u/43251542521

from my preliminary research, it looks like tesla powerwall 3 is more efficient than enphase 10c.

My main concern is "redunancy". my solar consultant quoted 1 PW3 and 1 expansion battery, but if the PW3 dies, then for some time none of the solar will work.

However, if enphase 10c dies. (assume i have 3), then the other 2 will work.

is it better to get 2 PW3 rather than 1 PW3 and 1 expansion battery?

tell me everything i don't know!

I live in a house with terrible insulation built in the 70s. How is the insulation in new construction now with Title24? Esp for those who have moved into new constructions, do you feel yourself using AC/Heat as much as you used to?