Submitted by david.morgan2 on Thu, 2019-08-22 08:45
I have a 12.2k system installed with 1 PW2. We recently had a mid-day grid outage that lasted about 20 minutes. During that time, I noticed that the house was properly drawing from the PW2, but I was confused to see that no power from the panels (bright sunny day) was going to the PW2.
I realize that there is a rule about solar production during a grid outage to protect the linemen, but I was told by Tesla that having the PW2 would mitigate that, and that our system could be self-sufficient if the grid went down -- meaning, 12.2k is enough to run our house for the day when the PW2 is included.
Is this normal, for there to be complete shutdown of the ability for the panels to charge the PW2 when the grid is down? That would basically make the entire system pointless during a grid outage - other than pulling from the PW2. What happens with a long-term outage? I want to be able to use the solar production in such a scenario.....