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innogy has taken the final investment decision (FID) for the construction of the 342MW Kaskasi offshore wind farm, which is located 35 kilometres north of the island of Helgoland (Germany). The contract value for wind turbines and foundations, the offshore transformer substation and the cabling for the wind farm is in the region of € 500 million.
 
innogy has signed a contract with Siemens Gamesa Renewable Energy for the supply of 38 SG 8.0-167 DD Flex offshore wind turbines. Each turbine will have a capacity of close to 9MW, a rotor diameter of 167 metres, and a total height of 191 metres. The wind turbines as well as the substation will be installed on monopile foundations built by Bladt Industries. Seaway 7 will commence installation of the foundations using a new installation method in third quarter of 2021 in moderate water depths of 18 to 25 metres.
 
innogy has contracted Bladt Industries to construct, deliver and commission the offshore transformer substation. From the substation the grid operator transports the energy via the existing HelWin2 converter platform further to coast. The wind turbines will be connected with the Kaskasi substation via 33kV aluminium subsea cables with different cross sections. Installation of approximately 50 kilometres of cable will be carried out by Seaway 7. The cables will be manufactured by the Dutch company Twentsche Kabel Fabriek (TKF).
 
It is expected that the wind farm will start operations in summer 2022, the final date will be set in coordination with the offshore grid operator TenneT.
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