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[-] 9point6@lemmy.world 3 points 6 hours ago

To be honest, at grid scale, I don't see why the answer to this today isn't that the government/energy companies just build a shit load of gravity batteries and use the basically free power times to build grid supply for when the sun's gone down.

[-] Maalus@lemmy.world 6 points 5 hours ago

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.

[-] LuckyBoy@lemmy.world 3 points 5 hours ago
[-] Lorgres@lemmy.world 3 points 4 hours ago

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.

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this post was submitted on 02 Oct 2024
820 points (96.5% liked)

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