China is building a 100GW renewable capacity project by the Yalong river. This will power 100 million households, the equivalent of the entire US population.

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World’s largest solar-hydro plant creates power on Tibetan Plateau
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Too lazy to read. Is it one of those device that converts solar power into potential energy of water?

Yeah, looks like that's how it works. They store up potential energy when the panels work, and then release it as needed. This solves the storage problem associated with solar.

a 1kwh LifePo4 battery costs almost 220$, so batteries are still expensive as heck. water dams or hydrogen production are good ways of storing solar energy

And with batteries you only have a couple thousand charge cycles. With hydro-electric I feel like it's limitless.