Wind Turbine Power Calculator

Calculate theoretical and actual wind turbine power output, capacity factor, and annual energy production.

Diameter of the wind turbine rotor.
m
Average wind speed at hub height.
m/s
Sea level: 1.225 kg/m³. Adjust for altitude.
kg/m³
Betz limit: 0.593. Typical: 0.35-0.45.
Gearbox + generator efficiency.
Onshore: 0.25-0.35, Offshore: 0.35-0.50.

Results

Betz Limit Power-kW
Actual Power Output-kW
Annual Energy Production-MWh
Swept Area-m²
References: IEC 61400; Betz's Law; AWEA