Looking for battery storage system for home with three phase power (and grid connected as form of back-up).
I’ve had a quote for a Fronius system - but it is quite small.
Tesla has upgraded the controller for its PoweWall 2 (the Backup Gateway 2) to enable up to 10 Powerwalls to be connected on-grid for a three phase home.
Question: are there any other contenders?
