My system which was just installed is 42 Panels, 2 Power Walls in Northern California.
The system has just been turned on.
During the day, I am getting Solar Power approximately 5 kW, (not very much), and the Power Wall Battery on the app showed the batteries charged to 75% during the day.
Around 4 pm the Solar stopped producing Power (no Sun light), and the energy to the house was supplied by the Power Walls (Peak PG&E usage charges).
It only took about 4 hours for the Power Walls to discharge to 24% before the system began using energy from the Grid (PG&E).
This concerns me because in the event of a power outage that is very little energy backup (less than 4 hours).
And there was not much energy being used by the house during this time.
The main reason I wanted the Power Walls to provide energy during PG&E rolling blackouts, 4 hours is not nearly enough.
So are both my Power Walls working?
Is there a problem with the system?
Something does not seem right.