Edinburgh-basedstartupGravitricity is set to turn one of Europes deepest mines into the continents first-ever gravity energy storage system.
The system can releaselarge bursts of electricity quickly or release it more slowly depending on whats required.
The Finnish mine project will be the companys first full-scale, grid-connected prototype.
If successful, it could provide a springboard for larger projects capable of powering tens of thousands of homes.
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Gravitricity isnt the only one harnessing gravity for energy storage.
And its not the only way to give dirty old mine shafts a new, cleaner lease on life.
There have even been proposals to turn former mines into undergroundfood farms.
Story bySion Geschwindt
Sion is a freelance science and technology reporter, specialising in climate and energy.
