China Hydrogen Energy Alliance (CHEA) is making progress towards settling on a final set of guidelines that would clarify how the carbon footprint of green hydrogen created from electrolysis will be calculated. The US on the other hand is still tinkering with the implementation of the famous – perhaps infamous at this stage – Section 45V which dictates who will qualify for the full $3/kg IRA (Inflation Reduction Act) subsidy. CHEA calls it the “Carbon Footprint Evaluation Methods and Requirements for Alkaline Water Electrolysis Hydrogen Production Systems,” as the Chinese market is dominated by ALK (alkaline) technology, but the Alliance is assessing PEM (proton exchange membrane) as well. According to Chinese media reports, CHEA is testing on four different ALK…