Business Green: Four of Europe’s largest energy companies have announced they are to join forces to tender for the right to develop offshore wind farm zones in the North Sea, having gained dispensation from the Crown Estate to announce the new joint venture ahead of tomorrow’s bid deadline. Airtricity, RWE npower renewables, and Norwegian firms Statkraft and StatoilHydro announced that they had formed a joint venture called Forewind to table a bid under the Crown Estate’s Round 3 bidding process, …