Hydrogen will always be needed to produce chemicals, as in the Haber-Bosch process that renders modern agricultural productivity possible: https://en.wikipedia

Hydrogen will always be needed to produce chemicals, as in the Haber-Bosch process that renders modern agricultural productivity possible: https://en.wikipedia.org/wiki/Haber_process https://en.wikipedia.org/wiki/Haber_process Decarbonizing primary steel production could consume vast quantities of electrolytic hydrogen for reducing iron oxide ores to metallic iron. Underground storage of hydrogen for subsequent combustion in gas turbines is also one of the most promising ways to achieve seasonal electricity storage, for e.g. powering a country through the winter with excess renewable electricity generated in the spring. There's currently a large scale pilot program for this concept under construction in Utah: https://aces-delta.com/ https://aces-delta.com/