Under the deal, which covers Nordsee 1, 2 and 3 in the North Sea, RWE is keeping a 15% stake, "in line with its strategy of seeking investor help for pricey offshore projects".

"As part of RWE Innogy's 'capital light' strategy going forward, we are going to share the capital required for offshore projects through partnerships," says RWE Innogy chief executive Hans Bünting.

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