this post was submitted on 22 Dec 2025
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Sure wish they mentioned the effeciency.
Could be very high, even the waste heat from the compression could be used to achieve more compression and turbines get to above 90%, that all depends on the scales they're building this at. 70% overall doesn't seem unrealistic as an educated guess.
On their website (energydome.com) they claim “75%+” round trip efficiency, so not a bad guess!
Compressed air without heat recovery is more like 30%, so this is huge
Carbon dioxide can be liquefied relatively easily which is what i guess makes this efficient