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China built a 40-story tower that stores wind power by stacking concrete (boingboing.net)
submitted 1 month ago by to c/technology@hexbear.net
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[–] 1 point 1 month ago (1 child)

Doesn't always have to be the same water, where this would have to be the same concrete

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  • [–] [S] 4 points 1 month ago (1 child)

    I'm not sure why it would be a problem that it's the same concrete though

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  • [–] 1 point 1 month ago (1 child)

    I guess my thought is if you used water it could be hooked up to a larger reservoir and just pump from the water that's there. Whereas the concrete used would serve no other purpose outside of energy storage.

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  • [–] [S] 2 points 1 month ago

    Yeah, if you have a reservoir to pump from that could make sense as well. I'm guessing different regions would prefer different approaches based on what's available. They do mention concrete is recycled, so it's not like new concrete needs to be produced either.

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