Suppose an anemometer mounted at a height of 10 m on a level field with tall grass shows an average windspeed of 6 m/s. a. Assuming Rayleigh statistics and standard conditions (150C and 1 atm), estimate the average wind power (W/m2 ) at a height of 80 m. b. Suppose a 1300 kW wind turbine with 60 m rotor diameter is located in those 80 m winds. Estimate the annual energy delivered (kWh/yr) if you assume the turbine has overall efficiency of 30%. c. What would the turbineâs capacity factor be?