Water power, also known as hydropower, is the energy generated from the movement of water. This energy is harnessed primarily through the use of dams and turbines, which convert the kinetic energy of flowing or falling water into electricity. Hydropower is a renewable energy source, meaning it can be replenished naturally and does not deplete over time. Hydropower plants can vary in size, from large facilities that provide electricity to entire cities to small systems that serve individual homes. The use of water power helps reduce reliance on fossil fuels, contributing to lower greenhouse gas emissions and promoting a cleaner environment.