The Experts below are selected from a list of 11742 Experts worldwide ranked by ideXlab platform
Janusz Steller - One of the best experts on this subject based on the ideXlab platform.
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assessment of Renewable Electricity generation by pumped storage power plants in eu member states
Renewable & Sustainable Energy Reviews, 2013Co-Authors: Petras Punys, Raimundas Baublys, Egidijus Kasiulis, Andrius Vaisvila, Bernhard Pelikan, Janusz StellerAbstract:This paper studies pumped storage plants (PSPs) operating all over the EU, in which the key statistical indicators can be found in the European Hydropower database (HYDI), administered and managed by the European Small Hydropower Association (ESHA). The main emphasis is on mixed-type PSPs, which generate Electricity from natural inflow; however, pure PSP plants are included in this study. Different analysed, independent PSP data sources (e.g., Eurostat, Eurelectric) show a great variation in the main statistical values (installed capacity and power generation) of the EU pumped storage plant fleet. Presented and analysed PSP layouts and a clear methodology for determining Renewable Electricity generation from mixed pumped storage plants will avoid ambiguities that actually pertain to power databases to clearly separate Renewable and non-Renewable Electricity generation. Most of the National Renewable Energy Action Plans (NREAP) submitted to the European Commission do not correctly account for Renewable Electricity generation due to natural inflow into upper basins of PSPs. Moreover, Renewable and non-Renewable Electricity generation types are mixed up. The operating mixed PSP installed capacity and Electricity generation were determined in the EU countries, which is a type of Renewable source, and their projected estimates in 2020 are provided.
Trieu Mai - One of the best experts on this subject based on the ideXlab platform.
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implications of high Renewable Electricity penetration in the u s for water use greenhouse gas emissions land use and materials supply
Applied Energy, 2014Co-Authors: Doug Arent, Trieu Mai, Ryan Wiser, Garvin Heath, Maureen Hand, Samuel F. Baldwin, Jacquelyn Pless, Jordan Macknick, Morgan Bazilian, Adam SchlosserAbstract:Abstract Recent work found that Renewable energy could supply 80% of Electricity demand in the contiguous United States in 2050 at the hourly level. This paper explores some of the implications of achieving such high levels of Renewable Electricity for supply chains and the environment in scenarios with Renewable supply up to such levels. Expanding the Renewable Electricity supply at this scale by 2050 implies annual capacity additions of roughly 20 gigawatts per year (GW/year) over the next decade, rising to roughly 40 GW/year from 2040 to 2050. Given total 2012 Renewable Electricity capacity additions of slightly more than 16 GW, this suggests moderate growth of the related supply chains, averaging overall roughly 4% annual growth to 2040. Transitioning to high Renewable Electricity supply would lead to significant reductions in greenhouse gas emissions and water use, with only modest land-use implications. While Renewable energy expansion implies moderate growth of the Renewable Electricity supply chains, no insurmountable long-term constraints to Renewable Electricity technology manufacturing capacity or materials supply are identified.
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Renewable Electricity Futures for the United States
IEEE Transactions on Sustainable Energy, 2014Co-Authors: Trieu Mai, Paul Denholm, D. Sandor, M. Maureen Hand, Samuel F. Baldwin, Ryan H. Wiser, Greg L. Brinkman, Doug J. Arent, Gian Porro, Donna J. HostickAbstract:This paper highlights the key results from the Renewable Electricity (RE) Futures Study. It is a detailed consideration of Renewable Electricity in the United States. The paper focuses on technical issues related to the operability of the U.S. Electricity grid and provides initial answers to important questions about the integration of high penetrations of Renewable Electricity technologies from a national perspective. The results indicate that the future U.S. Electricity system that is largely powered by Renewable sources is possible and the further work is warranted to investigate this clean generation pathway. The central conclusion of the analysis is that Renewable Electricity generation from technologies that are commercially available today, in combination with a more flexible electric system, is more than adequate to supply 80% of the total U.S. Electricity generation in 2050 while meeting Electricity demand on an hourly basis in every region of the United States.
