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jawshoeaw t1_j0o0jkl wrote

Reply to comment by einmaldrin_alleshin in Switzerland’s Giant “Water Battery” Starts Working by Wagamaga

Concrete gravity storage has been demonstrated to be scalable. You just use more blocks of the same size. Pumped hydro is severely limited to areas that can store water without causing ecological problems. Also concrete doesn’t evaporate.

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einmaldrin_alleshin t1_j0othgk wrote

Producing concrete is an ecological disaster in itself, not to mention the cost. And while it won't evaporate, it'll break down as it's stacked and unstacked for thousands of cycles.

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