harvester simulator. We found that site-specific estimates of forest characteristics are important when predicting the potential of an energy-wood stand as a renewable energy source. Further, tree parameters can be combined with automatic stem measurements from a multiple-tree harvester to predict the energy-wood biomass in the stands. The selection process uses data from profitability studies. The selection process also uses environmental criteria to ensure that sufficient soil organic matter is left behind and to protect the soil against erosion. The integrated system of the harvester automatically adapts the system’s models and stand-selection rules to account for various site-specific stand parameters. Predicting the profitable and environmentally acceptable yield of stand biomass has great potential in sustainable forest resource management, but managers must decide whether the operational procurement guidelines provided by the stand-selection method is acceptable under their local real-world wood procurement conditions.

  2. POTENTIAL AND PROPERTIES OF THE GRANULAR SEWAGE SLUDGE AS A RENEWABLE ENERGY SOURCE

    Sebastian Werle

    2013-01-01

    Full Text Available The predominant method of the sewage sludge management in Poland is land dis-posal. However, since 01/01/2013, this method will be prohibited. Therefore, there is a strong need for the development of thermal methods of sludge disposal. In Polish legal system sewage sludge may be named as biomass or waste. For the purposes of determining the obligations of environmental regulations the definitionof the Minister of Environment should be used. When disposing of sewage sludge in an amount up to 1% by weight of fuel, emission standards for fuel do not change. At the disposal of sewage in quantities of more than 1%, should be conducted continuous measurement of emissions, including HCl, HF, and continuous measurements of fluegas param-eters (as for the installation of waste disposal. In order to meet the requirement to porduce energy from renewable sources we use the definitionof Minister of Economy. In this case, in accordance with applicable law, sewage sludge shall be considered as pure biomass, thus it is CO2 neutral. The use of sewage sludge as a fuel requires the determination of fundamental combustible properties. These properties should be in accordance with the requirements put fuels as an energy source. The paper presents the results of a detailed physico-chemical analysis of dried sewage sludge produced in the two Polish wastewater treatment plants. The results were compared with fiverepresentatives of biomass fuels: straw of wheat, straw of rape, willow, pine and oak sawdust. Ultimate and proximate analyses include a detailed analysis of fuel and ash. The results clearly indicate that sludge is a very valuable fuel similar to “traditional” biomass.

  3. Main types of technical facilities used in poland agricultural sector for obtaining energy from renewable sources of various nature

    Antonina Kalinichenko

    2014-11-01

    Full Text Available The article presents the main ways of heat and electric energy supply of farms in Poland, using energy from renewable sources. Particular attention is paid to the relevant requirements for technical support of energy supply processes. It is assumed that in agriculture production and rural areas in Poland soon the number of used conventional fuels, including natural gas and coal, will change significantly, for the use of biomass, solar, geothermal and wind energy. Devices that are designed for use almost unlimited supply of renewable energy are: heat pumps, solar panels, photo-electric elements, wind and hydrostations. The main effect is as traditional energy saving and reduction of technogenic impact on the environment, and increasing of energy security level, creating new workplaces and promote regional development

  4. Hydrogen Generation Through Renewable Energy Sources at the NASA Glenn Research Center

    Colozza, Anthony; Prokopius, Kevin

    2007-01-01

    An evaluation of the potential for generating high pressure, high purity hydrogen at the NASA Glenn Research Center (GRC) was performed. This evaluation was based on producing hydrogen utilizing a prototype Hamilton Standard electrolyzer that is capable of producing hydrogen at 3000 psi. The present state of the electrolyzer system was determined to identify the refurbishment requirements. The power for operating the electrolyzer would be produced through renewable power sources. Both wind and solar were considered in the analysis. The solar power production capability was based on the existing solar array field located at NASA GRC. The refurbishment and upgrade potential of the array field was determined and the array output was analyzed with various levels of upgrades throughout the year. The total available monthly and yearly energy from the array was determined. A wind turbine was also sized for operation. This sizing evaluated the wind potential at the site and produced an operational design point for the wind turbine. Commercially available wind turbines were evaluated to determine their applicability to this site. The system installation and power integration were also addressed. This included items such as housing the electrolyzer, power management, water supply, gas storage, cooling and hydrogen dispensing.

  5. Determination of biogas generation potential as a renewable energy source from supermarket wastes.

    Alkanok, Gizem; Demirel, Burak; Onay, Turgut T

    2014-01-01

    Fruit, vegetable, flower waste (FVFW), dairy products waste (DPW), meat waste (MW) and sugar waste (SW) obtained from a supermarket chain were anaerobically digested, in order to recover methane as a source of renewable energy. Batch mesophilic anaerobic reactors were run at total solids (TS) ratios of 5%, 8% and 10%. The highest methane yield of 0.44 L CH4/g VS(added) was obtained from anaerobic digestion of wastes (FVFW+DPW+MW+SW) at 10% TS, with 66.4% of methane (CH4) composition in biogas. Anaerobic digestion of mixed wastes at 5% and 8% TS provided slightly lower methane yields of 0.41 and 0.40 L CH4/g VS(added), respectively. When the wastes were digested alone without co-substrate addition, the highest methane yield of 0.40 L CH4/g VS(added) was obtained from FVFW at 5% TS. Generally, although the volatile solids (VS) conversion percentages seemed low during the experiments, higher methane yields could be obtained from anaerobic digestion of supermarket wastes. A suitable carbon/nitrogen (C/N) ratio, proper adjustment of the buffering capacity and the addition of essential trace nutrients (such as Ni) could improve VS conversion and biogas production yields significantly.

  6. Analysis of SFCL’s in DC System with Renewable Energy Sources

    S. Mohanram

    2015-12-01

    Full Text Available Superconducting fault-current limiters (SFCLs have been the subject of research and development for many years and offer an attractive solution to the problem of rising fault levels in electrical distribution systems. SFCLs can greatly reduce fault currents and the damage at the point of fault, and help improve the stability of a power system. Superconducting fault-current limiters (SFCL provide a new efficient approach to the reliable handling of such faults.(SCFLs can be used for various nominal voltages and currents, and can be adapted to particular limiting characteristics in case of short circuits. In this project, dc resistive type superconducting fault current limiter (SFCL is presented. This SFCL is designed for the HVDC system. Uniform current and voltage sharing among the SFCL modules can be observed through contact resistance tests, dc flow-through tests, and ac flow-through tests. Results of tests show that each limiting module has good uniformity in higher current system. The proposed concept can be implemented using renewable energy sources. The results are presented by using Matlab / simulink platform.

  7. Power Electronics for Renewable Energy Systems

    Choi, U. M.; Lee, K. B.; Blaabjerg, Frede

    2012-01-01

    The use of renewable energy sources are increased because of the depletion of natural resources and the increasing pollution level from energy production. The wind energy and the solar energy are most widely used among the renewable energy sources. Power electronics is needed in almost all kinds...... of renewable energy system. It controls the renewable source and interfaces with the load effectively, which can be grid-connected or van work in stand-alone mode. In this presentation, overview of wind and photovoltaic energy systems are introduced. Next, the power electronic circuits behind the most common...

  8. Region 9 Renewable Energy

    U.S. Environmental Protection Agency — Renewable energy production is expected to increase significantly in the next 25 years. The U.S. Environmental Protection Agency (EPA) Office of Solid Waste and...

  9. Electricity sector in Mexico. Current status. Contribution of renewable energy sources

    Cancino-Solorzano, Yoreley [Departamento de Ing. Electrica-Electronica, Instituto Tecnologico de Veracruz, Calzada Miguel A. de Quevedo 2779, 91860 Veracruz (Mexico); Villicana-Ortiz, Eunice; Gutierrez-Trashorras, Antonio J.; Xiberta-Bernat, Jorge [Departamento de Energia, Escuela Tecnica Superior de Ingenieros de Minas, Universidad de Oviedo, C/Independencia, 13, 2a Planta, 33004 Oviedo (Spain)

    2010-01-15

    The challenge facing the world electricity sector is the cost incurred in maintaining the system and seeing to the environmental effects it causes. In Mexico the grid is supplied by thermal plants fed by oil products. Its great potential of renewable energies clearly shown in studies by national and international scholars has led the government to become more committed to take advantage of these energies. The goal is to reduce dependence on fossil fuels to generate electricity and to reduce the emission of greenhouse gases. In this article we analyse the current state of renewable energies, the conditions needed to foster them and the legislative changes already introduced to promote their greater part in the national electricity grid. (author)

  10. Promoting Renewable Energy Technologies

    Olsen, Ole Jess; Skytte, Klaus

    % of its annual electricity production. In this paper, we present and discuss the Danish experience as a case of promoting renewable energy technologies. The development path of the two technologies has been very different. Wind power is considered an outright success with fast deployment to decreasing...... technology and its particular context, it is possible to formulate some general principles that can help to create an effective and efficient policy for promoting new renewable energy technologies....

  11. Wind energy renewable energy and the environment

    Nelson, Vaughn; Nelson, Vaughn

    2009-01-01

    Due to the mounting demand for energy and increasing population of the world, switching from nonrenewable fossil fuels to other energy sources is not an option-it is a necessity. Focusing on a cost-effective option for the generation of electricity, Wind Energy: Renewable Energy and the Environment covers all facets of wind energy and wind turbines. The book begins by outlining the history of wind energy, before providing reasons to shift from fossil fuels to renewable energy. After examining the characteristics of wind, such as shear, power potential, and turbulence, it discusses the measur

  12. Electrical Supply System for the Experimental Zero-Energy Building (of 300 m2 Based on Renewable and Alternative Energy Sources

    Basok, B.I.

    2015-11-01

    Full Text Available The results of the development and implementation of the power supply system of the experimental zero-energy building based on renewable and alternative energy sources are presented. CDF-model to determine the optimal conditions for the deployment of wind energy installations within the building limits is developed.

  13. BASIC APPROACHES TO THE RESEARCH OF RENEWABLE SOURCES OF ENERGY AS THE ENERGY POTENTIAL OF TERRITORIES AND BUILT-UP AREAS

    Poddaeva Olga Igorevna

    2012-10-01

    renewable sources of energy include water, sun, and wind. Wind power engineering best fits the conditions of the Russian territories. However, experts believe that the wind power is to be backed by other sources due to the irregularity of its generation. This approach to the power generation and planning of territories coupled with the integration of renewable energy technologies into architectural designs of buildings and structures will make it possible to identify the prerequisites for the energy generation specialization of the subjects of the Russian Federation on the basis of their climatic conditions and urban development patterns. Private investments into renewable sources of energy will assure sustainable population settlement patterns and optimal energy generation and consumption.

  14. Renewable energy islands in Europe

    Oestergaard, Iben [ed.

    1998-12-31

    This publication includes a compiled presentation of various aspects concerning the possible transformation of some European islands into renewable energy communities and these projects were presented by a selection of pioneer islands at the first European Seminar on Renewable Energy Islands, held on the Danish island of Samsoee, 29-30 June 1998. This issue has increased in importance with the presentation of the ambitious EU-White Paper: `Energy for the future: Renewable Sources of Energy` which was adopted in 1998. One of the key elements of the strategy for an accelerated implementation of renewable energy is to transform 100 localities within Europe into communities which are to be 100% self-sufficient with renewable energy before 2010. In line with this strategy, the Danish Government appointed the island of Samsoe towards the end of 1997 to be the first `official` Danish, renewable energy island. This is to serve as a demonstration project for other local communities, both in Denmark as well as in the rest Europe. Gothland, Madeira, Canary Islands, Cape Verde, Arki, Crete, Minorca and Orkney Islands were represented. Environmental advantages of wind, solar and wave power for distant island communities were indicated. Serious savings would be achieved by limitation of fossil fuel import and utilization of local resources. (EG)

  15. 2010 Renewable Energy Data Book

    Gelman, Rachel [National Renewable Energy Lab. (NREL), Golden, CO (United States)

    2011-10-01

    This Renewable Energy Data Book for 2010 provides facts and figures on energy in general, renewable electricity in the United States, global renewable energy development, wind power, solar energy, geothermal power, biopower, hydropower, advanced waterpower, hydrogen, renewable fuels, and clean energy investments.

  16. 2009 Renewable Energy Data Book

    Gelman, R.

    2010-08-01

    This Renewable Energy Data Book for 2009 provides facts and figures on energy in general, renewable electricity in the United States, global renewable energy development, wind power, solar energy, geothermal power, biopower, hydropower, advanced waterpower, hydrogen, renewable fuels, and clean energy investments.

  17. 2008 Renewable Energy Data Book

    2009-07-01

    This Renewable Energy Data Book for 2008 provides facts and figures on energy in general, renewable electricity in the United States, global renewable energy development, wind power, solar energy, geothermal power, biopower, hydropower, advanced water power, hydrogen, renewable fuels, and clean energy investments.

  18. 2011 Renewable Energy Data Book

    R. Gelman

    2013-02-01

    This Renewable Energy Data Book for 2011 provides facts and figures on energy in general, renewable electricity in the United States, global renewable energy development, wind power, solar energy, geothermal power, biopower, hydropower, advanced water power, hydrogen, renewable fuels, and clean energy investments.

  19. RENEWABLE ENERGY IN TOURISM

    MĂDĂLINA MIHĂILĂ

    2012-06-01

    Full Text Available Recent reports published by the International Energy Agency and U.S. Department of Energy, regarding the global energy outlook for the first three decades of the XXI century, warns of global trends on energy demand, increasing dependence on energy imports, coal use and volume emissions of greenhouse gases, torism industry being one of the biggest energy consumption industry. Uncertainties on different models of regional development and access of the world to traditional energy resources require a change of orientation towards long-term scenarios for assessing energy domain, increasing the share of energy from renewable resources beeing one of the solutions. Intourism the renewable energy is a solution for a positive impact on enviroment , reduced operational costs and even won an extra-profit.

  20. An overview of the EU Member States support schemes for the promotion of renewable energy sources

    Poullikkas, Andreas; Kourtis, George; Hadjipaschalis, Ioannis [Electricity Authority of Cyprus, P.O. Box 24506, 1399 Nicosia (Cyprus)

    2012-07-01

    In this work, an overview of the European Union (EU) Member States support schemes for the promotion of renewable energy sources (RES) is provided. In particular, the status of the electricity generation capacity as well as the RES mixture in the Member States is described. Moreover, the different support schemes such as, investment support, feed-in tariffs (FiTs), tradable green certificates, and fiscal and financial measures which the Member States have adopted for the promotion of RES technologies are discussed in detail. Some Member States are implementing a single support scheme for the promotion of RES for power generation (RES-E), e.g., seven Member States use FiTs, or implement a hybrid support scheme by combining all or some of the four categories of the RES-E supporting schemes. Although, these support schemes have increased the penetration of the RES-E technologies in the Member States, still there is a long way in order to achieve the 2020 target. The reason for this may be that the way these schemes have been used so far, i.e., either as single support schemes or in combination of FiTs or tradable green certificates with investment support and fiscal and financial measures, has been ineffective. A more effective combination could be a hybrid scheme consisting of FiTs with tradable green certificates measures, as in the case of Italy and United Kingdom, that will increase the RES-E penetration and eliminate the possible technical problems which will arise from this increased penetration and have an effect in the stability of the power system.

  1. Determination of biogas generation potential as a renewable energy source from supermarket wastes

    Alkanok, Gizem; Demirel, Burak, E-mail: burak.demirel@boun.edu.tr; Onay, Turgut T.

    2014-01-15

    Highlights: • Disposal of supermarket wastes in landfills may contribute to environmental pollution. • High methane yields can be obtained from supermarket wastes by anaerobic co-digestion. • Fruit and vegetable wastes or dairy products wastes could individually be handled by a two-stage anaerobic process. • Buffering capacity, trace metal and C/N ratio are essential for digestion of supermarket wastes. - Abstract: Fruit, vegetable, flower waste (FVFW), dairy products waste (DPW), meat waste (MW) and sugar waste (SW) obtained from a supermarket chain were anaerobically digested, in order to recover methane as a source of renewable energy. Batch mesophilic anaerobic reactors were run at total solids (TS) ratios of 5%, 8% and 10%. The highest methane yield of 0.44 L CH{sub 4}/g VS{sub added} was obtained from anaerobic digestion of wastes (FVFW + DPW + MW + SW) at 10% TS, with 66.4% of methane (CH{sub 4}) composition in biogas. Anaerobic digestion of mixed wastes at 5% and 8% TS provided slightly lower methane yields of 0.41 and 0.40 L CH{sub 4}/g VS{sub added}, respectively. When the wastes were digested alone without co-substrate addition, the highest methane yield of 0.40 L CH{sub 4}/g VS{sub added} was obtained from FVFW at 5% TS. Generally, although the volatile solids (VS) conversion percentages seemed low during the experiments, higher methane yields could be obtained from anaerobic digestion of supermarket wastes. A suitable carbon/nitrogen (C/N) ratio, proper adjustment of the buffering capacity and the addition of essential trace nutrients (such as Ni) could improve VS conversion and biogas production yields significantly.

  2. The alternative and renewable energy sources in Mexico; Fuentes alternativas y renovables de energia en Mexico

    Urbano C, J. Antonio [Instituto Politecnico Nacional, Mexico, D. F. (Mexico); Matsumoto K, Yasuhiro; Asomoza P, Rene [Centro de Investigacion y de Estudios Avanzados del Instituto Politecnico Nacional, Mexico, D. F. (Mexico)

    1996-12-31

    This paper presents an overview of the efforts that have been made in our Mexico in the area of Alternative and Renewable Sources of Energy, effort performed by different institutions, government agencies and private companies along the last 25 years. Older periods are not contemplated, although significant advances have existed, specifically in the area of small micro-hydraulic power plants, since the end of the past century and in solar collectors, more than 60 years ago, as the most relevant advances have been contemplated in these last two decades. The entire world energy demand is analyzed, making emphasis in our country, the efforts on the installed geothermal power plants, the flat collectors for domestic use, the solar power plants installed by some government agencies are also mentioned, as well as the strong growth in the photo-voltaic field at worldwide level as well as at domestic level (a graph is presented of the multiple applications of the photo-voltaic conversion of the solar energy at world level of which some of these are already operational in our country), including the hybrid systems (wind power photo-voltaic Diesel, the pilot biogas plants, the solar ponds efforts and the recently inaugurated wind-power plant of 1.575 MW installed at La Venta, in the Oaxaca State. [Espanol] El presente articulo, presenta una revision de los esfuerzos que se han desarrollado en nuestro Mexico, en el campo de las Fuentes Alternas y Renovables de Energia, esfuerzos realizados por diferentes instituciones, dependencias y companias a lo largo de los ultimos 25 anos. No se contemplan periodos mas antiguos, aunque han existido adelantos significativos, especificamente, en el campo de pequenas centrales microhidraulicas desde fines del siglo, y de colectores solares desde hace mas de 60 anos, ya que los mas relevantes se contemplan en estas ultimas dos decadas de recopilacion. Se analiza la demanda de energia mundial, haciendo enfasis a nuestro pais, se mencionan los

  3. 2014 Renewable Energy Data Book

    Beiter, Philipp

    2015-11-01

    The Renewable Energy Data Book for 2014 provides facts and figures on energy and electricity use, renewable electricity in the United States, global renewable energy development, wind power, solar power, geothermal power, biopower, hydropower, marine and hydrokinetic power, hydrogen, renewable fuels, and clean energy investment.

  4. 2015 Renewable Energy Data Book

    Beiter, Philipp [National Renewable Energy Lab. (NREL), Golden, CO (United States); Tian, Tian [National Renewable Energy Lab. (NREL), Golden, CO (United States)

    2016-11-01

    The Renewable Energy Data Book for 2015 provides facts and figures on energy and electricity use, renewable electricity in the United States, global renewable energy development, wind power, solar power, geothermal power, biopower, hydropower, marine and hydrokinetic power, hydrogen, renewable fuels, and clean energy investment.

  5. 2015 Renewable Energy Data Book

    Beiter, Philipp; Tian, Tian

    2016-11-01

    The 2015 Renewable Energy Data Book provides facts and figures on energy and electricity use, renewable electricity in the United States, global renewable energy development, wind power, solar power, geothermal power, biopower, hydropower, marine and hydrokinetic power, hydrogen, renewable fuels, and clean energy investment.

  6. 2014 Renewable Energy Data Book

    Beiter, Philipp [National Renewable Energy Lab. (NREL), Golden, CO (United States)

    2015-11-15

    The Renewable Energy Data Book for 2014 provides facts and figures on energy and electricity use, renewable electricity in the United States, global renewable energy development, wind power, solar power, geothermal power, biopower, hydropower, marine and hydrokinetic power, hydrogen, renewable fuels, and clean energy investment.

  7. Wind energy renewable energy and the environment

    Nelson, Vaughn

    2013-01-01

    As the demand for energy increases, and fossil fuels continue to decrease, Wind Energy: Renewable Energy and the Environment, Second Edition considers the viability of wind as an alternative renewable energy source. This book examines the wind industry from its start in the 1970s until now, and introduces all aspects of wind energy. The phenomenal growth of wind power for utilities is covered along with applications such as wind-diesel, village power, telecommunications, and street lighting.. It covers the characteristics of wind, such as shear, power potential, turbulence, wind resource, wind

  8. Learning about Renewable Energy.

    Conservation and Renewable Energy Inquiry and Referral Service (DOE), Silver Spring, MD.

    This booklet provides an introduction to renewable energy, discussing: (1) the production of electricity from sunlight; (2) wind power; (3) hydroelectric power; (4) geothermal energy; and (5) biomass. Also provided are nine questions to answer (based on the readings), four additional questions to answer (which require additional information), and…

  9. An iterative approach for symmetrical and asymmetrical Short-circuit calculations with converter-based connected renewable energy sources

    Göksu, Ömer; Teodorescu, Remus; Bak-Jensen, Birgitte;

    2012-01-01

    As more renewable energy sources, especially more wind turbines are installed in the power system, analysis of the power system with the renewable energy sources becomes more important. Short-circuit calculation is a well known fault analysis method which is widely used for early stage analysis...... and design purposes and tuning of the network protection equipments. However, due to current controlled power converter-based grid connection of the wind turbines, short-circuit calculation cannot be performed with its current form for networks with power converter-based wind turbines. In this paper......, an iterative approach for short-circuit calculation of networks with power converter-based wind turbines is developed for both symmetrical and asymmetrical short-circuit grid faults. As a contribution to existing solutions, negative sequence current injection from the wind turbines is also taken into account...

  10. EDITORIAL: Renewing energy technology Renewing energy technology

    Demming, Anna

    2011-06-01

    Renewable energy is now a mainstream concern among businesses and governments across the world, and could be considered a characteristic preoccupation of our time. It is interesting to note that many of the energy technologies currently being developed date back to very different eras, and even predate the industrial revolution. The fuel cell was first invented as long ago as 1838 by the Swiss--German chemist Christian Friedrich Schönbein [1], and the idea of harnessing solar power dates back to ancient Greece [2]. The enduring fascination with new means of harnessing energy is no doubt linked to man's innate delight in expending it, whether it be to satisfy the drive of curiosity, or from a hunger for entertainment, or to power automated labour-saving devices. But this must be galvanized by the sustained ability to improve device performance, unearthing original science, and asking new questions, for example regarding the durability of photovoltaic devices [3]. As in so many fields, advances in hydrogen storage technology for fuel cells have benefited significantly from nanotechnology. The idea is that the kinetics of hydrogen uptake and release may be reduced by decreasing the particle size. An understanding of how effective this may be has been hampered by limited knowledge of the way the thermodynamics are affected by atom or molecule cluster size. Detailed calculations of individual atoms in clusters are limited by computational resources as to the number of atoms that can studied, and other innovative approaches that deal with force fields derived by extrapolating the difference between the properties of clusters and bulk matter require labour-intensive modifications when extending such studies to new materials. In [4], researchers in the US use an alternative approach, considering the nanoparticle as having the same crystal structure as the bulk but relaxing the few layers of atoms near the surface. The favourable features of nanostructures for catalysis

  11. Renewable Energy Systems

    Lund, Henrik

    2014-01-01

    are to be found when the electricity sector is combined with the heating and cooling sectors and/or the transportation sector. Moreover, the combination of electricity and gas infrastructures may play an important role in the design of future renewable energy systems. The paper illustrates why electricity smart......This paper presents the learning of a series of studies that analyse the problems and perspectives of converting the present energy system into a 100 % renewable energy system using a smart energy systems approach. As opposed to, for instance, the smart grid concept, which takes a sole focus...... on the electricity sector, smart energy systems include the entire energy system in its approach to identifying suitable energy infrastructure designs and operation strategies. The typical smart grid sole focus on the electricity sector often leads to the conclusion that transmission lines, flexible electricity...

  12. Photon Science for Renewable Energy

    Hussain, Zahid; Tamura, Lori; Padmore, Howard; Schoenlein, Bob; Bailey, Sue

    2010-03-31

    Our current fossil-fuel-based system is causing potentially catastrophic changes to our planet. The quest for renewable, nonpolluting sources of energy requires us to understand, predict, and ultimately control matter and energy at the electronic, atomic, and molecular levels. Light-source facilities - the synchrotrons of today and the next-generation light sources of tomorrow - are the scientific tools of choice for exploring the electronic and atomic structure of matter. As such, these photon-science facilities are uniquely positioned to jump-start a global revolution in renewable and carbonneutral energy technologies. In these pages, we outline and illustrate through examples from our nation's light sources possible scientific directions for addressing these profound yet urgent challenges.

  13. From Goals to Action: The Efforts for Increasing Energy Efficiency and Integration of Renewable Sources in Eskilstuna, Sweden

    Iana Vassileva

    2015-07-01

    Full Text Available Cities’ energy usage accounts for two thirds of global primary energy consumption. Energy efficiency in urban areas is, therefore, one of the most important topics to consider when dealing with urban sustainability. This paper evaluates the goals for increasing energy efficiency and use of renewable energy sources in the areas of transportation, buildings and consumers’ awareness, as stated in the Climate action plan, for the municipality of Eskilstuna, Sweden. The efforts of the municipality to successfully reach their energy efficiency goals, are described in this paper including future perspectives. The results show that although the municipality counts with the advantage of owning and working together with the local housing company and energy provider, in order to reach the established goals, additional strategies need to be considered. For an increased use of renewable energy sources, analysis of rooftops suitable for photovoltaic (PV installation should be carried out as well as the integration of goals for self-consumption. In the transport field, the city needs to prepare for large-scale electric vehicle (EV market penetration and to consider different bike or car sharing options. Finally, more specific awareness campaigns are needed to engage the citizens in reducing their energy consumption and living a more sustainable life.

  14. Introduction to renewable energy

    Nelson, Vaughn C

    2011-01-01

    IntroductionEnergy and SocietyTypes of EnergyRenewable EnergyAdvantages/DisadvantagesEconomicsGlobal WarmingOrder of Magnitude EstimatesGrowth (Exponential)SolutionsEnergyIntroductionDefinition of Energy and PowerHeatThermodynamicsEnergy Dilemma in Light of the Laws of ThermodynamicsUse of Fossil FuelsNuclearFinite ResourceSummarySunSolar PowerElectromagnetic SpectrumEnergy Balance of the EarthEarth-Sun MotionInsolationSolar ResourceGreenhouse EffectHeat Transfer and StorageIntroductionConductionConvectionRadiationThermal MassSeasonal Heating or CoolingThermal ComfortSolar Heating and CoolingB

  15. Heliodromus: Renewable energy from space

    Kuiper, J.M.

    2010-01-01

    Climate change and the related running out of fossil fuel reserves drive the development of renewable energy sources. To contribute to a solution of these problems, we present the results of a BSc student design synthesis exercise project on Space Based Solar Power (SBSP). A SBSP system generates po

  16. Osmotic power. A great energy source for renewable energy; Una gran fuente de energia renovable para electricidad. Potencia osmotica

    Alonso Alvarez, J.

    2009-07-01

    When freshwater meets saltwater, for example, where a river flows out into the sea, enormous quantities of energy can be utilised to generate power, through the natural phenomenon of osmosis. Osmotic power is based on the natural phenomenon of osmosis, defined as the transport of water through a semi-permeable membranes, enclosing their cells, and tho produce osmotic power one has to design similar, artificial membranes. In an osmotic power plant we feed freshwater into separate chambers, separated by an artificial membranes. The salt molecules in the seawater then draw the freshwater through the membranes, causing the pressure on the seawater side to increase. This pressure corresponds to a water column of 120 meters or a large waterfall, and can be utilised in a turbine which generated electricity. The idea to generate power through osmosis is originates from the 1970s. At the time, however, the membranes had low efficiency and power price were too low to enable anyone to profitable invest in such a project. many years later, research scientists al SINTEF brought the idea to STAT kraft. The collaboration was initiated in 1997, and the development of a new, renewable energy source was initiated. (Author)

  17. Creating prospective value chains for renewable road transport energy sources up to 2050 in Nordic Countries

    Wessberg, Nina; Leinonen, Anna; Tuominen, Anu

    2013-01-01

    alternative, but partly overlapping technology platforms, namely electricity, biofuels and hydrogen. The approach outlined in the paper combines elements from the fields of system level changes (transitions), value chain analysis and forward looking policy design. It presents a novel, policy relevant...... cooperation between public and private actors. This paper discusses the paradigm change towards 2050 Nordic road transport system based on renewable energy. More precisely, it proposes an approach for creation and analysis of prospective value networks up to the year 2050. The value networks arise from three...

