Liquid air battery.

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Construction is beginning on the world’s largest liquid air battery, which will store renewable electricity and reduce carbon emissions from fossil-fuel power plants.

The project near Manchester, UK, will use spare green energy to compress air into a liquid and store it. When demand is higher, the liquid air is released back into a gas, powering a turbine that puts the green energy back into the grid.
The Highview battery will store 250MWh of energy, almost double the amount stored by the biggest chemical battery, built by Tesla in South Australia. The new project is sited at the Trafford Energy Park, also home to the Carrington gas-powered energy plant and a closed coal power station.

The project will cost £85m, and Highview received £35m of investment from the Japanese machinery giant Sumitomo in February. The liquid air battery is creating 200 jobs, mainly in construction, and employing former oil and gas engineers, with a few dozen in the continuing operation. The plant’s lifetime is expected to be 30-40 years. “It will pass to the next generation,” said Cavada.