Hydrogen gas and related production processes exported to the EU.
Calculate my Hydrogen exposure →Emissions scope
Direct only
GHGs covered
CO₂
Functional unit
Tonnes product
Indirect electricity
Excluded — Annex II
Hydrogen exporters must report direct embedded emissions only. The calculation methodology varies significantly by production route — steam methane reforming produces high direct emissions, while electrolysis produces near-zero direct emissions. Indirect electricity emissions are excluded under Annex II.
~8.50 tCO₂e/t
Grey hydrogenNatural gas reacted with steam to produce hydrogen. Current dominant production method globally. High direct emissions.
~0.50 tCO₂e/t
Green hydrogenWater split using electricity to produce hydrogen. Near-zero direct emissions — electricity excluded from CBAM scope.
~7.50 tCO₂e/t
Blue hydrogen potentialCombined reforming process. Similar emissions profile to SMR but more efficient at scale.
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