Why engineers are turning abandoned mines into giant batteries
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Why engineers are turning abandoned mines into giant batteries
There's a hole in the ground in North Queensland that spent ninety years producing gold. Now it's being converted into a 250 MW pumped hydro plant, storing roughly 2,000 megawatt-hours by moving water between two old mine pits. Pumped hydro is already the largest form of grid-scale storage on the planet, bigger than every battery installation ...
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