as a chemist lithium is NOT needed for grid storage batteries are stupid and expensive compared to flywheels, water pumping. Lithiums advantage is weight which is important for transportation /handheld devices but when you're allowed to be stationary and HEAVY (like grid storage) you can ignore lithium batteries and go for mechanical storage.
as a chemist lithium is NOT needed for grid storage batteries are stupid and expensive compared to flywheels, water pumping. Lithiums advantage is weight which is important for transportation /handheld devices but when you're allowed to be stationary and HEAVY (like grid storage) you can ignore lithium batteries and go for mechanical storage.
Redox flow batteries seem like a great option for this.