Again, nobody seems to be making hydrogen from renewable energy at scale yet despite there being a real industrial market for it. Including steel reduction, which would be a great use-case! But it's not happening because water cracking to hydrogen has a really high capital cost.
You'll get hundreds if not thousands of references.
1. You made the claim. It's appropriate that you do the work to back it up.
2. A post is read more times than it is written. If you (the author) do the work, the work gets done once. If we, the readers, do the work, it's done multiple times.
So both efficiency and "burden of proof" say that you should do that search. In fact, you should have done it about 10 or 20 posts earlier.
It's happening everywhere now. Like I said, this is akin to someone demanding proof that there's war in Ukraine right now.
I would like to see some home system that makes and stores H2 with excess PV — such a thing certainly feels like it should be possible, given how easy hydrogen is to make, but I'm not a chemist or a civil engineer, so I'll leave that to those who know what can go wrong and how to fix it.