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Grid-Scale Bubble Batteries Will Soon Be Everywhere (spectrum.ieee.org)
submitted 10 months ago by to c/technology@lemmy.world
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"This giant bubble on the island of Sardinia holds 2,000 tonnes of carbon dioxide. But the gas wasn’t captured from factory emissions, nor was it pulled from the air. It came from a gas supplier.... "The facility compresses and expands CO2 daily in its closed system, turning a turbine that generates 200 megawatt-hours of electricity, or 20 MW over 10 hours."

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[–] 1 point 10 months ago*

The number of decommissioned but still usable batteries are growing fast though, and plenty of storage sites use old battery packs, both from cars and home energy storage and stuff like it

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