Temperature 55 F, broken clouds, 1:14 PM; for only 4th time this year solar panels hit 5.1 kW, & on first day of winter. Max design output rated at 5.5 kW [ June 20 th, 12:30 PM, 50 deg F & luck ]. System can supply 100% of electric load if properly managed. In Nov. tried to sneak in some electric heat and had to pay a $ 20 electric bill, normal bill is $ 7.