But there are other types of hydropower that harness marine currents, tidal energy and wave energy, also referred to as marine current energy. Tidal stream turbines work much like submerged windmills, ...

The vertical rise and fall of the tides — driven by the gravitational forces of the moon and sun acting on the oceans’ waters — also causes motion of water called currents within bays, harbors and ...

A Swedish start-up company is generating electricity from low-velocity tidal currents with a system of underwater kites called "Deep Green." The kites are equipped with turbines tethered to the ocean ...

April 4, 2008 Bristol based renewable energy company Marine Current Turbines has completed the first installation phase of the 1.2MW SeaGen Tidal System at Northern Ireland’s Strangford Lough - a site ...

DOE says the funding opportunity represents the "largest investment in tidal and river current energy technologies in the United States." Over the past few years a number of projects related to tidal ...

What happens if you run an electric motor backwards? In short, it stops being a motor and becomes a generator. Following this principle, researchers at the University of Southampton have built a new ...

Deception Pass, located about 80 miles from Seattle, is the name of the strait that divides Whidbey and Fidalgo islands. It is a site that has potential to produce tidal energy. Jonathan Elderfield AP ...