1KW=1.36 horsepower
So the power of the fan can be converted into horsepower.
Most of the wind turbines in general wind farms are in the megawatt range. If it is 1MW, then it is 1000*1.36=1360 horsepower.
Most household wind turbines are in the hundreds of watts and several kilowatts, such as 500W wind turbines. , then it is 0.5*1.36=0.68 horsepower