Anyone have experience exporting power back to SCE in So Cal? Can this be done with a Powerwall as well?
I’d rather keep it since SCE is so unreliable.
I don't think Powerwalls are set up to export power in the US. You can offset house load and export all your solar power if you have a PV system, though.
Still trying to figure this out. Is the thinking...
Peak daytime --> Solar exports to SCE for $++
Peak daytime --> Powerwall powers the house
Offpeak nighttime --> Grid recharges the powerwall
Not quite. There's an additional restriction in the US that Powerwalls installed with solar will only charge from solar. This is to preserve eligibility for the 30% tax credit. So:
Offpeak daytime -> Powerwall charges from solar
Peak daytime -> Powerwall powers the house, all solar is exported.
This is assuming you're using the time-based mode. There is also a self-consumption mode that just attempts to use your solar as much as possible. There are two sub-modes for the time-based mode that change how the Powerwall deals with part-peak during the day.
Here's a vague description of the modes: https://www.tesla.com/support/energy/own/powerwall/modes-of-operationwit...