Wind Energy is energy harnessed from the wind. Man has used wind energy for over 2000 years. In many places, wind energy was harnessed by windmills for pumping water and grinding grain. Windmills work by slowing down the speed of the wind. The wind flows over the blades causing them to turn.
Advantages of Wind Energy:
• Since wind energy is the result of temperature changes due to the heat of the sun, and the sun is an inexhaustible source of energy, wind energy is also renewable.
• It is a clean, reliable cost effective source of electricity.
• Electricity generated from the wind does not contribute to global warming and acid rain.
• Compared to energy from nuclear power plants, there is no risk of radioactive exposure from wind power.