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DOI	10.1016/j.enpol.2022.112794
	Decarbonization strategies for Switzerland considering embedded greenhouse gas emissions in electricity imports
	Rüdisüli M.; Romano E.; Eggimann S.; Patel M.K.
发表日期	2022
ISSN	0301-4215
卷号	162
英文摘要	Decarbonizing the energy system by electrification of heat and transport is only effective when using low-carbon electricity sources. As many countries such as Switzerland rely on imported electricity to meet their demand, the greenhouse gas (GHG) content of electricity imports must be correctly accounted for. By assuming an average GHG content for each amount imported, impacts of electricity required in peak periods are underestimated because additional (marginal) demand is primarily met with fossil power plants. This study employs a model to capture marginal GHG contents of imported electricity from a direct and indirect (life-cycle) perspective at an hourly resolution. Implications on GHG are explored for various electricity demand and supply scenarios including electrification of heat and transport, large-scale expansion of renewables, and nuclear phase-out. We find that depending on the scenario, the average GHG intensity of consumed electricity may double, while diurnal and seasonal variations are even larger. Nonetheless, results show substantial GHG mitigation of up to 45% with electrification in case of deploying a diversified electricity generation portfolio including photovoltaics and wind. For optimal GHG mitigation, short-term flexibility as provided by hydropower is necessary to manage electricity surpluses. The main challenge, however, surrounds seasonal energy storage including sector coupling. © 2022 The Authors
英文关键词	Electrification; GHG mitigation; Marginal model; Renewables; Storage; Switzerland
语种	英语
scopus关键词	Electric energy storage; Electric utilities; Fossil fuel power plants; Gas emissions; Life cycle; Decarbonisation; Decarbonising; Electricity imports; Gas content; Greenhouse gas emissions; Greenhouse gas mitigation; Greenhouses gas; Marginal models; Renewables; Switzerland; Greenhouse gases; alternative energy; carbon emission; electricity supply; electrification; energy storage; greenhouse gas; import; model; strategic approach; Switzerland
来源期刊	Energy Policy
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/256356
作者单位	Urban Energy Systems Laboratory, Swiss Federal Laboratories for Materials Science and Technology, Empa, Dübendorf, Switzerland; Institute for Environmental Sciences and Department F.-A. Forel for Environmental and Aquatic Sciences, Energy Systems Group, University of Geneva, Switzerland
推荐引用方式 GB/T 7714	Rüdisüli M.,Romano E.,Eggimann S.,et al. Decarbonization strategies for Switzerland considering embedded greenhouse gas emissions in electricity imports[J],2022,162.
APA	Rüdisüli M.,Romano E.,Eggimann S.,&Patel M.K..(2022).Decarbonization strategies for Switzerland considering embedded greenhouse gas emissions in electricity imports.Energy Policy,162.
MLA	Rüdisüli M.,et al."Decarbonization strategies for Switzerland considering embedded greenhouse gas emissions in electricity imports".Energy Policy 162(2022).