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Europe’s deepest mine to become giant gravity batterywww.independent.co.uk/tech/gravity-battery-mine-renewable-energy-b2492087.html
724 sats \ 2 comments \ @Doo_Deux 8 Feb tech
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313 sats \ 0 replies \ @notgeld 8 Feb
from renewable sources like solar and wind in order to lift a heavy weight
Solar is very relevant to Finland
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0 sats \ 0 replies \ @k00b 8 Feb
The disused mine will be fitted with a gravity battery, which uses excess energy from renewable sources like solar and wind in order to lift a heavy weight. During periods of low production, the weight is released and used to power a turbine as it drops.
This is really elegant actually. I guess without mines it wouldn't really be possible. Another point for diggers.
A study last year by the International Institute for Applied Systems Analysis (IIASA) estimated that gravity batteries in abandoned underground mines could store up to 70TWh of energy – enough to meet global electricity demands.
That's enough for a day of global electricity demand. Annually we do nearly 23000 TWh.
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