this post was submitted on 24 Oct 2026
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79
Italy Stores Grid Power in Giant CO2 Domes [Closed loop critical point CO2 compression battery, currently 200 MWh] (engineerine.com)
submitted 2 days ago by haerrii@feddit.org to c/technology@lemmy.world
8 comments fedilink hide all child comments
 

Found this on another "social" network - and thought I'd share with you, as I think the principle is pretty intriguing.

The article itself reads a bit sloppy - but explains what's going on quite well imo.

On the sun-drenched Mediterranean island of Sardinia, in the industrial zone of Ottana, rises a colossal, gleaming white elliptical bladder structure that looks like an indoor sports stadium or a terrestrial space habitat. Instead of

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[–] A_A@lemmy.world 6 points 2 days ago* (last edited 2 days ago)

tldr :
like steam engine but replace water with CO~2~
(and more efficient if no gas is lost)
liquid at (20 to 30)⁰C, ~65 atm
gas at (-40 to +40)⁰C at least and 1 atm
(it needs a huge place for storage of course)