Sorry to report, hydrogen is also hopeless. It’s cool tech, but making it work in practice is hopeless because it diffuses straight through every container you try and keep it in, and achieving reasonable energy densities requires cryogenic storage.
Also, developments have been stalling out relative to electrical solutions because of this and because of the heavy investment in electrics.
I can only see it really working in practice in niche applications where you will be close to cryogenic facilities.
Locking hydrogen up in ammonia is what the industry looks to be moving to to avoid the problem you describe.
Also, look up the 7 Hydrogen Hubs in the US as an example of this market getting started. There are no downsides to developing a hydrogen market if we’re going to have oodles of excess renewable energy.
Locking hydrogen up in ammonia is what the industry looks to be moving to to avoid the problem you describe.
I believe we’re still using more hydrogen to make industrial ammonia than that we produce from green sources, so I guess even if we only switch over ammonia production without worrying about fuel cells or hydrogen vehicles or power generation, we still come out ahead.
Then there’s the hydrogen used in oil refining that, iirc, is still mostly sourced from methane, but I’m hesitant to suggest we replace that with green hydrogen since if you want to be carbon-negative the oil refining will have to go down A LOT anyway.
Anyway, I guess my point is that hydrogen is an important commodity for all sorts of things. Before we start burning it for energy it’s easier to use it as is in industrial processes. The methane we save that way (that would be used to produce industrial hydrogen) we can burn as is in existing gas power plants.
But this is the kind of pragmatic common sense thing that gets no one excited.
