A lot of concern here about the 150 cycle lifetime. But if they could be made cheap enough on a per-MWh basis, they might solve the (IMO) thorniest bit of 100%

A lot of concern here about the 150 cycle lifetime. But if they could be made cheap enough on a per-MWh basis, they might solve the (IMO) thorniest bit of 100% renewable strategies... seasonal supply balancing.