Calculate the theoretical power available from the wind for a given turbine size and wind speed.
Turbine & Environment
m
m/s
Cp
Calculation Results
Enter turbine radius and wind speed
About this calculator
Quick Reference
PPower Output
RBlade Radius
vWind Speed (m/s)
ρAir Density (1.225)
Overview
Wind turbines extract kinetic energy from the wind and convert it into electrical power. The amount of power depends on the air density, the swept area of the blades, and the cube of the wind velocity.
💡
Pro Tips
Power = 0.5 × ρ × A × v³ × Cp.
Betz's Law states the maximum theoretical efficiency (Cp) is 59.3%.
Air density (ρ) is assumed to be 1.225 kg/m³ at sea level.
!
Fun Facts
"Modern large wind turbines have a capacity of 5 to 10 Megawatts each."
"The tips of a large wind turbine's blades can travel at over 250 km/h."
"Wind power is one of the fastest-growing sources of renewable energy in the world."
