Wind farm is actually arrays of electricity-generating wind turbines,which are tall,slim towers with two or three rotor blades at the top.The wind turn the blades ,which spin a pole.This pole is connected to a generator ,where the electricity is made.There can be as few as one and as many as thousands of wind turbines in a single array .Computers monitor the wind direction and speed,and can shut down the turbines if the wind becomes too strong.