Fig. 4: Life cycle emissions of hydrogen in steel manufacturing (A) and heavy-duty transport (B).
From: Effect of hydrogen leakage on the life cycle climate impacts of hydrogen supply chains
The results with (dark gray) and without (light gray) considering the indirect warming impacts of hydrogen indicate a net decrease in greenhouse gas emissions when using hydrogen for steel production and heavy-duty transport. The blue horizontal line represents the conventional average carbon intensity for each end use, notably 1860 kgCO2e/t-steel and 0.30 kgCO2e/(t-km) trucking28,32,45.
