this post was submitted on 22 Dec 2025
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271
Grid-Scale Bubble Batteries Will Soon Be Everywhere (spectrum.ieee.org)
submitted 2 days ago by kalkulat@lemmy.world to c/technology@lemmy.world
66 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 2 days ago (3 children)

I wonder how resilient they are to big winds.

[–] Deebster@infosec.pub 28 points 2 days ago (1 children)

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 3 points 7 hours ago* (last edited 7 hours 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 21 points 2 days ago (2 children)

160km/hr as per TFA.

[–] Simulation6@sopuli.xyz 11 points 2 days ago (1 children)

Guilty, I only skimmed it. Thanks.

[–] sunbeam60@feddit.uk 8 points 2 days 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 2 days ago (1 children)

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

[–] XeroxCool@lemmy.world 3 points 2 days 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 2 days ago

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