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Q. I’m confused about renewable energy storage. Last I checked, renewable energy was but a small fraction of total electricity generation on our grid. I don’t think we have ever generated SO much renewable energy at one time that it became necessary to choose between storing it or grounding it. Shouldn’t we be using absolutely every kilowatt-hour of renewable energy right when it’s generated? And am I incorrect in assuming that the necessity for storage won’t even arise for decades in the future?

Christian B.
Los Alamitos, Calif.