Electrolysis is only about 60% efficient. This is why a lot of effort is being put into Concentrating Solar Power which stores heat in molten salt. https://en

Electrolysis is only about 60% efficient. This is why a lot of effort is being put into Concentrating Solar Power which stores heat in molten salt. https://en.wikipedia.org/wiki/Electrolysis_of_water#Efficiency https://en.wikipedia.org/wiki/Electrolysis_of_water#Efficien...