In terms of carbon emissions per unit of hydrogen, the threshold for low-carbon hydrogen is 14.51 kgCO2e/kgH2, and the threshold for clean hydrogen and renewable hydrogen is 4.9 kgCO2e/kgH2. Renewable hydrogen also requires the hydrogen production energy to be renewable energy.
T/CAB 0078-2020 history
2020T/CAB 0078-2020 Standard and evaluation of low-carbon hydrogen, clean hydrogen and renewable hydrogen