Solar Panel Array Size Calculator
Estimate solar panels needed from energy use and sun hours.
Panels Needed
20 panels
System Size
7.69 kW (DC)
Daily Use
30.00 kWh
Sun Hours
5 h/day
Panel Wattage
400 W
Derate Factor
0.78 (typical AC/DC losses)
Estimate solar panels needed from energy use and sun hours.
Panels Needed
20 panels
System Size
7.69 kW (DC)
Daily Use
30.00 kWh
Sun Hours
5 h/day
Panel Wattage
400 W
Derate Factor
0.78 (typical AC/DC losses)