Submitted by stephen.powelson on May 18, 2018
I got a powerwall 2 installed and turned on about a month ago. I also have a Tesla 3.9kW solar system turned on a few months before that. I checked my PGE bill and I'm still using a lot of energy even though the Tesla app says I am 99% self powered every day.
I found out that my hot tub and air conditioner (two of the biggest power demand things I have) are not wired to the powerwall or to the tesla gateway. These devices were wired before the powerwall was installed. So the Tesla app doesn't count these systems in my electric use, and those devices draw directly from the grid, so I am still paying for electricity. When I got the powerwall I was under the impression that everything in my house would be run through that and that the grid would supplement when the load exceeds 5 kW or the powerwall battery is depleted. Am I mistaken? I am arguing with tesla on tech support that they should come out and fix this.