The Oyster is essentially a large pump, serving as the power source for a conventional onshore hydro-electric power plant. The movement of the device ... more

This elongated tube in sections, created by Scottish company Pelamis Wave Power, is the length of about five train carriages and sits on the ocean's ... more

Developers hope hundreds of these devices will eventually make up the world’s first wave farms, the biggest attempt so far to tap this unexploited ... more

UK company Marine Current Turbine's "SeaGen" is the first large scale tidal stream generator. The first SeaGen generator was installed in Strangford ... more

One generator weighs about 300 tons. Attached to the sides are two rotors of 52 feet in diameter, each driving a generator. Essentially, it works ... more

Tidal power plants exploit massive differences between low and high tide. La Rance is located on the estuary of the Rance River, in Bretagne, on ... more

Engineers stand near the Atlantis Resources AK-1000 tidal energy turbine before it is shipped to the European Marine Energy Centre test site in the ... more

This graphic shows the schematic outline of Raccoon Mountain Pumped Storage Plant in southeastern Tennessee, United States. Pumped storage reservoirs ... more

View from the higher Vieux Emosson reservoir to the Lac d'Emosson, the second-biggest reservoir in Switzerland. The Nant de Drance pumped storage ... more

Sitting on the border between Brazil and Paraguay, fed by the Parana River, the Itaipu dam generates more electricity in a year—over 94 terawatt ... more

Engineers and workers look at the stator of the first generator for the Three Gorges Dam power plant on the Yangtze River in China's Hubei province. ... more