Low Carbon Hydrogen Standard

Source: International Energy Agency
Last updated: 05 September 2025
The Low Carbon Hydrogen Standard sets a maximum threshold for the greenhouse gas emissions allowed in the production of hydrogen to be considered "low carbon". This threshold is 20 gCO2eq/MJ of hydrogen, or about 2.4 kgCO2eq/kgH2, calculated up to the point of production; A methodology for GHG emissions
A spreadsheet called Hydrogen Emissions Calculator (HEC) has also been made available.
The certification scheme will be implemented by 2025.

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