Interesting to see another option to conventional batteries, although the efficiency is a killer - more likely to be built at industrial scale by companies like Siemens for the energy suppliers I suspect!
https://newatlas.com/energy/lavo-home-hydrogen-battery-storage/

PS: I suspect the UK will be keeping the French nuclear industry in business for the next 20 years!


M3W5sp 2015, MSCC, MTWC, Oxon UK