what is hydropower used for
Hydropower. Hydropower is the energy captured from moving water. It is often used to make electricity, usually at dams. A renewable energy source, hydropower produced 6% of the United Statesâ total electricity and 67% of generation from renewables in 2008.oday, hydropower usually refers to dams that have been built to generate electricity. Hydroelectric power accounts for about 19% of the worldâs electricity, according to the US Geological Survey. Hydroelectric energy is produced by the force of falling water.