With saved power of approx 13 KWh per day

this has reduced usage from grid to about 10% on Overcast winter day and will be about 2-3 % on sunny day

Peak drawing from grid ie use at peak period is now zero

Just enough storage to keep Laser room at constant temperature through the night, Keeps all servers going
A second powerwall would be great in summer months. Ideal in Melbourne is 50+ panels per powerwall for winter this is just enough to charge on overcast winters day.

Powerwall II in cost saving mode rocks

smart and no need to set any lower limit to battery charge, as it reaches minimum just on sun rise