Owned by DONG Energy, E.ON and Masdar, the project will have a capacity of 630 MW once complete, making it the largest offshore wind farm in the world. Siemens has said that there is also an option to further expand the wind farm up to 1,000 MW in the future.

The London Array wind farm will supply enough power for approximately 750,000 homes – or a quarter of Greater London homes – and displace 1.9 million tonnes of CO2 emissions per year.

The project forms part of the United Kingdom’s second round group of offshore projects. The Siemens wind turbines will have a capacity of 3.6 MW each.

“The outlook for the offshore market is positive,” said CEO of Siemens Energy Sector Wolfgang Dehen.

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The scope of the supply agreement includes delivery, installation and commissioning of the 175 wind turbines, including a five year service agreement, which will see the company being responsible for servicing the offshore farm to ensure the turbines keep running effectively.

The turbines will be produced in Denmark and are expected to be shipped to the site for installation in 2011 and 2012. The turbines will be installed in water depths of up to 23 m, while the site has an average wind speed of 9.2 m per second. The wind turbine foundations and the grid connection are expected to be completed in 2011.