this post was submitted on 02 Oct 2024
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Because "gravity batteries" is a stupid inefficient concept peddled by techbros to solve a huge problem with "a magic solution". In reality, they require either digging straight down like a mine shaft, but at huge scale, or a high rise building with all the weight concentrated on its top floor when the batteries are "charged". Wind would sway that shit left and right, the weight concentration would undermine / damage the building if it even was possible to build at scale.
Well, you can use dams.
The problem is really down to finding places where you can actually build something like a hydroelectric power plant.
You need a large area you can safely flood. (No villages in the area or only villages you can buy out the owners of) or a high up lake.
The area to flood needs to have the geology required to construct a dam safely.
And finally, the area needs to be pretty high up and have an area below you can direct the outgoing water to.
Yeah, but there are already built hydroeletric dams that can be reused like that.