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Pumped Hydro Energy Storage

Interesting article about the current state of pumped hydro energy storage, where you pump water uphill while the sun is generating lots of power during the day and then let the water flow back downhill at night to generate electricity. https://www.npr.org/2022/10/14/1126523766/water-batteries-could-store-solar-and-wind-power-for-when-its-needed

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