  18. Use of the Drawing-Writing Technique to Determine the Level of Knowledge of Pre-Service Teachers Regarding Renewable Energy Sources

    Kara, Filiz

    2015-01-01

    The aim of this study was to determine the level of knowledge of pre-service science teachers in Turkey regarding the different types of renewable energy sources, the methods used for obtaining energy from these sources, and the areas of use for these energy sources. Within the context of the study, the drawing-writing technique was used in order…

  19. Renewable Energy Country Profiles. Caribbean

    NONE

    2012-09-15

    IRENA Renewable Energy Country Profiles take stock of the latest developments in the field of renewables at country level around the world. Each profile combines analysis by IRENA's specialists with the latest available country data and additional information from a wide array of sources. The resulting reports provide a brief yet comprehensive picture of the situation with regard to renewable energy, including energy supply, electrical generation and grid capacity, and access. Energy policies, targets and projects are also considered, along with each country's investment climate and endowment with renewable energy resources. The energy statistics presented here span the period from 2009 until 2012, reflecting varying timelines in the source material. Since data availability differs from country to country, wider regional comparisons are possible only for the latest year with figures available for every country included. Despite the time lag in some cases, the evident differences and disparities between countries and regions around the world remain striking. The current package of country profiles is just a starting point. The geographic scope will continue to expand, and existing profiles will be enhanced with new indicators, with the whole series maintained as a live product on the IRENA website (www.irena.org)

  20. RENEWABLE ENERGY BETWEEN AGRICULTURE AND INDUSTRY

    Diana GROSU

    2013-01-01

    Full Text Available The paper aims to present the evolution of renewable energy in the entire world, including Moldova and Romania as states that tend to reach their micro- and macro-economic objectives. One of the most important goal remains thedevelopment of renewable energy from agricultural waste and so the energy coming from natural sources such assolar, wind or water without air pollution. As a conclusion, the solution to obtain this renewable energy is to attractfinancial resources from EU or USA investors.

  1. Renewable Energy Essentials: Hydropower

    NONE

    2010-07-01

    Hydropower is currently the most common form of renewable energy and plays an important part in global power generation. Worldwide hydropower produced 3 288 TWh, just over 16% of global electricity production in 2008, and the overall technical potential for hydropower is estimated to be more than 16 400 TWh/yr.

  2. Renewable Energy for Microenterprise

    Allderdice, A.; Rogers, J.H.

    2000-11-28

    This guide provides readers with a broad understanding of the potential benefits that current renewable energy technologies can offer rural microenterprises. It also introduces the institutional approaches that have been developed to make RE technologies accessible to microentrepreneurs and the challenges that these entrepreneurs have encountered.

  3. Regional Renewable Energy Cooperatives

    Hazendonk, P.; Brown, M. B.; Byrne, J. M.; Harrison, T.; Mueller, R.; Peacock, K.; Usher, J.; Yalamova, R.; Kroebel, R.; Larsen, J.; McNaughton, R.

    2014-12-01

    We are building a multidisciplinary research program linking researchers in agriculture, business, earth science, engineering, humanities and social science. Our goal is to match renewable energy supply and reformed energy demands. The program will be focused on (i) understanding and modifying energy demand, (ii) design and implementation of diverse renewable energy networks. Geomatics technology will be used to map existing energy and waste flows on a neighbourhood, municipal, and regional level. Optimal sites and combinations of sites for solar and wind electrical generation (ridges, rooftops, valley walls) will be identified. Geomatics based site and grid analyses will identify best locations for energy production based on efficient production and connectivity to regional grids and transportation. Design of networks for utilization of waste streams of heat, water, animal and human waste for energy production will be investigated. Agriculture, cities and industry produce many waste streams that are not well utilized. Therefore, establishing a renewable energy resource mapping and planning program for electrical generation, waste heat and energy recovery, biomass collection, and biochar, biodiesel and syngas production is critical to regional energy optimization. Electrical storage and demand management are two priorities that will be investigated. Regional scale cooperatives may use electric vehicle batteries and innovations such as pump storage and concentrated solar molten salt heat storage for steam turbine electrical generation. Energy demand management is poorly explored in Canada and elsewhere - our homes and businesses operate on an unrestricted demand. Simple monitoring and energy demand-ranking software can easily reduce peaks demands and move lower ranked uses to non-peak periods, thereby reducing the grid size needed to meet peak demands. Peak demand strains the current energy grid capacity and often requires demand balancing projects and

  4. Adaptive Neuro-Fuzzy Inference Systems as a Strategy for Predicting and Controling the Energy Produced from Renewable Sources

    Otilia Elena Dragomir

    2015-11-01

    Full Text Available The challenge for our paper consists in controlling the performance of the future state of a microgrid with energy produced from renewable energy sources. The added value of this proposal consists in identifying the most used criteria, related to each modeling step, able to lead us to an optimal neural network forecasting tool. In order to underline the effects of users’ decision making on the forecasting performance, in the second part of the article, two Adaptive Neuro-Fuzzy Inference System (ANFIS models are tested and evaluated. Several scenarios are built by changing: the prediction time horizon (Scenario 1 and the shape of membership functions (Scenario 2.

  5. Renewable Energy Opportunities at Fort Hood, Texas

    Chvala, William D.; Warwick, William M.; Dixon, Douglas R.; Solana, Amy E.; Weimar, Mark R.; States, Jennifer C.; Reilly, Raymond W.

    2008-06-30

    The document provides an overview of renewable resource potential at Fort Hood based primarily upon analysis of secondary data sources supplemented with limited on-site evaluations. The effort was funded by the U.S. Army Installation Management Command (IMCOM) as follow-on to the 2005 DoD Renewables Assessment. This effort focuses on grid-connected generation of electricity from renewable energy sources and also ground source heat pumps for heating and cooling buildings, as directed by IMCOM.

  6. The potential of renewable energy

    1990-03-01

    On June 27 and 28, 1989, the US Department of Energy (DOE) national laboratories were convened to discuss plans for the development of a National Energy Strategy (NES) and, in particular, the analytic needs in support of NES that could be addressed by the laboratories. As a result of that meeting, interlaboratory teams were formed to produce analytic white papers on key topics, and a lead laboratory was designated for each core laboratory team. The broad-ranging renewables assignment is summarized by the following issue statement from the Office of Policy, Planning and Analysis: to what extent can renewable energy technologies contribute to diversifying sources of energy supply What are the major barriers to greater renewable energy use and what is the potential timing of widespread commercialization for various categories of applications This report presents the results of the intensive activity initiated by the June 1989 meeting to produce a white paper on renewable energy. Scores of scientists, analysts, and engineers in the five core laboratories gave generously of their time over the past eight months to produce this document. Their generous, constructive efforts are hereby gratefully acknowledged. 126 refs., 44 figs., 32 tabs.

  7. Distributed MPC for Efficient Coordination of Storage and Renewable Energy Sources Across Control Areas

    Baker, Kyri; Guo, Junyao; Hug, Gabriela; Li, Xin

    2016-03-01

    In electric power systems, multiple entities are responsible for ensuring an economic and reliable way of delivering power from producers to consumers. With the increase of variable renewable generation it is becoming increasingly important to take advantage of the individual entities' (and their areas') capabilities for balancing variability. Hence, in this paper, we employ and extend the approximate Newton directions method to optimally coordinate control areas leveraging storage available in one area to balance variable resources in another area with only minimal information exchange among the areas. The problem to be decomposed is a model predictive control problem including generation constraints, energy storage constraints, and AC power flow constraints. Singularity issues encountered when formulating the respective Newton-Raphson steps due to intertemporal constraints are addressed and extensions to the original decomposition method are proposed to improve the convergence rate and required communication of the method.

  8. Renewable Energy Development in India

    Gupta, K.M.

    2007-07-01

    India has done a significant progress in the power generation in the country. The installed generation capacity was 1300 megawatt (MW) at the time of Independence i.e. about 60 years back. The total generating capacity anticipated at the end of the Tenth Plan on 31-03-2007, is 1, 44,520 MW which includes the generation through various sectors like Hydro, Thermal and Nuclear. Emphasis is given to the renewable energy programme towards gradual commercialization. This programme is looked after by the Ministry of Non-Conventional Sources of energy. Since the availability of fossil fuel is on the decline therefore, in this backdrop the norms for conventional or renewable sources of energy (RSE) is given importance not only in India but has attracted the global attention. The main items under RSE are as follows: (i) Hydro Power (ii) Solar Power (iii) Wind Power (iv) Bio-mass Power (v) Energy from waste (vi) Ocean energy, and (vii) Alternative fuel for surface transportation. Evolution of power transformer technology in the country during the past five decades is quite impressive. There are manufacturers in the country with full access to the latest technology at the global level. Some of the manufacturers have impressive R&D set up to support the technology. Renewable energy is very much promoted by the Chinese Government. At the same time as the law was passed, the Chinese Government set a target for renewable energy to contribute 10% of the country's gross energy consumption by 2020, a huge increase from the current 1%. It has been felt that there is rising demand for energy, food and raw materials by a population of 2.5 billion Chinese and Indians. Both these countries have large coal dominated energy systems in the world and the use of fossil fuels such as coal and oil releases carbon dioxide (CO2) into the air which adds to the greenhouse gases which lead to global warming. (auth)

  9. Analysis Of The Profitability of Investment In Renewable Energy Sources On The Example of A Semi-Detached House

    Radziszewska-Zielina Elżbieta

    2016-01-01

    Full Text Available The paper presents an analysis of the profitability of investment in a selection of systems based on renewable energy sources on the example of a semi-detached house with a floor area of nearly 150 m2. The analysis was conducted in three variants:1 the application of a biomass boiler, solar collectors and photovoltaic panels; 2 a heat pump, solar collectors and photovoltaic panels; 3 a heat pump, solar collectors and a wind turbine. Next, the proposed solutions were compared with a traditional heating system featuring a gas-powered boiler and obtaining electricity through the power distribution grid. The investment and operational costs were calculated after the selection of the appropriate equipment. The example under analysis indicates that variant 3 entailed the highest investment costs (the purchase and fitting of a heat pump as well as the drilling required to install underground pumps. Traditional technical solutions were proven to produce the highest costs. The investment profitability analysis was conducted using both the simple and discounted methods of evaluating profitability. It was established that variant 3 yielded the shortest discounted payback period - less than 13 years. It is estimated that the investment will reach the break-even point after this time. As a summary, it must be noted that the profitability of a given investment depends on the adopted technical solutions. Due to high initials costs, investors often lack interest in the purchase and installation of renewable energy generation systems; however, the contribution of the investors can be lowered with the use of subsidies and price reductions regarding the installation of renewable energy generation systems. We can observe a decrease in the price of the most popular and efficient renewable energy systems.

  10. Development of Innovative Heating and Cooling Systems Using Renewable Energy Sources for Non-Residential Buildings

    Cinzia Buratti

    2013-10-01

    Full Text Available Industrial and commercial areas are synonymous with high energy consumption, both for heating/cooling and electric power requirements, which are in general associated to a massive use of fossil fuels producing consequent greenhouse gas emissions. Two pilot systems, co-funded by the Italian Ministry for the Environment, have been created to upgrade the heating/cooling systems of two existing buildings on the largest industrial estate in Umbria, Italy. The upgrade was specifically designed to improve the system efficiency and to cover the overall energy which needs with renewable energy resources. In both cases a solar photovoltaic plant provides the required electric power. The first system features a geothermal heat pump with an innovative layout: a heat-storage water tank, buried just below ground level, allows a significant reduction of the geothermal unit size, hence requiring fewer and/or shorter boreholes (up to 60%–70%. In the other system a biomass boiler is coupled with an absorption chiller machine, controlling the indoor air temperature in both summer and winter. In this case, lower electricity consumption, if compared to an electric compression chiller, is obtained. The first results of the monitoring of summer cooling are presented and an evaluation of the performance of the two pilot systems is given.

  11. Renewable energy development in China

    Junfeng, Li

    1996-12-31

    This paper presents the resources availability, technologies development and their costs of renewable energies in China and introduces the programs of renewable energies technologies development and their adaptation for rural economic development in China. As the conclusion of this paper, renewable energies technologies are suitable for some rural areas, especially in the remote areas for both household energy and business activities energy demand. The paper looks at issues involving hydropower, wind energy, biomass combustion, geothermal energy, and solar energy.

  12. Unified System-Level Modeling of Intermittent Renewable Energy Sources and Energy Storage for Power System Operation

    Heussen, Kai; Koch, Stephan; Ulbig, Andreas

    2011-01-01

    in market-based operation. The design of operation strategies for up to 100 % renewable energy systems requires an explicit consideration of non-dispatchable generation and stor- age capacities, as well as the evaluation of operational performance in terms of energy eciency, reliability, environmental...... impact and cost. By abstracting from technology-dependent and physical unit properties, the modeling framework presented and extended in this pa- per allows the modeling of a technologically diverse unit portfolio with a unied approach, whilst establishing the feasibility of energy-storage consideration...

  13. Evaluation of the wind conditions for the acquisition of energy from renewable sources on the base of Sosnowiec city

    Sarapata, Sonia

    2013-09-01

    Inherent in the continuous development of civilization is a constant increase in demand for electricity. The result of this situation could be a threat to cover domestic demand for electricity generated from domestic sources. It is significant therefore, to increase the energy security of the country, as well as to generate a positive impact on the development and dynamics of social and economic processes which is carried by the development of renewable energy sources. A crucial argument for the need to implement new sustainable solutions is growing environmental degradation and pollution resulting from the acquisition and use of non-renewable energy resources. Renewable energy resource for interest of this analysis is the wind. A crucial feature of the wind is its high volatility. Wind speed is characterized by diurnal, seasonal and long-term variation. The study area is Sosnowiec city. The analysis covers the data from the period 2002 - 2011 obtained using a meteorological station located in the Department of Earth Sciences, University of Silesia in Sosnowiec. Analyzed data are observations of wind speed measured at the height of 10m above the ground - average values of 10 minutes. The mean and maximum daily, monthly and annual values of wind speed have been calculated, and on their basis, a relevant analysis have been made. Average wind speed value for the analyzed area of the analyzed period (2002 - 2011) is 1,70m/s, while the maximum wind speed value is 3,78m/s. Sosnowiec is located in zone IV - unfavorable for the use of wind energy.

  14. Renewable Energy: Policy Considerations for Deploying Renewables

    NONE

    2011-07-01

    This information paper accompanies the IEA publication Deploying Renewables 2011: Best and Future Policy Practice (IEA, 2011a). It provides more detailed data and analysis on policies for Deploying Renewables, and is intended to complement the main publication. It provides an account of the strategic drivers underpinning renewable energy (RE) technology deployment (energy security, economic development and environment protection) and assesses RE technologies with respect to these drivers, including an estimate of GHG emissions reductions due to RE technologies. The paper also explores the different barriers to deploying renewables at a given stage of market maturity and discusses what tools policy makers can avail of to succeed in removing deployment barriers. An additional topical highlight explores the challenges associated with accelerating the diffusion of RE technologies in developing countries.

  15. Electricity production from renewables energies

    Robyns, Benoit; François, Bruno; Henneton, Antoine; Sprooten, Jonathan

    2012-01-01

    Energy and environmental issues have caused a marked increase in electricity production from renewable energy sources since the beginning of the 21st Century. The concept of sustainable development and concern for future generations challenge us every day to produce new technologies for energy production, and new patterns of use for these energies. Their rapid emergence can make the understanding and therefore the perception of these new technologies difficult. This book aims to contribute to a better understanding of the new electricity generation technologies by addressing a diverse audie

  16. Use of Hydrogen from Renewable Energy Source for Powering Hot-Mix Asphalt Plant

    Kasthurirangan Gopalakrishnan

    2012-03-01

    Full Text Available A significant portion of paved roads and highways are surfaced with Hot-Mix Asphalt. Environmental Life-Cycle Assessment studies have shown that, in the production of Hot-Mix Asphalt pavements, major consumption of energy takes place during asphalt mixing and drying of aggregates, more than what is consumed during the extraction of crude oil and the distillation of bitumen. Currently, natural gas is the primarily source of fossil fuel used to produce 70 to 90 percent of the Hot-Mix Asphalt in the USA, while the remainder of the Hot-Mix Asphalt is produced using oil, propane, waste oil, or other fuels. Energy-related CO2 emissions resulting from the use of fossil fuels in various industry and transportation sectors represent a significant portion of human-made greenhouse gas emissions. This study investigates the technical feasibility of using a hybrid wind energy system as a clean source of energy for operating an entire Hot-Mix Asphalt production facility. Since wind blows intermittently, the extracted wind energy will be stored in the form of hydrogen which is considered a lightweight, compact energy carrier, for later use, thus creating a ready source of electricity for the Hot-Mix Asphalt plant when wind is not present or when electricity demand is high.

  17. Renewable energy project development

    Ohi, J.

    1996-12-31

    The author presents this paper with three main thrusts. The first is to discuss the implementation of renewable energy options in China, the second is to identify the key project development steps necessary to implement such programs, and finally is to develop recommendations in the form of key issues which must be addressed in developing such a program, and key technical assistance needs which must be addressed to make such a program practical.

  18. Renew Europe - Technological developments in renewable energy. Proceedings

    NONE

    2007-07-01

    This event is a symposium for international stakeholders in the field of renewable energy. An accompanying fair addresses the public in the Northern German regions. Especially SMEs interested in meeting their energy demands with renewable energy sources are invited. The main focus of the symposium will be technological aspects of renewable energy production, with a special emphasis to the political and economic framework conditions for renewable energies in North Sea countries and in Central and Eastern Europe. We will introduce and showcase the latest technology trends and research. The symposium aims to stimulate further innovation in the efficient production of energy, especially polygeneration technologies (combined electricity and heat production) for small and decentralised use in companies, schools and housing estates. Best practice examples will be shown and solutions shall be worked out by manufacturers, researchers and policy makers. Only power point presentations available.

  19. Design of Power Converters for Renewable Energy Sources and Electric Vehicles Charging

    Martin Tvrdon

    2013-01-01

    Full Text Available This paper describes the design and construction of new series of power converters equipped with liquid cooling system. This power series is created for project ENET – Energy Units for Utilization of non Traditional Energy Sources. First power converter is determined for stationary battery system use, the second one is used as an inverter/rectifier for a small solar plant system and the last power inverter is used as a fast charger for electric vehicles. Energy balance is performed for the fast charger converter, which is solved using numerical simulations of the system.

  20. Renewable energy and wildlife conservation

    Khalil, Mona

    2016-09-09

    The renewable energy sector is rapidly expanding and diversifying the power supply of the country. Yet, as our Nation works to advance renewable energy and to conserve wildlife, some conflicts arise. To address these challenges, the U.S. Geological Survey (USGS) is conducting innovative research and developing workable solutions to reduce impacts of renewable energy production on wildlife.

  1. Small Hydro Power-An Important Renewable Energy Sources for Rural Electrification in Nigeria

    MamudaAbdullahi

    2005-01-01

    This paper is trying to highlight the importance of constructing small hydropower station as the alternative source of energy for rural electrification in Nigeria and stressedthe need for the Federal Government of Nigeria to provide a clear open policy that will make environment favourable and safe for local and foreign private investors on small Hydropower.

  2. The potential of global solar radiation in the Silesia region as a renewable source of energy

    Waniek Katarzyna

    2016-12-01

    Full Text Available Historically, Silesia has been at the centre of the Polish coal industry for many years and thus has experienced poorer air quality compared to other voivodeships. However, in recent years strong economic transformation in the area has led to a considerable reduction in coal production. This study aimed to assess the variability of global solar radiation at selected stations within the Silesian voivodeship, in order to re-evaluate the resources of renewable solar energy during the period 1994–2013. The theoretical potential of solar radiation was calculated based on a three-dimensional terrain model. The data on global solar radiation from 13 stations within the Silesia region, covering the period 1994–2013, were obtained from the Regional Inspectorate of Environmental Protection in Katowice. The most favourable conditions for the use of solar energy were found at the cities Sosnowiec and Cieszyn. The largest increase in global radiation over the research period was observed in Zabrze. The average annual global radiation ranged between 600–1300 kWh·m−2. Digital Elevation Models (DEM for selected districts of the Silesia region were used to calculate the theoretical potential of global solar radiation. The highest theoretical potential of global radiation was found in the district of Cieszyn, located at the highest altitude.

  3. Contribution of Renewable Energy Sources to the Sustainable Development of Islands: An Overview of the Literature and a Research Agenda

    Loraima Jaramillo-Nieves

    2010-03-01

    Full Text Available Renewable energy sources (RES have significant potential to contribute to the economic, social and environmental energy sustainability of small islands. They improve access to energy for most of the population, they also reduce emissions of local and global pollutants and they may create local socioeconomic development opportunities. The aim of this paper is to provide a review of the theoretical and empirical literature on the contribution of RES to the energy sustainability of islands, focusing on the main results and the methodologies used. Papers are classified according to their coverage of the three dimensions of the triangular approach to sustainability (economic, environmental and social. The review also takes into account whether and how the procedural sustainability has been tackled in those papers. It is acknowledged that although several topics have been covered by the existing literature, there are promising avenues for future research on several fronts, both thematic and methodological.

  4. An adaptive Phase-Locked Loop algorithm for faster fault ride through performance of interconnected renewable energy sources

    Hadjidemetriou, Lenos; Kyriakides, Elias; Blaabjerg, Frede

    2013-01-01

    of the phase-locked loop algorithm. The adaptive parameters are adjusted in real time according to the proposed fault classification unit, which permits a fast estimation of the type of the grid fault. The outstanding performance of the proposed adaptive PLL is verified through simulation and experimental......Interconnected renewable energy sources require fast and accurate fault ride through operation in order to support the power grid when faults occur. This paper proposes an adaptive Phase-Locked Loop (adaptive dαβPLL) algorithm, which can be used for a faster and more accurate response of the grid...

  5. The Evaluation and Testing of Various Bladeless Wind Turbine Designs for use as an alternative renewable energy source

    Agnew, Ian; Ray, Taylor

    2014-03-01

    Over the last two decades wind turbines have proven themselves globally as a reliable, renewable, and clean energy source. Even though wind turbines are simpler in design and do not pollute during operation as compared to conventional energy sources, many improvements can still be made. The design of a bladeless wind turbine offers potential improvements such as cost savings, reduction of operating noise level, simplification of the manufacturing process, reduction of maintenance costs, and incorporation of eco-friendly features. In order to analyze various turbine designs, a wind tunnel with a 30.3 cm x 29.1 cm test section was constructed at Georgia College. Several different wing sections are being evaluated in order to determine the turbine design and engineered for optimal aerodynamic efficiency over a Range of Reynolds numbers. Other factors like Pressure coefficients and overall drag profile of the designs will also be analyzed as well.

  6. Power generation from renewable energy sources. Climate-friendly and economically efficient. Background information; Stromerzeugung aus erneuerbaren Energien. Klimafreundlich und oekonomisch sinnvoll. Hintergrund

    NONE

    2011-02-15

    As the publication shows, the public discussion in Germany is increasingly focusing on the cost of the promotion of renewable energy sources. Critical comments state that the EEG (Renewables Act) accounts for most of the recent electricity rate increases and also does not contribute to climate protection. This background paper of the Federal Environmental Office stresses the role of the EEC for climate protection and its effects on price trends in electricity supply. The resulting financial burden for the German citizens and industry is investigated, and it is discussed whether public funding of renewable energy sources is indeed beneficial for the German economy on the whole.

  7. Integrating renewable energy sources in the Portuguese power system. New generation adequacy indicators

    Martins, Nuno; Santos, Joana; Damas, Manuela [Redes Energeticas Nacionais (REN), Porto (Portugal). Studies and Innovation Dept.

    2012-07-01

    The penetration of intermittent energy sources in the Portuguese power system is growing significantly. The identification of possible solutions to maintain the operational reserve levels is necessary to preserve flexibility and security of electricity supply. In this context, the development of probabilistic tools is essential to calculate new generation adequacy indicators associated with the analysis of the operational reserve. In this paper, the mathematical model RESERVAS, is briefly described and is used to analyse the impact of integrating high levels of intermittent energy sources in the Portuguese power system. The presented results allow us to conclude that the electricity adequacy evaluation should be done using probabilistic indicators, which reflect the power system performance in the following areas: (i) Adequacy (evaluation of the available power to face the hourly electricity demand) and (ii) Security (evaluation of the operational reserve requirements through the deviations in the demand-supply balance that occur among all elementary periods). (orig.)

  8. Modularized multilevel and z-source power converter as renewable energy interface for vehicle and grid-connected applications

    Cao, Dong

    Due the energy crisis and increased oil price, renewable energy sources such as photovoltaic panel, wind turbine, or thermoelectric generation module, are used more and more widely for vehicle and grid-connected applications. However, the output of these renewable energy sources varies according to different solar radiation, wind speed, or temperature difference, a power converter interface is required for the vehicle or grid-connected applications. Thermoelectric generation (TEG) module as a renewable energy source for automotive industry is becoming very popular recently. Because of the inherent characteristics of TEG modules, a low input voltage, high input current and high voltage gain dc-dc converters are needed for the automotive load. Traditional high voltage gain dc-dc converters are not suitable for automotive application in terms of size and high temperature operation. Switched-capacitor dc-dc converters have to be used for this application. However, high voltage spike and EMI problems exist in traditional switched-capacitor dc-dc converters. Huge capacitor banks have to be utilized to reduce the voltage ripple and achieve high efficiency. A series of zero current switching (ZCS) or zero voltage switching switched-capacitor dc-dc converters have been proposed to overcome the aforementioned problems of the traditional switched-capacitor dc-dc converters. By using the proposed soft-switching strategy, high voltage spike is reduced, high EMI noise is restricted, and the huge capacitor bank is eliminated. High efficiency, high power density and high temperature switched-capacitor dc-dc converters could be made for the TEG interface in vehicle applications. Several prototypes have been made to validate the proposed circuit and confirm the circuit operation. In order to apply PV panel for grid-connected application, a low cost dc-ac inverter interface is required. From the use of transformer and safety concern, two different solutions can be implemented, non

  9. Resources of Renewable Energy in India

    Surmadhur Pant

    2016-08-01

    Full Text Available Renewable energy resources sector growth in India has been significant, even for electricity generation from renewable sources. Renewable energy is energy generated from natural resources such as sunlight, wind, rain, tides, and geothermal heat, which are renewable (naturally replenished. Even for the decentralized systems, the growth for solar home lighting systems has been 300%, solar lanterns 99% and solar photovoltaic water pumps 196%. This is a phenomenal growth in the renewable energy sector mainly for applications that were considered to be supplied only through major electricity utilities. Some large projects have been proposed, and a 35,000 km2 area of the Thar Desert has been set aside for solar power projects, sufficient to generate 700 to 2,100 giga watts. Renewable energy systems are also being looked upon as a major application for electrification of 20,000 remote and unelectrified villages and hamlets by 2007 and all households in such villages and hamlets by 2018.

  10. Climate change mitigation: the potential of agriculture as a renewable energy source in Nigeria.

    Elum, Z A; Modise, D M; Nhamo, G

    2017-02-01

    Energy is pivotal to the economic development of every nation. However, its production and utilization leads to undesirable carbon emissions that aggravate global warming which results in climate change. The agriculture sector is a significant user of energy. However, it has the potential to be a major contributor to Nigeria's energy supply mix in meeting its energy deficit. More so, in the light of current and impending adverse effects of climate change, there is a need to contain GHG's emissions. This paper focuses on bioenergy utilization as a climate change mitigation strategy and one that can, through effective waste management, enhance sustainable economic development in Nigeria. The paper employed a critical discourse analysis to examine the potential of the agricultural sector to provide biofuels from energy crops and other biomass sources. We conclude that Nigeria can reduce its GHG emissions and greatly contribute to global climate change mitigation while also alleviating its energy supply deficit if the agricultural and municipal wastes readily available in its towns and cities are converted to bioenergy. Such engagements will not only promote a clean and healthy environment but also create jobs for economic empowerment and a better standard of living for the people.

  11. Renewable energies in Baden-Wuerttemberg 2011; Erneuerbare Energien in Baden-Wuerttemberg 2011

    NONE

    2012-11-15

    Within the contribution under consideration the Ministry of Environment, Climate Protection and Service Sector (Stuttgart, Federal Republic of Germany) reports on the following aspects: (1) Development of the energy consumption; (2) Contribution of the renewable energy sources to the energy supply; (3) Development of the amounts of renewable energy sources in the energy supply; (4) Structure of final energy supply from renewable energies; (5) Economic considerations on the utilization of renewable energy sources; (6) CO{sub 2} emissions and CO{sub 2} avoidance by means of renewable energy sources; (7) Utilization of renewable energy sources in Germany and Europe; (8) Remuneration for power from renewable energy sources according to the Renewable Energy Law and evaluation of the costs; (9) Utilization of renewable energy sources by Federal States; (10) Utilization of renewable energy sources by counties; (11) Potentials of renewable energy sources; (12) Employment effects in Baden-Wuertemberg; (13) Promotion of renewable energy sources.

  12. 7. Kassel symposium on energy systems technology: Renewable energy sources and efficient utilization of energy; 7. Kasseler Symposium Energie-Systemtechnik: Erneuerbare Energien und rationelle Energieverwendung

    Caselitz, P. (comp.)

    2002-07-01

    This proceedings volume comprises 17 papers on the following subjects: Methane hydrates, compounds of gas and water; Compressed air stroage gas turbine power plants / Scheduled application for load levelling between varying wind power production and power demand; Modern pumped storage power stations in the GW range - the PSW Goldisthal example; Lead batteries - new developments and future applications; Alkaline battery systems for hybrid electric road vehicles; Lighium systems and their applications; Zinc/air cells; Hydrogen storage - metal hydride storage, compressed gas storage, LNG storage; Carbon nanofibres for hydrogen storage; Double-layer condensers - technology, cost, perslpectives; Supercondensers in motor vehicles; Superconducting magnetic energy stores; Flywheel storage - status report; Decentralized energy storage in the European integrated supply grid - the EU project DISPOWER; Intercontinental integration of power supply - perspectives of full-scale power supply on the basis of renewable energy sources in Europe; High-volgate direct-current transmission in the European power suppply grid; Superconductivity and energy transport - status and perspectives. [German] Dieser Tagungsband enthaelt 17 Vortraege mit folgenden Themen: Methanhydrate: Verbindung aus Gas und Wasser (Erwin Suess); Druckluftspeicher-Gasturbinen-Kraftwerke / Geplanter Einsatz beim Ausgleich flukturierender Windenergie-Produktion und aktuellem Strombedarf (Fritz Crotogino); Moderne Pumpspeicherwerke im Gigawattbereich - PSW Goldisthal (Wolfgang Bogenrieder); Bleibatterien - neue Entwicklungen und zukuenftige Einsatzbereiche (Reiner Wagner); Alkalische Batteriesysteme fuer Hybrid-Elektrostrassenfahrzeuge (Detlef Ohms, Gunter Schaedlich); Lithiumsysteme - Einsatzbereiche (Dietmar Rahner); Zink/Luft-Zellen (Michael Bruesewitz); Wasserstoffspeicher - Metallhydridspeicher, Druckgasspeicher, Fluessiggasspeicher (Andreas Otto); Kohlenstoff-Nanofasern zur Wasserstoffspeicherung (Juergen Garche

  13. Use of Oil Palm Waste as a Renewable Energy Source and Its Impact on Reduction of Air Pollution in Context of Malaysia

    Begum, Shahida; P, Kumaran; M, Jayakumar

    2013-06-01

    One of the most efficient and effective solutions for sustainable energy supply to supplement the increasing energy demand and reducing environment pollution is renewable energy resources. Malaysia is currently the world's second largest producer and exporter of palm oil and 47% of the world's supply of palm oil is produced by this country. Nearly 80 million tonnes of Fresh Fruit Bunches (FFB) are processed annually in 406 palm oil mills and are generating approximately 54 million tonnes of palm oil mill effluent (POME), known to generate biogas consisting of methane - a Green House Gas (GHG) identifiable to cause global warming. This is 21 times more potent GHG than CO2. These two major oil palm wastes are a viable renewable energy (RE) source for production of electricity. If the two sources are used in harnessing the renewable energy potential the pollution intensity from usage of non-renewable sources can also be reduced significantly. This study focused on the pollution mitigation potential of biogas as biogas is a renewable energy. Utilization of this renewable source for the production of electricity is believed to reduce GHG emissions to the atmosphere.

