Scottish startup to turn Finnish mine into giant gravity battery

Edinburgh-based startup Gravitricity is set to turn one of Europe’s deepest mines into the continent’s first-ever gravity energy storage system.   The gravity tech uses massive weights that are hoisted up the mineshaft during times of surplus energy, and then released back down again during times of peak demand — driving a turbine and sending power to the grid. The system can release large bursts of electricity quickly or release it more slowly depending on what’s required. Gravitricity recently inked a deal to install its technology at a 1,444-metre-deep mine in Pyhäjärvi, a small town 450 kilometres north of Helsinki, Finland.…

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