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WalterBright
on Feb 8, 2024
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Europe's deepest mine to become giant gravity batt...
While that makes perfect sense, I have read journalists claiming that Teslas were 110% efficient because of regenerative braking.
stubish
on Feb 9, 2024
[–]
A pile of rocks on a hill is a renewable energy source if you are prepared to wait a few billion years for plate tectonics to recharge it.
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