Bristol: Some 45km off the east coast of England, the world's largest offshore wind farm will have an estimated annual production of 1.9 terawatt hours - enough to supply electricity to 415,000 homes. The Scottish and Southern Energy and RWE Npower Renewables development, built alongside sandbanks known as Inner Gabbard and The Galloper, will comprise 140 turbines arranged over two sites totalling 147sq km, giving it a capacity of 504MW..
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