The Experts below are selected from a list of 32073 Experts worldwide ranked by ideXlab platform
Iain Macgill - One of the best experts on this subject based on the ideXlab platform.
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assessing the impact of wind Generation on wholesale prices and generator dispatch in the australian national electricity market
Energy Policy, 2013Co-Authors: Sam Forrest, Iain MacgillAbstract:Abstract Growing climate change and energy security concerns are driving major wind energy deployment in electricity industries around the world. Despite its many advantages, growing penetrations of this highly variable and somewhat unpredictable energy source pose new challenges for electricity industry operation. One issue receiving growing attention is the so-called ‘merit order effect’ of wind Generation in wholesale electricity markets. Wind has very low operating costs and therefore tends to displace higher cost conventional Generation from market dispatch, reducing both wholesale prices and conventional plant outputs. This paper extends the current literature on this effect through an empirical study employing a range of econometric techniques to quantify the impacts of growing wind penetrations in the Australian National Electricity Market (NEM). The results suggest that wind is having a marked impact on spot market prices and, while wind is primarily offsetting higher operating cost gas Generation, it is now also significantly reducing dispatch of emissions intensive brown Coal Generation. Great care needs to be taken in extrapolating these results to longer-term implications, however, the study does propose a methodology for assessing this effect, highlights the impacts that wind is already having on NEM outcomes and suggests promising directions for future research.
Sam Forrest - One of the best experts on this subject based on the ideXlab platform.
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assessing the impact of wind Generation on wholesale prices and generator dispatch in the australian national electricity market
Energy Policy, 2013Co-Authors: Sam Forrest, Iain MacgillAbstract:Abstract Growing climate change and energy security concerns are driving major wind energy deployment in electricity industries around the world. Despite its many advantages, growing penetrations of this highly variable and somewhat unpredictable energy source pose new challenges for electricity industry operation. One issue receiving growing attention is the so-called ‘merit order effect’ of wind Generation in wholesale electricity markets. Wind has very low operating costs and therefore tends to displace higher cost conventional Generation from market dispatch, reducing both wholesale prices and conventional plant outputs. This paper extends the current literature on this effect through an empirical study employing a range of econometric techniques to quantify the impacts of growing wind penetrations in the Australian National Electricity Market (NEM). The results suggest that wind is having a marked impact on spot market prices and, while wind is primarily offsetting higher operating cost gas Generation, it is now also significantly reducing dispatch of emissions intensive brown Coal Generation. Great care needs to be taken in extrapolating these results to longer-term implications, however, the study does propose a methodology for assessing this effect, highlights the impacts that wind is already having on NEM outcomes and suggests promising directions for future research.
Scott Samuelsen - One of the best experts on this subject based on the ideXlab platform.
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the role of natural gas and its infrastructure in mitigating greenhouse gas emissions improving regional air quality and renewable resource integration
Progress in Energy and Combustion Science, 2018Co-Authors: Michael Mac Kinnon, Jacob Brouwer, Scott SamuelsenAbstract:Abstract The pursuit of future energy systems that can meet electricity demands while supporting the attainment of societal environment goals, including mitigating climate change and reducing pollution in the air, has led to questions regarding the viability of continued use of natural gas. Natural gas use, particularly for electricity Generation, has increased in recent years due to enhanced resource availability from non-traditional reserves and pressure to reduce greenhouse gasses (GHG) from higher-emitting sources, including Coal Generation. While lower than Coal emissions, current natural gas power Generation strategies primarily utilize combustion with higher emissions of GHG and criteria pollutants than other low-carbon Generation options, including renewable resources. Furthermore, emissions from life cycle stages of natural gas production and distribution can have additional detrimental GHG and air quality (AQ) impacts. On the other hand, natural gas power Generation can play an important role in supporting renewable resource integration by (1) providing essential load balancing services, and (2) supporting the use of gaseous renewable fuels through the existing infrastructure of the natural gas system. Additionally, advanced technologies and strategies including fuel cells and combined cooling heating and power (CCHP) systems can facilitate natural gas Generation with low emissions and high efficiencies. Thus, the role of natural gas Generation in the context of GHG mitigation and AQ improvement is complex and multi-faceted, requiring consideration of more than simple quantification of total or net emissions. If appropriately constructed and managed, natural gas Generation could support and advance sustainable and renewable energy. In this paper, a review of the literature regarding emissions from natural gas with a focus on power Generation is conducted and discussed in the context of GHG and AQ impacts. In addition, a pathway forward is proposed for natural gas Generation and infrastructure to maximize environmental benefits and support renewable resources in the attainment of emission reductions.