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Envisioning a Renewable Electricity future for the United States
Energy, 2014Co-Authors: Trieu Mai, Maureen Hand, David Mulcahy, Samuel F. BaldwinAbstract:Abstract This paper presents high Renewable Electricity penetration scenarios in the United States using detailed capacity expansion modeling that is designed to properly account for the variability and uncertainty of wind and solar resources. The scenarios focus solely on the Electricity system, an important sector within the larger energy sector, and demonstrate long-term visions of a U.S. power system where Renewable technologies, including biomass, geothermal, hydropower, solar, and wind, contribute 80% of 2050 annual Electricity, including 49–55% from wind and solar photovoltaic generation. We present the integration challenges of achieving this high penetration and characterize the options to increase grid flexibility to manage variability. Four high Renewable pathways are modeled and demonstrate the robustness and diversity of Renewable options. We estimate 69–82% annual greenhouse gas emission reductions and 3%–30% incremental Electricity price increases associated with reaching 80%-by-2050 Renewable Electricity relative to reference scenarios. This paper affirms and strengthens similar analysis from the Renewable Electricity Futures study by using an improved model and updated data to better reflect investment and dispatch decisions under current outlooks for the U.S. Electricity sector.
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Renewable Electricity Futures (Presentation)
2013Co-Authors: Trieu MaiAbstract:This presentation summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high Renewable Electricity generation levels in the contiguous United States by 2050.
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Renewable Electricity Futures: Exploration of Up to 80% Renewable Electricity Penetration in the United States (Presentation)
2013Co-Authors: M. Hand, Trieu Mai, D.j. Hostick, E. Demeo, C. A. SchlosserAbstract:This presentation summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high Renewable Electricity generation levels in the contiguous United States by 2050.
Mario Ragwitz - One of the best experts on this subject based on the ideXlab platform.
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Assessing the advantages and drawbacks of government trading of guarantees of origin for Renewable Electricity in Europe
Energy Policy, 2009Co-Authors: Mario Ragwitz, Pablo Del Río González, Gustav ReschAbstract:Abstract The European Commission has proposed a new Renewable Energy Directive, which includes flexibility provisions allowing the cost-effective attainment of the ambitious target for Renewable energy of 20% of energy consumption, which has been set for the year 2020. One of the flexibility provisions currently being considered is to allow countries to reach their individual targets by buying their Renewable Electricity deployment deficit from other countries with a surplus (i.e., with a Renewable Electricity deployment above their targets). This trade is likely to take the form of an exchange in guarantees of origin (GOs). GOs are currently implemented in Member States to fulfil the Renewable Electricity Directive requirement that each country has a system that allows the tracing of the source of each kWh of Renewable Electricity and informs on this source. Although the recent and tiny literature on the analysis of GO trading has focused on trade between firms, the exchange of GOs between governments has not received a comparable attention. This paper analyses the advantages and drawbacks of a system of government trading of GOs with respect to company trading.
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ANALYSIS OF THE IMPACT OF Renewable Electricity GENERATION ON CO 2 EMISSIONS AND POWER PLANT OPERATION IN GERMANY
2008Co-Authors: Frank Sensfuß, Massimo Genoese, Mario RagwitzAbstract:Renewable Electricity generation plays an important role in the German strategy to reduce CO2 emissions. This paper seeks to analyse the impact of Renewable Electricity generation on the CO2 emissions and utilisation of the power plant portfolio in Germany. The analysis based on the PowerACE simulation platform shows that most of the Renewable Electricity generation replaces hard coal fired power plants. The support of Renewable Electricity generation is an important part of the German strategy to reduce CO2 emissions. In Germany the government began stimulating the market penetration of Renewable Electricity generation in the 1990s. After a period of support consisting mainly of research and development programmes, fixed feed-in tariffs were introduced in 1990. Despite several modifications, the principal system of feed-in tariffs has been in place for more than 15 years in Germany. In combination with additional support schemes such as soft loans with reduced interest rates, the German support policy has led to a remarkable growth in Renewable Electricity generation. In 1990, most of the Renewable Electricity generation was based on large hydropower plants. The Electricity generation by other technologies such as wind, photovoltaic and biomass was less than 0.3 TWh. (Bundesministerium fur Umwelt, Naturschutz und Reaktorsicherheit (BMU), 2006). As a consequence of the continuous support, Electricity generation from new Renewable energy sources reached more than 52 TWh in 2006 (Bundesministerium fur Umwelt, Naturschutz und Reaktorsicherheit (BMU), 2007). The most important technology within this development is Electricity generation from wind energy which attained an exponential growth from an installed capacity of 56 MW in 1990 to 20622 MW (Deutsches Windenergie Institut (DEWI), 2007) by the end of 2006. The considerable capacity and the fluctuating character of Electricity generation by wind have triggered a debate on the effect of wind power on the Electricity sector. Since Renewable Electricity generation plays an important role in the strategy to reduce CO2 emissions it is important to assess the CO2 savings created by Renewable Electricity generation. This paper seeks to analyse the impact of the supported Renewable Electricity generation on the CO2 emissions and utilisation of the conventional power plant portfolio.
