Finally received my Powerwall 2 quote, 3 weeks after the onsite inspection. $14,155 installed.
I have decided NOT to proceed, mainly as Tesla has not yet released the firmware update that allows the battery to be topped up from the grid off peak. I just don't have enough spare solar to justify it, I wouldn't fill the battery until late spring!
Did they mention any problems with the 3 phase power particularly with the battery backup - My understanding was for the tesla power wall to work correctly/fully on 3 phase - you had to get 3 of them - 1 for each phase