Formula: Panels = (Roof Area × Usable % × (1 − Spacing Loss %)) ÷ Panel Area → Total Capacity (kW) = Panels × Panel Wattage ÷ 1000. Determining how many solar panels fit on your roof and the total power output (in kW) is one of the first steps in planning a solar installation.
Repeated shutdown is usually a protection response: low DC voltage under load, overload/surge, overheating, or configuration limits. First identify system type: standalone inverter vs all-in-one (inverter + charger + MPPT), then follow the matching diagnostic path.