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Grid-Scale Bubble Batteries Will Soon Be Everywhere (spectrum.ieee.org)

submitted 10 months ago by kalkulat@lemmy.world 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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[–] lightnsfw@reddthat.com 4 points 10 months ago (1 child)

The CO2 is likely harvested directly from the atmosphere.

What makes you think that? I just did a little googling and didn't find a source that commercial co2 comes from the air. The best case scenario I found was it being a byproduct of other processes. Although I'm doing this on my phone so maybe I missed something.