11. December 2015
The offshore wind farms of the North Sea (Westermost Rough) and Baltic Sea (EnBW Baltic 2) which have been inaugurated over the past few months are supported from 62,000 t Dillinger steel. They are able to supply 150,000 British (Westermost Rough) and 340,000 German (Baltic 2) households with eco-friendly electricity. So they make a decisive contribution to save over 1 million tons of CO2 every year.
The Westermost Rough offshore wind park is situated 8 km off the British east coast (Yorkshire) and covers a total area of approximately 35,000 km2. It comprises 35 wind turbines of the next generation Siemens SWT-6.0-154 and is thereby the first offshore wind farm to use 6 MW turbines on a commercial basis. Furthermore, the rotor blades, with a length of 75 m, a diameter of 154 m and the swept area of each turbine of 18,600 m² are considered as the longest in the world. The dimensions of the monopile foundations are also gigantic: diameter up to 6.5 m, length up to 60 m and weight up to 810 t. For these monopile foundations erected in 20 m water depth, Dillinger Hütte supplied around 24,000 t of thermo-mechanically rolled heavy plates in thicknesses from 40 to 107 mm.
With its 80 Siemens SWT-3.6-120 turbines erected in the waves of the Baltic Sea, the offshore wind farm EnBW Baltic 2 covers an area of almost 27 km2, making it the largest offshore wind farm in the Baltic Sea area. The wind turbines rising 138 m above the surface of the water are almost as tall as the Cheops Pyramid in Giza. Its location in the German exclusive economic zone (EEZ), 32 km north of the island Rügen, with variing water depths between 23 and 44 m and difficult soil conditions presented a new challenge for the wind farm developers. Finally, depending on the water depth, the wind turbines have been erected on different foundations. Monopiles have been used for water depths up to 35 m, while three-legged jackets have been utilized at depths over 35 m. For the 39 monopile and 41 jackets foundations Dillinger Hütte supplied around 37,700 t of thermo-mechanically rolled heavy plates in thicknesses from 20 to 85 mm.
Innovative top-quality steel products, total orientation around our customers' needs and unceasing technological development in close cooperation with our partners form the basis of our success - as they have for more than 330 years.
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