  14. Implementation of Renewable Energy Systems in Denmark

    Meyer, Niels I

    1997-01-01

    Denmark has been one of the first countries in the world to commit itself to a sustainable energy development. This has been substantiated by two official action plans from 1990 and 1996 with emphasis on energy efficiency and supply systems based on renewable energy. In year 2005, renewable energy...... sources are planned to cover 12-14% and in year 2030 about 35% of total Danish energy demand. This paper reviews the experiences with implementation of renewable energy in Denmark with a focus on wind power and biomass....

  15. Renewable energy strategies for sustainable development

    Lund, Henrik

    2005-01-01

    This paper discusses the perspective of renewable energy (wind, solar, wave and biomass) in the making of strategies for a sustainable development. Such strategies typically involve three major technological changes: energy savings on the demand side, efficiency improvements in the energy...... on the case of Denmark, this paper discusses the problems and perspectives of converting present energy systems into a 100 percent renewable energy system. The conclusion is that such development will be possible. The necessary renewable energy sources are present, if further technological improvements...

  16. Renewable Energy Certificate Program

    Gwendolyn S. Andersen

    2012-07-17

    This project was primarily to develop and implement a curriculum which will train undergraduate and graduate students at the University seeking a degree as well as training for enrollees in a special certification program to prepare individuals to be employed in a broad range of occupations in the field of renewable energy and energy conservation. Curriculum development was by teams of Saint Francis University Faculty in the Business Administration and Science Departments and industry experts. Students seeking undergraduate and graduate degrees are able to enroll in courses offered within these departments which will combine theory and hands-on training in the various elements of wind power development. For example, the business department curriculum areas include economic modeling, finance, contracting, etc. The science areas include meteorology, energy conversion and projection, species identification, habitat protection, field data collection and analysis, etc.

  17. The use of marine macroalgae as renewable energy source for reducing CO{sub 2} emissions

    M. Aresta; A. Dibenedetto; I. Tommasi; E. Cecere; M. Narracci; A. Petrocelli; C. Perrone [University of Bari, Bari (Italy). Department of Chemistry and METEA Research Center

    2003-07-01

    The results of studies on selected species of marine macro-algae for the production, under mild energetic conditions, of biofuel, through the extraction of oils or any other material that may be assimilated as a liquid fuel, and their potential for CO{sub 2} capture and as a source of energy. The study was carried out comparing different extraction technologies, among which were SC-CO{sub 2} and solvent extraction. The extraction based on SC-CO{sub 2} is quite advantageous. SC-CO{sub 2} is not toxic and, as its critical temperature is quite close to room temperature, it could be also used for the extraction of thermo-labile compounds. The current cost of production of macro-algae is compared with that of micro-algae, for an economic use of marine biomass for energy production. 17 refs., 1 fig., 3 tabs.

  18. Renewable Energy Essentials: Geothermal

    NONE

    2010-07-01

    Geothermal energy is energy available as heat contained in or discharged from the earth's crust that can be used for generating electricity and providing direct heat for numerous applications such as: space and district heating; water heating; aquaculture; horticulture; and industrial processes. In addition, the use of energy extracted from the constant temperatures of the earth at shallow depth by means of ground source heat pumps (GSHP) is also generally referred to as geothermal energy.

  19. The macro economic relevance of renewable energy sources for Switzerland; Volkswirtschaftliche Bedeutung erneuerbarer Energien fuer die Schweiz

    Nathani, C.; Schmid, C.; Rieser, A.; Ruetter, H. [Ruetter und Partner, Rueschlikon (Switzerland); Bernath, K.; Felten, N. von [Ernst Basler und Partner, Zollikon (Switzerland); Walz, R.; Marscheider-Weidemann, F. [Fraunhofer Institut fuer System- und Innovationsforschung, Karlsruhe (Germany)

    2013-01-15

    This study analyses the economic relevance of renewable energy in Switzerland. In 2010 the enterprises in the renewable energy sector generated a gross value added of 4.8 bn CHF (equalling 0.9% of Swiss GDP). Employment in this sector approximated 22,800 fulltime jobs (0.6% of total Swiss employment). Including supply chain companies, 1.5% of Swiss GDP and 1.2% of total employment can be related to the use of renewable energy. Exports of renewable energy related goods and services equalled 3.2 bn CHF. Since 2000 the Swiss renewable energy sector has experienced an above-average annual growth of more than 4%. Its potential development until the year 2020 was studied with two scenarios. In the policy scenario, that assumes additional policy measures for renewable energy promotion, direct value added of the renewable energy sector would amount to 6.4 bn CHF (+33%), direct employment would increase to 29,200 fulltime jobs (+28%, gross effects resp.). In the more conservative baseline scenario, growth would be much weaker, but still slightly stronger than anticipated for the average economy. (authors)

  20. Renewable Energy Resources in Lebanon

    Hamdy, R.

    2010-12-01

    The energy sector in Lebanon plays an important role in the overall development of the country, especially that it suffers from many serious problems. The fact that Lebanon is among the few countries that are not endowed with fossil fuels in the Middle East made this sector cause one third of the national debt in Lebanon. Despite the large government investments in the power sector, demand still exceeds supply and Lebanon frequently goes through black out in peak demand times or has to resort to importing electricity from Syria. The Energy production sector has dramatic environmental and economical impacts in the form of emitted gasses and environment sabotage, accordingly, it is imperative that renewable energy (RE) be looked at as an alternative energy source. Officials at the Ministry of Energy and Water (MEW) and Lebanese Electricity (EDL) have repeatedly expressed their support to renewable energy utilization. So far, only very few renewable energy applications can be observed over the country. Major efforts are still needed to overcome this situation and promote the use of renewable energy. These efforts are the shared responsibility of the government, EDL, NGO's and educational and research centers. Additionally, some efforts are being made by some international organizations such as UNDP, ESCWA, EC and other donor agencies operating in Lebanon. This work reviews the status of Energy in Lebanon, the installed RE projects, and the potential projects. It also reviews the stakeholders in the field of RE in Lebanon Conclusion In considering the best R.E. alternative, it is important to consider all potential R.E. sources, their costs, market availability, suitability for the selected location, significance of the energy produced and return on investment. Several RE resources in Lebanon have been investigated; Tides and waves energy is limited and not suitable two tentative sites for geothermal energy are available but not used. Biomass resources badly affect the

  1. PYRAMID LAKE RENEWEABLE ENERGY PLAN

    HIGH DESERT GEOCULTURE, LLC

    2009-06-06

    The Pyramid Lake Renewable Energy Plan covers these areas: energy potential (primarily focusing on geothermal resource potential, but also more generally addressing wind energy potential); renewable energy market potential; transmission system development; geothermal direct use potential; and business structures to accomplish the development objectives of the Pyramid Lake Paiute Tribe.

  2. A clear perspective in the matter of renewable energy sources. Data and facts about the energy sources of the future; Der volle Durchblick in Sachen Erneuerbare Energien. Daten and Fakten zu den Energiequellen der Zukunft

    NONE

    2013-04-15

    Are renewable energies not too expensive? Went the lights out when we focus on renewable energy? Do wind turbines destroy the nature? Bioenergy can the people in developing countries go hungry? With the updated brochure ''The full clear view in terms of renewable energy'', the Agency for Renewable Energy works up the most stubborn misunderstandings. The layman will find in the brochure clear answers to frequently asked questions about the potential of renewable energies. Professionals will find support and suggestions for daily energy debate. Many results in the publication of scientific papers are collated and presented in a comprehensive collection of sources to verify the publicly debated theses against renewable energy. [German] Sind Erneuerbare Energien nicht viel zu teuer? Gehen bei uns die Lichter aus, wenn wir auf Erneuerbare Energien setzen? Zerstoeren Windraeder die Natur? Laesst Bioenergie die Menschen in Entwicklungslaendern hungern? Mit der aktualisierten Broschuere: ''Der volle Durchblick in Sachen Erneuerbare Energien'' arbeitet die Agentur fuer Erneuerbare Energien die hartnaeckigsten Missverstaendnisse auf. Der Laie findet in der Broschuere klare Antworten auf haeufig gestellte Fragen zu den Potenzialen Erneuerbarer Energien. Profis finden Unterstuetzung und Anregungen fuer die taegliche Energie-Diskussion. In der Publikation sind viele Ergebnisse wissenschaftlicher Arbeiten zusammengetragen und in einer umfangreichen Quellensammlung aufgefuehrt, um die oeffentlich debattierten Thesen gegen die Erneuerbaren Energien zu ueberpruefen.

  3. Production of sugarcane and tropical grasses as renewable energy source. Third annual report, 1979-1980

    1980-01-01

    Research continued on tropical grasses from Saccharum and related genera as sources of intensively-propagated fiber and fermentable solids. Candidate screening for short-rotation grasses was expanded to include six sorghum x Sudan grass hybrids developed by the Dekalb Company. Sugacane and napier grass yield trends in year 3 include: (1) Increased yields with delay of harvest frequency; (2) lack of response to close spacing; (3) a superiority of napier grass over sugarcane when harvested at intervals of six months or less; and (4) a general superiority of the sugarcane variety NCo 310 over varieties PR 980 and PR 64-1791. Delayed tasseling of a wild, early-flowering S. spontaneum hybrid enabled three crosses to be made in December using commercial hybrids as female parents. Approximately 1000 seedlings were produced. The first field-scale minimum tillage experiment was completed. Sordan 77 produced 2.23 OD tons/acre/10 weeks, with winter growing conditions and a total moisture input of 4.75 inches. Mechanization trials included successful planting of napier grass with a sugarcane planter, and the mowing, solar-drying, and round--baling of napier grass aged three to six months. Production-cost and energy-balance studies were initiated during year 3 using first-ratoon data for intensively propagated sugarcane. Preliminary cost estimates for energy cane (sugarcane managed for total biomass rather than sucrose) were in the order of $25.46/OD ton, or about $1.70/mm Btus.

  4. Future Scenario of Renewable Energy in India

    Sandeep Kumar

    2012-08-01

    Full Text Available This paper presents a review about future scenario of renewable energy in India.Energy is a vital input for economic and social development of any country. With increasing industrialand agricultural activities in the country, the demand for energy is also rising. Solar, wind and biomassare accepted as dependable and widely available renewable sources of energy. To meet the energy requirement for such a fast growingeconomy, India will require an assured supply of 3–5 times more energy than the total energy consumedtoday. The renewable energy is one of the options to meet this requirement Energy is the prime mover of economic growth and is vital to the sustenance of a modern economy. Future economic growth crucially depends on the long-term availability of energy from sources that are affordable, accessible and environmentally friendly. India has obtained application of a variety of renewable energy technologies for use in different sectors too. This paper presents current status, major achievements and future aspects of renewable energy in India. In this paper evaluation of current energy policies for conquering the obstructions and implementing renewables for the future is also been presented.

  5. Internet Renewable energy Information System (IRIS)

    Bäurle, Britta; Nielsen, Vilhjalmur; Ménard, Lionel

    1999-01-01

    Even though the Internet is now a widely accessible data source, the unorganised flood of information makes a specific request e.g. for renewable energy products inefficient. In addition, existing databases on renewable energies are often old and incomplete. The objective of IRIS has been...... to organise and retrieve renewable energy product information on the Internet instead of collecting it manually. Updating coincides with the self interestself-interest of manufacturers to present their latest renewable energy products on their own HTML documents. IRIS is based on a set of powerful tools...... on biogas systems in order to become part of IRIS. IRIS has been developed in the context of the project „AVALANCHE" which is partly funded under the JOULE programme of the European Commission DGXII.Keywords: Renewable Energy Technologies - Electronic Commerce - Information System - META-tags...

  6. Business development in renewable energy

    Krozer, Yoram; Visa, Ion

    2014-01-01

    This paper discusses how to foster development of renewable energy business. Factors that impede or enhance renewable energy in the EU 27 member states in the period 1998–2008 are analyzed. Nine factors are considered: population density, production output and energy sector output to indicate market

  7. Renewable Energy in European Regions

    Krozer, Y.

    2012-01-01

    The regional dynamics of energy innovation, in particular the shift from fossil fuels to renewable energy in the EU, is discussed within the framework of neo-Schumpeterian theory. The EU’s 4.2% average annual growth in renewable energy production in the last decade has been accompanied by diverging

  8. Photoactivated Fuel Cells (PhotoFuelCells. An alternative source of renewable energy with environmental benefits

    Stavroula Sfaelou

    2016-03-01

    Full Text Available This work is a short review of Photoactivated Fuel Cells, that is, photoelectrochemical cells which consume an organic or inorganic fuel to produce renewable electricity or hydrogen. The work presents the basic features of photoactivated fuel cells, their modes of operation, the materials, which are frequently used for their construction and some ideas of cell design both for electricity and solar hydrogen production. Water splitting is treated as a special case of photoactivated fuel cell operation.

  9. Somerset County Renewable Energy Initiative

    Katula, Denise [County of Somerset, Somervile, NJ (United States)

    2014-05-07

    The County of Somerset, New Jersey, through the Somerset County Improvement Authority (SCIA), applied Federal funding through the U.S. Department of Energy to will apply project funds to buy-down the capital costs of equipment associated with the installation of solar photovoltaic (PV) systems at two sites owned by the County. This Renewable Energy Initiative allows the County to take advantage of clean renewable energy, without any adverse debt impacts, and at a price that results in operating budget savings beyond what is presently available in the marketplace. This project addressed the objectives of the Office of Energy Efficiency and Renewable Energy by making the acquisition of renewable energy more affordable for the County, thereby, encouraging other counties and local units to develop similar programs and increase the deployment of solar energy technologies. The two sites that were funded by the DOE grant are part of a much larger, ambitious, and unique renewable energy project, described in the next section.

  10. Preface to Special Topic: Marine Renewable Energy

    Pinto, F. T.; Iglesias, G.; Santos, P. R.; Deng, Zhiqun

    2015-12-30

    Marine renewable energy (MRE) is generates from waves, currents, tides, and thermal resources in the ocean. MRE has been identified as a potential commercial-scale source of renewable energy. This special topic presents a compilation of works selected from the 3rd IAHR Europe Congress, held in Porto, Portugal, in 2014. It covers different subjects relevant to MRE, including resource assessment, marine energy sector policies, energy source comparisons based on levelized cost, proof-of-concept and new-technology development for wave and tidal energy exploitation, and assessment of possible inference between wave energy converters (WEC).

  11. VT Renewable Energy Sites - Solar

    Vermont Center for Geographic Information — (Link to Metadata) The Renewable Energy Atlas of Vermont and this dataset were created to assist town energy committees, the Clean Energy Development Fund and other...

  12. VT Renewable Energy Sites - Wind

    Vermont Center for Geographic Information — (Link to Metadata) The Renewable Energy Atlas of Vermont and this dataset were created to assist town energy committees, the Clean Energy Development Fund and other...

  13. VT Renewable Energy Sites - Hydroelectric

    Vermont Center for Geographic Information — (Link to Metadata) The Renewable Energy Atlas of Vermont and this dataset were created to assist town energy committees, the Clean Energy Development Fund and other...

  14. VT Renewable Energy Sites - Geothermal

    Vermont Center for Geographic Information — (Link to Metadata) The Renewable Energy Atlas of Vermont and this dataset were created to assist town energy committees, the Clean Energy Development Fund and other...

  15. VT Renewable Energy Sites - Landfills

    Vermont Center for Geographic Information — (Link to Metadata) The Renewable Energy Atlas of Vermont and this dataset were created to assist town energy committees, the Clean Energy Development Fund and other...

  16. Mapping the Future of Renewable Energy

    2016-06-01

    This EC-LEDS fact sheet describes the NREL Geospatial Toolkit (GsT), an open-source, map-based software application that provide an intuitive, user-friendly interface for visualizing data and renewable energy potential. The GsT is a country-specific tool that maps renewable energy resources (e.g., for solar, wind, and biomass) in relation to enabling infrastructure like roads and transmission lines, providing necessary information for deploying new clean energy generation.

  17. An Adaptive Tuning Mechanism for Phase-Locked Loop Algorithms for Faster Time Performance of Interconnected Renewable Energy Sources

    Hadjidemetriou, Lenos; Kyriakides, Elias; Blaabjerg, Frede

    2015-01-01

    Interconnected renewable energy sources (RES) require fast and accurate fault ride through (FRT) operation, in order to support the power grid, when faults occur. This paper proposes an adaptive phase-locked loop (adaptive dαβPLL) algorithm, which can be used for a faster and more accurate response...... of the grid-side converter (GSC) control of a RES, particularly under FRT operation. The adaptive dαβPLL is based on modifying the tuning parameters of the dαβPLL, according to the type and voltage characteristics of the grid fault, with the purpose of accelerating the performance of the PLL algorithm....... The proposed adaptive tuning mechanism adjusts the PLL parameters in real time, according to the proposed fault classification unit, in order to accelerate the synchronization performance. The beneficial effect of the proposed adaptive tuning mechanism on the performance of dαβPLL is verified through...

  18. Renewables in Global Energy Supply

    NONE

    2007-07-01

    Renewable energies are essential contributors to the energy supply portfolio as they contribute to world energy supply security, reducing dependency on fossil fuel resources, and provide opportunities for mitigating greenhouse gases. Differences in definition and lack of adequate data complicated the discussion between participants on these key issues. The International Energy Agency believes that this fact sheet can be of use to all to facilitate the debate on the past, current and future place and role of renewables in total energy supply. Our goal is to present as objectively as possible the main elements of the current renewables energy situation. The definitions and coverage of national statistics vary between countries and organisations. In this fact sheet, the renewables definition includes combustible renewables and waste (CRW), hydro, geothermal, solar, wind, tide and wave energy.

  19. Renewable Energy Education for Future Generations

    Ng, R.

    2015-12-01

    Considering the constantly growing use of technology, modern society requires increasing amounts of electrical power. Acknowledging the global efforts to increase the use of renewable energy sources, the Independent Schools Foundation Academy, a school in Hong Kong, plans to provide the opportunity for students to explore the applications of various forms of renewable energy through a Renewable Energy Education Centre (REEC). Two students are involved in the designing and construction of the Renewable Energy Education Centre to understand the technologies, processes, and provide insight from the students' perspective. The REEC will incorporate various uses of renewable energy, including a solar photovoltaic system, hybrid photovoltaic/thermal system, vertical windmill, hot water heater, and heat pump. As a means to enrich students' learning experiences, the REEC will be open to access by science students for a wide range of investigations, such as science experiments related to renewable energy and energy efficiency, providing opportunities for student led research projects, Personal Projects and IB Extended Essays. In short, the Independent Schools Foundation Academy aims to allow students to familiarize themselves with various forms of renewable energy from a young age, and develop a deeper understanding of technologies that will become primary sources of electrical power in the near future.

  20. Smart grid and renewable energy systems

    Blaabjerg, Frede; Guerrero, Josep M.

    2011-01-01

    The electrical energy consumption continues growing and more applications relay on electricity. We can expect that more 60 % of all energy consumption will be converted and used as electricity. Therefore, it is a demand that production, distribution and use of electrical energy are done as effici...... sources, wind energy and photovoltaics. Then main focus is on the power electronics and control technology for wind turbines as they are the largest renewable power contributor, allowing their penetration into a SmartGrid to be even higher in the future....... conventional, fossil based energy sources to renewable energy sources. Another is to use high efficient power electronics in power generation, power transmission/distribution and end-user application. This paper discus trends of the future grid infrastructure as well as the most emerging renewable energy...

  1. Renewable Energy Opportunities at Fort Sill, Oklahoma

    Boyd, Brian K.; Hand, James R.; Horner, Jacob A.; Orrell, Alice C.; Russo, Bryan J.; Weimar, Mark R.; Nesse, Ronald J.

    2011-03-31

    This document provides an overview of renewable resource potential at Fort Sill, based primarily upon analysis of secondary data sources supplemented with limited on-site evaluations. This effort focuses on grid-connected generation of electricity from renewable energy sources and on ground source heat pumps for heating and cooling buildings. The effort was funded by the U.S. Army Installation Management Command (IMCOM) as follow-on to the 2005 Department of Defense (DoD) Renewables Assessment. The site visit to Fort Sill took place on June 10, 2010.

  2. Renewable Energy Opportunities at Fort Polk, Louisiana

    Solana, Amy E.; Boyd, Brian K.; Horner, Jacob A.; Gorrissen, Willy J.; Orrell, Alice C.; Weimar, Mark R.; Hand, James R.; Russo, Bryan J.; Williamson, Jennifer L.

    2010-11-17

    This document provides an overview of renewable resource potential at Fort Polk, based primarily upon analysis of secondary data sources supplemented with limited on-site evaluations. This effort focuses on grid-connected generation of electricity from renewable energy sources and also on ground source heat pumps for heating and cooling buildings. The effort was funded by the U.S. Army Installation Management Command (IMCOM) as follow-on to the 2005 Department of Defense (DoD) Renewables Assessment. The site visit to Fort Polk took place on February 16, 2010.

  3. Power Quality Improvement at Distribution Level for Grid Connected Renewable Energy Sources

    S. Syed Ahmed

    2014-09-01

    Full Text Available The non-linear load current harmonics may result in voltage harmonics and can create a serious PQ problem in the power system network. Active power filters (APF are extensively used to compensate the load current harmonics and load unbalance at distribution level. This results in an additional hardware cost. However, in this project it has incorporated the features of APF in the conventional inverter interfacing renewable with the grid, without any additional hardware cost. Here, the main idea is the maximum utilization of inverter rating which is most of the time underutilized due to intermittent nature of RES. The grid-interfacing inverter can effectively be utilized to perform the four important functions they are to transfer active power harvested from the renewable resources (wind, solar, etc., load reactive power demand support, current harmonics compensation at PCC and current unbalance and neutral current compensation in case of 3-phase 4-wire system. Moreover, with adequate control of grid-interfacing inverter, all the four objectives can be accomplished either individually or simultaneously. The PQ constraints at the PCC can therefore be strictly maintained within the utility standards without additional hardware cost. With such a control, the combination of grid-interfacing inverter and the 3-phase 4-wire linear/non-linear unbalanced load at point of common coupling appears as balanced linear load to the grid. This new control concept is demonstrated with extensive MATLAB/Simulink simulation studies

  4. Cationically polymerizable monomers derived from renewable sources

    Crivello, J.V.

    1992-10-01

    The objectives of this project are to design and synthesize novel monomers which orginate from renewable biological sources and to carry out their rapid, efficient, pollution-free and energy efficient cationic polymerization to useful products under the influence of ultraviolet light or heat. A summary of the results of the past year's research on cationically polymerizable monomers derived from renewable sources is presented. Three major areas of investigation corresponding to the different classes of naturally occurring starting materials were investigated; epoxidized terpenes and natural rubber and vinyl ethers from alcohols and carbohydrates.

  5. Investments in renewable energy sources and protection of confidence; Investitionen in Erneuerbare Energien und Vertrauensschutz

    Papier, Hans-Juergen; Kroenke, Christoph

    2012-07-01

    The energy policy of a state, at least a free and constitutional state like Germany, must always aim in two directions. First, of course, there are the envisaged energy policy goals. But on the other hand the legally protected interests of the private actors of the energy sector must be considered who will be touched by the energy policy measures. The authors show how these two considerations are combined in German energy law. (orig.)

  6. Renewable Energy in Romania after 2007

    Daniela Enachescu

    2016-07-01

    Full Text Available Sustainable development requires obtaining energy from alternative sources which are clean and sustainable. In Romania, there are categories of renewable energy that basically were not used, such as solar PV and wind energy by 2007. Even today, their share is minor compared to energy from conventional sources, but they were made important steps, including in legislation domain. The paper aims to present the evolution of renewable energy in Romania after 2007, as a result of EU integration. The analysis is done separately for installed capacity in the following chapters: Hydropower, Wind Onshore, Solid biomass, Solar Photovoltaic and Biogas.

  7. Economics of Carbon Dioxide Sequestration versus a Suite of Alternative Renewable Energy Sources for Electricity Generation in U.S., California and Illinois

    Ramesh Agarwal

    2012-07-01

    Full Text Available An equilibrium economic model for policy evaluation related to electricity generation at national and individual state level in U.S has been developed. The model takes into account the non-renewable and renewable energy sources, demand and supply factors and environmental constraints (CO2 emissions. Economic policy analysis experiments are carried out to determine the consequences of switching the sources of electricity generation under two scenarios: in first scenario, a switch from coal to renewable sources is made for 10% of electricity generation; in the second scenario, the switch is made for 10% of electricity generation from coal to coal with clean coal technology by employing CO2 capture and sequestration (CCS. The cost of electricity generation from various non-renewable and renewable sources is different and is taken into account in the model. The consequences of this switch on supply and demand, employment, wages, and emissions are obtained from the economic model under three scenarios: (1 energy prices are fully regulated, (2 energy prices are fully adjusted with electricity supply fixed, and (3 energy prices and electricity supply both are fully adjusted. The model is applied to the states of California and Illinois, and at national level.

  8. Economics of Carbon Dioxide Sequestration and Mitigation versus a Suite of Alternative Renewable Energy Sources for Electricity Generation in U.S.

    Zheming Zhang

    2011-01-01

    Full Text Available An equilibrium economic model for policy evaluation related to electricity generation in U.S has been developed; the model takes into account the non-renewable and renewable energy sources, demand and supply factors and environmental constraints. The non-renewable energy sources include three types of fossil fuels: coal, natural gas and petroleum, and renewable energy sources include nuclear, hydraulic, wind, solar photovoltaic, biomass wood, biomass waste and geothermal. Energy demand sectors include households, industrial manufacturing and non-manufacturing commercial enterprises. Energy supply takes into account the electricity delivered to the consumer by the utility companies at a certain price which maybe different for retail and wholesale customers. Environmental risks primarily take into account the CO2 generation from fossil fuels. The model takes into account the employment in various sectors and labor supply and demand. Detailed electricity supply and demand data, electricity cost data, employment data in various sectors and CO2 generation data are collected for a period of nineteen years from 1990 to 2009 in U.S. The model is employed for policy analysis experiments if a switch is made in sources of electricity generation, namely from fossil fuels to renewable energy sources. As an example, we consider a switch of 10% of electricity generation from coal to 5% from wind, 3% from solar photovoltaic, 1% from biomass wood and 1% from biomass waste. The model is also applied to a switch from 10% coal to 10% from clean coal technologies. It should be noted that the cost of electricity generation from different sources is different and is taken into account. The consequences of this switch on supply and demand, employment, wages, and emissions are obtained from the economic model under three scenarios: (1 energy prices are fully regulated, (2 energy prices are fully adjusted with electricity supply fixed, and (3 energy prices and

  9. Marine Renewable Energy Center

    Vigeant, Paul [Univ. of Massachusetts, Dartmouth, MA (United States); Miller, John [Univ. of Massachusetts, Dartmouth, MA (United States); Howes, Brian [Univ. of Massachusetts, Dartmouth, MA (United States); McGowan, Jon G. [Univ. of Massachusetts, Amherst, MA (United States); Baldwin, Kenneth [Univ. of New Hampshire, Durham, NH (United States); Grilli, Annette [Univ. of Rhode Island, Kingston, RI (United States); Terray, Eugene [Woods Hole Oceanographic Inst., Woods Hole, MA (United States)

    2013-10-08

    Project Goals: The funding provided by this contract supported the following activities: A) Test Site Development; B) Seed Grant Funded Technology Development; C) Stakeholder Activities The first year of funding was dedicated to the formation of the NE MREC University Consortium which was comprised of University of Massachusetts Dartmouth (UMD) and Amherst (UMA), Massachusetts Institute of Technology (MIT), Woods Hole Oceanographic Institution (WHOI), University of New Hampshire (UNH), and the University of Rhode Island (URI). The consortium worked together to encourage research and promote benefits of obtaining energy from ocean wind, waves, tides and currents. In addition, NE MREC’s goal was to fund projects aimed at potential test sites with the first year funding going to studies of the potential for tidal device testing in Muskeget Channel, at the General Sullivan Bridge in New Hampshire, and for wave device testing at the proposed National Offshore Renewable Energy Innovation Zone (NOREIZ) located off the Massachusetts coast. The project spanned 4.5 years and addressed three specific tasks that are interrelated but also served as independent investigations.

  10. Energy system analysis of CAES technologies in the Danish energy system with high penetration of fluctuating renewable energy sources

    Salgi, Georges Garabeth; Lund, Henrik

    2006-01-01

    countries. However, plans to expand wind power locally and in the neighbouring countries could restrain the export option and create transmission congestion challenges. This results in a need to increase the flexibility of the local electricity system. Compressed Air Energy Storage (CAES) has been proposed......Wind power supplies 20% of the annual electricity demand in Denmark, while 50% is produced by combined heat and power (CHP). The installed wind turbine capacity in Western Denmark exceeds the local demand at certain points in time. So far, excess production has been exported to neighbouring...... as a potential solution for levelling fluctuating wind power production and maintaining system balance. Compared to other electricity storage technologies, CAES provides a large storage capacity using readily available technologies. Results from this paper, however, show that in order to have a significant...