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ANALYSIS OF THE IMPACT OF Renewable Electricity GENERATION ON CO 2 EMISSIONS AND POWER PLANT OPERATION IN GERMANY
2008Co-Authors: Frank Sensfuß, Massimo Genoese, Mario RagwitzAbstract:Renewable Electricity generation plays an important role in the German strategy to reduce CO2 emissions. This paper seeks to analyse the impact of Renewable Electricity generation on the CO2 emissions and utilisation of the power plant portfolio in Germany. The analysis based on the PowerACE simulation platform shows that most of the Renewable Electricity generation replaces hard coal fired power plants. The support of Renewable Electricity generation is an important part of the German strategy to reduce CO2 emissions. In Germany the government began stimulating the market penetration of Renewable Electricity generation in the 1990s. After a period of support consisting mainly of research and development programmes, fixed feed-in tariffs were introduced in 1990. Despite several modifications, the principal system of feed-in tariffs has been in place for more than 15 years in Germany. In combination with additional support schemes such as soft loans with reduced interest rates, the German support policy has led to a remarkable growth in Renewable Electricity generation. In 1990, most of the Renewable Electricity generation was based on large hydropower plants. The Electricity generation by other technologies such as wind, photovoltaic and biomass was less than 0.3 TWh. (Bundesministerium fur Umwelt, Naturschutz und Reaktorsicherheit (BMU), 2006). As a consequence of the continuous support, Electricity generation from new Renewable energy sources reached more than 52 TWh in 2006 (Bundesministerium fur Umwelt, Naturschutz und Reaktorsicherheit (BMU), 2007). The most important technology within this development is Electricity generation from wind energy which attained an exponential growth from an installed capacity of 56 MW in 1990 to 20622 MW (Deutsches Windenergie Institut (DEWI), 2007) by the end of 2006. The considerable capacity and the fluctuating character of Electricity generation by wind have triggered a debate on the effect of wind power on the Electricity sector. Since Renewable Electricity generation plays an important role in the strategy to reduce CO2 emissions it is important to assess the CO2 savings created by Renewable Electricity generation. This paper seeks to analyse the impact of the supported Renewable Electricity generation on the CO2 emissions and utilisation of the conventional power plant portfolio.
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SIMULATING THE EXPANSION OF Renewable Electricity GENERATION IN GERMANY- AN AGENT-BASED APPROACH
2006Co-Authors: Frank Sensfuß, Mario Ragwitz, Massimo GenoeseAbstract:The German support for Renewable Electricity generation has lead to a very dynamic growth of the installed capacity. This paper presents a new approach to the simulation of the development of Renewable Electricity generation which is based on the concept of agent-based simulation. In a case study a first version of the developed simulation platform is applied to analyse the impact of soft loans on the development of wind energy in Germany.
Ryan Wiser - One of the best experts on this subject based on the ideXlab platform.
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Renewable Electricity Futures Study - Volume One
2016Co-Authors: Maureen Hand, Paul Denholm, G. Brinkman, Garvin Heath, Treui Mai, Samuel F. Baldwin, Debbie Sandor, Ryan WiserAbstract:Renewable Electricity Futures Study - Volume One. This is part of a series of four volumes describing exploring a high-penetration Renewable Electricity future for the United States of America. This data set is provides data for the entire volume one document and includes all data for the charts and graphs included in the document.
