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.

[–] Resonosity@lemmy.world 1 points 5 months ago (1 children)

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.

[–] vzq@lemmy.blahaj.zone 0 points 5 months ago (1 children)

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.

[–] Resonosity@lemmy.world 1 points 5 months ago* (last edited 5 months ago)

I mean, if anything, the fact that the Oil & Gas industry uses hydrogen for refining means that there is a possible, robust market for green hydrogen to get into (don't like this because it means oil is still the focus, when we need to consider green chemistry and stop with oil).

The O&G industry also helped usher in solar PV at an early stage because of the needs of remote power in hazardous environments such as offshore rigs and near potential sources of release like oil tanks (I used to work as an engineer in O&G myself).

There's actually a lot of work by GE and Mitsubishi to start shipping new gas turbines to be capable of firing a non-zero amount of hydrogen in addition to natural gas. I think some plants are even capable of doing 50/50 hydrogen/natural gas, with that former number increasing year over year.

Hydrogen could outstrip conventional fuels someday. The bottleneck has always been supply though.

If renewables are so abundant and cheap, then we'll finally have a reason to deploy hydrogen infrastructure on a massive scale (at least in the US). Hell, you look at the major inverter manufacturers for utility PV like Sungrow, and they have containerized electrolyzers ready for implementation. I haven't done a market survey, but if they're in the game, then so are other players.

If you want to be convinced of the progress of hydrogen, I would look into the project that Sargent & Lundy is working on in Utah. They're planning on using a salt cavern for hydrogen storage, and I believe there is a CCGT onsite as well to make use of the generation.

Hydrogen is even on the minds of offshore wind developers like Siemens.

The substance isn't doomed like others in this thread make it out. There is active interest in the market to develop a supply chain and economy.

Edit: The one thing I don't see a lot of people talk about though is where the raw materials for this hydrogen will come from... Likely groundwater unfortunately. Since groundwater is already a highly sought after resource for consumption and agriculture, I'm not sure if hydrogen in this way will take off. This is why offshore hydrogen seems to be more promising, but as we see with wave and tidal power, the ocean environment just sucks for any commercialization.

It's an uphill battle, but the same can be said for the climate crisis in general. Hope we make enough progress before it's too late.