The Deep Green marine power plant has attracted much attention lately from the global marine energy industry and media. The underwater kite, as it is called, is now producing electricity in the waters off Northern Ireland. The on-going ocean trials verify the ability to unlock ocean currents as a commercially viable renewable energy source.
Invented by an engineer at Swedish aircraft manufacturer Saab in 2001, and spun-off into marine energy by Nordic technology company Minesto since 2007, Deep Green has now taken a further step towards commercialization by starting to produce electricity outside the coast of Northern Ireland, Strangford Lough.
The Deep Green marine power plant in the waters off Northern Ireland is comprised of a wing and a turbine, which is secured to the seabed with a tether and moves with high speed in an 8-shaped path in the tidal or ocean current, reaching a speed ten times higher than the ocean current speed. The unique ability to increase the relative flow by a factor of 10 makes it possible to produce electricity from low velocity tidal and ocean currents, 1.2-2.5 m/s, where no other known technology operates cost-effectively. The energy output could potentially be increased by a factor of 1,000 since the velocity and energy has a cubic relationship.
Article published in: FuturENERGY July-August 2014