  11. A review of the potential of renewable energy sources for the State of Jammu and Kashmir (India)

    Nisar, Arsalan, E-mail: arsalan.nisar@alumnos.upm.es [Department of Industrial Engineering, Business Administration and Statistics, School of Industrial Engineering, Technical University of Madrid (UPM), Jose Gutierrez Abascal, 2, 28006 Madrid (Spain); Rodriguez Monroy, Carlos, E-mail: crmonroy@etsii.upm.es [Department of Industrial Engineering, Business Administration and Statistics, School of Industrial Engineering, Technical University of Madrid (UPM), Jose Gutierrez Abascal, 2, 28006 Madrid (Spain)

    2011-10-15

    The future economic development trajectory for India is likely to result in rapid and accelerated growth in energy demand, with expected shortages. Many of its current policies and strategies are aimed at the improvement and possible maximization of energy production from the renewable sector. It is also clear that while energy-conservation and energy-efficiency can make an important contribution in the national energy strategy, renewable energies will be essential to the solution and are likely to play an increasingly important role for the growth of grid power, providing energy access, reducing consumption of fossil fuels, and helping India pursue its low carbon progressive pathway. However, most of the states in India, like the northernmost State of Jammu and Kashmir (J and K), have experienced an energy crisis over a sustained period of time. As India intends to be one of the emerging powers of the 21st century, it has to embark upon with these pressing issues in a more sustainable manner and accordingly initiate various renewable energy projects within these states. This paper will provide a broad-spectrum view about the energy situation within J and K and will highlight the current policies along with future strategies for the optimal utilization of renewable energy resources. - Highlights: > To present an overview of the current energy situation in the State of Jammu and Kashmir, India. > To analyze the potential of the various renewable energy resources available in the State given the existing constraints. > To state the challenges of the administration to incentivize the participation of private initiative in energy development.

  12. RENEWABLE ENERGY STRATEGIES: WHERE EUROPEAN UNION HEADED?

    RADULESCU IRINA GABRIELA

    2015-06-01

    Full Text Available The states from European Union must take advantage from renewable energy sources in order to revive the economy. Climate change creates new jobs and could reduce energy imports which would stimulate the economy of those states. The European Union should support research in the field, apply more efficient policies in energy, and create economies of scale to get an integrated European energy market in which the main actors can reduce the cost of production of renewable energy. In addition, it is possible to use the comparative advantages of the Member States and not only, like Greece, through solar energy, Southern Mediterranean, through distribution networks interconnections with EU, Russia and Ukraine, through biomass and the North Sea, through wind energy. This paper refers to the evolution and trends of the renewable energy sources and presents some scenarios of it.

  13. Lancashire and Yorkshire Renewable Energy Planning Study

    NONE

    1997-07-01

    The central aims of the Lancashire and Yorkshire Renewable Energy Planning Study (LYREPS) are to: identify renewable energy resources in the region and evaluate the opportunities for their deployment; promote a local-level development plan policy framework for the utilisation of renewable energy sources which is fully integrated with established land use and economic development strategies in the region. The availability of the following resources was investigated: landfill gas; municipal and industrial wastes; animal slurry; biomass; straw; active solar; passive solar design; photovoltaics; hydro; and wind. (author)

  14. Different Predictive Control Strategies for Active Load Management in Distributed Power Systems with High Penetration of Renewable Energy Sources

    Zong, Yi; Bindner, Henrik W.; Gehrke, Oliver

    2013-01-01

    In order to achieve a Danish energy supply based on 100% renewable energy from combinations of wind, biomass, wave and solar power in 2050 and to cover 50% of the Danish electricity consumption by wind power in 2020, it requires more renewable energy in buildings and industries (e.g. cold stores...... and residential sectors, based on dynamic power price and weather forecast, considering users’ comfort settings to meet an optimization objective, such as maximum profit or minimum energy consumption. Some field tests were carried out on a facility for intelligent, active and distributed power systems, which...... is built around a small power grid with renewable power generations (two wind turbines and solar panels), a vanadium battery for storage, EV-charging infrastructure for EVs, and an intelligent office building. The simulation and field tests demonstrated that GA-based and MPC-based predictive control...

  15. Renewable energy policy and wind energy development in Germany

    Zitzer, Suzanne E. [UFZ - Umweltforschungszentrum Leipzig-Halle GmbH, Leipzig (Germany). Department Urban Ecology, Environmental Planing and Transport

    2009-07-15

    The author of the contribution under consideration reports on the renewable energy policy and wind energy development in the Federal Republic of Germany. First of all, the author describes the historical development of the renewable energy policy since the 1970ies. Then, the environmental policies of the Red-Green Coalition (till to 2005) and of the Grand Coalition (since 2005) as well as the Renewable Energy Sources Act are described. The next section of this contribution is concern to the development of wind energy in the Federal Republic of Germany under consideration of onshore wind energy and offshore wind energy.

  16. Fuel-efficiency of hydrogen and heat storage technologies for integration of fluctuating renewable energy sources

    Mathiesen, Brian Vad; Lund, Henrik

    2005-01-01

    sources as well as power plants and CHP (Combined heat and power production). Emphasis is put on the need for ancillary services. Devices to store electricity as well as devices to store heat can be used to help the integration of fluctuating sources. Electricity storage technologies can be used...... to relocate electricity production directly from the sources, while heat storage devices can be used to relocate the electricity production from CHP plants and hereby improve the ability to integrate RES. The analyses are done by advanced computer modelling and the results are given as diagrams showing...

  17. RENEWABLE ENERGY SOURCES AND THEIR POTENTIAL ROLE IN MITIGATION OF CLIMATE CHANGES AND AS A SUSTAINABLE DEVELOPMENT DRIVER IN BOSNIA AND HERZEGOVINA

    Petar M Gvero

    2010-01-01

    Full Text Available Bosnia and Herzegovina have significant physical potential regarding to renewable energy sources. Hydro, biomass, geothermal, wind, and solar potential can play important role in the whole state economy. Bosnia and Herzegovina is Non-Annex I country according to UNFCCC and according to that it is obligated to participate in the global efforts in order to reduce green house gases emission. This paper gives some analysis of the physical, technological, economic, and market potential of renewable energy sources in Bosnia and Herzegovina and their potential role in mitigation of climate changes. Paper also gives the analysis of the potential connections between renewable energy sources and sustainable development of the economy, taking in to consideration specific political structure of the state. Bosnia and Herzegovina is consisting from two entities: Republic of Srpska and Federation of Bosnia and Herzegovina, and Brcko District; energy sector and climate changes mitigation measures are under their jurisdiction. According to that some of this paper results can be useful for the improvement of entity and state strategies with the final aim to place renewable energy sources on the right position, as some of the major economy drivers, not only in Bosnia and Herzegovina, but in whole region.

  18. The Economics of the Mandatory Renewable Energy Target (MRET)

    del Mundo, Israel; Wills, Ian R.

    2005-01-01

    In response to increasing awareness of climate change, the Howard government implemented the Mandatory Renewable Energy Target (MRET) in 2001. It requires electricity wholesalers to source an additional 9500 GWh of electricity from renewable sources by 2010. Electricity wholesalers are required to subsidise renewable energy generators by purchasing Renewable Energy Certificates (RECs) equivalent to the target; failure to do so incurs a penalty of $40 per megawatt. Economic analysis is used to...

  19. Developing Government Renewable Energy Projects

    Kurt S. Myers; Thomas L. Baldwin; Jason W. Bush; Jake P. Gentle

    2012-07-01

    The US Army Corps of Engineers has retained Idaho National Laboratory (INL) to conduct a study of past INL experiences and complete a report that identifies the processes that are needed for the development of renewable energy projects on government properties. The INL has always maintained expertise in power systems and applied engineering and INL’s renewable energy experiences date back to the 1980’s when our engineers began performing US Air Force wind energy feasibility studies and development projects. Over the last 20+ years of working with Department of Defense and other government agencies to study, design, and build government renewable projects, INL has experienced the do’s and don’ts for being successful with a project. These compiled guidelines for government renewable energy projects could include wind, hydro, geothermal, solar, biomass, or a variety of hybrid systems; however, for the purpose of narrowing the focus of this report, wind projects are the main topic discussed throughout this report. It is our thought that a lot of what is discussed could be applied, possibly with some modifications, to other areas of renewable energy. It is also important to note that individual projects (regardless the type) vary to some degree depending on location, size, and need but in general these concepts and directions can be carried over to the majority of government renewable energy projects. This report focuses on the initial development that needs to occur for any project to be a successful government renewable energy project.

  20. Report on power consumption from renewable energy sources in France; Rapport sur la consommation d'electricite produite a partir de sources d'energie renouvelable en France

    NONE

    2006-03-15

    This report presents an analysis of the realization of the national objectives of domestic consumption of electricity of renewable origin. Conformably with article 3 of the European directive no 2001/77/CE from September 27, 2001, it takes into account the climatic factors susceptible to interfere with the realization of the objectives and indicates to what extent the actions implemented are conformable with the national commitment of France in the domain of climatic change. Content: national objectives and tools for the sustained development of renewable energy sources (programs, investments, financial incentives, environmental policy), power consumption of renewable origin in 2004 (demand factors, evolution of renewable power generation between 1997 and 2004), 2005 highlights. (J.S.)

  1. Innovation strategies for renewable energy

    McCarthy, S.

    1999-01-01

    Innovation is the commercial exploitation of an invention requiring marketing, management, financial and legal skills. Renewable energy is a high technology, knowledge-based business with a global market and, being decentralised, is suited to all regions of the world. Key issues for an innovation strategy for renewable energy are identified. They include: accessing the available finance for innovation; developing local expertise; networking with renewable energy experts; identifying the best available technology, expertise and technology transfer arrangements and adapting these to the region and enterprise. The ultimate success of the strategy will be judged by the new level of economic activity in the enterprise. (UK)

  2. The renewable energies; Les energies renouvelables

    NONE

    2004-07-01

    The renewable energies are everywhere but also irregular. Thus they need savings in our energy consumptions. This document provides information, such as economics, capacity and implementation, on the following renewable energies: the wind power, the solar energy, the photovoltaic energy, the biogas, the geothermal energy, the hydroelectricity, the wood. It also presents a state of the art and examples of bio-climatic architecture. (A.L.B.)

  3. Renewable Energy and Storage Implementation in Naval Station Pearl Harbor

    2015-06-01

    NAVFAC Naval Facilities Engineering Command NOx nitrogen oxide NPV net present value NREL National Renewable Energy Laboratory NSPH Naval Station...and frequency fluctuations inherent to renewable sources. These fluctuations generate higher maintenance cost as a result (Henne, 2014) further... regulate and distribute power, 2. increase renewable energy consumption, 6 3. and increase energy reliability for fixed installations critical

  4. Contribution of renewable energy sources to electricity production in the La Rioja Autonomous Community, Spain. A review

    Lopez Gonzalez, Luis Maria; Lopez Ochoa, Luis Maria [Grupo de Termodinamica Aplicada, Energia y Construccion, Escuela Tecnica Superior de Ingenieria Industrial, Universidad de La Rioja, C/Luis de Ulloa, 20, 26004 Logrono (La Rioja) (Spain); Sala Lizarraga, Jose Maria [E.T.S. de Ingenieros Industriales de Bilbao, Universidad del Pais Vasco (Spain); Miguez Tabares, Jose Luis [E.T.S. de Ingenieros Industriales de Vigo, Universidad de Vigo (Spain)

    2007-08-15

    The implementation of the emissions market should imbue renewable energies with a greater degree of competitiveness regarding conventional generation. In order to comply with the Kyoto protocol, utilities are going to begin to factor in the cost of CO{sub 2} (environmental costs) in their overall generating costs, whereby there will be an increase in the marginal prices of the electricity pool. This article reviews the progress made in the La Rioja Autonomous Community (LRAC) in terms of the introduction of renewable energy technologies since 1996, where renewable energy represents approximately only 10% of the final energy consumption of the LRAC. Nonetheless, the expected exploitation of renewable energies and the recent implementation of a combined cycle facility mean that the electricity scenario in La Rioja will undergo spectacular change over the coming years: we examine the possibility of meeting a target of practical electrical self-sufficiency by 2010. In 2004, power consumption amounted to 1494GWh, with an installed power of 1029.0MW of electricity. By 2010, the Arrubal combined cycle facility will produce around 9600GWh/year, thereby providing a power generation output in La Rioja of close to 2044.7MW, which will involve almost doubling the present output, and multiplying by 8.9 that recorded in this Autonomous Community in 2001. (author)

  5. Dispersed, Decentralized and Renewable Energy Sources: Alternatives to National Vulnerability and War.

    1980-12-01

    precision in prime movers and early power machinery favored use of large amounts of fossil fuel for transportation and power processes. The energy could not... heliostats that direct sunlight to a central receiving point. Steam produced from these high temperatures can be used to generate electricity with a...double-axis tracking heliostats (flat mirrored tracking surfaces) is directed to a focal point on a central receiving tower. Figure 3.8-1 illustrates a

  6. State Clean Energy Practices: Renewable Energy Rebates

    Lantz, E.; Doris, E.

    2009-03-01

    This report functions as a primer for renewable energy rebate programs. It highlights the impacts of specific renewable energy rebate programs on renewable energy markets around the country, as well as rebate program impacts on overarching energy policy drivers. It also discusses lessons learned, challenges, ideal applications, keys to success, and complementary and alternative policies. Results indicate that rebate programs can have a strong deployment impact on emerging renewable energy markets. This report focuses on renewable energy rebate programs, which are being analyzed as part of the State Clean Energy Policies Analysis (SCEPA) project. SCEPA is being used to quantify the impacts of existing state policies, and to identify crucial policy attributes and their potential applicability to other states.

  7. State Clean Energy Practices. Renewable Energy Rebates

    Lantz, Eric [National Renewable Energy Lab. (NREL), Golden, CO (United States); Doris, Elizabeth [National Renewable Energy Lab. (NREL), Golden, CO (United States)

    2009-03-01

    This report functions as a primer for renewable energy rebate programs. It highlights the impacts of specific renewable energy rebate programs on renewable energy markets around the country, as well as rebate program impacts on overarching energy policy drivers. It also discusses lessons learned, challenges, ideal applications, keys to success, and complementary and alternative policies. Results indicate that rebate programs can have a strong deployment impact on emerging renewable energy markets. This report focuses on renewable energy rebate programs, which are being analyzed as part of the State Clean Energy Policies Analysis (SCEPA) project. SCEPA is being used to quantify the impacts of existing state policies, and to identify crucial policy attributes and their potential applicability to other states.

  8. Solar Renewable Energy. Teaching Unit.

    Buchanan, Marion; And Others

    This unit develops the concept of solar energy as a renewable resource. It includes: (1) an introductory section (developing understandings of photosynthesis and impact of solar energy); (2) information on solar energy use (including applications and geographic limitations of solar energy use); and (3) future considerations of solar energy…

  9. The clean biogas like an renewable energy source; El biogas limpio como fuente de energia renovable

    Blanco Ortega, J.

    2008-07-01

    The aim of the project is to find an optimal solution to clearing the biogas and remove the H2 S from it. The solution has to be efficient, rentable and easy to use. There are many solutions, but there is not one standard solution indeed the efficiency depends on many different influences e.g. the type of manure or kind of waste. Common solutions; aeration, ferrum- chloride, blood and absorption have been studied and advanced in Scandinavian region. This kind of energy result easy to implement it in system with a big amount of manure, such as, cows and pigs farms, and it needs a little invest to do it possible. (Author)

  10. Offshore Renewable Energy Installations: Impact on Navigation and Marine Safety

    2011-01-01

    To reduce our dependence on foreign energy supplies, alternative or renewable energy sources are being pursued. These sources exploit a wide range of...technologies: solar photovoltaics or power plants; hydroelectricity (dams); ocean thermal energy conversion facilities; and offshore renewable energy installations...to affect marine navigation and safety, and although no offshore renewable energy installations presently exist in U.S. waters, several are

  11. Solar Energy Education. Renewable energy activities for biology

    1982-01-01

    An instructional aid for teachers is presented that will allow biology students the opportunity to learn about renewable energy sources. Some of the school activities include using leaves as collectors of solar energy, solar energy stored in wood, and a fuel value test for green and dry woods. A study of organic wastes as a source of fuel is included. (BCS)

  12. RELATIVE ECONOMIC INCENTIVES FOR HYDROGEN FROM NUCLEAR, RENEWABLE, AND FOSSIL ENERGY SOURCES

    Gorensek, M; Charles W. Forsberg, C

    2008-08-04

    The specific hydrogen market determines the value of hydrogen from different sources. Each hydrogen production technology has its own distinct characteristics. For example, steam reforming of natural gas produces only hydrogen. In contrast, nuclear and solar hydrogen production facilities produce hydrogen together with oxygen as a by-product or co-product. For a user who needs both oxygen and hydrogen, the value of hydrogen from nuclear and solar plants is higher than that from a fossil plant because 'free' oxygen is produced as a by-product. Six factors that impact the relative economics of fossil, nuclear, and solar hydrogen production to the customer are identified: oxygen by-product, avoidance of carbon dioxide emissions, hydrogen transport costs, storage costs, availability of low-cost heat, and institutional factors. These factors imply that different hydrogen production technologies will be competitive in different markets and that the first markets for nuclear and solar hydrogen will be those markets in which they have a unique competitive advantage. These secondary economic factors are described and quantified in terms of dollars per kilogram of hydrogen.

  13. The conversion of renewable biogas source into energy; A conversao da fonte renovavel biogas em energia

    Coelho, Suani Teixeira; Velazquez, Silvia Maria Stortini Gonzalez; Martins, Osvaldo Stella; Abreu, Fernando Castro de [Universidade de Sao Paulo (USP), SP (Brazil). Inst. de Eletrotecnica e Energia]|[Centro Nacional de Referencia em Biomassa (CENBIO), Sao Paulo, SP (Brazil)]. E-mails: suani@iee.usp.br; sgvelaz@iee.sup.br; omartins@iee.usp.br; fcabreu@iee.usp.br

    2006-07-01

    This article intend to present some considerations directed to electricity generation with small systems (micro turbine and conventional engines ), using biogas generated by sewage treatment process in SABESP (Basic Sanitation Company of Sao Paulo State), located at Barueri, Brazil. This project, pioneer in Latin America, is being accomplished together with BUN - Biomass Users Network of Brazil (proponent), in association with CENBIO - Biomass Reference National Center (executer), with patronage of FINEP / CT-ENERG (financial backer), by means of Convention No: 23.01.0653.00, regarding to ENERG-BIOG Project - Installation and Tests of an Electric Energy Generation Demonstration Unit from Biogas Sewage Treatment. The study is being done at Barueri Sewage Treatment Plant.This plant operate with anaerobic digestion process, which has as mainly products biogas (composed mainly by methane) and sludge. Part of the methane produced at the anaerobic process is burnt in a boiler being used to increase digesters temperature. The rest of the methane is burnt in flare to reduce the impacts caused by gases emissions. This article presents some technical, financial and environmental project results, related to the exploitation of sewer biogas for power generation, as well as bigger details about generation systems (biogas micro turbine), used in the facility. (author)

  14. 76 FR 7815 - Renewable Energy and Energy Efficiency Advisory Committee

    2011-02-11

    ... International Trade Administration Renewable Energy and Energy Efficiency Advisory Committee AGENCY... Renewable Energy and Energy Efficiency Advisory Committee (RE&EEAC) will hold a meeting to hear....S. renewable energy and energy efficiency companies, to review subcommittee reports on...

  15. Effects of hydraulic retention time on cultivation of indigenous microalgae as a renewable energy source using secondary effluent.

    Takabe, Yugo; Hidaka, Taira; Tsumori, Jun; Minamiyama, Mizuhiko

    2016-05-01

    Secondary effluent from wastewater treatment plants is suitable media for cultivating microalgae as a renewable energy source, and hydraulic retention time (HRT) control in culture is important to conduct well-planned outdoor indigenous microalgae cultivation with secondary effluent. This study revealed cultivation characteristics under various HRT by continuous 6-month experiments. In addition, effects of HRT on cultivation were determined by a mathematical model that described indigenous microalgae growth. Cultivated biomass mainly consisted of Chlorophyceae and its detritus regardless of HRT, and 5.93-14.8g/m(2)/day of biomass yield was obtained. The cultivated biomass had a stable higher heating value of 16kJ/g. Sensitivity analysis of the model suggests that HRT control had great effects on biomass yield, and 2-3days of HRT were recommended to obtain maximum biomass yield under certain weather conditions (temperature: approximately 12-25°C and solar radiation: approximately 8-19MJ/m(2)/day).

  16. Policies for 100% Renewable Energy Systems

    Hvelplund, Frede

    2014-01-01

    The official Danish energy policy goal is both to increase the wind power share of electricity consumption from 33% in 2014 to 50% by 2020 and to have a 100% renewable energy based energy system by 2050. This is a huge technological change from stored, scarce and polluting fossil fuels...... to fluctuating, abundant and clean energy sources. “Stored” fossil fuels can be used when needed; fluctuating energy sources must be captured when available and transformed to meet the energy needs of society in the right amounts and at the right time. We are amidst this change. Renewable energy has come of age...... and is no longer a minor technology experimenting in the corner of the energy scene, but has become a large new technology taking away considerable market shares from the old fossil fuel technologies....

  17. 2009 Renewable Energy Data Book, August 2010

    2010-08-01

    This Renewable Energy Data Book for 2009 provides facts and figures on energy in general, renewable electricity in the United States, global renewable energy development, wind power, solar energy, geothermal power, biopower, hydropower, advanced water power, hydrogen, renewable fuels, and clean energy investments.

  18. 2010 Renewable Energy Data Book (Book)

    Gelman, R.

    2011-10-01

    This Renewable Energy Data Book for 2010 provides facts and figures on energy in general, renewable electricity in the United States, global renewable energy development, wind power, solar energy, geothermal power, biopower, hydropower, advanced water power, hydrogen, renewable fuels, and clean energy investments.

  19. 2011 Renewable Energy Data Book (Book)

    Gelman, R.

    2012-10-01

    This Renewable Energy Data Book for 2011 provides facts and figures on energy in general, renewable electricity in the United States, global renewable energy development, wind power, solar energy, geothermal power, biopower, hydropower, advanced water power, hydrogen, renewable fuels, and clean energy investments.

  20. Renewable energy prospects for implementation

    Jackson, Tim

    1993-01-01

    Renewable Energy: Prospects for Implementation contains papers that were originally commissioned by the journal Energy Policy for a series on renewable energy appearing between January 1991 to September 1992. In view of the fast-changing demands on conventional energy supply to meet environmental imperatives, it seemed timely to reproduce here a selection of those papers with a new introduction and a revised concluding chapter by the Editor of the series, Dr Tim Jackson, a research fellow with the Stockholm Environment Institute. The book is organized into four parts. The papers in Part I

  1. World potential of renewable energies

    Dessus, B.; Devin, B.; Pharabod, F.

    1991-07-01

    A comprehensive analysis, region by region, of the actually accessible renewable energies at a given horizon, is presented. The same methodology as the one employed to derive ``proven fossil energy reserves`` from ``energy resources`` is adopted, in which resources are defined by quantitative information on physical potential, while reserves take into account technical and economical accessibility. As renewable resources are fluctuating with time and are diluted in space and not readily transportable or storeable, it is necessary to consider the presence of populations or activities near enough to be able to profit by these diluted and volatile energies.

  2. RENEWABLE ENERGY IN TOURISM

    MĂDĂLINA MIHĂILĂ

    2012-01-01

    Recent reports published by the International Energy Agency and U.S. Department of Energy, regarding the global energy outlook for the first three decades of the XXI century, warns of global trends on energy demand, increasing dependence on energy imports, coal use and volume emissions of greenhouse gases, torism industry being one of the biggest energy consumption industry. Uncertainties on different models of regional development and access of the world to traditional energy resources requi...

  3. The market premium of the German Renewable Energy Sources Act 2012. Does it really contribute to both market and system integration of renewables?; Die Marktpraemie im EEG 2012. Ein sinnvoller Beitrag zur Markt- und Systemintegration erneuerbarer Energien?

    Gawel, Erik [Helmholtz-Zentrum fuer Umweltforschung, Leipzig (Germany). Dept. Oekonomie; Univ. Leipzig (Germany). Inst. fuer Infrastruktur und Ressourcenmanagement; Purkus, Alexandra [Helmholtz-Zentrum fuer Umweltforschung (Germany). Dept. Bioenergie

    2013-03-15

    With the share of renewable energies within the electricity sector rising, improving their market integration (i.e. inclusion in the steering and remuneration processes of the electricity market) and system integration (i.e. enhanced responsibility for grid stability) is of increasing importance. To transform the energy system efficiently while ensuring security of supply, it is necessary to increase the alignment of renewable electricity production with short- and long-term market signals. The German Renewable Energy Sources Act 2012 introduced the market premium to provide market experience to renewable plant operators and incentives for demand-oriented electricity production. Shortly after its introduction, the instrument is already being criticised as ineffective and expensive. Building on early experiences, this article examines whether the market premium in its current design improves market and/or system integration, and if it seems suitable in principle to contribute to these aims (effectiveness). Also, potential efficiency gains and additional costs of ''administering integration'' are discussed (efficiency). While market integration in a strict sense (i.e. exposing renewables to price risks) is not the purpose of the market premium, it has successfully increased participation in direct marketing. However, windfall profits are high, and the benefits of gradually leading plant operators towards the market are questionable. Incentives for demand-oriented electricity production are established, but they prove insufficient particularly in the case of intermittent renewable energy sources. A continuation of the instrument in its current form therefore does not seem recommendable. To conclude, potential alternative solutions are presented.

  4. Potential of the City of Belgrade’s urban areas and establishment of institutional, strategic and planning framework for utilization of renewable energy sources and energy efficiency within the City of Belgrade

    Lalošević Marija

    2015-01-01

    Full Text Available The paper analyzes the potential of renewable energy sources within the area of City of Belgrade, and explores the possibilities of their further implementation in the field of renewable energy sources and energy efficiency, in line with mandatory EU Directives. A synergetic approach has been proposed in the recommendations for the implementation of goals/targets and policies in the fields of renewable energy sources and energy efficiency in the City of Belgrade. They put an emphasis on the importance of implementation of the strategic documents of the City. Recommendations on have been provided regarding the required institutional preconditions that have to be met in order for these goals to be achieved, as well as urbanistic and building design-related measures/standards in achieving energy efficiency.

  5. Coordinated renewable energy support schemes

    Morthorst, P.E.; Jensen, S.G.

    2006-01-01

    This paper illustrates the effect that can be observed when support schemes for renewable energy are regionalised. Two theoretical examples are used to explain interactive effects on, e.g., the price of power, conditions for conventional power producers, and changes in import and export of power...... RES-E support schemes already has a common liberalised power market. In this case the introduction of a common support scheme for renewable technologies will lead to more efficient sitings of renewable plants, improving economic and environmental performance of the total power system...

  6. Strategy and development means of the energy efficiency and renewable energies sources in France; Strategie et moyens de developpement de l'efficacite energetique et des sources d'energies renouvelables en France

    Cochet, Y.

    2000-09-01

    In the framework of the renewable energies development policy and the energy mastership wanted by the Government, a document has been asked by the Prime Minister. It evaluates the development prospects at long and medium dated, of the main chains of renewable energies production taking into account the national developable deposits size, the technologies assessment, the environmental impacts and the competition facing the traditional energies. It evaluates the measures leading to an increasing efficiency. Measures concerning the regulations, the budget, and the fiscality are also discussed. From these analysis, a national strategy for actions in favor the renewable energies, are proposed. (A.L.B.)

  7. Communication Systems for Grid Integration of Renewable Energy Resources

    Yu, F Richard; Xiao, Weidong; Choudhury, Paul

    2011-01-01

    There is growing interest in renewable energy around the world. Since most renewable sources are intermittent in nature, it is a challenging task to integrate renewable energy resources into the power grid infrastructure. In this grid integration, communication systems are crucial technologies, which enable the accommodation of distributed renewable energy generation and play extremely important role in monitoring, operating, and protecting both renewable energy generators and power systems. In this paper, we review some communication technologies available for grid integration of renewable energy resources. Then, we present the communication systems used in a real renewable energy project, Bear Mountain Wind Farm (BMW) in British Columbia, Canada. In addition, we present the communication systems used in Photovoltaic Power Systems (PPS). Finally, we outline some research challenges and possible solutions about the communication systems for grid integration of renewable energy resources.

  8. Status report on renewable energy in the States

    Swezey, B.; Sinclair, K.

    1992-12-01

    As the concept of integrated resource planning has spread among states and utilities, a reexamination of the role of renewable energy sources in the utility resource mix is taking place. This report documents the findings of a study of state regulatory commissions undertaken to: (1) help assess the state of knowledge and awareness about renewable energy resources and technologies; (2) assess the impacts of state policies on renewable energy development; and (3) identify important information needs. The key findings from this effort are: Renewable energy development has occurred only slowly over the last decade, and a small number of states account for the bulk of development. The development that has occurred has been limited to non-utility entities. Directed state policies have been a key driver in renewable energy development. Those states not currently addressing renewables may need more data and information before they proceed with directed policies. Other important observations are: The cost of renewables is an overriding concern. Regulators distinguish between 'emerging' and 'established' renewable energy technologies. Specific data are lacking on state-level renewable energy development. Detailed renewable resource assessments have yet to be performed in many states. This report identifies renewable energy information needs of state regulators. However, a number of concerns are also identified that must be addressed before renewables will receive serious attention in many of those states with limited renewables experience. Finally, the report catalogs a wide variety of policies that have been utilized in the states to promote greater development of renewable energy.

  9. Solar belt and wind farm oasis. Which portion have renewable energy sources at the power generation in Chile?; Sonnenguertel und Windparkoasen. Welchen Anteil haben Erneuerbare Energien an der Stromerzeugung in Chile?

    Abarzua, Tatiana [DGS, Berlin (Germany)

    2012-05-15

    The author of the contribution under consideration reports on the portion of renewable energies at the power generation in Chile. The technically usable potential of renewable energy sources (hydroelectric power plants, photovoltaic systems, wind power plant, geothermal power plants, biogas plants, ocean energy systems) as well as the already approved photovoltaic systems are presented.

