Emissions of hydrogen fuel produced through onsite electrolysis in the United Kingdom in 2020, with a forecast for 2030*
(in grams of carbon dioxide equivalent per megajoule)
Characteristic
Emissions due to electrolyzer stack electricity use
Dispensing
Other**
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* Electrolysis using grid electricity. Values are based on hydrogen production at lower heating value.
** Includes electricity use of ATR, SMR and gasification plants, transport and processing of municipal solid waste to form refuse derived fuel (RDF), CO² transport and fugitive emissions of hydrogen.
Citation formats
Green hydrogen fuel carbon intensity across the supply chain in the UK 2020-2030
In the United Kingdom, hydrogen fuel created through onsite electrolysis using grid electricity had an emission intensity of ** grams of CO² per megajoule in 2020. Green hydrogen's emission intensity is expected to decrease to ** grams of CO² per megajoule in 2030 due to reduced emissions from across the supply chain - including stack electricity use and dispensing.
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Element Energy. (August 1, 2021). Emissions of hydrogen fuel produced through onsite electrolysis in the United Kingdom in 2020, with a forecast for 2030* (in grams of carbon dioxide equivalent per megajoule) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 29, 2026, from /statistics/1260557/uk-green-hydrogen-fuel-supply-chain-emissions/
Element Energy. "Emissions of hydrogen fuel produced through onsite electrolysis in the United Kingdom in 2020, with a forecast for 2030* (in grams of carbon dioxide equivalent per megajoule)." Chart. August 1, 2021. ÌÇÐÄÆƽâ°æ. Accessed July 29, 2026. /statistics/1260557/uk-green-hydrogen-fuel-supply-chain-emissions/
Element Energy. (2021). Emissions of hydrogen fuel produced through onsite electrolysis in the United Kingdom in 2020, with a forecast for 2030* (in grams of carbon dioxide equivalent per megajoule). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 29, 2026. /statistics/1260557/uk-green-hydrogen-fuel-supply-chain-emissions/
Element Energy. "Emissions of Hydrogen Fuel Produced through Onsite Electrolysis in The United Kingdom in 2020, with a Forecast for 2030* (in Grams of Carbon Dioxide Equivalent per Megajoule)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 1 Aug 2021, /statistics/1260557/uk-green-hydrogen-fuel-supply-chain-emissions/
Element Energy, Emissions of hydrogen fuel produced through onsite electrolysis in the United Kingdom in 2020, with a forecast for 2030* (in grams of carbon dioxide equivalent per megajoule) ÌÇÐÄÆƽâ°æ, /statistics/1260557/uk-green-hydrogen-fuel-supply-chain-emissions/ (last visited July 29, 2026)
Emissions of hydrogen fuel produced through onsite electrolysis in the United Kingdom in 2020, with a forecast for 2030* (in grams of carbon dioxide equivalent per megajoule) [Graph], Element Energy, August 1, 2021. [Online]. Available: /statistics/1260557/uk-green-hydrogen-fuel-supply-chain-emissions/
