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04 Feb 2009 05:02:19

Wave device for offshore turbines tested

Wave device for offshore turbines tested
A wave energy generation device that attaches to wind turbines and shares the transmission infrastructure has passed initial testing.

A wave energy device that could add 500 kilowatts generating capacity to a wind turbine installation has passed its proof of concept tests, according to developers.

Green Ocean Energy, the company behind the Wave Treader device, claim they will have a prototype ready for full testing by 2010, one year ahead of the date it claims the product will be ready for commercialisation.

The Wave Treader consists of two arms with flotation devices at the end which extend in opposite directions from the base of the wind turbine mast.

As they rise and fall on the waves they increase the pressure on a liquid which then turns hydraulic motors and drives electric generators.

Because the device can be installed on wind turbines, it means it does not need its own additional transmission infrastructure and can cut the cost of renewable electricity generation.

Helen Steed, of funder the npower Juice fund, said: "We are delighted with the results of the Green Ocean Energy Wave Treader. The device is the first of its kind, and shows tremendous potential in utilising existing off-shore infrastructure to generate clean renewable energy."

Offshore Wave Energy Limited is also looking to combine wind and wave energy.

Its wave converters, which will use waves to compress air to power turbines, will be integrated into large floating concrete platforms on which wind turbines could be mounted.



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