James J Dooley - One of the best experts on this subject based on the ideXlab platform.
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the value of post combustion carbon dioxide capture and storage technologies in a world with uncertain greenhouse gas emissions constraints
International Journal of Greenhouse Gas Control, 2009Co-Authors: Marshall Wise, James J DooleyAbstract:Abstract By analyzing how the largest CO2 emitting electricity-generating region in the United States, the East Central Area Reliability Coordination Agreement (ECAR), responds to hypothetical constraints on greenhouse gas emissions, the authors demonstrate that there is an enduring role for post-combustion CO2 capture technologies. The utilization of pulverized Coal Generation with carbon dioxide capture and storage (PC + CCS) technologies is particularly significant in a world where there is uncertainty about the future evolution of climate policy and in particular uncertainty about the rate at which the climate policy will become more stringent. The paper's analysis shows that within this one large, heavily Coal-dominated electricity-generating region, as much as 20–40 GW of PC + CCS could be operating before the middle of this century. Depending upon the state of PC + CCS technology development and the evolution of future climate policy, the analysis shows that these CCS systems could be mated to either pre-existing PC units or PC units that are currently under construction, announced and planned units, as well as PC units that could continue to be built for a number of decades even in the face of a climate policy. In nearly all the cases analyzed here, these PC + CCS Generation units are in addition to a much larger deployment of CCS-enabled Coal-fueled integrated gasification combined cycle (IGCC) power plants. The analysis presented here shows that the combined deployment of PC + CCS and IGCC + CCS units within this one region of the U.S. could result in the potential capture and storage of between 3.2 and 4.9 Gt of CO2 before the middle of this century in the region's deep geologic storage formations.
Tanveer Ahmad - One of the best experts on this subject based on the ideXlab platform.
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a critical review of comparative global historical energy consumption and future demand the story told so far
Energy Reports, 2020Co-Authors: Tanveer Ahmad, Dongdong ZhangAbstract:Abstract This review presents a critical combined energy analysis of demand in developed/developing countries, including the load requirements of the various business sectors. It summarizes on-demand time-series, energy supply, overall trade in gas, oil, electricity, Coal, and renewable energy (e.g., wind, solar, geothermal, tidal, etc.) as well as global carbon dioxide (CO2) emissions. The duration of the review is selected between the energy supply and demand forecast from 1990 to 2040. Multi-energy approaches include primary energy Generation, consumption, gross domestic product (GDP) energy intensity, the total trade balance of crude oil production, production of natural gas, trade balance and use of natural gas, production of lignite and Coal, demand for trade in lignite and Coal, Generation and use of electricity, the share of renewables in power Generation, total percentage of solar energy. Geographic coverage covered the global energy demand of the Organization for Economic Co-operation and Development (OECD), the group of seven (G7), Brazil, Russia, India, China, and South Africa (BRICS), European Union, Europe, North America, Commonwealth of Independent States (CIS), Asia, Latin America, Pacific, Middle-East and Africa. Market individuals and cooperative policymakers communicate in a variety of ways: our review and its impact on energy trade, social development, economic and climate change, which is then presented in a deeper way, in the future energy outlook. The findings of the review make it clear that there is a great deal of future global energy demand until 2040 in different situations: new aspects of policymaking, the requirement is about 15% lower in the 450-scenario, and 10% higher in the current energy policy scenario.