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Hydrogen locomotive
(www.money.pl)
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this post was submitted on 17 Sep 2023
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I personally see hydrogen as a great energy dense storage solution to utilize excess generation from solar/wind/etc.
But we're a long way off from that, so it seems the consensus is that if anything, hydrogen research should primarily be in preparation for a time when it could be utilized reasonably. That may be 20-30 years out, or more. Idk.
There's a ton of options there besides hydrogen. Flow batteries are far more efficient than hydrogen, and there's no particular barrier to mass production at this point. Then there's anything from flywheels, other battery chemistries that are too heavy for EVs, or just pumping water uphill.
We need options there today. We want to be on 80% renewables by 2030 in industrialized countries, and that will require some kind of storage solution. Fortunately, we already have quite a few.
Actually, we're not a long way off from that. Hydrogen production facilities utilizing (excess) renewable electricity output are under construction as we speak. For example, a large project in Kazakhstan (which has large stretches of windy, sunny and empty steppes) is aiming to be online in 2030 with 30 GW of production going towards green hydrogen.