The choice of Siemens as turbine supplier for two adjacent North Sea wind farms off England's east coast is official at last. It had been widely known that the Danish manufacturer was lined up by developer Centrica to supply and install the turbines at its sites at Lynn and Inner Dowsing, three miles off Lincolnshire. Siemens will supply 54 of its 3.6 MW machines with a combined maximum capacity of 180 MW. Offshore construction starts this spring on the £300 million North Sea project which is expected to be completed by the end of 2008. Onshore work has already started; in February, Siemens' transmission and distribution division was awarded the contract for grid connection. The project will be the second time that Siemens' 3.6 MW machines are deployed offshore in the UK. Work is underway on the 25 turbine Burbo Banks wind farm in Liverpool Bay off the north-west coast, which is due to online later this year. Lynn and Inner Dowsing are Centrica's biggest wind projects to date. It already operates a 26 MW onshore wind farm and owns 50% of the 90 MW Barrow Offshore wind farm. It has also just announced that it is to become a 50% partner in Airtricity's newly commissioned Braes of Doune onshore wind farm in central Scotland.