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Grid-Scale Bubble Batteries Will Soon Be Everywhere (spectrum.ieee.org)
submitted 1 month 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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[-] Simulation6@sopuli.xyz 9 points 1 month ago

I wonder how resilient they are to big winds.

[-] Deebster@infosec.pub 30 points 1 month ago

Also from the article:

If the worst happens and the dome is punctured, 2,000 tonnes of CO2 will enter the atmosphere. That’s equivalent to the emissions of about 15 round-trip flights between New York and London on a Boeing 777. “It’s negligible compared to the emissions of a coal plant,” Spadacini says. People will also need to stay back 70 meters or more until the air clears, he says.

[-] HaraldvonBlauzahn@feddit.org 4 points 1 month ago* (last edited 1 month ago)

People will also need to stay back 70 meters.

Huge amounts of carbon dioxide can be far more dangerous. The Lake Nyos disaster has killed over 1700 people, at up to 25 kilometers distance.

[-] MalReynolds@slrpnk.net 22 points 1 month ago

160km/hr as per TFA.

[-] Simulation6@sopuli.xyz 12 points 1 month ago

Guilty, I only skimmed it. Thanks.

[-] sunbeam60@feddit.uk 9 points 1 month ago

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

[-] H1AA6329S@lemmy.world 1 points 1 month ago

That's really not that big of a wind. One bad storm and we have it burst

[-] XeroxCool@lemmy.world 3 points 1 month 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"

[-] kami@lemmy.dbzer0.com 8 points 1 month ago

The article also mentions that they can deflate it in around 10 hours

this post was submitted on 22 Dec 2025
294 points (98.4% liked)

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