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implications of high Renewable Electricity penetration in the u s for water use greenhouse gas emissions land use and materials supply
Applied Energy, 2014Co-Authors: Doug Arent, Trieu Mai, Ryan Wiser, Garvin Heath, Maureen Hand, Samuel F. Baldwin, Jacquelyn Pless, Jordan Macknick, Morgan Bazilian, Adam SchlosserAbstract:Abstract Recent work found that Renewable energy could supply 80% of Electricity demand in the contiguous United States in 2050 at the hourly level. This paper explores some of the implications of achieving such high levels of Renewable Electricity for supply chains and the environment in scenarios with Renewable supply up to such levels. Expanding the Renewable Electricity supply at this scale by 2050 implies annual capacity additions of roughly 20 gigawatts per year (GW/year) over the next decade, rising to roughly 40 GW/year from 2040 to 2050. Given total 2012 Renewable Electricity capacity additions of slightly more than 16 GW, this suggests moderate growth of the related supply chains, averaging overall roughly 4% annual growth to 2040. Transitioning to high Renewable Electricity supply would lead to significant reductions in greenhouse gas emissions and water use, with only modest land-use implications. While Renewable energy expansion implies moderate growth of the Renewable Electricity supply chains, no insurmountable long-term constraints to Renewable Electricity technology manufacturing capacity or materials supply are identified.
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Renewable Electricity Futures Study. Executive Summary
2012Co-Authors: Trieu Mai, D. Sandor, Ryan Wiser, Thomas SchneiderAbstract:The Renewable Electricity Futures (RE Futures) Study investigated the challenges and impacts of achieving very high Renewable Electricity generation levels in the contiguous United States by 2050. The analysis focused on the sufficiency of the geographically diverse U.S. Renewable resources to meet Electricity demand over future decades, the hourly operational characteristics of the U.S. grid with high levels of variable wind and solar generation, and the potential implications of deploying high levels of Renewables in the future. RE Futures focused on technical aspects of high penetration of Renewable Electricity; it did not focus on how to achieve such a future through policy or other measures. Given the inherent uncertainties involved with analyzing alternative long-term energy futures as well as the multiple pathways that might be taken to achieve higher levels of Renewable Electricity supply, RE Futures explored a range of scenarios to investigate and compare the impacts of Renewable Electricity penetration levels (30%-90%), future technology performance improvements, potential constraints to Renewable Electricity development, and future Electricity demand growth assumptions. RE Futures was led by the National Renewable Energy Laboratory (NREL) and the Massachusetts Institute of Technology (MIT).
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Renewable Electricity Futures Study. Volume 1. Exploration of High-Penetration Renewable Electricity Futures
2012Co-Authors: Trieu Mai, Paul Denholm, D. Sandor, Ryan Wiser, G. Brinkman, Garvin Heath, D.j. Hostick, Naim Darghouth, Adam Schlosser, K. StrzepekAbstract:The Renewable Electricity Futures (RE Futures) Study investigated the challenges and impacts of achieving very high Renewable Electricity generation levels in the contiguous United States by 2050. The analysis focused on the sufficiency of the geographically diverse U.S. Renewable resources to meet Electricity demand over future decades, the hourly operational characteristics of the U.S. grid with high levels of variable wind and solar generation, and the potential implications of deploying high levels of Renewables in the future. RE Futures focused on technical aspects of high penetration of Renewable Electricity; it did not focus on how to achieve such a future through policy or other measures. Given the inherent uncertainties involved with analyzing alternative long-term energy futures as well as the multiple pathways that might be taken to achieve higher levels of Renewable Electricity supply, RE Futures explored a range of scenarios to investigate and compare the impacts of Renewable Electricity penetration levels (30%-90%), future technology performance improvements, potential constraints to Renewable Electricity development, and future Electricity demand growth assumptions. RE Futures was led by the National Renewable Energy Laboratory (NREL) and the Massachusetts Institute of Technology (MIT).
Samuel F. Baldwin - One of the best experts on this subject based on the ideXlab platform.
