this post was submitted on 22 Dec 2025
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228
Grid-Scale Bubble Batteries Will Soon Be Everywhere (spectrum.ieee.org)
submitted 15 hours ago by kalkulat@lemmy.world to c/technology@lemmy.world
52 comments fedilink hide all child comments
 

"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 8 points 12 hours ago (3 children)

I wonder how resilient they are to big winds.

[–] Deebster@infosec.pub 28 points 12 hours 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.

[–] MalReynolds@slrpnk.net 21 points 12 hours ago (2 children)

160km/hr as per TFA.

[–] Simulation6@sopuli.xyz 10 points 12 hours ago (1 children)

Guilty, I only skimmed it. Thanks.

[–] sunbeam60@feddit.uk 8 points 12 hours 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 12 hours ago (1 children)

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

[–] XeroxCool@lemmy.world 2 points 7 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"

[–] kami@lemmy.dbzer0.com 8 points 12 hours ago

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