> Hydrogen embrittles metal that pipelines and storage facility wells are made of, limiting usage in existing infrastructure.

This is incorrect with the type of hydrogen we would use and store for energy. Elemental hydrogen or hydrogen ions (H+) is an unstable state of hydrogen that exists in a very limited window after a chemical reaction who’s byproduct is a free hydrogen ion. H2 (two hydrogen atoms stuck together) is an electrochemically stable compound that naturally occurs and is specifically what we talk about in the context of gaseous hydrogen. We have containment vessels that do not leak it because it’s way bigger than a single hydrogen ion and it’s even larger than helium. H2 does not eat away at what contains it, either.