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Renewable Electricity Futures Study - Volume One
2016Co-Authors: Maureen Hand, Paul Denholm, G. Brinkman, Garvin Heath, Treui Mai, Samuel F. Baldwin, Debbie Sandor, Ryan WiserAbstract:Renewable Electricity Futures Study - Volume One. This is part of a series of four volumes describing exploring a high-penetration Renewable Electricity future for the United States of America. This data set is provides data for the entire volume one document and includes all data for the charts and graphs included in the document.
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implications of high Renewable Electricity penetration in the u s for water use greenhouse gas emissions land use and materials supply
Applied Energy, 2014Co-Authors: Doug Arent, Trieu Mai, Ryan Wiser, Garvin Heath, Maureen Hand, Samuel F. Baldwin, Jacquelyn Pless, Jordan Macknick, Morgan Bazilian, Adam SchlosserAbstract:Abstract Recent work found that Renewable energy could supply 80% of Electricity demand in the contiguous United States in 2050 at the hourly level. This paper explores some of the implications of achieving such high levels of Renewable Electricity for supply chains and the environment in scenarios with Renewable supply up to such levels. Expanding the Renewable Electricity supply at this scale by 2050 implies annual capacity additions of roughly 20 gigawatts per year (GW/year) over the next decade, rising to roughly 40 GW/year from 2040 to 2050. Given total 2012 Renewable Electricity capacity additions of slightly more than 16 GW, this suggests moderate growth of the related supply chains, averaging overall roughly 4% annual growth to 2040. Transitioning to high Renewable Electricity supply would lead to significant reductions in greenhouse gas emissions and water use, with only modest land-use implications. While Renewable energy expansion implies moderate growth of the Renewable Electricity supply chains, no insurmountable long-term constraints to Renewable Electricity technology manufacturing capacity or materials supply are identified.
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Renewable Electricity Futures for the United States
IEEE Transactions on Sustainable Energy, 2014Co-Authors: Trieu Mai, Paul Denholm, D. Sandor, M. Maureen Hand, Samuel F. Baldwin, Ryan H. Wiser, Greg L. Brinkman, Doug J. Arent, Gian Porro, Donna J. HostickAbstract:This paper highlights the key results from the Renewable Electricity (RE) Futures Study. It is a detailed consideration of Renewable Electricity in the United States. The paper focuses on technical issues related to the operability of the U.S. Electricity grid and provides initial answers to important questions about the integration of high penetrations of Renewable Electricity technologies from a national perspective. The results indicate that the future U.S. Electricity system that is largely powered by Renewable sources is possible and the further work is warranted to investigate this clean generation pathway. The central conclusion of the analysis is that Renewable Electricity generation from technologies that are commercially available today, in combination with a more flexible electric system, is more than adequate to supply 80% of the total U.S. Electricity generation in 2050 while meeting Electricity demand on an hourly basis in every region of the United States.
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Envisioning a Renewable Electricity future for the United States
Energy, 2014Co-Authors: Trieu Mai, Maureen Hand, David Mulcahy, Samuel F. BaldwinAbstract:Abstract This paper presents high Renewable Electricity penetration scenarios in the United States using detailed capacity expansion modeling that is designed to properly account for the variability and uncertainty of wind and solar resources. The scenarios focus solely on the Electricity system, an important sector within the larger energy sector, and demonstrate long-term visions of a U.S. power system where Renewable technologies, including biomass, geothermal, hydropower, solar, and wind, contribute 80% of 2050 annual Electricity, including 49–55% from wind and solar photovoltaic generation. We present the integration challenges of achieving this high penetration and characterize the options to increase grid flexibility to manage variability. Four high Renewable pathways are modeled and demonstrate the robustness and diversity of Renewable options. We estimate 69–82% annual greenhouse gas emission reductions and 3%–30% incremental Electricity price increases associated with reaching 80%-by-2050 Renewable Electricity relative to reference scenarios. This paper affirms and strengthens similar analysis from the Renewable Electricity Futures study by using an improved model and updated data to better reflect investment and dispatch decisions under current outlooks for the U.S. Electricity sector.
