Hydrogen and Pumped Hydro

Pumped hydro is an old technology that may date back to the twenties, or maybe even earlier. It was deployed here and in europe when it was decided, like in the early fifties, that nuclear power was going to dominate. Hydrogen produced by splitting water by electrolysis can produce hydrogen with no carbon emissions. And again, they're underground caverns, you can store enough hydrogen to generate electricity for long periods of time. Lithium-ion batteries don't make a lot of sense beyond a few hours of duration.

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