Hydropower is electricity generated by the movement of water.
In the late 19th century, hydropower became an industrially efficient method of generating electricity. Waters falling from high altitudes, e.g. mountain streams or rivers, as well as strong currents are the best candidates for generating electricity from hydropower. This electricity is a considerable global energy source. It is generated by water entering a turbine which then rotates. When this turbine is connected to an electric generator, this mechanical energy is converted into electrical energy. The Niagara Falls and the Hoover Dam are two examples of electricity produced in this way.
Hydropower provides about 20% of the world’s electricity.
Hydropower has recently gained popularity. The World Bank called it a workable solution to keep up with growing energy needs while avoiding CO2 emissions.