[tgtweak]

Good find. Looks like state of the art in liquid air energy storage was 96% on storage side and 77% on recovery.

("Thermodynamic analysis of a hybrid energy storage system based on compressed air and liquid air" by Bharath Kantharaj, Seamus Garvey, Andrew Pimm)

https://nottingham-repository.worktribe.com/OutputFile/75803...