• Corkyskog@sh.itjust.works
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    8 hours ago

    How efficient is making hydrogen? If you don’t need a huge facility, it might be easier to just store it that way, so you don’t need giant lakes everywhere.

    • Tayb@lemmy.world
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      6 hours ago

      Less efficient than pumped hydro. Appears to be about 40% for green hydrogen in the round trip vs 80% for pumped hydro with a quick google search.

      • Corkyskog@sh.itjust.works
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        5 hours ago

        I am curious what’s involved in the “round trip”? Do you mean to fuel other machines directly with hydrogen?

        • Tayb@lemmy.world
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          3 hours ago

          Energy to hydrogen back to energy, so electrolysis to a hydrogen fuel cell. I think burning hydrogen directly is even less efficient.