  10. 2012 Renewable Energy Data Book (Book)

    Gelman, R.

    2013-10-01

    This Renewable Energy Data Book for 2012 provides facts and figures in a graphical format on energy in general, renewable electricity in the United States, global renewable energy development, wind power, solar power, geothermal power, biopower, hydropower, advanced water power, hydrogen, renewable fuels, and clean energy investment.

  11. 2013 Renewable Energy Data Book (Book)

    Esterly, S.

    2014-12-01

    This Renewable Energy Data Book for 2013 provides facts and figures on energy in general, renewable electricity in the United States, global renewable energy development, wind power, solar power, geothermal power, biopower, hydropower, advanced water power, hydrogen, renewable fuels, and clean energy investment.

  12. Renewable energy in Russia: The take off in solid bioenergy?

    Pristupa, A.O.; Mol, A.P.J.

    2015-01-01

    Triggered by debates on climate change and energy security, renewable energy sources are presently high on the political agenda in many countries. In this regard Russia seems to stand aside worldwide developments. Until recently Russia¿s enormous potential in renewable energy sources remained poorly

  13. Introduction of energy management and renewable energy sources. An investigation of factors of success in German communities; Einfuehrung von Energiemanagement und erneuerbaren Energien. Eine Untersuchung von Erfolgsfaktoren in deutschen Kommunen

    Bolay, Sebastian

    2009-07-01

    Energy management and renewable energy sources have come into the focus of local actors in Germany. This study is the first to investigate boundary conditions and reasons for community actions on a large scale, as well as the state of implementation in both fields. It identifies factors of success with positive effects on the introduction of energy management and renewable energy sources in communities and also presents recommendations for communal actors. Models developed on the basis of scientific theories and concepts are investigated by the author on the basis of expert interviews, case studies, and an online enquiry. (orig.)

  14. An optimal renewable energy mix for Indonesia

    Leduc, Sylvain; Patrizio, Piera; Yowargana, Ping; Kraxner, Florian

    2016-04-01

    Indonesia has experienced a constant increase of the use of petroleum and coal in the power sector, while the share of renewable sources has remained stable at 6% of the total energy production during the last decade. As its domestic energy demand undeniably continues to grow, Indonesia is committed to increase the production of renewable energy. Mainly to decrease its dependency on fossil fuel-based resources, and to decrease the anthropogenic emissions, the government of Indonesia has established a 23 percent target for renewable energy by 2025, along with a 100 percent electrification target by 2020 (the current rate is 80.4 percent). In that respect, Indonesia has abundant resources to meet these targets, but there is - inter alia - a lack of proper integrated planning, regulatory support, investment, distribution in remote areas of the Archipelago, and missing data to back the planning. To support the government of Indonesia in its sustainable energy system planning, a geographic explicit energy modeling approach is applied. This approach is based on the energy systems optimization model BeWhere, which identifies the optimal location of energy conversion sites based on the minimization of the costs of the supply chain. The model will incorporate the existing fossil fuel-based infrastructures, and evaluate the optimal costs, potentials and locations for the development of renewable energy technologies (i.e., wind, solar, hydro, biomass and geothermal based technologies), as well as the development of biomass co-firing in existing coal plants. With the help of the model, an optimally adapted renewable energy mix - vis-à-vis the competing fossil fuel based resources and applicable policies in order to promote the development of those renewable energy technologies - will be identified. The development of the optimal renewable energy technologies is carried out with special focus on nature protection and cultural heritage areas, where feedstock (e.g., biomass

  15. Issues in Renewable Energy Education

    Thomas, Chacko; Jennings, Philip; Lloyd, Bob

    2008-01-01

    Renewable energy education is evolving rapidly in response to drivers such as oil depletion and global warming. There is a rapidly increasing level of student interest in these topics and a growing demand from industry and government for skilled personnel to develop sustainable energy systems and greenhouse solutions. Several Australian and New…

  16. Renewable energy atlas of the United States.

    Kuiper, J.A.; Hlava, K.Greenwood, H.; Carr, A. (Environmental Science Division)

    2012-05-01

    The Renewable Energy Atlas (Atlas) of the United States is a compilation of geospatial data focused on renewable energy resources, federal land ownership, and base map reference information. It is designed for the U.S. Department of Agriculture Forest Service (USFS) and other federal land management agencies to evaluate existing and proposed renewable energy projects. Much of the content of the Atlas was compiled at Argonne National Laboratory (Argonne) to support recent and current energy-related Environmental Impact Statements and studies, including the following projects: (1) West-wide Energy Corridor Programmatic Environmental Impact Statement (PEIS) (BLM 2008); (2) Draft PEIS for Solar Energy Development in Six Southwestern States (DOE/BLM 2010); (3) Supplement to the Draft PEIS for Solar Energy Development in Six Southwestern States (DOE/BLM 2011); (4) Upper Great Plains Wind Energy PEIS (WAPA/USFWS 2012, in progress); and (5) Energy Transport Corridors: The Potential Role of Federal Lands in States Identified by the Energy Policy Act of 2005, Section 368(b) (in progress). This report explains how to add the Atlas to your computer and install the associated software; describes each of the components of the Atlas; lists the Geographic Information System (GIS) database content and sources; and provides a brief introduction to the major renewable energy technologies.

  17. Renewable energy projects in Croatia: Present situation and future activities

    Granić Goran

    2007-01-01

    Full Text Available Renewable energy sources should play an important role in the promotion of numerous Croatian energy goals. The development of a successful sector of renewable could in the long run contribute to energy efficiency improvement, diversification of production and supply safety, domestic production and lesser imports of energy sources and significant reduction of the environmental influences. Targets and strategy of the implementation for every renewable energy resource depends on the specifics of the particular one, with general trends in the European Union of renewable resource ratio increase in the energy balance.

  18. Renewable Energy Country Profiles. Latin America

    NONE

    2012-06-15

    The IRENA Renewable Energy Country Profiles combine elements of IRENA analysis with the latest information available from a vast array of sources in order to give a brief yet comprehensive and up-to-date picture of the situation of renewable energy that includes energy supply, electrical capacity, energy access, policies, targets, investment climate, projects and endowment in renewable energy resources. Because of the different timelines of these sources, data presented here refer to years between 2009 and 2012. Data availability also differs from country to country, which makes comparison with a wider regional group possible only for the year for which figures are available for all the members of the group; while this may not be the most recent year, the differences between countries, regions and the world remain striking. The current country profiles are just a starting point; they will be extended upon with new indicators to make them more informative, and maintained as a live product on the IRENA website as a key source of information on renewable energy.

  19. Answers to energy crisis: energy efficiency, rational use of energy and renewable sources; Respostas para crise de energia eletrica: eficiencia energetica, uso racional de energia e fontes renovaveis

    Naturesa, Jim Silva; Mariotoni, Carlos Alberto [Universidade Estadual de Campinas (FEC/UNICAMP), SP (Brazil). Fac. de Engenharia Civil, Arquitetura e Urbanismo; Menezes, Taciana de V.; Perrone, Fernando Pinto Dias; Lepetitgaland, Karla Kwiatkowski [Centrais Eletricas Brasileiras S.A (ELETROBRAS), Rio de Janeiro, RJ (Brazil)

    2008-07-01

    This article presents the main advances in energy efficiency of Brazil, the results of the electrical energy alternatives sources incentive program until May of 2007, and examples of using energy in a reasonable way. In our point of view, these three initiatives are essentials in any energetic planning and must be considered with seriousness, mainly at moments of energy crisis. (author)

  20. Commercializing Emerging Renewable Energy: A Case Study

    Matti Lehtovaara

    2012-12-01

    Full Text Available A broad scientific consensus exists that the global climate is changing. The Earth’s surface temperature could rise significantly over the next few decades, leading to us witnessing an entirely new and unknown planet. Improved energy efficiency, decreasing use of fossil fuels and wide diffusion of various renewable energy sources are among the focal measures to limit global warming to a sustainable level. The objective of this study is to analyse how renewable energy, such as wind power and bioenergy, could be efficiently commercialized. The evaluation is based on a case study and expert analyses exploiting lateral and parallel thinking methods, and group decision support systems tools. The results reveal that some of the generated ideas are ready for implementation to commercialize renewable energy, whereas others still require technical and commercial development and improvements before maturity.

  1. Building Agro-Energy Supply Chains in the Basilicata Region: Technical and Economic Evaluation of Interchangeability between Fossil and Renewable Energy Sources

    Mauro Viccaro

    2013-10-01

    Full Text Available In this study, we present a model for the implementation of agro-energy chains based on the actual availability of forest biomass and the real demand for energy (heat in the area of the Basilicata region, Italy. The demand for energy has been estimated by drawing on the database of the Ministry of Economic Development or by calculating the Annual Energy Requirement (AER index, while for the estimate of the available forest biomass, reference was made to the public forest lands managed according to forestry management plans. The collected data were cross-checked with a view to detecting the technical and economic feasibility of district heating systems. The technical evaluation has mainly focused on the energetic and plant aspects, while the economic assessment was directed to defining the cost effectiveness criteria [Net Present Value (NPV, Internal Rate of Return (IRR, Payback Period] that can measure the profitability of the investment. In the economic evaluation we also included the national public incentives, designed to encourage the production of energy from renewable sources in compliance with the international agreements signed by Italy for the reduction of greenhouse gases (GHGs.

  2. Optimised Hybrid Integrated Renewable Energy System

    Dr. Arun Sandilya

    2012-10-01

    Full Text Available A hybrid integrated renewable energy system for an isolated small community, where grid extension is considered uneconomical. This paper proposed cost optimization through dynamic matching between load and proper equipment sizing. The Matlab based computer program developed for determining the most cost effective energy source to supply required load any given time of the day. Integrated system based on green energy utilization and rural electricity development.

  3. Portfolio Analysis of Renewable Energy Opportunities: Preprint

    Richards, Allison; Deprizio, Jodi; Anderson, Kate; DiOrio, Nick; Elgqvist, Emma; Simpkins, Travis

    2016-11-01

    Time Warner Cable (TWC), now Charter Communications (CC), partnered with the National Renewable Energy Laboratory (NREL) to assess the technical and economic potential for solar photovoltaic (PV), wind, and ground-source heat-pump systems at 696 TWC facilities. NREL identified 306 sites where adding a renewable energy system would provide cost savings over the project life-cycle. In general, the top sites have some combination of high electricity rates ($0.16-$0.29/kWh), significant state incentives, and favorable net-metering policies. If all projects were implemented via third-party power purchase agreements, TWC/CC would save $37 million over 25 years and meet 10.5% of their energy consumption with renewable energy. This paper describes the portfolio screening methodology used to identify and prioritize renewable energy opportunities across the TWC sites, as well as a summary of the potential cost savings that may be realized by implementing these projects. This may provide a template for other companies interested in identifying and prioritizing renewable energy opportunities across a large number of geographically dispersed sites. Following this initial portfolio analysis, NREL will be conducting in-depth analysis of project development opportunities at ten sites and evaluating off-grid solutions that may enable carbon emission reduction and grid independence at select facilities.

  4. Wind, biomass, hydrogen: renewable energies; Vent, biomasse, hydrogene: energies renouvelables

    Rakotosson, V.; Brousse, Th.; Guillemet, Ph.; Scudeller, Y.; Crosnier, O.; Dugas, R.; Favier, F.; Zhou, Y.; Taberna, P.M.; Simon, P.; Toupin, M.; Belanger, D.; Ngo, Ch.; Djamie, B.; Guyard, Ch.; Tamain, B.; Ruer, J.; Ungerer, Ph.; Bonal, J.; Flamant, G

    2007-06-15

    This press kit gathers a series of articles about renewable energies: the compared availabilities of renewable energy sources (comparison at a given time); offshore wind turbines (projects under development, cost optimisation); hydrogen for transports: present day situation (production, transport and storage, hydrogen conversion into mechanical energy, indirect use in biomass conversion); biomass: future carbon source (resource potential in France, pyrolysis and fermentation, development of biofuels and synthetic fuels, stakes for agriculture); beneficial standards for the heat pumps market (market organization and quality approach); collecting solar energy (solar furnaces and future solar power plants, hydrogen generation). (J.S.)

  5. Philippines: Small-scale renewable energy update

    NONE

    1997-12-01

    This paper gives an overview of the application of small scale renewable energy sources in the Philippines. Sources looked at include solar, biomass, micro-hydroelectric, mini-hydroelectric, wind, mini-geothermal, and hybrid. A small power utilities group is being spun off the major utility, to provide a structure for developing rural electrification programs. In some instances, private companies have stepped forward, avoiding what is perceived as overwhelming beaurocracy, and installed systems with private financing. The paper provides information on survey work which has been done on resources, and the status of cooperative programs to develop renewable systems in the nation.

  6. Renewable Energy and the need for local energy markets

    Hvelplund, Frede Kloster

    2003-01-01

    The paper argues that a new offensive green energy policy should be established in Denmark both securing public and political acceptance, and the establishment of local markets securing the technical integration of a large proportion of windpower and other fluctuating renewable energy sources...... into the energy system....

  7. Energy efficiency and renewable energy systems in Portugal and Brazil

    Østergaard, Poul Alberg; Soares, Isabel; Ferreira, Paula

    2014-01-01

    This article presents a review of the energy situation in Brazil and Portugal; two countries which are both characterised by high utilisation of renewable energy sources though with differences between them. The article also introduces contemporary energy research conducted on the two countries...

  8. Who Owns Renewable Energy Certificates?

    Holt, Edward; Wiser, Ryan; Bolinger, Mark

    2006-06-01

    Renewable energy certificates (RECs) are tradable instruments that convey the attributes of a renewable energy generator and the right to make certain claims about energy purchases. RECs first appeared in US markets in the late 1990s and are particularly important in states that accept or require them as evidence of compliance with renewables portfolio standards (RPS). The emergence of RECs as a tradable commodity has made utilities, generators, and regulators increasingly aware of the need to specify who owns the RECs in energy transactions. In voluntary transactions, most agree that the question of REC ownership can and should be negotiated privately between the buyer and the seller, and should be clearly established by contract. Claims about purchasing or using renewable energy should only be made if REC ownership can be documented. In many other cases, however, renewable energy transactions are either mandated or encouraged through state or federal policy. Because of the recent appearance of RECs, legislation and regulation mandating the purchase of renewable energy has sometimes been silent on the disposition of the RECs associated with that generation. Furthermore, some renewable energy contracts pre-date the existence of RECs, and therefore do not address REC ownership. In both of these instances, the issue of REC ownership must often be answered by legislative or regulatory authorities. The resulting uncertainty in REC ownership has hindered the development of robust REC markets and has, in some cases, led to contention between buyers and sellers of renewable generation. This article, which is based on a longer Berkeley Lab report, reviews federal and state efforts to clarify the ownership of RECs from Qualifying Facilities (QFs) that sell their generation under the Public Utility Regulatory Policies Act (PURPA) of 1978. The full report also addresses state efforts to clarify REC ownership in two other situations, customer-owned generation that benefits

  9. New Quebec renewable energy organization

    McArthur, D.; Salaff, S.

    1998-04-01

    The recent formation of the Quebec Association for the Production of Renewable Energy (l`Association quebecoise de la production d`energie renouvelable - AQPER) was announced. The Association is becoming the centre of the Quebec private electricity generation industry. By communicating the industry`s message to the public the organization gives much needed visibility to renewable resources, new forms of energy and sustainable development. The new group is an outgrowth of the former Quebec Association of Private Hydroelectricity Producers. In its new reincarnation, the organization represents all forms of renewables, small and medium hydro, wind, solar, forest and agricultural biomass and urban waste. With deregulation of the electricity market, specifically the creation of the Regie de l`energie` in Quebec, the wider role is a welcome boost for renewable energy development in the province. In one of its first actions the AQPER recommended that all hydroelectric sites up to 50 MW be reserved for development exclusively by the private sector, in conformity with the Quebec energy policy announced in 1996.

  10. Campus and community micro grids integration of building integrated photovoltaic renewable energy sources: Case study of Split 3 area, Croatia - part A

    Gašparović Goran

    2016-01-01

    Full Text Available Micro grids interconnect loads and distributed energy resources as a single controllable entity. New installations of renewable energy sources (RES in urban areas, such as Building Integrated Photovoltaic (BIPV, provide opportunities to increase energy independence and diversify energy sources in the energy system. This paper explores the integration of RES into two case study communities in an urban agglomeration to provide optimal conditions to meet a share of the electrical loads. Energy planning case studies for decentralized generation of renewable energy are conducted in H2RES energy planning software for hourly energy balances. The results indicate that BIPV and PV in the case study communities can cover about 17% of the recorded electrical demand of both areas. On a yearly basis, there will be a 0.025 GWh surplus of PV production with a maximum value of 1.25 MWh in one hour of operation unless grid storage is used. This amounts to a total investment cost of 13.36 million EUR. The results are useful for proposing future directions for the various case study communities targeting sustainable development.

  11. Renewable Energy Riding High

    2012-01-01

    China is putting greater emphasis on green energy as it tries to clean up industry and meet target for cuts in carbon emissions over the past two years, China has already leapfrogged competitors from Denmark, Germany, Spain and the United States to become the world's largest maker of wind turbines and solar panels. At the same time, the country is also taking steps to build more nuclear reactors and energy-efficient coal power plants.

  12. Renewable Energy Atlas of the United States

    Kuiper, J. [Environmental Science Division; Hlava, K. [Environmental Science Division; Greenwood, H. [Environmentall Science Division; Carr, A. [Environmental Science Division

    2013-12-13

    The Renewable Energy Atlas (Atlas) of the United States is a compilation of geospatial data focused on renewable energy resources, federal land ownership, and base map reference information. This report explains how to add the Atlas to your computer and install the associated software. The report also includes: A description of each of the components of the Atlas; Lists of the Geographic Information System (GIS) database content and sources; and A brief introduction to the major renewable energy technologies. The Atlas includes the following: A GIS database organized as a set of Environmental Systems Research Institute (ESRI) ArcGIS Personal GeoDatabases, and ESRI ArcReader and ArcGIS project files providing an interactive map visualization and analysis interface.

  13. Renewable energy resources; Erneuerbare Energien

    Lenz, Volker; Naumann, Karin [DBFZ Deutsches Biomasseforschungszentrum gemeinnuetzige GmbH, Leipzig (Germany); Kaltschmitt, Martin; Janczik, Sebastian [Technische Univ. Hamburg-Harburg (Germany). Inst. fuer Umwelttechnik und Energiewirtschaft

    2015-07-01

    Although the need to decarbonise our global economy and thus in particular the supply of energy to limit the global temperature increase is internationally undisputed the German politics in 2014 has significantly contributed less compared to previous years in order to attain this objective. The expansion of renewable energies in the electricity sector has decelerated significantly; and in the heating and mobility area no new impulses were set in relation to renewable energies. In addition, a dramatic fallen oil price makes it difficult to increase the use of renewable energy supply. Based on these deteriorated framework conditions compared to conditions of the previous years, the developments in Germany of 2014 are shown in the electricity, heat and transport sector in the field of renewable energy. For this purpose - in addition to a discussion of the current energy economic framework - for each option to use renewable energies the state and looming trends are analyzed. [German] Obwohl die Notwendigkeit zur Dekarbonisierung unserer globalen Wirtschaft und damit insbesondere der Energiebereitstellung zur Begrenzung des globalen Temperaturanstiegs international unstrittig ist, hat die deutsche Politik im Jahr 2014 im Vergleich zu den Vorjahren deutlich weniger zur Erreichung dieses Zieles beigetragen. Der Ausbau der Stromerzeugung aus erneuerbaren Energien im Stromsektor wurde deutlich verlangsamt; und im Waerme- und Mobilitaetsbereich wurden keine neuen Impulse in Bezug auf regenerative Energien gesetzt. Zusaetzlich erschwert ein drastisch gefallener Rohoelpreis die verstaerkte Nutzung des erneuerbaren Energieangebots. Ausgehend von diesen im Vergleich zu den Vorjahren verschlechterten Rahmenbedingungen werden nachfolgend die Entwicklungen in Deutschland des Jahres 2014 im Strom-, Waerme- und Transportsektor fuer den Bereich der erneuerbaren Energien aufgezeigt. Dazu werden - neben einer Diskussion des derzeitigen energiewirtschaftlichen Rahmens - fuer die

  14. Energy and durable development: the place of the renewable energies; Energie et developpement durable: la place des energies renouvelables

    NONE

    2001-07-01

    The 29 may 2000, took place at the UNESCO, a colloquium on the place of the renewable energies facing the economic development. This document presents the opening presentation of A. Antolini and L. Jospin and the colloquium papers and debates in the following four domains: the energy challenges of the durable development, the renewable energies sources facing the european directive, the thermal renewable energies (solar, geothermics and biomass) and the greenhouse effect, the world market of the renewable energies. (A.L.B.)

  15. Renewable Energy Devices and Systems

    Blaabjerg, Frede; Ionel, Dan M.

    2015-01-01

    applications are provided. Fuel cells, solar thermal, wave generators, and energy storage systems are also briefly presented and illustrated. Challenges and future trends for 2025 are summarized in a table for on-shore and off-shore wind energy, solar power, including photovoltaic and concentering, wave energy...... and the fundamental and increasing role of power electronics as an enabler for renewable energy integration, and for the future power system and smart grid. Recent examples of research and development, including new devices and system installations for utility power plants, as well for as residential and commercial......, fuel cells, and storage with batteries and hydrogen, respectively. Recommended further readings on topics of electric power engineering for renewable energy are included in a final section. This paper also represents an editorial introduction for two special issues of the Electric Power Component...

  16. Experiment on the use of a new source of renewable primary energy in Romania for rendering more efficient cogeneration

    Gheorghiu, Ioan Dan; Dragos, Gligor; Carabulea, A.; Popper, Laurentiu; Ungureanu, Ion

    2007-07-01

    The fuel renewing in the coal-running power plants, has been ordered by the competitive market mandatory prices of energy. The compliance with this restriction claims the decrease of fuels share to the energy cost from 75% to 35% by using a new type of fuel (corn) with a heat value ober 4,000 Kcal/Kg, compared with that of the coal, 1700 Kcal/Kg. This renewal applied to Romania, Oradea power plant has resulted in the following performances: reducing to half of the co-generation power costs, the thermal power produced from energy savings can heat, annually, 2.10{sup 6} apartments, the reconfiguration of human resource by the conversion of miners to corn-cultivating farmers, completely environment pollution diminishing the ash resulted from corn combustion, is a performing fertilizer for the cultivated corn. The technical-economic parameters, applied in this particular case to the experiment, show that the capital formation rate increases to 1.5 lei revenue/1 invested leu and the probable resources can be recovered, easily, from the annual resulted profits. (auth)

  17. Perspectives on renewable energy and Village Power

    Hoffman, A.R.

    1997-12-01

    The author provides a brief overview of the role the Department of Energy has been playing in the area of renewable energy sources and their applications at a village level. Energy demand is rising sharply, and shortages are becoming more acute. Developing countries will present a large demand, and market opportunity over the next 40 years. Environmental concerns are a factor in the choice for what sources to promote and develop. The author touches on the features of renewable sources which makes them attractive to DOE for some applications, and what the goals of the department are in supporting this technology. Examples of applications at the level of village power are presented for both the US and abroad.

  18. Energy efficiency, renewable energy and sustainable development

    Ervin, C.A.

    1994-12-31

    The Office of Energy Efficiency and Renewable Energy (EE) is part of the U.S. Department of Energy that is specifically charged with encouraging the more efficient use of energy resources, and the use of renewable energy resources - such as solar power, wind power, biomass energy and geothermal energy. In the past several years, EE has increased its emphasis on technology deployment through partnerships with states, local governments and private companies. Partnerships move new discoveries more quickly into the marketplace, where they can create jobs, prevent pollution, save resources, and produce many other benefits. The author then emphasizes the importance of this effort in a number of different sections of the paper: energy consumption pervades everything we do; U.S. energy imports are rising to record levels; transportation energy demand is increasing; U.S. energy use is increasing; population growth increases world energy demand; total costs of energy consumption aren`t always counted; world energy markets offer incredible potential; cost of renewables is decreasing; clean energy is essential to sustainable development; sustainable energy policy; sustainable energy initiatives: utilities, buildings, and transportation.

  19. Introduction to Renewable Energy Systems

    Ma, Ke; Yang, Yongheng; Blaabjerg, Frede

    2014-01-01

    In this chapter, the state-of-the-arts developments of renewable energy are reviewed in respect to the installed power and market share, where wind power and photovoltaic power generation are the main focuses due to the fast growing speed and large share of installed capacity. Some basic principles...

  20. Promotion of Renewable Energy in a Liberalised Energy Market

    Meyer, Niels I

    1998-01-01

    to higher efficiency and lower consumer prices. Most EU governments have accepted the new EU directive based on these commercial arguments. Denmark has, however, been in a different situation because its energy policy is based primarily on environmental considerations. Danish energy policy involves...... government promotion of energy conservation and of systems based on renewable energy sources. This type of policy may in some instanes conflict with the principles of the unregulated commercial market. The official Danish target is that 35% of energy demand should be covered by renewables by year 2030...

  1. The science of renewable energy

    Spellman, Frank R

    2012-01-01

    Post-Oil EnergyThe Gathering StormPeak OilA Malthusian Catastrophe?Weathering the StormAlternative and Renewable EnergyThe Bottom Line: The Need for InnovationDiscussion QuestionsReferences and Recommended ReadingEnergy BasicsEnergyPrinciples of Basic ElectricityBattery-Supplied ElectricityDC CircuitsOhm's LawElectric PowerElectric EnergySeries DC Circuit CharacteristicsParallel DC CircuitsSeries-Parallel CircuitsConductorsElectromagnetismAC TheoryCharacteristic Values of AC Voltage and CurrentResistance in AC CircuitsInductanceCapacitanceInductive and Capacitive ReactanceCapacitive Reactance

  2. Renewable Energy Essentials: Wind

    NONE

    2008-07-01

    Subjects for further research, specific to wind energy technology, include more refined resource assessment; materials with higher strength to mass ratios; advanced grid integration and power quality and control technologies; standardisation and certification; development of low-wind regime turbines; improved forecasting; increased fatigue resistance of major components such as gearboxes; better models for aerodynamics and aeroelasticity; generators based on superconductor technology; deep-offshore foundations; and high-altitude 'kite' concepts.

  3. Analysis of the flexible support mechanisms in the Directive on the promotion of the use of energy from renewable sources. Final report 8th January 2010

    Ruokonen, J.; Sinnemaa, M.A.; Magnusson, R.; Gautesen, K.; Seppaenen, S.; Opsal, O.

    2010-07-01

    The Nordic countries have a long history in co-operation and a common electricity market. The long-term objective of Nordic countries is to promote an efficient, competitive, secure and sustainable energy supply. The EU countries have set a binding target to increase the share of renewable energy to 20% by 2020. The European Parliament approved a legislative resolution on December 17th 2008 on the proposal for a Directive on the promotion of the use of energy from renewable source ('The Directive'). This Directive become part of the European Community legislation in 2009. The Directive sets national targets for renewable energy, but it also provides various flexibility mechanisms that enable co-operation between countries in reaching the national targets. It is however still not clear how these flexible mechanisms should be used, nor the consequences on the electricity market and renewable energy sources. The objective of this project is to evaluate the usefulness and consequences of utilising the Flexible Mechanisms described in the Articles 6-11 ('Flex-Mex') of the Directive in Nordic Countries. Moreover, the objective is to provide basis for conclusions and political recommendations on whether and how to cooperate and move forward in this area. In addition to basic principles of the flexible mechanisms, the project concentrates on analysing the arrangements needed between the Nordic Countries to utilise the flexible mechanisms and analysis of benefits and problems of using Mechanisms. The report is divided five sections. Chapter 2 introduced the RES directive and Flexible Mechanisms. In chapter 3, lesson learnt from other markets are used as starting point in drawing possible frameworks for Nordic countries. Chapter 4 summarizes presents outcome of various co-operation scenarios and their benefits. In Chapter 5 some selected topics are discussed from RES Flex-Mex point of view. Chapter 6 provides conclusions and recommendations. (Author)

  4. Geothermal Energy : An Alternative Source of Energy

    R R Shah

    2014-04-01

    Full Text Available Nowadays renewable sources are preferred over the non renewable source to generate the energy. The rapid rates of exhausting non-renewable resources have completed us to look out for new avenues in energy generation. According to global energy scenario, developed countries are adopting renewable resources as major source of energy. Geothermal energy originates from the original formation of the planet, from radioactive decay of minerals, and from solar energy absorbed at the surface. Geothermal energy is derived from the hot interior of the earth. The earth is a reservoir of heat energy, most of which is buried and is observed during episodes of volcanic eruption at the surfaces. Geothermal is one of the most promising renewable source of energy which is plentiful, eco-friendly, reliable and clean source of energy available in earth crust. In our country there is wide scope for the utilization of geothermal energy with proper strategically approach to meet the energy requirement. The future prospects of this heat energy as a sustainable source of renewable energy are indeed promising. Today India is the fifth largest consumer of electricity and by 2030 it will become third largest overtaking Japan and Russia according to statistical data available by Energy Planning Commission, Government of India.

  5. Customer choice and renewable energy

    Schaefer, D.

    1996-12-31

    Opinions on political and social factors affecting the U.S. market for wind power are presented in this paper. The position of and activities taken by U.S. Congressman Dan Schaefer as Chairman of the House Energy and Power Subcommittee are outlined. Background information used as input to subcommittee hearings is summarized. The formation and activities of the House Renewable Energy Caucus are very briefly described.

  6. Alaska's renewable energy potential.

    2009-02-01

    This paper delivers a brief survey of renewable energy technologies applicable to Alaska's climate, latitude, geography, and geology. We first identify Alaska's natural renewable energy resources and which renewable energy technologies would be most productive. e survey the current state of renewable energy technologies and research efforts within the U.S. and, where appropriate, internationally. We also present information on the current state of Alaska's renewable energy assets, incentives, and commercial enterprises. Finally, we escribe places where research efforts at Sandia National Laboratories could assist the state of Alaska with its renewable energy technology investment efforts.

