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What do hexbears think about pumped hydropower storage?
(hexbear.net)
To make solar power viable, we need a solution for overnight energy storage.
Batteries are complicated.
Do you know what isn't? Water go up. 
Natural gas? 💨
China trying I guess? They are more invested in fast reactors and light water reactors and see them as purely experimental considering what happened in Germany with the THTR.