When power is generated from the force of moving water it is called Hydel power. Rainwater or river water is stored in dams and made to fall from heights. The falling water flows through pipes inside the dam over turbine blades placed at the bottom of the dam. The moving blades then turn the generator to produce electricity.

The water discharged after the generation of electricity is used for irrigation. One fourth of the world’s electricity is produced by Hydel power.