  7. Renewable energy guide

    NONE

    2004-07-01

    This catalogue contains a selection of innovative after-market energy products from leading manufacturers. The catalogue was created by the Victoria-based company SPS Solutions, whose mission is to provide alternate energy products and services that deliver electricity wherever it is needed. A definition of electricity was presented, including details of amp and watt hours, inverters and the advantages of higher voltages. An appliance power ratings guide was provided, as well as details about solar charging for recreational vehicles with technical specifications. Solar power systems for homes, marine power systems as well as grid tie systems were described. Industrial power systems solutions were also presented. Information on battery chargers, batteries and power boards was provided, as well as information on other accessories. Wiring and distribution details were reviewed. Outdoor lighting systems were outlined as well as various water pumping, ventilation and refrigeration solutions. Information on composting toilets was presented. A list of books was presented for further information on solar power. tabs., figs.

  8. Energy efficiency and renewable energy systems in Portugal and Brazil

    Poul Alberg Østergaard

    2014-06-01

    Full Text Available This article presents a review of the energy situation in Brazil and Portugal; two countries which are both characterised by high utilisation of renewable energy sources though with differences between them. The article also introduces contemporary energy research conducted on the two countries and presented at The 1st International Congress on Energy & Environment ranging from electricity end-use analyses, electricity production analyses to socio-economic assessment and large-scale energy scenarios.

  9. Critical analysis of pyrolysis process with cellulosic based municipal waste as renewable source in energy and technical perspective.

    Agarwal, Manu; Tardio, James; Venkata Mohan, S

    2013-11-01

    To understand the potential of cellulosic based municipal waste as a renewable feed-stock, application of pyrolysis by biorefinery approach was comprehensively studied for its practicable application towards technical and environmental viability in Indian context. In India, where the energy requirements are high, the pyrolysis of the cellulosic waste shows numerous advantages for its applicability as a potential waste-to-energy technology. The multiple energy outputs of the process viz., bio-gas, bio-oil and bio-char can serve the two major energy sectors, viz., electricity and transportation. The process suits best for high bio-gas and electrical energy production when energy input is satisfied from bio-char in form of steam (scheme-1). The bio-gas generated through the process shows its direct utility as a transportation fuel while the bio-oil produced can serve as fuel or raw material to chemical synthesis. On a commercial scale the process is a potent technology towards sustainable development. The process is self-sustained when operated on a continuous mode.

  10. 2005: risks and opportunities for the renewable energies; 2005: risques et opportunites pour les energies renouvelables

    NONE

    2005-02-15

    This press conference takes stock on the renewable energies in the world at the date of the first of february 2005. A first part presents the renewable energies activities in the world, and then more specially in France, the 2001 directive on the development of the electric power from renewable sources, the controversy around the public service charges due to the renewable energies and the fiscal advantages proposed. The second part details each renewable energies sources situation, cost, capacity: photovoltaic, wind energy, hydroelectricity, thermal solar energy, wood energy, biofuels and heat pumps. (A.L.B.)

  11. Renewable Energy Opportunties at Dugway Proving Ground, Utah

    Orrell, Alice C.; Kora, Angela R.; Russo, Bryan J.; Horner, Jacob A.; Williamson, Jennifer L.; Weimar, Mark R.; Gorrissen, Willy J.; Nesse, Ronald J.; Dixon, Douglas R.

    2010-05-31

    This document provides an overview of renewable resource potential at Dugway Proving Ground, based primarily upon analysis of secondary data sources supplemented with limited on-site evaluations. This effort focuses on grid-connected generation of electricity from renewable energy sources and ground source heat pumps (GSHPs). The effort was funded by the U.S. Army Installation Management Command (IMCOM) as follow-on to the 2005 Department of Defense (DoD) Renewables Assessment.

  12. Polymer biocomposites with renewable sources

    S. Kuciel

    2010-07-01

    Full Text Available Nowadays production of natural biodegradable polymer composites is an important research topic on the stage of renewable sourcesimplementation instead of petrochemical sources. In this work, possibilities of processing biocomposites on the base on different types of biopolymers – polylactide (PLA, thermoplastic starch (TPS, polyhydroxybutyrate (PHB, cellulose acetate (CA - filled with natural fibers such as wood, kenaf, horse hair and nettle are presented. Large variety of natural fibers and their developed surface which increases adhesion to matrix makes them an attractive filler material. The fibers serve as reinforcement by giving strength and stiffness to the structure while the polymer matrix holds the fibers in place so that suitable structural composites can be made. Main physic-mechanical properties of natural fibers and biopolymers are presented. Modulus of elasticity and tensile strength increased with rising content of natural fibers in composite. The results show that biocomposites based on starch or PHB filled with kenaf fibers has the best mechanical properties. Modulus of elasticity achieves 10-12 GPa and tensile strength 50 MPa. This property can be interesting for packaging especially for fresh food like fruits or vegetables and for technical products with short-time life cycles. In future prospects, biocomposites based on biopolymers with a long time of decomposition can be interesting alternative as a construction material in automotive sectors.

  13. Achieving the Renewable Energy Target for Jamaica

    Abdullahi Olabode ABDULKADRI

    2014-05-01

    Full Text Available ieving the Renewable Energy Target for Jamaica Abstract: The high cost of energy in Jamaica, one of the highest in the Caribbean region, is usually cited as a hindrance to industrial development and efficiency, especially in the manufacturing sector. High energy cost is also considered to be a national energy security issue and the government is taking steps to ensure adequate supply of energy at affordable prices. In the current National Development Plan, the government has set a target for renewable energy sources to supply 20% of the country's energy need by the year 2030. Using a linear programing model of energy planning, we examine how realistically this target could be achieved. Our findings indicate that the 20% renewable energy target is technically achievable with the optimal plan showing a mixture of wind power, hydropower and bagasse power but no solar power. However, when the timeline for investment in new generating capacities that will ensure the attainment of the target is considered, it becomes highly improbable that the target will be met. This study fills the gap that exists in evidence-based analysis of energy policy in Jamaica.

  14. Valuing the attributes of renewable energy investments

    Bergmann, Ariel [Economics Department, University of Glasgow, Adam Smith Building, Glasgow G12 8RT (United Kingdom); Hanley, Nick; Wright, Robert [Economics Department, University of Stirling, Stirling FK9 4LA, Scotland (United Kingdom)

    2006-06-15

    Increasing the proportion of power derived from renewable energy sources is becoming an increasingly important part of many countries' strategies to achieve reductions in greenhouse gas emissions. However, renewable energy investments can often have external costs and benefits, which need to be taken into account if socially optimal investments are to be made. This paper attempts to estimate the magnitude of these external costs and benefits for the case of renewable technologies in Scotland, a country which has set particularly ambitious targets for expanding renewable energy. The external effects we consider are those on landscape quality, wildlife and air quality. We also consider the welfare implications of different investment strategies for employment and electricity prices. The methodology used to do this is the choice experiment technique. Renewable technologies considered include hydro, on-shore and off-shore wind power and biomass. Welfare changes for different combinations of impacts associated with different investment strategies are estimated. We also test for differences in preferences towards these impacts between urban and rural communities, and between high- and low-income households. (author)

  15. Renewable energies in France 1970-2002; Energies renouvelables en France 1970-2002

    NONE

    2004-02-01

    The energy observatory presents in this 2004 edition today data concerning the thermal renewable energies and the new energetic accounting method for the electric renewable energies. The following energy sources are concerned: hydroelectric power, wind power, photovoltaic, geothermal energy, biomass, wood fuels, domestic wastes, heat pumps, biogas, the thermal solar and biofuels. The energy production by renewable sources from 1970 to 2002, is also provided. (A.L.B.)

  16. Efficient Algorithms for Renewable Energy Allocation to Delay Tolerant Consumers

    Neely, Michael J; Dimakis, Alexandros G

    2010-01-01

    We investigate the problem of allocating energy from renewable sources to flexible consumers in electricity markets. We assume there is a renewable energy supplier that provides energy according to a time-varying (and possibly unpredictable) supply process. The plant must serve consumers within a specified delay window, and incurs a cost of drawing energy from other (possibly non-renewable) sources if its own supply is not sufficient to meet the deadlines. We formulate two stochastic optimization problems: The first seeks to minimize the time average cost of using the other sources (and hence strives for the most efficient utilization of the renewable source). The second allows the renewable source to dynamically set a price for its service, and seeks to maximize the resulting time average profit. These problems are solved via the Lyapunov optimization technique. Our resulting algorithms do not require knowledge of the statistics of the time-varying supply and demand processes and are robust to arbitrary samp...

  17. Impacts of compressed air energy storage plant on an electricity market with a large renewable energy portfolio

    Foley, Aoife; Diaz Lobera, Irina

    2013-01-01

    Renewable energy generation is expected to continue to increase globally due to renewable energy targets and obligations to reduce greenhouse gas emissions. Some renewable energy sources are variable power sources, for example wind, wave and solar. Energy storage technologies can manage the issues associated with variable renewable generation and align non-dispatchable renewable energy generation with load demands. Energy storage technologies can play different roles in each of the step of th...

  18. Renewable energy for rural electrification

    Strebkov, D. [All Russian Research Institute for Electrification of the Agriculture, Moscow (Russian Federation); Bezrukich, P. [Ministry for Fuel and Energy of Russian Federation, Moscow (Russian Federation); Kozlov, V. [Intersolarcenter Association, Moscow (Russian Federation)

    1997-12-31

    In spite of quite good centralized power supply system, rural electrification level across Russia vary widely: in some regions there are densely populated communities which lack power, while in the other the most pressing need is to electrify dispersed, isolated villages or homes. The main objective of the Russian project `Renewable energy for rural electrification` is the elaboration and application of new technologies of rural electrification in order to ensure the sustainable development of unelectrified areas of the Russia. The long-term objective of the project are: to improve the living standards of people in rural areas, who lack centralized energy supply systems, by introducing a new system for generation, transmission and distribution of electric power on the base of renewable energy systems; to provide a reliable cost-effective electric service for electrified and uncertified communities; to reduce the consumption of organic fuel in power generation systems; to support the military industry in converting their activity into the renewable energy sector; and to protect the environment

  19. German legislation for promotion of renewable energies 2012. Act on feed-in and guaranteed pricing of electricity from renewable energy sources (EEG). Commentary. 6. new rev. and enl. ed.; Erneuerbare-Energien-Gesetz 2012. Gesetz fuer den Vorrang Erneuerbarer Energien (EEG). Kommentar

    Salje, Peter [Hannover Univ. (Germany). Lehrstuhl fuer Zivilrecht und Recht der Wirtschaft

    2012-07-01

    Only three years after the enactment of the 2009 amendment to the Renewable Energy Law (EEG) it has become necessary to publish this revised edition of the standard legal commentary on electricity feed-in from renewable energy sources. Taking effect on 1 January 2012 the Renewable Energy Law has once again been substantially amended. With its 85 articles and 5 annexes the law now contains many more normative rules than before. 19 single normative rules have been added, while more than half of those contained in the 2009 EEG have been revised, for some part extensively.

  20. Renewable Energy Park - Preliminary Feasibility & Engineering Report

    Ariwite, Roderick [Fallon Paiute Shoshone Tribe, NV (United States)

    2015-07-31

    This "Renewable Energy Park - Preliminary Feasibility & Engineering Report" seeks to provide an overall assessment and review of renewable energy development opportunities on the Fallon Indian Reservation and Colony Lands.

  1. Contribution of renewable energy sources to electricity production in the autonomous community of Navarre (Spain): A review

    Lopez Gonzalez, Luis Maria; Lopez Ochoa, Luis Maria [Universidad de La Rioja, Escuela Tecnica Superior de Ingenieria Industrial, Grupo de Termodinamica Aplicada, Energia y Construccion, Calle Luis de Ulloa 20, 26004 Logrono (La Rioja) (Spain); Sala Lizarraga, Jose Maria [Universidad del Pais Vasco, E.T.S. de Ingenieros Industriales de Bilbao (Spain); Miguez Tabares, Jose Luis [Universidad de Vigo, E.T.S. de Ingenieros Industriales de Vigo (Spain)

    2007-10-15

    Economic development in recent decades has been characterised by the increased use of fossil fuels. Clearly, a significant amount of this energy does not fall in line with the principles of sustainable development, either because of its contaminating effect or because of its non-renewable nature. Today, Navarre generates around 60% of its electricity requirements by means of wind power and small hydropower stations. On the downside, Navarre's energy consumption is above average for the European Union and its economy is growing at an annual rate in excess of 5%. The Castejon (800 MW) thermal power stations, scheduled for enlargement, generate more energy than Navarre's entire wind power sector. In terms of hydroelectric power, there are around 200 small hydropower plants in operation. In addition, the Autonomous Community of Navarre has installed a biomass plant in Sangueesa, with an installed output of 25 MW, annually generating 200 GWh through the combustion of 160,000 t of cereal straw. In addition, Navarre, specifically Tudela, is the site of the largest solar energy plant in Spain, producing 1.2 MWp, following its connection to the grid at the beginning of the year. Two thirds of the 10,080 panels are arranged in a central body and the remaining third are panels pertaining to different technologists and technologies involved in research and development. (author)

  2. Renewable energy and climate change

    Quaschning, Volker

    2010-01-01

    This dazzling introductory textbook encompasses the full range of today's important renewable energy technologies. Solar thermal, photovoltaic, wind, hydro, biomass and geothermal energy receive balanced treatment with one exciting and informative chapter devoted to each. As well as a complete overview of these state-of-the-art technologies, the chapters provide: clear analysis on their development potentials; an evaluation of the economic aspects involved; concrete guidance for practical implementation; how to reduce your own energy waste. If we do not act now to stop climate change, the cons.

  3. Renewable energy costs, potentials, barriers: Conceptual issues

    Verbruggen, Aviel, E-mail: aviel.verbruggen@ua.ac.b [University of Antwerp (Belgium); Fischedick, Manfred [Wuppertal Institute for Climate, Environment, Energy (Germany); Moomaw, William [Tufts University, Center for International Environment and Resource Policy (United States); Weir, Tony [University of the South Pacific, Fiji Islands (Fiji); Nadai, Alain [Centre International de Recherche sur nvironnement et le Developpement CIRED (France); Nilsson, Lars J. [University of Lund (Sweden); Nyboer, John [Simon Fraser University, School of Resource and Environmental Management (Canada); Sathaye, Jayant [Lawrence Berkeley Laboratory (United States)

    2010-02-15

    Renewable energy can become the major energy supply option in low-carbon energy economies. Disruptive transformations in all energy systems are necessary for tapping widely available renewable energy resources. Organizing the energy transition from non-sustainable to renewable energy is often described as the major challenge of the first half of the 21st century. Technological innovation, the economy (costs and prices) and policies have to be aligned to achieve full renewable energy potentials, and barriers impeding that growth need to be removed. These issues are also covered by IPCC's special report on renewable energy and climate change to be completed in 2010. This article focuses on the interrelations among the drivers. It clarifies definitions of costs and prices, and of barriers. After reviewing how the third and fourth assessment reports of IPCC cover mitigation potentials and commenting on definitions of renewable energy potentials in the literature, we propose a consistent set of potentials of renewable energy supplies.

  4. Preliminary investigation of biogenic gas production in Indonesian low rank coals and implications for a renewable energy source

    Susilawati, Rita; Papendick, Sam L.; Gilcrease, Patrick C.; Esterle, Joan S.; Golding, Suzanne D.; Mares, Tennille E.

    2013-11-01

    Indonesia has abundant coal resources at depths suitable to contain substantial volumes of naturally occurring methane, which are currently being explored. Most Indonesian coals are thermally immature, but are composed of hydrogen-rich organic components that are presumed to make them excellent substrates for biogenic methane production. Gas isotope results from pilot wells in South Sumatra, reported in this study, are interpreted to indicate biogenic origins for the methane. Corresponding formation water samples were collected and incubated, and show the presence of indigenous microbial communities capable of producing methane from Indonesian and Australian coal. Although these results are only preliminary, they are promising and support the possibility of Indonesia developing bio renewable energy from coal seams.

  5. Renewable Energy Opportunities Saginaw Chippewa Indian Tribe

    Saginaw Chippewa Indian Tribe Planning Department; Smiley, Steve; Bennett, Keith, DOE Project Officer

    2008-10-22

    The Saginaw Chippewa Indian Tribe has a vision to become self-sufficient in its energy needs and to maintain its culture and protect Mother Earth with respect and honor for the next seven generations. To achieve this vision, green energy sources such as solar, wind and biomass energy are the best energy paths to travel. In this feasibility study the Tribe has analyzed and provided data on the nature of the renewable resources available to the Tribe and the costs of implementing these technologies.

  6. Energy Transition to Renewables: Problems

    2014-01-01

    What will come first ? non-acceptable global warming or extinction of oil reserves? Both processes can bring substantial costs to the mankind, but their order has important economic implications. The answer to this question will either lower oil price in the long run or will lead to its further rise. It is very important for Russian economy. From the global perspective, both dangers should be taken into account, and transition to renewable energies is the only remedy for both. However, the op...

  7. Kasseler symposium on energy-related system engineering: renewable energy sources and rational energy use. Proceedings '98; Kasseler Symposium Energie-Systemtechnik: Erneuerbare Energien und Rationelle Energieverwendung. Tagungsband '98

    Schwarz, R. [comp.

    1999-07-01

    The ISET ended the 10th anniversary year since its foundation in 1998 with already the third Kassel symposium on energy-related system engineering: renewable energy sources and rational energy use. Covering several special subjects talks were given about the topics modelling and simulation in the fields of wind energy, photovoltaic systems, hybrid systems or sewage water treatment. The keen interest of the participants shows the importance that modelling of conditions or processes has gained in the meantime in the field of system engineering of renewable energy sources. The core of each simulation is the integration of differential equations, which describe the system. Properties of the system can be easily varied and affects on the overall system can be easily investigated. Critical conditions can be discovered and be taken into consideration at the hardware engineering. Mistakes in terms of component design can be avoided and engineering cost can be reduced considerably. The present conference book gives an ideal overview of the topics discussed during the symposium. (orig.) [German] Sein Jubilaeumsjahr zum zehnjaehrigen Bestehen beschloss das ISET 1998 mit dem nun bereits 3. Kasseler Symposium Energie-Systemtechnik - Erneuerbare Energien und Rationelle Energieverwendung. Fachgebietsuebergreifend wurde zu den Themen Modellbildung und Simulation in Bereichen wie Windenergie, Photovoltaik, Hybridsysteme oder Abwasserbehandlung referiert. Das rege Interesse der Teilnehmer unterstreicht die Bedeutung, die die Modellierung von Zustaenden oder Prozessen in der Systementwicklung bei den erneuerbaren Energien inzwischen gewonnen hat. Der Kern einer jeden Simulation ist die Integration der systembeschreibenden Differentialgleichungen. Eigenschaften des Systems koennen in einfacher Weise variiert und die Auswirkungen auf das Gesamtsystem untersucht werden. Kritische Zustaende koennen entdeckt und in der Entwicklung der Hardware entsprechend beruecksichtigt werden. Fehler

  8. Renewable energy and the need for local energy markets

    Hvelplund, Frede

    2006-01-01

    green energy policy should be introduced in order to secure both public and political acceptance. Local markets should be established in order to secure the technical integration of a large proportion of wind power and other fluctuating renewable energy sources into the energy system....... green energy technology cluster was established. During the second phase, new difficulties and challenges have arisen, both with regard to local public acceptance and the need for integrating an increasing percentage of fluctuating energy sources into the energy system. In this Phase 2, a new offensive...

  9. Renewable energy annual 1997. Volume 1

    NONE

    1998-02-01

    This report presents information on renewable energy consumption, capacity, and electricity generation data, as well as data on US solar thermal and photovoltaic collector manufacturing activities. The renewable energy resources included in the report are: biomass (wood, ethanol, and biodiesel); municipal solid waste; geothermal; wind; and solar (solar thermal and photovoltaic). The first chapter of the report provides an overview of renewable energy use and capability from 1992 through 1996. It contains renewable energy consumption, capacity, and electricity generation data, as well as descriptive text. Chapter 2 presents current (through 1996) information on the US solar energy industry. A glossary of renewable energy terms is also included. 15 figs., 42 tabs.

  10. Renewable energy in Thailand; Renewable Energy in Thailand

    Morstadt, Till [Lorenz and Partners, Bangkok (Thailand)

    2016-01-15

    The following article should represent an overview of the situation of the energy sector in Thailand (I), in particular is referred to the recent Energy Plan 2036 (II.). The focus of this plan - and, accordingly, this paper - is on renewable energy. In addition to the general importance of renewable energy for Thailand the article should deal in detail with the various funding opportunities that the Thai government makes available to investors (III). In addition, under IV. the foreign Investors restrictions in force and possible exemptions thereof are discussed. Finally, it should, as far as possible, a view be given to future developments (V.). [German] Der nachfolgende Beitrag soll einen Ueberblick ueber die Situation des Energiesektors in Thailand darstellen (1.), wobei insbesondere Bezug genommen wird auf den kuerzlich veroeffentlichten Energieplan 2036 (II.). Der Fokus dieses Planes - und dementsprechend dieses Beitrages - liegt auf erneuerbaren Energien. Neben der allgemeinen Bedeutung erneuerbarer Energien fuer Thailand soll detailliert auf die einzelnen Foerdermoeglichkeiten eingegangen werden, die die thailaendische Regierung Investoren zur Verfuegung stellt (111.). Zudem werden unter IV. die fuer auslaendische Investoren geltenden Beschraenkungen und moegliche Befreiungen hiervon eroertert. Abschliessend soll, soweit moeglich, ein Ausblick auf zukuenftige.Entwicklungen gegeben werden (V.).

  11. Distribution effects of the renewable energies act; Verteilungswirkungen des EEG

    Bardt, Hubertus; Niehues, Judith [Institut der deutschen Wirtschaft Koeln, Koeln (Germany)

    2013-09-15

    The Renewal Energies Act has so far been one of the cornerstones of the energy revolution. As a result of the Act the production of electricity from renewable sources has been considerably increased. As the most expensive forms of renewable energies have grown fastest, average costs have not shrunk but have risen significantly. The ongoing growth led to increasing subsidies for renewable energies and growing costs for electricity consumers in business and private households. It would be insufficient to look at absolute cost developments only, as distribution effects may be critical. As electricity consumption only slightly depends on household income, higher income leads to lower significance of electricity costs. Therefore, low income households bear a relatively higher burden of costs for renewable energies. Furthermore, wealthy households could benefit from the subsidies as they can invest in renewable energy systems.

  12. 77 FR 64112 - Office of Energy Efficiency and Renewable Energy

    2012-10-18

    ... of Energy Efficiency and Renewable Energy Nationwide Categorical Waivers of the American Recovery and Reinvestment Act AGENCY: Office of Energy Efficiency and Renewable Energy, U.S. Department of Energy (DOE... CONTACT: Christine Platt-Patrick, Office of Energy Efficiency and Renewable Energy (EERE), (202)...

  13. RECENT CHANGES IN THE EU RENEWABLE ENERGY MARKET REGULATIONS

    N. Danylova

    2014-09-01

    Full Text Available This paper studies recent trends of the world energy supply. Factors affecting changes in the state policy of the European energy strategy are identified. The role of renewable energy sources in solving energy problems is revealed. The mechanism of the EU renewable market development is illustrated. The main changes in the dynamics and structure of energy consumption are identified. The major participants in the modern European renewable energy market are demonstrated. A set of measures to build a new energy policy in EU is formed.

  14. Models for the promotion of renewable energy sources. A legal comparing investigation of models for the promotion of renewable enegy sources by the example of Poland and Germany; Modelle zur Foerderung erneuerbarer Energietraeger. Eine rechtsvergleichende Untersuchung von Modellen zur Foerderung erneuerbarer Energietraeger am Beispiel Polens und Deutschlands

    Michalowska, Dorota

    2008-04-08

    Energy sources such as coal, natural gas, petroleum, and nuclear fission have long been established on the marketplace and considered competitive. However, a comprehensive restructuring of energy generation is necessary, as conventional energy generation pollutes the environment. Therefore environmentally friendly energy sources, such as solar, wind or water power need to be promoted. However, regenerative energy sources are still not capable of competing with conventional energy. Marketability of renewable energy sources can only be achieved through government-sponsored promotion and regulation. Such measures include fixed price and fixed quantity models with green certificates. The support schemes for renewable energy sources are characterized by their wide-ranging adaptability. The various elements of a scheme must be adapted to a given country's set goals and specific circumstances. There is no universally applicable model. Based on given goals and opportunities, every domestic legislator faces the challenge of choosing the best scheme or developing a mixed model that combines various elements. The aim of this study is to provide a legal analysis of regulations concerning the support schemes for renewable energy sources within the framework of EU and international law. Furthermore, the study aimed at comparing support schemes implemented in Poland and Germany. In the EU, the electricity directive from 1996 and 2003, the directive on the promotion of electricity from renewable energy sources from 2003 and 2008, non-binding documents, such as the ''green and white book'', as well as the ''ALTENER'' program, successfully contributed to establishing the topic of renewable energies. Regarding international law, it is primarily the Kyoto protocol that has to be mentioned as a basis for the promotion of renewable energy sources. Poland introduced a fixed quantity model with green certificates. Separated reimbursements for

  15. powerado-plus. Promotion of education, instruction and training for renewable energy sources; powerado-plus. Foerderung der Bildung, der Aus- und Weiterbildung fuer erneuerbare Energien

    Scharp, Michael (ed.)

    2012-05-15

    The research project 'World of Renewables: powerado' explores the effective communication to promote renewable energies in children, adolescents, teachers and multipliers. In several modules, materials and training approaches for different age groups and audiences are developed. Fundamental studies are carried out. Based on these fundamental studies, successful communication strategies of renewable energy are performed. The contribution under consideration reports on the main findings from the period 2009 to 2012.

  16. German legislation for promotion of renewable energies 2014. Act on feed-in and guaranteed pricing of electricity from renewable energy sources (EEG). Commentary. 7. new rev. ed.; Erneuerbare-Energien-Gesetz 2014. Gesetz fuer den Ausbau erneuerbarer Energien. Kommentar

    Salje, Peter [Hannover Univ. (Germany). Lehrstuhl fuer Zivilrecht und Recht der Wirtschaft

    2015-07-01

    The EEG is continuously subjected to changes and the permanent center of political discussions. Therefore now already the 7th edition of the EEG comment of the science and practice well recognized and highly recognized author Prof. Dr. Dr. Peter Salje appear. The revision includes, inter alia, further evaluation of the law of electric power produced from renewable energy sources from the EEG of 2012 and the regulations made there under (including Biomass and AusglMechV). The changes associated with the so-called Photovoltaic amendment dated August 2012 and the recent case law since the publication of the previous edition handed down are considered. In particular, the incorporation of the full basic EEG reform in 2014 guarantees the highest topicality. [German] Das EEG ist fortlaufend Neuerungen unterworfen und im staendigen Mittelpunkt der politischen Diskussionen. In nunmehr bereits 7. Auflage erscheint daher der EEG-Kommentar von dem in Wissenschaft und Praxis bestens ausgewiesenen und hoechst anerkannten Autor Prof. Dr. Dr. Peter Salje. Die Neubearbeitung umfasst u.a. die weitere Auswertung des Rechts der Stromerzeugung aus Erneuerbaren Energien aus dem EEG 2012 und den dazu ergangenen Verordnungen (u.a. BiomasseV und AusglMechV). Die mit der sog. Photovoltaik-Novelle vom August 2012 einhergehenden Aenderungen sowie die seit Erscheinen der Vorauflage ergangene Rechtsprechung werden beruecksichtigt. Insbesondere die vollumfaengliche Einarbeitung der grundlegenden EEG-Reform 2014 garantiert hoechste Aktualitaet.

  17. Microalgae as Sustainable Renewable Energy Feedstock for Biofuel Production

    2015-01-01

    The world energy crisis and increased greenhouse gas emissions have driven the search for alternative and environmentally friendly renewable energy sources. According to life cycle analysis, microalgae biofuel is identified as one of the major renewable energy sources for sustainable development, with potential to replace the fossil-based fuels. Microalgae biofuel was devoid of the major drawbacks associated with oil crops and lignocelluloses-based biofuels. Algae-based biofuels are technical...

  18. Renewable Energy: Ready to Meet Its Promise?

    Bull, S. R.; Billman, L. L.

    1999-01-01

    This paper will briefly review the technical status, cost, and applications of major renewable energy technologies in 1998, and also discuss some of the socioeconomic impacts of wide-scale adoption of renewables.

  19. Synergies between renewable energy and fresh water production. Scoping study

    Geurts, F.; Noothout, P.; Schaap, A. [Ecofys Netherlands, Utrecht (Netherlands)

    2011-02-15

    The IEA Implementing Agreement for Renewable Energy Technology Deployment (IEA-RETD) investigated the opportunities for coupling renewable energy systems with fresh water supply systems. The four main conclusions of the scoping study, carried out by Ecofys, are: (1) Fresh water production based on desalination technologies provide most options for synergies with renewable energy production; (2) Linking desalination to renewable sources is currently not economically viable; (3) There is a large potential for small scale (decentralised) desalination plants; (4) Current commercially-sized desalination technologies are in need of a constant operation point. Reverse osmosis and thermal membrane technologies might give future synergies as deferrable load.

  20. 78 FR 20896 - Renewable Energy and Energy Efficiency Advisory Committee

    2013-04-08

    ... International Trade Administration Renewable Energy and Energy Efficiency Advisory Committee AGENCY... Renewable Energy and Energy Efficiency Advisory Committee (RE&EEAC) will hold a meeting on May 1, 2013. The... the international competitiveness of the U.S. renewable energy and energy efficiency industries....

  1. 78 FR 69370 - Renewable Energy and Energy Efficiency Advisory Committee

    2013-11-19

    ... International Trade Administration Renewable Energy and Energy Efficiency Advisory Committee AGENCY... Renewable Energy and Energy Efficiency Advisory Committee (RE&EEAC) will hold a meeting on December 3, 2013... the international competitiveness of the U.S. renewable energy and energy efficiency industries....

  2. 78 FR 78340 - Renewable Energy and Energy Efficiency Advisory Committee

    2013-12-26

    ... International Trade Administration Renewable Energy and Energy Efficiency Advisory Committee AGENCY... Renewable Energy and Energy Efficiency Advisory Committee (RE&EEAC) will meet via conference call on January... renewable energy and energy efficiency (RE&EE) products and services. DATES: January 23, 2014, from 2:00...

