Siemens successfully completes erection of 25 offshore wind turbines in Great Britain

Following commissioning and connection of the offshore wind farm to the power grid the wind turbines will start commercial operation by the end of the year, supplying environmentally friendly power to more than 80,000 households. The Burbo offshore wind farm has a total capacity of 90 MW and will be operated by SeaScape Energy Ltd., a company owned by the Danish utility DONG Energy A/S.

For onshore operations, Siemens leased a 45,000 square-meter area in the port of Mostyn, located in North Wales. The 65 m high steel towers were assembled upright and all internal and electrical systems were tested before they were loaded onto the installation vessel. The purpose built vessel carried towers, nacelles, hubs and blades for 3 turbines per trip to the site area, which is located approximately twelve kilometers from shore. At the site, each wind turbine was erected in five heavy lifts with a maximum weight of approximately 185 tons. The average erection time per turbine weighing almost 500 tons each was less than half a day.

The Burbo Wind Farm is the first offshore project using the Siemens SWT-3.6-107 turbine and the first in a series of offshore projects to be built by Siemens. In a few weeks' time, erection of 48 turbines of the SWT-2.3-93 type will commence offshore at Lillgrund near the Swedish city Malmoe. With a capacity of 110 MW, it will be the largest offshore wind farm in Sweden. The Lillgrund project will be operated by the utility company Vattenfall and commercial operation is scheduled to start in the fall of 2007.

In 2008, Siemens will start erection work on the largest offshore wind farm in the world off the east coast of Great Britain. The Lynn and Inner Dowsing project comprises 54 SWT-3.6-107 wind turbines. The wind farm will have a maximum capacity of 180 MW and will be operated by the British gas provider Centrica.

„Offshore wind energy is a key future market for Siemens,“ said Andreas Nauen, head of the Wind Power Division of Siemens PG. „Siemens is currently the leading manufacturer of offshore wind turbines. Our technology is making a significant and steadily growing contribution towards the implementation of an environmentally friendly, reliable power supply.“

Siemens can look back on many years of experience in offshore wind power. In 1991, the first offshore wind farm in the world was installed by Siemens Wind Power in Denmark. Likewise, the 165 MW Nysted offshore wind farm, erected by Siemens in the Baltic Sea offshore of Denmark in 2003, is still the largest in the world.

The Power Generation Group (PG) of Siemens AG is one of the premier companies in the international power generation sector. In fiscal 2006 (which ended September 30), Siemens PG posted sales amounting to more than EUR10 billion and received new orders totaling EUR12.5 billion, according to U.S. GAAP Group profit amounted to EUR782 million. On September 30, 2006, PG had a work force of approximately 36,400 worldwide.

Siemens AG
Corporate Communications
Press Office Power Generation
Oliver Loenker
Tel. 49 9131/18-7032
Fax: 49 9131/18-7039
mailto:oliver.loenker@siemens.com
Reference Number: PG 200707.053 e