What is the term for energy generated from fast-flowing water?

The term for energy generated from fast-flowing water is hydroelectric power. This method harnesses the kinetic energy of moving water, usually from rivers or dams, and converts it into electricity. The process often involves constructing a dam to create a reservoir, and as water flows through turbines, the mechanical energy is transformed into electrical energy. This type of energy is renewable, as it relies on the natural water cycle and does not deplete resources or emit greenhouse gases during operation, making it an environmentally sustainable energy source.

In contrast, solar energy is derived from sunlight, wind energy comes from the movement of air, and geothermal energy utilizes heat from the Earth's interior. Each of these alternative energy forms taps into different natural resources, but none leverage the specific energy production capabilities associated with flowing water, which underpins the definition of hydroelectric power.