> Like CATL announced a cost of $19 per kwh
> I think the actual cost to buy one now it more $40-60.
Plus battery assembly and installation costs (inverter, grid connection).
> If you spread $60 over 15000 cycles
A 30 year lifetime (11k cycles if charged/discharged once a day). Using a 5% discount rate the cost goes up to 0.78c/kWh for the cells. The cost goes up if it can not cycle once a day, for instance intermittent source of energy or excess capacity. And the cost goes up with all the rest of the equipment involved, and round trip efficiency.
Plus battery assembly and installation costs (inverter, grid connection).
> If you spread $60 over 15000 cycles
A 30 year lifetime (11k cycles if charged/discharged once a day). Using a 5% discount rate the cost goes up to 0.78c/kWh for the cells. The cost goes up if it can not cycle once a day, for instance intermittent source of energy or excess capacity. And the cost goes up with all the rest of the equipment involved, and round trip efficiency.