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‘Energy independent’ Uruguay runs on 100% renewables for four straight months (theprogressplaybook.com)
submitted 2 years ago by to c/technology@lemmy.world
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"with wind the single-biggest contributor.... Power production costs have declined “by almost half” .... And the clean energy sector has created 50,000 new jobs.... Ask me what was the impact on the electricity sector in Uruguay after this tragic war in Europe — zero."

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[+] -11 points 2 years ago (1 child)

There are, but none is feasible today when it comes to mass storage. Or is there one?

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  • [–] 18 points 2 years ago (1 child)

    There is actually. Pumped Storage hydro uses the energy as it's generated from renewables and uses it to pump water up into a reservoir. Once you have the water pumped, it's just a matter of letting the water back out through turbines. Their efficiency is somewhere around 80% which is pretty good.

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  • [+] -11 points 2 years ago

    For that you need both suitable hills and water. Also it's not that huge, it certainly depends on the reservoir capacity. If it was a feasible solution, then you'd see them everywhere, but you don't. Ask Germans about it.

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