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this post was submitted on 17 Oct 2024
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Do you know what they do in Norway with out-of-use old mines? They lift a load when there's energy to be stored. They lower it when there's energy to be spent. I'm sure you know how electric engines work and that the conversion is symmetric.
No battery tech involved.
Battery tech is in general mostly relevant for autonomous devices we carry, for airplanes and ships, for cars.
For the central grid the ways to store energy are almost inifinite.