Mr Adamowitsch, the European Commission co-ordinator preparing a blueprint for trans-European energy networks, said: "Given the good offshore sites in Scotland, an integrated European solution requires adequate transmission capacity.
"We need to move from national to European thinking to incorporate the full potential of offshore wind generation in the North Sea."
Last week the EU suggested it was planning to invest £30 million in researching possible solutions to the grid upgrade conundrum.
Meanwhile, Haliburton and Schlumberger two major oil firms operating in the North Sea have announced plans to cut jobs.
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