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by Caveman_Coder 3189 days ago
"There are many people working on storage—batteries are a form of storage, and there’s a few others, like compressed air, hot metals. But it’s not at all clear that we will get grid-scale economic storage."

Grid-scale storage is the key. Duke Energy is one of the leaders in this effort, at least among the major utilities [1].

[1] https://news.ycombinator.com/item?id=15307767