Renewable sources of energy are able to ensure a more limited environmental impact compared to that produced by fossil fuels. The main advantages of renewable sources consist in the fact that they are inexhaustible, who renew their availability in a short time, and that their use produces an environmental pollution entirely negligible.Wind energy is the energy possessed by the wind, that only a few decades is used to produce electricity. To harness the energy of the wind turbines are used. The principle is the same as the old windmills ie the wind that pushes the blades, in this case, the movement of rotation of the blades is transmitted to a generator that produces electricity.
The wind turbines are different in shape and size, the type most widely used is the average, about 50 meters high with 2 or 3 blades 20 meters long and capable of providing a power supply daily to 500/600 kW (equivalent to the daily electricity demand 500 families).
More wind turbines together form the wind farm, "wind farms", real power in which the turbines are located at a distance apart equal to 5/10 times the diameter of the blades, so in case of wind turbines it is an average installed every 200 meters
Antonio 5A - I.P.I.A"G.Marconi"

















