Wind is produced as a result of giant convection currents in the Earth’s atmosphere, which are driven by heat energy from the Sun. This means that the kinetic energy in wind is a renewable energy resource – as long as the Sun exists, the wind will too.
Wind turbinesWind turbines use the wind to drive turbines directly. They have huge blades mounted on a tall tower. The blades are connected to a ‘nacelle’, or housing, which contains gears linked to a generator. As the wind blows, it transfers some of its kinetic energy to the blades, which turn and drive the generator. Several wind turbines may be grouped together in windy locations to form wind farms.
Advantages 
Wind is a renewable energy resource and there are no fuel costs.No harmful polluting gases are produced.Possibility of placement in hard-to-reach places.Need a small area and fit into any landscape.Getting free electricity in the long run, no fuel costs and its deliveryAutonomy – independence from the state and operation of external electrical networks.Disadvantages
The amount of electricity generated depends on the strength of the wind.
