Wind farm. Row of wind turbines along the crest of a hill, with people at lower right demonstrating the large size of these machines. Wind power is a renewable and clean source of energy for electricity production. This is the Nevian Wind Farm in the Aude region of France. It consists of 18 wind turbines, producing a total capacity of 15.3 megawatts of power. The turbine rotors have a diameter of 52 metres, and each turbine, tower and set of rotors combined weighs 73 tonnes. This wind farm was established in 2003.