Wind speed measurements in a location are performed over a 1-year period. The annual mean speed is obtained to be 85 m/s. The cut-in wind speed is 4 m/s, the cut-out wind speed is 18 m/s, and the rated wind speed is 11 m/s. The blade span diameter is 84 m. Take the air density to be 1.2 kg/m ³. Use a constant overall wind turbine efficiency of 36 percent. Assume that the power output remains constant between the rated speed and the cut-out speed and the Rayleigh wind speed distribution closely represents the measured wind speed data.

(a) Estimate the annual electricity production. 

(b) Determine the capacity factor of this wind turbine.

(c) Determine the potential revenue if the electricity is to be sold at a price of $0.22/k Wh.