This Giant Bubble in Sardinia Stores Energy for the Grid. Here's How.
spectrum.ieee.org
Google is betting big on CO2 batteries to power its data centers with clean energy.

"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.”

      • sunbeam60@feddit.ukEnglish
        7·
        6 hours ago

        And if there is a known high wind coming, the plant can forcefully go through the compression cycle to remove the bubble.

      • XeroxCool@lemmy.worldEnglish
        1·
        2 hours ago

        Also, per the article, the danger zone in a burst is only claimed to be 70m until cleared and the CO2 release still pales in comparison to a regular coal plant - “equivalent to 15 round trips between New York and London on a Boeing 777”