Nexans Norway has received an order from TenneT for the production and installation of a 235 km DC connection for the 980MW BorWin6 offshore platform.
The agreement is for the offshore and onshore DC cables for the project, which is due to enter commissioning in 2027.
TenneT chief operating officer Tim Meyerjürgens said: “We have a long and trusting partnership with Nexans, which guarantees us reliability and quality at the same time.
“BorWin6 is the last grid connection project in the German North Sea to be implemented by TenneT before the technological leap to two gigawatts and 525-kilovolt cables.”
Various 320kV DC cables will be used in the project.
The start of the laying work is planned for 2025.
Two cable harnesses, a positive and one negative pole, as well as an additional fibre-optic cable, for controlling the system, are being laid for the grid connection.
The wind turbines are connected directly to the BorWin kappa offshore platform via innovative 66-kilovolt three-phase cables.
This eliminates the substations previously required for every wind farm and the 155 kV three-phase cables previously used to connect to TenneT’s offshore platform.
BorWin6 is located off the coast of Borkum.
With 190 km of submarine cable, it will entail the longest submarine cable route to date.
On land, 45 km of cable will be laid parallel to the existing routes of the HelWin1+2 and SylWin1 connections, whose land-side converters are also located in Büttel.