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boiling water again
(quokk.au)
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this post was submitted on 26 Mar 2026
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True, but that's just one part of the process, and it's not comparing to the initial energy in the source fuel.
If nothing else, there's an absolute efficiency limit from Carnot's theorem, but in reality it's much lower, even for the most modern and efficient gas plants, the limit seems to be ~60%, and for nuclear or coal, it's even lower at around 30-40%.