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Iberdrola connects Wikinger windfarm to German grid

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Iberdrola has connected its 350 MW Wikinger offshore windfarm to Germany’s grid, the Spanish firm announced today.

The windfarm, which was built in 18 months in the Baltic Sea, is now set to supply over 20 per cent of the power used by the state of Mecklenburg-West Pomerania.

Iberdrola said the €1.4bn ($1.7bn) project, its first solo offshore venture, involved overcoming multiple technology challenges and complications caused by the Baltic Sea's extreme weather conditions during the autumn and winter months.

To begin, 280 150-tonne piles were driven into the seabed and 70 620-tonne foundations were installed. Then, 70 5-MW turbines from French OEM Adwen were installed. The turbines feature a 222-tonne nacelle, a 135-metre rotor diameter, 77.5-metre blades and a 75-metre tower.  

Finally, over 80 km of underwater array cables were run and commissioned.

The offshore substation, which was manufactured by Spanish firm Navantia and weighs 8500 tonnes, will be used jointly by Iberdrola and German TSO 50Hertz.

Iberdrola’s installed renewable power capacity came to nearly 29 GW in September, making up two-thirds of the company’s total installed capacity. 

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