The world’s largest demonstration plant for a new kind of renewable energy storage is up and running in the west of the China. Called liquid-air energy storage (LAES) the plant uses renewable electricity to compress air to extreme densities until it turns to liquid. It can then be rapidly released to power a turbine and discharge that green energy back into the grid.



No. “in Chinas’ west ?” or " … ?" idk.
No. Liquid fractions of gases from air readily separates. So O2(l), N2(l), Ar(g), and many other, each being much more valuable alone. Helium for example is very expensive.
(So, economically speaking, only the nitrogen should be expanded back to retrieve stored energy.)
in my opinion, this article could have been much better even if written by artificial intelligence.
It’s remote and it sounds like they’re not messing with separating the gas which costs more and needs more equipment and storage.