How UK's disused mine shafts plan to store renewable energy

Science The Guardian

Gravitricity develops winch and hoist system to store energy at half the cost of lithium-ion batteries Britain’s cheapest “virtual battery” could be created by hoisting and dropping 12,000-tonne weights – half the weight of the Statue of Liberty – down disused mine shafts, according to Imperial College London. The surprising new source of “ gravity energy ” is being developed by Gravitricity, an Edinburgh-based startup, which hopes to use Britain’s old mines to make better use of clean electricity at half the cost of lithium-ion batteries. Continue reading... …

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