Author Topic: Sand battery?  (Read 34 times)

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Offline CG

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Sand battery?
« on: July 05, 2022, 07:40:02 am »
https://www.bbc.com/news/science-environment-61996520

I keep reading about ideas like this and keep asking "what us the efficiency"?
Power in vs power out. Also the length of time the energy can be stored.

I'm itching to try a gravity battery and see what efficiency is. Maybe just a battery powered drill motor to act as input and output.

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