Innogy commits to 342 MW wind farm
Germany, Essen: Innogy SE has taken the final investment decision for the construction of the 342 MW Kaskasi offshore wind farm in the German North Sea.
Image source: Innogy SE
Germany, Essen: Innogy SE has taken the final investment decision for the construction of the 342 MW Kaskasi offshore wind farm in the German North Sea.
Located about 35 km (22 mi) north of the island of Heligoland, Kaskasi will be the company’s third wind farm offshore Germany.
The company has signed contracts totaling about $540 M (€500 M) for the wind turbines and foundations, the offshore transformer substation, and the cabling.
Siemens Gamesa Renewable Energy S.A. will supply 38 SG 8.0-167 DD Flex offshore wind turbines. Each turbine will have a capacity of about 9 MW, a rotor diameter of 167 m (548 ft), and a total height of 191 m (627 ft).
The wind turbines as well as the offshore transformer substation will be installed on monopile foundations built by Bladt Industries A/S. Seaway 7 is expected to start installation of the foundations using a new method in 3Q 2021 in water depths of 18 to 25 m (59 to 82 ft).
The “vibro pile driving” is said to be an efficient alternative to the conventional method of hammering monopiles into the seabed. An Innogy-led research project has shown that this installation method could deliver reduced installation times and noise emissions during construction. Kaskasi will be the first wind farm in the world using the vibro driving technique to install all monopile foundations to target penetration.
The wind turbines will be connected with the Kaskasi substation via 33 kV aluminium subsea cables, manufactured by Twentsche Kabel Fabriek, with different cross sections. Seaway 7 will install the 52 km (32 mi) of cables.
The wind farm is expected to start operations in summer 2022. The final date will be set in coordination with the offshore grid operator TenneT.
Source: Offshore