Underwater kite to generate electricity
The turbine, known as "Deep Green" was developed by a privately-owned Swedish/UK company, Minesto, and is intended to be tethered 100 meters above the sea bottom. It has a wingspan of 12 meters and a turbine one meter in diameter. The "kite" comprises a wing with a rudder to steer the turbine to face in the direction that will allow it to capture the maximum amount of tidal energy, and generate up to 500 kW of electricity. The kite flies in a figure eight and travels 10 times faster than the water it is tethered in.
In comparison with other tidal systems Deep Green is lightweight and much smaller, which translates to lower manufacturing costs.
Source: physorg.comAdded: 21 December 2010