On the climate benefit of a coal-to-gas shift in Germany’s electric power sector

Abstract Methane emissions along the natural gas supply chain are critical for the climate benefit achievable by fuel switching from coal to natural gas in the electric power sector. For Germany, one of the world’s largest primary energy consumers, with a coal and natural gas share in the power sect...

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Autores principales: Stefan Ladage, Martin Blumenberg, Dieter Franke, Andreas Bahr, Rüdiger Lutz, Sandro Schmidt
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Lenguaje:EN
Publicado: Nature Portfolio 2021
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Acceso en línea:https://doaj.org/article/d6b83e14a7864933a86f0704030bd571
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spelling oai:doaj.org-article:d6b83e14a7864933a86f0704030bd5712021-12-02T18:24:53ZOn the climate benefit of a coal-to-gas shift in Germany’s electric power sector10.1038/s41598-021-90839-72045-2322https://doaj.org/article/d6b83e14a7864933a86f0704030bd5712021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-90839-7https://doaj.org/toc/2045-2322Abstract Methane emissions along the natural gas supply chain are critical for the climate benefit achievable by fuel switching from coal to natural gas in the electric power sector. For Germany, one of the world’s largest primary energy consumers, with a coal and natural gas share in the power sector of 35% and 13%, respectively, we conducted fleet-conversion modelling for reference year 2018, taking domestic and export country specific greenhouse gas (GHG)-emissions in the natural gas and coal supply chains into account. Methane leakage rates below 4.9% (GWP20; immediate 4.1%) in the natural gas supply chain lead to overall reduction of CO2-equivalent GHG-emissions by fuel switching. Supply chain methane emissions vary significantly for the import countries Russia, Norway and The Netherlands, yet for Germany’s combined natural gas mix lie with << 1% far below specific break-even leakage rates. Supply chain emission scenarios demonstrate that a complete shift to natural gas would emit 30–55% (GWP20 and GWP100, respectively) less CO2-equivalent GHG than from the coal mix. However, further abating methane emissions in the petroleum sector should remain a prime effort, when considering natural gas as bridge fuel on the path to achieve the Paris climate goals.Stefan LadageMartin BlumenbergDieter FrankeAndreas BahrRüdiger LutzSandro SchmidtNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Stefan Ladage
Martin Blumenberg
Dieter Franke
Andreas Bahr
Rüdiger Lutz
Sandro Schmidt
On the climate benefit of a coal-to-gas shift in Germany’s electric power sector
description Abstract Methane emissions along the natural gas supply chain are critical for the climate benefit achievable by fuel switching from coal to natural gas in the electric power sector. For Germany, one of the world’s largest primary energy consumers, with a coal and natural gas share in the power sector of 35% and 13%, respectively, we conducted fleet-conversion modelling for reference year 2018, taking domestic and export country specific greenhouse gas (GHG)-emissions in the natural gas and coal supply chains into account. Methane leakage rates below 4.9% (GWP20; immediate 4.1%) in the natural gas supply chain lead to overall reduction of CO2-equivalent GHG-emissions by fuel switching. Supply chain methane emissions vary significantly for the import countries Russia, Norway and The Netherlands, yet for Germany’s combined natural gas mix lie with << 1% far below specific break-even leakage rates. Supply chain emission scenarios demonstrate that a complete shift to natural gas would emit 30–55% (GWP20 and GWP100, respectively) less CO2-equivalent GHG than from the coal mix. However, further abating methane emissions in the petroleum sector should remain a prime effort, when considering natural gas as bridge fuel on the path to achieve the Paris climate goals.
format article
author Stefan Ladage
Martin Blumenberg
Dieter Franke
Andreas Bahr
Rüdiger Lutz
Sandro Schmidt
author_facet Stefan Ladage
Martin Blumenberg
Dieter Franke
Andreas Bahr
Rüdiger Lutz
Sandro Schmidt
author_sort Stefan Ladage
title On the climate benefit of a coal-to-gas shift in Germany’s electric power sector
title_short On the climate benefit of a coal-to-gas shift in Germany’s electric power sector
title_full On the climate benefit of a coal-to-gas shift in Germany’s electric power sector
title_fullStr On the climate benefit of a coal-to-gas shift in Germany’s electric power sector
title_full_unstemmed On the climate benefit of a coal-to-gas shift in Germany’s electric power sector
title_sort on the climate benefit of a coal-to-gas shift in germany’s electric power sector
publisher Nature Portfolio
publishDate 2021
url https://doaj.org/article/d6b83e14a7864933a86f0704030bd571
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