At what range of wind speed is the electricity from the wind turbine is generated?

• A. 100 – 125 mph
• B. 450 – 650 mph
• C. 250 – 450 mph
• D. 30-35 mph

Answer: (D)

For small turbine starts generating power 12.6 kph (3.5 m/s) is the typical cut-in speed.
At 36–54 kph (10–15 m/s) produces maximum generation power.
At 90 kph (25 m/s) maximum, the turbine is stopped or braked.