The power plant at Rainbarrow Farm, on land owned by the Duchy of Cornwall, is a joint venture between local farmers and the Duchy.

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The first wind farm, with five floating turbines, will be completed by 2017 and a larger 500 megawatt farm (half the strength of a nuclear power plant) by 2020.

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She says the North Hoyle plant will provide 60 megawatts of power and dwarf the Blyth farm in Northumberland.

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