Solar Panel Power Output
Solar Panel Power Output
A photovoltaic panel’s output is the sunlight it receives times its area and conversion efficiency.
The power is P = η·G·A. where η is the efficiency, G the solar irradiance and A the panel area.
Inputs
eta := 0.2=0.2
G := 1000 W/m^2=1000 kg/s^3
A := 1.6 m^2=1.6 m^2
Multiply efficiency, irradiance and area.
P := eta·G·A=320 W
Results
At full sun (1000 W/m²) a 20%-efficient 1.6 m² panel makes about 320 W. Output falls with cloud, angle and temperature.
Assumptions & limitations
- Standard test irradiance.
- Constant efficiency.
- Panel normal to the sun.