@MikeMason_CO2 @DrJenBaker @eLEJOG@dpeilow@faradion_uk@deregallera@SUNRISEnet1@106Euan To my knowledge there are no stationary storage installations of sodium ion batteries. Main focus for sodium-ion is transport sector. High energy density is not important for stationary storage, hence @cumulusenergy Copper/Zinc for stationary grid-scale storage.