(HEP) Hydro, Hydropower or Hydroelectric Power
Energy in moving water can be harnessed and used to generate electricity. Since water is about a thousand times denser than air, even a slow flowing stream of water, or moderate sea swell, can yield considerable amounts of energy. There are many ways energy can be harnessed from of water including tidal power, waver power and hydro. Hydroelectric power is a term often reserved for large-scale hydroelectric dams, which can have a mixed effect on the environment if not well located; small-scale hydropower can include the conversion of old mill streams to generate electricity.