Its notable he skipped the primary chemistry people use for storage too, LiPho. They are guaranteed to last 10 years, they are about $150 per KWH and can sustain 0.5C charge and discharge.
For me at least the storage is about 1/3 of the cost of the system and I'll likely have to replace it once (probably with Sodium Ion since that is taking off and $50 a KWH) and a new inverter and there is no way it costs even half the total system install over the lifetime.
For me at least the storage is about 1/3 of the cost of the system and I'll likely have to replace it once (probably with Sodium Ion since that is taking off and $50 a KWH) and a new inverter and there is no way it costs even half the total system install over the lifetime.