  3. 76 FR 44576 - Renewable Energy and Energy Efficiency Advisory Committee

    2011-07-26

    ... International Trade Administration Renewable Energy and Energy Efficiency Advisory Committee AGENCY: U.S... Renewable Energy and Energy Efficiency Advisory Committee (RE&EEAC) will meet via conference call to... expand the competitiveness of the U.S. renewable energy and energy efficiency industries,...

  4. THE IMPACT OF RENEWABLE ENERGY SUBVENTION ON THE CAPTIVE CONSUMER

    PALIU – POPA LUCIA

    2016-10-01

    Full Text Available In the context of the European Union policy in the energy field on promoting the development of new and renewable energy forms, the Community legislation on the promotion of renewable sources had a significant development in the recent years. Thus, alternative fossil fuels (geothermal energy, ocean energy, hydropower energy, solar energy, wind energy, biomass and biofuels contribute to the diversification of the supply on energy to reduce the greenhouse gas emissions and reduce the dependence on fossil fuels markets. Moreover, in accordance with the specifications of the Directive 2009/28/EC on energy from renewable sources there has been set as compulsory target the fact that an amount of 20% of the energy consumption of the European Union by 2020, to be derived from the renewable energy sources. In turn, this objective is detailed in the secondary national compulsory targets given the different starting points of Member States. Based on these aspects, in our country, the unsubsidized renewable energy (hydroelectric, together with the photovoltaic, wind and biomass energy represented in the past three years a contribution well above the target assumed by Romania for the year 2020 of total of the produced energy. In this context, this study aims, on the one hand, to emphasize that the subsidized renewable energy to the captive consumers, by increasing the share of green certificates, results in narrowing the market of the classic manufacturers, on the other hand, to account for these securities as due to the existence of subsidies for the operating activities.

  5. The Importance of Renewable Energy in Economic Growth:

    Manel Kamoun Zribi

    2016-03-01

    Full Text Available The purpose of this paper is to estimate the impact of renewable energy consumption from combustible renewable and waste sources on economic growth in emerging countries. We analyze the stylized facts of renewable energy and emerging countries related to four regions (Africa, Europe, Latin America, and Asia. We use recent data in the cob-Douglas function and applying a non-stationary panel model for 15 emerging countries covering the period (1990-2011. The Granger causality test showed that there is no causal relationship between renewable energy consumption of combustible renewable and waste sources and economic growth that confirm the neutrality hypothesis. The results supported a positive and significant effect of renewable energy consumption of this source on economic growth in emerging countries. The absence of a causal relationship can be explained by the inefficient use of combustible renewable and waste in the majority of those emerging countries. The consumption of low variability renewable energy such as renewable and waste stimulates economic growth in emerging countries.

  6. Renewable energy systems the choice and modeling of 100% renewable solutions

    Lund, Henrik

    2009-01-01

    How can society quickly convert to renewable energy? Can worldwide energy needs ever be met through 100% renewable sources? The answers to these questions rest largely on the perception of choice in the energy arena. It is of pivotal importance that engineers, researchers and policymakers understand what choices are available, and reasonable, when considering the design and deployment of new energy systems. The mission of this new book, written by one of the world's foremost experts in renewable power, is to arm these professionals with the tools and methodologies necessary to make smart choic

  7. Bioenergy. The manifold renewable energy. 4. compl. rev. ed.; Bioenergie. Die vielfaeltige erneuerbare Energie

    NONE

    2012-06-15

    Bioenergy is the most important renewable energy source in Germany. With about 70 percent bioenergy contributes to the largest share of energy supply from renewable energy sources. This brochure provides an overview of the various possibilities, advantages and opportunities in the use of biomass and bioenergy.

  8. 5. Kassel symposium on energy systems engineering: On-site energy generation using renewable energy sources. Proceedings 2000; 5. Kasseler Symposium: Energie-Systemtechnik. Erneuerbare Energien- und rationelle Energieverwendung. Dezentrale Energieversorgung mit hohem regenerativen Anteil. Tagungsband 2000

    Schwarz, R. (comp.)

    2000-07-01

    The focal topic of the 5th Kassel Symposium on Energy Systems Engineering was ''Decentralised energy supply with a high share of renewable energies''. The contributions covered a wide range of issues including the potential of renewable energies, supply and operating concepts, components, systems engineering and future perspectives. [German] Das 5. Kasseler Symposium Energie-Systemtechnik legt seinen Schwerpunkt auf das Thema: 'Dezentrale Energieversorgung mit hohem regenerativem Anteil'. Es spannt hierzu einen Bogen von den Potenzialen der Erneuerbaren Energien ueber Versorgungs- und Betriebsfuehrungskonzepte sowie Komponenten und Systemtechnik bis hin zu zukuenftigen Perspektiven. (orig.)

  9. Hourly forecasts of renewable energy sources by an operating MOS-system of the German Weather Service

    Vogt, Gernot; Sebastian, Trepte

    2016-04-01

    Model Output Statistics (MOS) is a powerful tool for optimizing the direct output of numerical weather forecast models. By developing multiple linear regressions with predictors, derived from observations and numerical weather prediction (NWP) at DWD (German Meteorological Service), a reduction of 50% of the error variance in the forecast has been achieved. Moreover, statistical post-processing yields numerous advantages in forecasting, e. g. down-scaling to point forecasts at observation stations with specific topographic and climatologic characteristics, correction of biases and systematic errors produced by numerical models, the derivation of further predictands of interest (e. g. exceedance probabilities) and the combination of several models. In the German project EWeLiNE (Simultaneous improvement of weather and power forecasts for the grid integration of renewable energies), which is carried out in collaboration by DWD and IWES (Fraunhofer Institute for Wind Energy and Energy System Technology), one of the main goals is an adjustment of the DWD-system MOSMIX (combining numerical forecasts of the global models IFS and ICON) to the demands of transmission system operators (TSO). This includes the implementation of new predictands like wind elements in altitudes > 10m or solar radiance. To meet the demands of the TSOs the temporal resolution of MOSMIX, currently delivering forecasts in 3-hour time-steps, needs to be enhanced to 1-hour time-steps. This can be achieved by adjusting the statistical equations to take account of hourly SYNOP observations. Thus, diverse input parameters and internal processing schemes have to be re-specified for example in terms of precipitation. We show a comparative verification of 1-hour MOS and 3-hour MOS for different forecast elements. Raw data comprising of acquired point measurements of wind observations have been converted and implemented into the MOS-system. Sensitivity studies have then been conducted investigating the fit

  10. Technical, economic and regulatory aspects for the insertion of renewable sources in the Brazilian energy market; Aspectos tecnicos, economicos e regulatorios para a insercao de fontes renovaveis no mercado eletrico brasileiro

    Ferreira, Rafael Malheiro [Universidade Federal do Rio de Janeiro (PEO/COPPE/UFRJ), RJ (Brazil). Coordenacao dos Programas de Pos-Graduacao de Engenharia. Programa de Engenharia Oceanica], E-mail: rafael@lts.coppe.ufrj.br; Nogueira, Larissa Goncalves [Universidade Estadual de Campinas (UNICAMP), SP (Brazil). Curso de Pos-Graduacao em Planejamento de Sistemas Energeticos], E-mail: larissa@fem.unicamp.br

    2010-07-01

    This paper discusses technical, economical, political and regulatory aspects which have been favourable to the insertion of renewable sources in the Brazilian electric matrix, specifically those one referred to the season and intermittency interference on those final costs. Additionally, land markers will be indicated for the introduction of renewable source projects in a such way to become more attractive under the viewpoint of the investor due to adequacy of energy generation strategy.

  11. Biodegradable plastics from renewable sources.

    Flieger, M; Kantorová, M; Prell, A; Rezanka, T; Votruba, J

    2003-01-01

    Plastic waste disposal is a huge ecotechnological problem and one of the approaches to solving this problem is the development of biodegradable plastics. This review summarizes data on their use, biodegradability, commercial reliability and production from renewable resources. Some commercially successful biodegradable plastics are based on chemical synthesis (i.e. polyglycolic acid, polylactic acid, polycaprolactone, and polyvinyl alcohol). Others are products of microbial fermentations (i.e. polyesters and neutral polysaccharides) or are prepared from chemically modified natural products (e.g., starch, cellulose, chitin or soy protein).

  12. TiO2 Nanostructure Synthesized by Sol-Gel for Dye Sensitized Solar Cells as Renewable Energy Source

    Ramelan, A. H.; Wahyuningsih, S.; Saputro, S.; Supriyanto, E.; Hanif, Q. A.

    2017-02-01

    The use of renewable materials as a constituent of a smart alternative energy such as the use of natural dyes for light harvesting needs to be developed. Synthesis of anatase titanium dioxide (TiO2) and fabrication Dye-Sensitized Solar Cell (DSSC) using dye-based of anthocyanin from purple sweet potato (Ipomoea batatas L.) as a photosensitizer had been done. Synthesis TiO2 through sol-gel process with the addition of triblock copolymer Pluronic F127 template was controlled at pH 3 whereas calcination was carried out at a temperature of 500 °C, 550 °C and 600 °C. The obtained TiO2 were analyzed by XRD, SAA, and SEM. The conclusion is anatase TiO2 obtained until annealing up to 600 °C. Self-assembly Pluronic F127 triblock copolymer capable of restraining the growth of TiO2 crystals. Retention growth of TiO2 mesoporous produces material character that can be used as builders photoanode DSSC with natural sensitizer anthocyanin from purple sweet potatoes. Based on the analysis of X-ray diffraction patterns and surface area analyser, the higher the calcination temperature the greater the size of the anatase crystals is obtained, however, the smaller its surface area. Purple sweet potato anthocyanin’s dyed on to TiO2 was obtained a good enough performance for DSSC’s and gain the optimum performance from DSSC’s system built with mesoporous TiO2 annealed 550 °C using flavylium form anthocyanin.

  13. Contribution of Renewable Cooling to the Renewable Energy Target of the EU. Policy report

    Kenkmann, T.; Buerger, V. [The Oeko-Institut, Freiburg (Germany)

    2012-06-15

    Renewable cooling technologies do not play a major role in the climate protection discussion in the European Union today. At the same time the cooling demand is expected to increase significantly in the coming decades. Renewable cooling technologies could contribute to the EU renewable energy target if an appropriate political framework for a further spread of the technologies is created. This renewable cooling policy report intends to support the dissemination of renewable cooling technologies. It provides an overview of the situation, technologies and potential for cool-ing from renewable sources and identifies key areas in which further investigation is required. The report shows that there is a great need for the creation of a political framework supporting the market diffusion of renewable cooling technologies. Firstly the question of a commonly accepted definition on renewable cooling is being addressed. Secondly renewable cooling technologies are described and the today's role of cooling in European statistics and policies is analysed. In the next step existing studies are evaluated to compare the expected development of the cooling demand in Europe to the market potential of renewable cooling. At the end of the paper a long-term vision for renewable cooling is described and first steps towards a European roadmap for renewable cooling are given.

  14. 77 FR 23224 - Renewable Energy and Energy Efficiency Advisory Committee

    2012-04-18

    ... International Trade Administration Renewable Energy and Energy Efficiency Advisory Committee AGENCY... Renewable Energy and Energy Efficiency Advisory Committee (RE&EEAC) will meet via conference call on May 2... Trade Subcommittees that address issues affecting U.S. competitiveness in exporting renewable energy...

  15. 76 FR 26695 - Renewable Energy and Energy Efficiency Advisory Committee

    2011-05-09

    ... International Trade Administration Renewable Energy and Energy Efficiency Advisory Committee AGENCY... Renewable Energy and Energy Efficiency Advisory Committee (RE&EEAC) will meet to hear briefings on the state of renewable energy finance and to discuss the development of recommendations on increasing...

  16. 76 FR 54431 - Renewable Energy and Energy Efficiency Advisory Committee

    2011-09-01

    ... International Trade Administration Renewable Energy and Energy Efficiency Advisory Committee AGENCY... Renewable Energy and Energy Efficiency Advisory Committee (RE&EEAC) will hold a meeting to deliver 11... administration of programs and policies to enhance the competitiveness of the U.S. renewable energy and...

  17. 75 FR 70214 - Renewable Energy and Energy Efficiency Advisory Committee

    2010-11-17

    ... International Trade Administration Renewable Energy and Energy Efficiency Advisory Committee AGENCY... Renewable Energy and Energy Efficiency Advisory Committee (RE&EEAC) will hold its inaugural meeting to... programs and policies to expand the international competitiveness of the U.S. renewable energy and...

  18. 77 FR 32531 - Renewable Energy and Energy Efficiency Advisory Committee

    2012-06-01

    ... International Trade Administration Renewable Energy and Energy Efficiency Advisory Committee AGENCY... Renewable Energy and Energy Efficiency Advisory Committee (RE&EEAC) will hold a meeting to deliver a letter... administration of programs and policies to enhance the competitiveness of the U.S. renewable energy and...

  19. 78 FR 2952 - Renewable Energy and Energy Efficiency Advisory Committee

    2013-01-15

    ... International Trade Administration Renewable Energy and Energy Efficiency Advisory Committee AGENCY... Renewable Energy and Energy Efficiency Advisory Committee (RE&EEAC) will hold its inaugural meeting under... expected to develop recommendations on improving the competitiveness of U.S. renewable energy and...

  20. Energy generation externalities with conventional and renewable sources; Externalidades da geracao de energia com fontes convencionais e renovaveis

    Shayani, Rafael Amaral; Oliveira, Marco Aurelio Goncalves de [Universidade de Brasilia (UnB), DF (Brazil). Dept. de Engenharia Eletrica. Lab. de Fontes Alternativas de Energia

    2008-07-01

    The energy generation externalities have both positive and negative sides. The conventional sources, including fossil and nuclear fuel, have environment, political, economical and social negative externalities. The environment one affects the world climate, the political one includes the wars caused by oil control, the governmental financial support is economical aspects, and black outs, that affect all citizen's job, are a social example. The photovoltaic solar energy has a negative externality when the lead-acid battery is used into stand-alone systems. This batteries need special attention because has harmful components that can pollute the water. The use of other way to storage the energy is a solution to this, like non pollute batteries, electrostatic accumulation, flywheels, compressed air, hydrogen fuel cell or thermo accumulation. The PV system can be grid-connected too; this solutions have positive externalities, because the solar collector can replace the electric shower, reducing the transmission system demand during the peak time, and saving some energy from the conventional power plant during drought season. A house's roof can support more than twice of PV system needed to supply the energy of the house, so the potential to use the solar energy without needing new places is huge. The consciousness that the Earth is but one country, and mankind its citizens, should be adopted for all mankind, because the environment pollution of a specific place affects everyone, and the negative externalities must be calculated. The PV prices is getting cheaper each year, forecasting 45% of price reduction into the next 10 years. The governmental support to use solar hot water at residences, research and nationalization of the PV production are necessary to amplify the positive externalities of the solar energy. (author)

  1. Energy Supply Security and Renewable Energy Policies in Turkey

    Mustafa Kemal Topcu

    2016-06-01

    Full Text Available As a result of Turkey’s geopolitical position and its related requirements, energy is one of the fi elds where innovation is to be speeded up. However, as a natural consequence of unplanned and incorrect energy policies, Turkey’s rate of dependency on energy has reached 72%. Since the need for energy is increasingly growing, especially as a result of the manufacturing industry in Turkey, and a large part of the consumed energy is imported, dependency seems to continue to increase. Toward this end, this article focuses on studies related to reducing external dependency on energy, while also reviewing and discussing literature survey methodology and making policy recommendations concerning energy supply security. Renewable energy has been attached great importance worldwide as well as nationwide because of providing a reliable energy source that meets economic and environmental requirements. In order to meet the increasing electricity needs of Turkey as a developing country the number on renewable energy facilities has been growing. Domestic production of equipment for renewable energy, and producing and integrating those into the conventional system are of high importance because energy supply is a security factor, sustaining reserves is a major need and reducing foreign dependency is a policy priority.

  2. The Potential of Renewable Energy Systems in China

    Liu, Wen; Lund, Henrik; Mathiesen, Brian Vad

    2009-01-01

    This paper discusses the prospective of renewable energy in the process of sustainable development in China. Along with the high-speed economic development and increasing energy consumption, the Chinese Government faces a growing pressure to maintain the balance between energy supply and demand....... Such sustainable energy strategy typical involves three technologies issue: energy conservation, efficiency improvement and replacement fossil fuel by renewable energy sources. Denmark is an example of such strategy can be implemented and it shows the possibility of converting into a 100% renewable energy system...... as well as reduce environmental pollution. To ensure energy security and mitigate climate changes the inappropriate energy consumption structure should be changed. As an alternative, a suitable infrastructure for the implementation of renewable energy may serve as a long-term sustainable possibility...

  3. Renewable Energy Opportunities at White Sands Missile Range, New Mexico

    Chvala, William D.; Solana, Amy E.; States, Jennifer C.; Warwick, William M.; Weimar, Mark R.; Dixon, Douglas R.

    2008-09-01

    The document provides an overview of renewable resource potential at White Sands Missile Range (WSMR) based primarily upon analysis of secondary data sources supplemented with limited on-site evaluations. The effort was funded by the U.S. Army Installation Management Command (IMCOM) as follow-on to the 2005 DoD Renewable Energy Assessment. This effort focuses on grid-connected generation of electricity from renewable energy sources and also ground source heat pumps (GSHPs) for heating and cooling buildings, as directed by IMCOM.

  4. Renewable energy systems advanced conversion technologies and applications

    Luo, Fang Lin

    2012-01-01

    Energy conversion techniques are key in power electronics and even more so in renewable energy source systems, which require a large number of converters. Renewable Energy Systems: Advanced Conversion Technologies and Applications describes advanced conversion technologies and provides design examples of converters and inverters for renewable energy systems-including wind turbine and solar panel energy systems. Learn Cutting-Edge Techniques for Converters and Inverters Setting the scene, the book begins with a review of the basics of astronomy and Earth physics. It then systematically introduc

  5. Renewable Energy and Inter-Island Power Transmission (Presentation)

    Gevorgian, V.

    2011-05-01

    This presentation summarizes recent findings pertaining to inter-island connection of renewable and other energy sources, in particular, as these findings relate cable options, routing, specifications, and pros and cons.

  6. Distributed-dispersed renewable energy systems and novel control strategies

    Aljankawey, Abdualah S.

    Renewable green-energy systems are re-emerging as viable economic alternative sources of environmentally safe power generation in place of conventional fossil fuels. In terms of power quality and safety, this research investigates a number of renewable green-energy (wind, photovoltaic and fuel cells) interface schemes and control strategies that ensure maximum energy utilization, voltage and frequency stabilization and minimum impact on the host electric grid systems. The research key objectives are to study efficient and robust renewable energy converter schemes with associated control strategies and validate their operations for both stand-alone and electric utility grid interfacing. The research work investigates both stand-alone and grid connected renewable green-energy utilization schemes with a number of power electronic converter topologies and robust control schemes for both dispersed and hybrid renewable energy systems. Different sample study systems and control strategies are digitally simulated and fully validated using the MATLAB-Simulink-SimPower environment.

  7. Limiting biomass consumption for heating in 100% renewable energy systems

    Mathiesen, Brian Vad; Lund, Henrik; Connolly, David

    2012-01-01

    The utilisation of biomass poses large challenges in renewable energy systems while buildings account for a substantial part of the energy supply even in 100% renewable energy systems. In this paper the focus is on how the heating sector can reduce its consumption of biomass, thus leaving biomass...... for other sectors, but while still enabling a 100% renewable energy system. The analyses of heating technologies shows that district heating (DH) systems are important in limiting the dependence on biomass and create cost effective solutions. DH systems are especially important in renewable energy systems...... with large amounts of fluctuating sources as it enables fuel efficient and low cost energy systems with thermal heat storages. DH increases the efficiency with the use of combined heat and power production (CHP), while reducing the biomass demand by enabling the use of other renewable resources such as large...

  8. Renewable energies: are we on track

    Forest, Harvey; Braun, Gerry

    1998-12-01

    The current global energy supply mix is dominated by carbon-based fuels. This publication describes three scenarios for the future and their implications for renewable energy use and stabilization of atmospheric CO{sub 2}. Themes discussed in this connection comprise major phases of global energy supply, current deployment of renewals, future energy supply scenarios, renewals and carbon dioxide in 2050, renewable energy supply targets, solar electricity market drivers, solar penetration of grid electricity markets, rooftop PV (Photovoltaics) economics, other grid markets, solar farms for wholesale electricity and fuel in future, and PV capacity and investment requirements. 1 fig., 5 tabs.

  9. A renewable energy strategy for Lao PDR

    Milattanapheng, Chantho; Sysoulath, Hatsady; Green, Joanta; Kurukulasuriya, Mahinda

    2010-09-15

    The Government of Lao PDR (GoL) has set up the vision to 2020 ''to secure an adequate power supply throughout the country to facilitate national socio-economic development objectives in an environmentally sustainable manner''. To ensure achieving this goal, the government institutions have introduced various policies and strategies for supporting energy sector development. Lao PDR is in the process of developing a renewable energy strategy. A renewable energy strategy would facilitate the increase in the overall use and more effective use of renewable energy. This paper will discuss the salient points of the new renewable energy strategy.

  10. Economic and safe operation of isolated systems with significant contribution from renewable energy sources; Operacao economica e segura de sistemas isolados com grande penetracao de energias renovaveis

    Matos, M.A. [Instituto de Engenharia de Sistemas e Computadores (INESC), Porto (Portugal); Vlachos, A; Androutsos, A. [NTUA, Atenas (Greece); Bakirtzis, T. [AUTH, Salonica (Greece); Gigantidou, A. [DEI, Heraklio (Greece). E-mail: mmatos@inescn.pt; avlachos@power.ece.ntua.gr; bakiana@eng.auth.gr; deh_kkf@iraklio.netor.gr

    1999-07-01

    Medium and large size isolated systems with a significant contribution from renewable energy sources, specifically eolic energy, are not conveniently operated at the present, neither by the conventional ways of unit commitment/load dispatcher nor by the simplified procedures used in the small isolated power networks. This paper presents a new approaching, in the CARE framework which is financially supported by the European Union through the EEN-JOULE assistance program. The principal idea is to perform unit commitment on-line in the same dispatching cycle, by using the load forecasting and the more recent wind power. The process includes dynamic safety fast evaluation and a module for helping the decision making.

  11. Integrated Nuclear-Renewable Energy Systems: Foundational Workshop Report

    Bragg-Sitton, Shannon [Idaho National Lab. (INL), Idaho Falls, ID (United States); Boardman, Richard [Idaho National Lab. (INL), Idaho Falls, ID (United States); Ruth, Mark [National Renewable Energy Lab. (NREL), Golden, CO (United States); Zinaman, Owen [National Renewable Energy Lab. (NREL), Golden, CO (United States); Forsberg, Charles [Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Collins, John [Idaho National Lab. (INL), Idaho Falls, ID (United States)

    2014-08-01

    The U.S. Department of Energy (DOE) recognizes the need to transform the energy infrastructure of the U.S. and elsewhere to systems that can drastically reduce environmental impacts in an efficient and economically viable manner while utilizing both hydrocarbon resources and clean energy generation sources. Thus, DOE is supporting research and development that could lead to more efficient utilization of clean energy generation sources, including renewable and nuclear options. A concept being advanced by the DOE Offices of Nuclear Energy (NE) and Energy Efficiency and Renewable Energy (EERE) is tighter coupling of nuclear and renewable energy sources in a manner that produces new energy currency for the combined electricity grid, industrial manufacturing, and the transportation energy sectors. This integration concept has been referred to as a “hybrid system” that is capable of providing the right type of energy, at the right time, in the right place. At the direction of DOE-NE and DOE-EERE leadership, project leads at Idaho National Laboratory (INL), National Renewable Energy Laboratory (NREL) and Massachusetts Institute of Technology (MIT) have identified and engaged stakeholders in discussing integrated energy systems that would optimize renewable and nuclear energy integration on a region-by-region basis. Subsequent work will entail conduct of technical, economic, environmental and socio-political evaluations of the leading integrated system options based on a set of criteria established with stakeholder input. The Foundational Workshop for Integrated Nuclear – Renewable Energy Systems was organized around the following objectives: 1. Identify and refine priority region-specific opportunities for integrated nuclear-renewable energy systems in the U.S.; 2. Select Figures of Merit (FOM) to rank and prioritize candidate systems; 3. Discuss enabling technology development needs; 4. Identify analysis requirements, capabilities and gaps to estimate FOM for

  12. 75 FR 30014 - Office of Energy Efficiency and Renewable Energy; Energy Efficiency and Conservation Block Grant...

    2010-05-28

    ... of Energy Efficiency and Renewable Energy; Energy Efficiency and Conservation Block Grant Program AGENCY: Office of Energy Efficiency and Renewable Energy, Department of Energy. ACTION: Notice. SUMMARY... Efficiency and Renewable Energy (EERE), has experienced historic growth and unprecedented workload...

  13. Power Converters and Control of Renewable Energy Systems

    Blaabjerg, Frede; Teodorescu, Remus; Chen, Zhe;

    2004-01-01

    The global electrical energy consumption is steadily rising and therefore a continuous demand to increase the power generation capacity. A significant percentage of the required capacity increase can be based on renewable energy sources. Wind turbine technology, as the most cost effective renewable...... energy conversion system, will play an important part in our future energy supply. But other sources like microturbines, photovoltaics and fuel cell systems may also be serious contributor to the power supply. Characteristically, power electronics will be an efficient and important interface to the grid...... for the renewables and this paper will first briefly discuss three different alternative/renewable energy sources. Next, various configurations of small and medium power conversion topologies are presented including their control (mainly for PV-systems). Finally wind turbine configuration and their control...

  14. Cost-Efficient and Sustainable Deployment of Renewable Energy Sources towards the 20% Target by 2020, and beyond. Summary of case studies for cooperation mechanisms

    Dalla Longa, F. [ECN Policy Studies, Amsterdam (Netherlands); Klinge Jacobsen, H.; Pade Hnasen, L. [Technical University of Denmark DTU, Lyngby (Denmark); Tantareanu, C. [Center for Promotion of Clean and Efficient Energy ENERO, Bucharest (Romania); Caldes-Gomez, N.; Santamaria-Belda, M. [CIEMAT, Madrid (Spain)

    2012-09-15

    This document is a summary report highlighting the main aspect analyzed in the RES4LESS case studies. The document starts with an introductory chapter where the background that led to the selection of the case studies is outlined. In the following three chapters the case studies are presented, highlighting the most relevant results. A brief chapter concludes the document, giving an outlook on the follow-up activities of the RES4LESS project. This summary is intended not only as an introduction to the RES4LESS cases studies, but also as a guideline to read and interpret the in-depth analysis carried out in the final documents that describe the case studies in detail. These documents will be published in September 2012 on the RES4LESS website, www.res4less.eu. The objective of the RES4LESS project is to develop a Roadmap to cost-efficient deployment of energy from renewable sources (RES) in Europe, via cross-border cooperation mechanisms. The Commission has indicated that the 2020 targets for renewable energy (European Commission 2009) can be achieved through cooperation between Member States. This cooperation could lead to win-win situations, when a country with a large low-cost potential for renewable electricity could sell part of its surplus to a country with a limited and/or expensive potential. In the project, first a scoping exercise has been carried out to identify which countries could be candidates for cooperation. Next, three case studies have been elaborated to give a better view of what these cooperation mechanisms would entail in practice. The analysis has focused on renewable electricity (RES-E), although cooperation mechanisms could also be envisaged for renewable heat. Among the Member States providing the largest and cheapest surpluses Denmark, Romania and Spain have been chosen as Host Countries for the RES4LESS case studies. The technologies considered in the case studies are Offshore Wind for Denmark, Biomass for Romania, and CSP for Spain.

  15. The RenewElec Project: Variable Renewable Energy and the Power System

    Apt, Jay

    2014-02-14

    Variable energy resources, such as wind power, now produce about 4% of U.S. electricity. They can play a significantly expanded role if the U.S. adopts a systems approach that considers affordability, security and reliability. Reaching a 20-30% renewable portfolio standard goal is possible, but not without changes in the management and regulation of the power system, including accurately assessing and preparing for the operational effects of renewable generation. The RenewElec project will help the nation make the transition to the use of significant amounts of electric generation from variable and intermittent sources of renewable power.

  16. Potential of renewable energy systems in China

    Liu, Wen; Lund, Henrik; Mathiesen, Brian Vad

    2011-01-01

    Along with high-speed economic development and increasing energy consumption, the Chinese Government faces a growing pressure to maintain the balance between energy supply and demand. In 2009, China has become both the largest energy consumer and CO2 emitting country in the world. In this case...... system has demonstrated the possibility of converting into a 100% renewable energy system. This paper discusses the perspective of renewable energy in China firstly, and then analyses whether it is suitable to adopt similar methodologies applied in other countries as China approaches a renewable energy......, the inappropriate energy consumption structure should be changed. As an alternative, a suitable infrastructure for the implementation of renewable energy may serve as a long-term sustainable solution. The perspective of a 100% renewable energy system has been analyzed and discussed in some countries previously...

  17. Water as a source of renewable energy. Environmental impacts of six energy techniques; Water als bron van duurzame energie. Omgevingseffecten van zes energietechnologieen

    Van den Berg, M.; De Bie, Y.; Geurts, F.; Van Iersel, S.; Ritzen, A.; Stolk, N.

    2010-03-15

    This report describes the environmental impact of six energy technologies using water: thermal energy storage, tidal current, tidal energy with height of fall, wave energy, aquatic biomass and osmosis energy (blue energy) [Dutch] In dit rapport zijn de omgevingseffecten van zes energietechnologieen met water beschreven: warmte koude opslag, getijdenstroming, getijdenenergie op verval, golfenergie, aquatische biomassa en osmose-energie (blue energy)

  18. Water as a source of renewable energy. Recommendations and energy payback periods of eight techniques; Water als bron van duurzame energie. Aanbevelingen en energieterugverdientijden van acht technologieen

    Van de Berg, M.; Geurts, F.; Stolk, N.

