Wind Turbine Power Calculator
Power output from wind speed and rotor size.
Enter your values
Results update instantly as you type — no submit needed.
Results
- Power output
- 12.41 kW
- Swept area
- 113.1 m²
- Annual energy at 30% CF
- 32,623 kWh
- Wind power density
- 314 W/m²
Quick answer
Wind power scales with the cube of wind speed and the square of rotor diameter.
P = ½ρAv³ × Cp
How to use the Wind Turbine Power Calculator
- 1Enter rotor diameter and average wind speed.
- 2Set the power coefficient (Betz limit is 0.59).
- 3Adjust air density for altitude.
Frequently asked questions
Why does wind speed matter so much?
Power scales with the cube — doubling wind speed gives eight times the power.
What capacity factor is realistic?
25–35% onshore, higher offshore.