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Old 08-09-19, 08:07 PM   #9
Elcam84
Apprentice EcoRenovator
 
Join Date: Jun 2013
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Pumped hydro is pretty much the only feasible method at the moment. The mine shaft thing sounds good but very few mine shafts are straight down of any length and they are generally small and they fill with water.

The energy vault thing... Not feasible at all. In fact there is a good video explaining why it's so bad.

If using a weight worked it would already be used.
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