When oil, gas and coal are exhausted, man will need other sources of energy to fuel the cars and light the houses. Since electrical power production results in pollution, man has developed wind turbines. Huge windmills situated in exposed and windy areas are a common sight in parts of the country.
Strong, steady winds can turn the windmill blades. As the blades spin, they turn a shaft that generates electricity. The places where we have large group of wind turbines, are called wind farms. These windmills can power generators, which would then produce electricity in many homes.
Below Wind Turbines info from Wikipedia (Read More):-
A wind turbine is a rotating machine which converts the kinetic energy in wind into mechanical energy. If the mechanical energy is used directly by machinery, such as a pump or grinding stones, the machine is usually called a windmill. If the mechanical energy is then converted to electricity, the machine is called a wind generator, wind power unit (WPU), or wind energy converter (WEC).
This article discusses electric power generation machinery. The windmill article discusses machines used for grain-grinding, water pumping, etc. The article on wind power describes turbine placement, economics and public concerns. The wind energy section of that article describes the distribution of wind energy over time, and how that affects wind-turbine design.
http://en.wikipedia.org/wiki/Wind_turbines
