Hydrogen is a versatile energy vector that can enable emission reductions in hard-to-decarbonize industrial sectors. Electrolytic hydrogen can provide low-or zero-carbon heat via its combustion for applications where direct electrification is challenging, as well as serve to displace fossil hydrogen use as a feedstock in industry, e.g., production of chemicals, steel, cement, lime (CaO), metals, and glass . The chemical and refining industry is already the largest consumer of hydrogen , primarily as a critical feedstock in oil refining and production of commodity chemicals like ammonia and methanol . However, these processes produce hydrogen from natural gas reforming without carbon capture and storage (CCS). Alternatively, water electrolysis can produce hydrogen with a lower carbon footprint. Because of its potential for decarbonization, more than 80 electrolytic hydrogen projects with capacities over 100 MW and more than 10 projects over 1 GW were under development worldwide in 2021 .