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Gravity Storage 101 Or Why Pumped Hydro Is The Only Remotely Real Gravity Storage
(cleantechnica.com)
Everything about energy production and storage.
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Here's a dump truck at a mine that charges the battery via regenerative braking when hauling the material down the hill then uses that energy to drive the empty truck back to the top for the next load. Same idea.
Cool, I hadn't thought of that. Thanks!