    2010-02-15

    This report describes the environmental impact of six energy technologies using water: thermal energy storage, tidal current, tidal energy with height of fall, wave energy, aquatic biomass and osmosis energy (blue energy) [Dutch] In dit rapport zijn de omgevingseffecten van zes energietechnologieen met water beschreven: warmte koude opslag, getijdenstroming, getijdenenergie op verval, golfenergie, aquatische biomassa en osmose-energie (blue energy)

  19. Urban Planners with Renewable Energy Skills

    Arto Emerik Nuorkivi

    2013-06-01

    Full Text Available There is no much tradition to combine urban and energy planning together to fight Climate Change even though energy production with fossil fuels is the main cause to the Change. Pilot training of urban planners in five EU countries such Finland, Germany, Hungary, Spain and the United Kingdom to understand the basics of renewable energy sources (RES and energy efficiency (EE has been carried out during 2011-2012 under co-financing of Intelligent Energy Europe. Organizing such pilot training was challenging for many reasons, but the outcome can be consdered highly statisfactory, based on the recorded feedback of trainees and other stakeholders. The project encourages other planning schools in Europe to learn from the experience and to use the published training materials available in ten languages in their curricula.

  20. Utilization of renewable energy in architectural design

    TIAN Lei; QIN Youguo

    2007-01-01

    Renewable energy does not simply equal to using a photovoltaic (PV) board.In addition to heating,ventilation and air conditioning (HVAC) engineering considerations,the design approaches of architects are crucial to the utilization condition and methods of renewable energy.Through profound comprehension of the relationship between renewable energy utilization and design approaches,we can achieve a dual-standard of building environment performance and esthetics.

  1. Renewable energy education: a worldwide status review

    Kandpal, Tara C.; Broman, Lars

    2015-02-15

    The need for renewable energy education and training at all levels is globally recognized. During the last three decades, a large number of countries across the globe have initiated academic programmes on renewable energy technologies and related aspects. A review of published literature on renewable energy education initiatives across the globe, challenges faced, and potential approaches towards efficient and effective solutions are presented in the paper.

  2. Renewable energy progress and biofuels sustainability

    Hamelinck, C.; De Lovinfosse, I.; Koper, M.; Beestermoeller, C.; Nabe, C.; Kimmel, M.; Van den Bos, A.; Yildiz, I.; Harteveld, M. [Ecofys Netherlands, Utrecht (Netherlands); Ragwitz, M.; Steinhilber, S. [Fraunhofer Institut fuer System- und Innovationsforschung ISI, Karlsruhe (Germany); Nysten, J.; Fouquet, D. [Becker Buettner Held BBH, Munich (Germany); Resch, G.; Liebmann, L.; Ortner, A.; Panzer, C. [Energy Economics Group EEG, Vienna University of Technology, Vienna (Austria); Walden, D.; Diaz Chavez, R.; Byers, B.; Petrova, S.; Kunen, E. [Winrock International, Brussels (Belgium); Fischer, G.

    2013-03-15

    On 27 March 2013, the European Commission published its first Renewable Energy Progress Report under the framework of the 2009 Renewable Energy Directive. Since the adoption of this directive and the introduction of legally binding renewable energy targets, most Member States experienced significant growth in renewable energy consumption. 2010 figures indicate that the EU as a whole is on its trajectory towards the 2020 targets with a renewable energy share of 12.7%. Moreover, in 2010 the majority of Member States already reached their 2011/2012 interim targets set in the Directive. However, as the trajectory grows steeper towards the end, more efforts will still be needed from the Member States in order to reach the 2020 targets. With regard to the EU biofuels and bioliquids sustainability criteria, Member States' implementation of the biofuels scheme is considered too slow. In accordance with the reporting requirements set out in the 2009 Directive on Renewable Energy, every two years the European Commission publishes a Renewable Energy Progress Report. The report assesses Member States' progress in the promotion and use of renewable energy along the trajectory towards the 2020 renewable energy targets. The report also describes the overall renewable energy policy developments in each Member State and their compliance with the measures outlined in the Directive and the National Renewable Energy Action Plans. Moreover, in accordance with the Directive, it reports on the sustainability of biofuels and bioliquids consumed in the EU and the impacts of this consumption. A consortium led by Ecofys was contracted by the European Commission to perform support activities concerning the assessment of progress in renewable energy and sustainability of biofuels.

  3. International entrepreneurship within offshore renewable energy

    Loevdal, Nicolai S.

    2011-07-01

    The climate is changing, the worlds known fossil energy reserves are limited, and most economies are struggling to get out of a financial crisis. The UNs Intergovernmental Panel on Climate Change calls for new technologies, rapid commercialization, and rapid international diffusion as important tools to mitigate the climate change (IPCC 2007). Nations all over the world have allocated large funds to facilitate the development of renewable energy technologies and markets to secure the future supply of energy and to sustain economic growth (REN21 2009). Use of fossil fuel is the main source of humans contribution to global warming. At the same time, fossil fuel is probably the most important resource for economic development on a global scale (IEA 2009). With this as a backdrop, the objective of this PhD thesis is to investigate how technology-based companies act to commercialize and internationally diffuse technologies that may produce abundant clean, renewable energy. More specifically, I have assessed the emerging offshore renewable energy industries (offshore wind, wave, and tidal energy) as case industries to make the International Entrepreneurship literature more relevant for the current situation. The findings reveal extensive international activities at both the company level and industry level, even in phases in which the firms have yet to commercialize and industries have yet to enter the growth phase. These findings demand significant updates to theoretical models and convey several recommendations to mangers, investors, and policy makers. Managers should be aware of and master the new opportunities/threats identified. For investors, the findings provide implications for their valuation of new ventures. For policy makers, the findings open up a new landscape of political threats and opportunities as the battle to attract promising industries has begun earlier than previously prescribed. Four research questions have resulted in four papers that constitute

  4. 78 FR 48855 - Renewable Energy and Energy Efficiency Advisory Committee

    2013-08-12

    ...; ] DEPARTMENT OF COMMERCE International Trade Administration Renewable Energy and Energy Efficiency Advisory... Meeting. SUMMARY: The Renewable Energy and Energy Efficiency Advisory Committee (RE&EEAC) will hold a... administration of programs and policies to enhance the international competitiveness of the U.S. renewable...

  5. 77 FR 6783 - Renewable Energy and Energy Efficiency Advisory Committee

    2012-02-09

    ... International Trade Administration Renewable Energy and Energy Efficiency Advisory Committee AGENCY... Renewable Energy and Energy Efficiency Advisory Committee (RE&EEAC) will hold a meeting to hear... of Commerce on efforts to address issues that affect the competitiveness of U.S. renewable ]...

  6. Promotion of direct marketing and supply on demand of electric power from renewable energy sources. Final report; Foerderung der Direktvermarktung und der bedarfsgerechten Einspeisung von Strom aus Erneuerbaren Energien. Endbericht

    NONE

    2010-06-23

    The study investigates the promotion of direct marketing and supply on demand of electric power from renewable energy sources in Germany. the study shows that renewable energy sources are a good option for facing the challenges of the future. However, the potential is often left unused because of a lack of incentives in the current pricing system. To solve this problem, the Federal Ministry of the Environment, Nature Conservation and Nuclear Safety authorized two studies that are to enable or improve the utilization of the integration potentials of the renewable energy sources. Two model proposals based on these studies are presented here. The model proposing a bonus for combined-cycle power plants is to ensure supply on demand of electric power from renewables with the aid of integrated power storage systems. However, it is found that this model will not generate significant effects for power supply on demand. The second model proposes financial incentives; it will work well for renewable power supply systems that can be controlled, e.g. bioenergy, run-of-river power plants with power storage, and biogas plants. On the other hand, supply-dependent technologies like wind power, photovoltaic power, run-of-river power plants without power storage, and geothermal power plants with very low variable cost, the goal is not fully reached. In contrast to the first model, the market incentives model will enhance the integration of renewable energy sources in the competitive market by largely eliminating market risks. (orig./RHM)

  7. RESGen: Renewable Energy Scenario Generation Platform

    Iversen, Jan Emil Banning; Pinson, Pierre

    2016-01-01

    Space-time scenarios of renewable power generation are increasingly used as input to decision-making in operational problems. They may also be used in planning studies to account for the inherent uncertainty in operations. Similarly using scenarios to derive chance-constraints or robust...... optimization sets for corresponding optimization problems is useful in a power system context. Generating and evaluating such spacetime scenarios is difficult. While quite a number of proposals have appeared in the literature, a gap between methodological proposals and actual usage in operational and planning...... studies remains. Consequently, our aim here is to propose an open-source platform for space-time probabilistic forecasting of renewable energy generation (wind and solar power). This document covers both methodological and implementation aspects, to be seen as a companion document for the open...

  8. Contribution of Renewables to Energy Security

    NONE

    2007-07-01

    The environmental benefits of renewable energy are well known. But the contribution that they can make to energy security is less widely recognised. This report aims to redress the balance, showing how in electricity generation, heat supply, and transport, renewables can enhance energy security and suggesting policies that can optimise this contribution.

  9. Role of Energy Storage with Renewable Electricity Generation

    Denholm, P.; Ela, E.; Kirby, B.; Milligan, M.

    2010-01-01

    Renewable energy sources, such as wind and solar, have vast potential to reduce dependence on fossil fuels and greenhouse gas emissions in the electric sector. Climate change concerns, state initiatives including renewable portfolio standards, and consumer efforts are resulting in increased deployments of both technologies. Both solar photovoltaics (PV) and wind energy have variable and uncertain (sometimes referred to as intermittent) output, which are unlike the dispatchable sources used for the majority of electricity generation in the United States. The variability of these sources has led to concerns regarding the reliability of an electric grid that derives a large fraction of its energy from these sources as well as the cost of reliably integrating large amounts of variable generation into the electric grid. In this report, we explore the role of energy storage in the electricity grid, focusing on the effects of large-scale deployment of variable renewable sources (primarily wind and solar energy).

  10. VT Renewable Energy Sites - Oilseed Crop Biodiesel

    Vermont Center for Geographic Information — (Link to Metadata) The Renewable Energy Atlas of Vermont and this dataset were created to assist town energy committees, the Clean Energy Development Fund and other...

  11. VT Renewable Energy Sites - Efficiency Sites

    Vermont Center for Geographic Information — (Link to Metadata) The Renewable Energy Atlas of Vermont and this dataset were created to assist town energy committees, the Clean Energy Development Fund and other...

  12. VT Renewable Energy Sites - Algae Biodiesel

    Vermont Center for Geographic Information — (Link to Metadata) The Renewable Energy Atlas of Vermont and this dataset were created to assist town energy committees, the Clean Energy Development Fund and other...

  13. VT Renewable Energy Sites - Woody Biomass

    Vermont Center for Geographic Information — (Link to Metadata) The Renewable Energy Atlas of Vermont and this dataset were created to assist town energy committees, the Clean Energy Development Fund and other...

  14. VT Renewable Energy Sites - Methane Digesters

    Vermont Center for Geographic Information — (Link to Metadata) The Renewable Energy Atlas of Vermont and this dataset were created to assist town energy committees, the Clean Energy Development Fund and other...

  15. Financing Renewable Energy in the European Energy Market

    De Jager, D.; Klessmann, C.; Stricker, E.; Winkel, T.; De Visser, E.; Koper, M. [Ecofys, Utrecht (Netherlands); Ragwitz, M.; Held, A. [Fraunhofer ISI, Karlsruhe (Germany); Resch, G.; Busch, S.; Panzer, C. [Energy Economics Group EEG, Vienna University of Technology, Vienna (Austria); Gazzo, A.; Roulleau, T.; Gousseland, P.; Henriet, M.; Bouille, A. [Ernst and Young, London (United Kingdom)

    2011-01-15

    The Directive 2009/28/EC on the promotion of the use of energy from renewable sources (RES) sets the overall target to reach 20% renewable energy in gross final energy consumption in 2020. This target is broken down into binding individual Member State targets. Reaching these targets will require a huge mobilization of investments in renewable energies in the coming decade. In order to improve financing and coordination with a view to the achievement of the 20 % target, Article 23 (7) of the Directive requires the Commission to present an analysis and action plan with a view to: (a) The better use of structural funds and framework programmes; (b) The better and increased use of funds from the European Investment Bank and other public finance institutions; (c) Better access to risk capital; (d) The better coordination of Community and national funding and other forms of support; (e) The better coordination in support of renewable energy initiatives whose success depends on action by actors in several Member States. This report presents the results of the title project. The study provides an up to date and thorough assessment of the costs of renewable energy and the support and financing instruments available for renewable energy R and D, demonstration projects and large-scale deployment. This includes details of each Member State's expenditure (via grants, support schemes, loans etc.) and use of Community funds, including loans of the EIB (European Investment Bank) and the EBRD (European Bank for Reconstruction and Development). It also explores the possible instruments for use in the future and constraints in the capital market, which hinder the development of renewable energy. Finally, it develops recommendations for improving financing and support instruments, improving the sector's access to capital, and closing the financing gap for reaching the 2020 targets. The chapters of the report represent separate tasks: (1) Costs of renewable energy

  16. Financing Innovations for the Renewable Energy Transition in Europe

    Raphael Bointner; Simon Pezzutto; Gianluca Grilli; Wolfram Sparber

    2016-01-01

    Renewable energy sources are vital to achieving Europe’s 2030 energy transition goals. Technological innovation, driven by public expenditures on research and development, is a major driver for this change. Thus, an extensive dataset on these expenditures of the European Member States and the European Commission, dating back to the early 1970s, was created. This paper creates predictive scenarios of public investment in renewable energy research and development in Europe based on this histori...

  17. Comparing energy storage options for renewable energy integration

    Østergaard, Poul Alberg

    -inclusive 100% renewable energy scenario developed for the Danish city Aalborg based on wind power, bio-resources and low-temperature geothermal heat. The paper investigates the system impact of different types of energy storage systems including district heating storage, biogas storage and electricity storage......Increasing penetrations of fluctuating energy sources for electricity generation, heating, cooling and transportation increase the need for flexibility of the energy system to accommodate the fluctuations of these energy sources. Controlling production, controlling demand and utilizing storage...... options are the three general categories of measures that may be applied for ensuring balance between production and demand, however with fluctuating energy sources, options are limited, and flexible demand has also demonstrated limited perspective. This paper takes its point of departure in an all...

  18. Integrated Renewable Energy and Campus Sustainability Initiative

    Uthoff, Jay [Luther College, Decorah, IA (United States); Jensen, Jon [Luther College, Decorah, IA (United States); Bailey, Andrew [Luther College, Decorah, IA (United States)

    2013-09-25

    Renewable energy, energy conservation, and other sustainability initiatives have long been a central focus of Luther College. The DOE funded Integrated Renewable Energy and Campus Sustainability Initiative project has helped accelerate the College’s progress toward carbon neutrality. DOE funds, in conjunction with institutional matching funds, were used to fund energy conservation projects, a renewable energy project, and an energy and waste education program aimed at all campus constituents. The energy and waste education program provides Luther students with ideas about sustainability and conservation guidelines that they carry with them into their future communities.

  19. Energy from biomass. Summaries of the Biomass Projects carried out as part of the Department of Trade and Industry's New and Renewable Energy Programme. Vol. 5: straw, poultry litter and energy crops as energy sources

    NONE

    1999-01-01

    These volumes of summaries provide easy access to the many projects carried out in the Energy from Biomass programme area as part of the Department of Trade and Industry's New and Renewable Energy Programme. The summaries in this volume cover contractor reports on the subject published up to December 1997. (author)

  20. Power Electronics and Control of Renewable Energy Systems

    Iov, Florin; Ciobotaru, Mihai; Sera, Dezso

    2007-01-01

    sources from the conventional, fossil (and short term) based energy sources to renewable energy resources. Another is to use high efficient power electronics in power generation, power transmission/distribution and end-user application. This paper discuss some of the most emerging renewable energy sources......, wind energy and photovoltaics, which by means of power electronics are changing from being minor energy sources to be acting as important power sources in the energy system.......The global electrical energy consumption is still rising and there is a demand to double the power capacity within 20 years. The production, distribution and use of energy should be as technological efficient as possible and incentives to save energy at the end-user should also be set up...

  1. Role of renewable energy for the 21st century

    Kapur, J.C. [World Affairs Journal, New Delhi (India)

    1999-01-01

    The present high energy paradigm of consumerism and armament is almost entirely structured on non-renewable fossil fuels. This commitment is now being further extended through massive new infrastructures and life styles to the emerging new nations. Arising out of the energy concentration and constraints of the economic parameters, movement towards low density sun-based sources of energy will be slow and halting. In the final analysis the factors, which will determine the timescale and speed of shift to renewable sources of energy, would include:- the declining economic availability and increasing conflicts in the acquisition of non renewable resources, crossing of he threshold of environmental sustainability of parameters such as doubling of Carbon dioxide, ozone layer depletion and health endangering pollution, and nuclear wastes etc., the available times scale for substitution with renewables, movement away from high energy, high technology consumerist life style and their armament support system. (Author)

  2. Renewable energies and public policies; Energies renouvelables et politiques publiques

    NONE

    2002-07-01

    This report presents the full texts of the allocution delivered during the colloquium on the renewable energies and the public policies. It takes stock on the strategical environment and the political will of the renewable energies, the tracks of development in France and the necessity of a law on the renewable energies. (A.L.B.)

  3. Time for us to win: renewable energy must succeed

    Teske, Sven [Greenpeace International Renewable Energy Campaign (Denmark)

    2005-11-15

    The author points to the need to rebuild a major part of the energy sector in the near future and suggests that it should be done using renewable energy sources. He states that a 'clean' energy future requires governments to: set legally binding targets for renewable energy for each sector (electricity, heating/cooling and transport); establish a reliable scheme to enable private investors to sell renewable energy to the grid and receive a financial discount on their energy bills; ensure that renewable energy has guaranteed and priority access to the grid; and shift their investment away from fossil fuels and nuclear power - starting by eliminating direct and indirect subsidies to these industries, which would save taxpayers' money. (UK)

  4. Renewable Energy Opportunities at Fort Drum, New York

    Brown, Scott A.; Orrell, Alice C.; Solana, Amy E.; Williamson, Jennifer L.; Hand, James R.; Russo, Bryan J.; Weimar, Mark R.; Rowley, Steven; Nesse, Ronald J.

    2010-10-20

    This document provides an overview of renewable resource potential at Fort Drum, based primarily upon analysis of secondary data sources supplemented with limited on-site evaluations. This effort focuses on grid-connected generation of electricity from renewable energy sources and also on ground source heat pumps for heating and cooling buildings. The effort was funded by the U.S. Army Installation Management Command (IMCOM) as follow-on to the 2005 Department of Defense (DoD) Renewables Assessment. The site visit to Fort Drum took place on May 4 and 5, 2010.

  5. Renewable Energy Opportunities at Fort Campbell, Tennessee/Kentucky

    Hand, James R.; Horner, Jacob A.; Kora, Angela R.; Orrell, Alice C.; Russo, Bryan J.; Weimar, Mark R.; Nesse, Ronald J.

    2011-03-31

    This document provides an overview of renewable resource potential at Fort Campbell, based primarily upon analysis of secondary data sources supplemented with limited on-site evaluations. This effort focuses on grid-connected generation of electricity from renewable energy sources and also on ground source heat pumps for heating and cooling buildings. The effort was funded by the U.S. Army Installation Management Command (IMCOM) as follow-on to the 2005 Department of Defense (DoD) Renewables Assessment. The site visit to Fort Campbell took place on June 10, 2010.

  6. The renewable energies: a topical issue; Les energies renouvelables: un sujet d'actualite

    NONE

    2003-09-01

    This document analyzes the situation of the renewable energies in the french energy sector. The first part presents the part of the renewable energies in the energy production and consumption, their interest in the fight against the climatic change and in the employment creation. The second part details for each renewable energy source the government policy in favor their development and the legislative framework. The third part provides data on cost, CO{sub 2} emissions, life cycle and employments to illustrate the analysis. The last part presents the government objectives of the renewable energies development for 2010. (A.L.B.)

  7. First step towards the sun. Argentina's policy focuses on launching renewable energy sources; Erster Schritt in Richtung Sonne. Argentiniens Politik macht sich an die Markteinfuehrung erneuerbarer Energien

    Bosworth, Melissa

    2011-06-15

    During the past two years, Argentina started to promote solar energy. A programme for the development of renewable energy sources was launched in 2009. While it does not envisage a large share of photovoltaic conversion, still this is more than before. And there are further projects. 2011 may be the year when Argentina's solar market is getting real.

  8. Enhancing the growth of renewable energy sources. Pt. 2. The fossil fuel economy is meeting a turning point; Das Wachstum der Erneuerbaren beschleunigen. T. 2. Die fossile Energiewirtschaft vor dem Scheitelpunkt

    Seltmann, Thomas

    2009-04-15

    The first part of this article was published in SBZ 7/09; it described the dramatic shortage of fossil fuels. The second part presents analyses and forecasts of the potential and rate of development of renewable energy sources. The central statement is that development can be faster and at lower investments than often assumed, but there are still massive obstacles. Also, the faster the conversion to renewables, the less costly it will be. (orig.)

  9. Local renewable energy cooperatives : Revolution in disguise?

    J.A.M. Hufen (Hans); J.F.M. Koppenjan (Joop)

    2015-01-01

    markdownabstractBackground: The Eurostat statistics on the 28 EU member states’ performance in relation to renewable energy show that the Netherlands comes 25th in the EU-28. Yet, 500 initiatives were started by citizens and social groups over the last years to produce and consume renewable energy.

  10. Local renewable energy cooperatives: revolution in disguise?

    J.A.M. Hufen (Hans); J.F.M. Koppenjan (Joop)

    2015-01-01

    textabstractBackground: The Eurostat statistics on the 28 EU member states’ performance in relation to renewable energy show that the Netherlands comes 25th in the EU-28. Yet, 500 initiatives were started by citizens and social groups over the last years to produce and consume renewable energy. The

  11. Renewable energy 1998: Issues and trends

    NONE

    1999-03-01

    This report presents the following five papers: Renewable electricity purchases: History and recent developments; Transmission pricing issues for electricity generation from renewable resources; Analysis of geothermal heat pump manufacturers survey data; A view of the forest products industry from a wood energy perspective; and Wind energy developments: Incentives in selected countries. A glossary is included. 19 figs., 27 tabs.

  12. The Analysis of Renewable Energy Researches in Turkey

    Tan, S. O.; Toku, T.; Türker, İ.

    2016-11-01

    The rapid consumption of limited conventional energy resources mobilizes many countries in the world against global energy crisis. As well as the energy crisis, the environmental pollution caused by existing energy sources also encourages the researchers to study in new energy technologies and also renewable energy resources. From this point of view, it is important for each country to identify its wind, solar, geothermal, biomass, hydro and other renewable energy potentials. Considering this urgent energy requirement, the researches and especially the academic studies have been increased on renewable energy resources to meet the energy demand by means of indigenous resources in each country. Consequently, the main purpose of this study is to analyze the academic studies in Turkey to find out the increment rate of researches, their publication years and the more focusing branch on renewable energy by illustrating the statistical distribution of these data. Automated Data Retrieval Methods have been employed to achieve data from Web of Science database and statistical analyses have been made by SQL server management studio program. The academic studies in all variety of renewable energy areas have a tendency to increase which indicates the importance ratio of renewable energy in Turkey.

  13. NREL Response to the Report 'Study of the Effects on Employment of Public Aid to Renewable Energy Sources' from King Juan Carlos University (Spain) (White Paper)

    Lantz, E.; Tegen, S.

    2009-08-01

    Job generation has been a part of the national dialogue surrounding energy policy and renewable energy (RE) for many years. RE advocates tout the ability of renewable energy to support new job opportunities in rural America and the manufacturing sector. Others argue that spending on renewable energy is an inefficient allocation of resources and can result in job losses in the broader economy. The report, Study of the Effects on Employment of Public Aid to Renewable Energy Sources, from King Juan Carlos University in Spain, is one recent addition to this debate. This report asserts that, on average, every renewable energy job in Spain 'destroyed' 2.2 jobs in the broader Spanish economy. The authors also apply this ratio to the U.S. context to estimate expected job loss from renewable energy development and policy in the United States. This memo discusses fundamental and technical limitations of the analysis by King Juan Carlos University and notes critical assumptions implicit in the ultimate conclusions of their work. The memo also includes a review of traditional employment impact analyses that rely on accepted, peer-reviewed methodologies, and it highlights specific variables that can significantly influence the results of traditional employment impact analysis.

  14. Renewable energy costs, potentials, barriers. Conceptual issues

    Verbruggen, Aviel [University of Antwerp (Belgium); Fischedick, Manfred [Wuppertal Institute for Climate, Environment, Energy (Germany); Moomaw, William [Tufts University, Center for International Environment and Resource Policy (United States); Weir, Tony [University of the South Pacific, Fiji Islands (Fiji); Nadai, Alain [Centre International de Recherche sur Environnement et le Developpement CIRED (France); Nilsson, Lars J. [University of Lund (Sweden); Nyboer, John [Simon Fraser University, School of Resource and Environmental Management (Canada); Sathaye, Jayant [Lawrence Berkeley Laboratory (United States)

    2010-02-15

    Renewable energy can become the major energy supply option in low-carbon energy economies. Disruptive transformations in all energy systems are necessary for tapping widely available renewable energy resources. Organizing the energy transition from non-sustainable to renewable energy is often described as the major challenge of the first half of the 21st century. Technological innovation, the economy (costs and prices) and policies have to be aligned to achieve full renewable energy potentials, and barriers impeding that growth need to be removed. These issues are also covered by IPCC's special report on renewable energy and climate change to be completed in 2010. This article focuses on the interrelations among the drivers. It clarifies definitions of costs and prices, and of barriers. After reviewing how the third and fourth assessment reports of IPCC cover mitigation potentials and commenting on definitions of renewable energy potentials in the literature, we propose a consistent set of potentials of renewable energy supplies. (author)

  15. Energy Saving in Public Transport Using Renewable Energy

    Vincenzo Franzitta

    2017-01-01

    Full Text Available Hydrogen produced by renewable sources represents an interesting way to reduce the energetic dependence on fossil fuels in the transportation sector. This paper shows a feasibility study for the production, storage and distribution of hydrogen in the western Sicilian context, using three different renewable sources: wind, biomass and sea wave. The objective of this study is the evaluation of the hydrogen demand, needed to replace all diesel supplied buses with electrical buses equipped with fuel cells. An economic analysis is presented with the evaluation of the avoidable greenhouse gas emissions. Four different scenarios correlate the hydrogen demand for urban transport to the renewable energy resources present in the territories and to the modern technologies available for the production of hydrogen. The study focuses on the possibility of tapping into the potential of renewable energies (wind, biomass and sea wave for the production of hydrogen by electrolysis. The use of hydrogen would reduce significantly the emissions of particulate and greenhouse gases in the urban districts under analysis.

  16. Renewable energy: past trends and future growth in 2 degrees scenarios

    Crijns-Graus, Wina

    2016-01-01

    This study explores past growth rates of renewable energy sources (1971-2012) and required future ones in 2 degrees scenarios. Results show that in spite of comparatively high growth of renewable energy in the period 2000-2012, the share of renewable energy in total energy use stayed the same (13%).

  17. Estimating Renewable Energy Resources of Russia: Goals and Perspectives

    Shakun V.

    2012-10-01

    Full Text Available During the last several years in some regions of Russian Federation one can observe a growing interest in renewable energy projects motivated by a necessity to have stable, affordable and autonomous energy sources. Besides, there has been an advance in legal initiatives designed to regulate the development of renewable energy sources in Russia. Some governmental regulations having for an object to stimulate this area, have already been accepted. The regulation contains the target value parameters of the output volume of the electric energy output volumes with the use of renewable energy sources (except hydroelectric power plants with the established capacity exceeding 25 MW. The work shows the results of resource estimating wind, solar, biomass energy resources for Russia, using GIS methods, which allow one to provide more exact predictions for the energy development, and therefore to prove investments and to pass to working out the equipment design of energy plants based on renewable energy sources. Current matters are relating to opportunities and perspectives of renewable sector in Russia.

  18. Estimating Renewable Energy Resources of Russia: Goals and Perspectives

    Kiseleva, S.; Rafikova, J.; Shakun, V.

    2012-10-01

    During the last several years in some regions of Russian Federation one can observe a growing interest in renewable energy projects motivated by a necessity to have stable, affordable and autonomous energy sources. Besides, there has been an advance in legal initiatives designed to regulate the development of renewable energy sources in Russia. Some governmental regulations having for an object to stimulate this area, have already been accepted. The regulation contains the target value parameters of the output volume of the electric energy output volumes with the use of renewable energy sources (except hydroelectric power plants with the established capacity exceeding 25 MW. The work shows the results of resource estimating wind, solar, biomass energy resources for Russia, using GIS methods, which allow one to provide more exact predictions for the energy development, and therefore to prove investments and to pass to working out the equipment design of energy plants based on renewable energy sources. Current matters are relating to opportunities and perspectives of renewable sector in Russia.

  19. South east England renewable energy planning study

    Duffin, A.

    1998-09-01

    This is the final report on a study into planning for renewable energy development in the South East region of the United Kingdom (UK). The study was performed by ETSU under contract to Directorate General XVII (DGXVII) of the European Commission (EC) under the ALTENER programme. Half the funding was provided by the UK Department of Trade and Industry (DTI) through the UK`s New and Renewable Energy Programme. The study is one of a series concerned with regional assessment of and planning for renewable energies. A number of studies have already been completed by ETSU. These include ``An Assessment of the Potential Renewable Energy Resource in Scotland``, Planning and Renewable Energy in Cumbria``, An Assessment of Renewable Energy in the Southern Electric Region`` and ``Southern Region Renewable Energy Planning Study``. These reports are available through ETSU`s New and Renewable Enquiries Bureau. ETSU is also currently performing two similar studies covering Strathclyde and the East Midlands region of the UK under separate contracts and is about to begin work on two more, the first covering the Eastern region of the UK and the second Yorkshire and Lancashire. (author)

  20. Outer Continental Shelf Active Renewable Energy Leases

    Bureau of Ocean Energy Management, Department of the Interior — Active renewable energy leasing areas on the Atlantic OCS - currently Cape Wind offshore Cape Cod Massachusetts, Rhode Island / Massachusetts (RIMA), Delaware,...