This calculator calculates the power output of a horizontal axis wind turbine given blade diameter and windspeed. This calculator can also calculate the size or windspeed required for a given power output
Enter the numbers you know in any one of the units then calculate the number you want
| turbine diameter | meters | ||
| feet | |||
| Wind speed | mph | ||
| m/s | |||
| Knots | |||
| Power In the Wind 1 | Watts | ||
| Power Output (Ideal Turbine 2) | Watts | ||
| Power Output (Real Turbine 3) | Watts |
Notes
Power in the wind is the total kinetic energy in the wind which crosses the rotors every second.
Power output of a theoretically perfect turbine which has an efficiency equal to the Betz limit (59.3%).
Power output of a turbine with a 40% efficiency. This is more typical of real turbines. A very good turbine may do slightly better and a not so good one will be worse.