Nexans and TenneT have started production of high-voltage subsea cables for the LanWin2 offshore grid connection at Nexans’ manufacturing site in Halden, Norway.
This marks the first time Nexans has produced its 525kV high-voltage, direct current (HVDC) XLPE subsea cable technology at an industrial scale, signalling the start of the delivery phase for the LanWin2 project.
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The LanWin2 grid connection will link offshore wind generation in the German North Sea to the country’s main transmission network.
The use of Nexans’ 525kV HVDC XLPE subsea cables will enable large volumes of renewable electricity to be transmitted efficiently over long distances.
This development follows the successful qualification of the cable technology, marking a transition from the engineering and testing stage to full-scale production under the TenneT Frame Agreement, established in 2023.
The cables produced will be installed as part of TenneT’s programme to expand offshore grid connections that support Germany’s renewable energy integration efforts.
Nexans PWR-Transmission EVP Pascal Radue said: “This milestone marks the transition from qualification to full-scale manufacturing and delivery.
“Starting industrial-scale production of our 525kV HVDC XLPE subsea cable at industrial scale demonstrates the strength of our technology, our manufacturing capabilities and our commitment to supporting Europe’s energy transition.”
The LanWin2 project is one of several such grid systems being deployed by TenneT to facilitate the delivery of electricity from offshore wind farms to end users onshore.
Production of the cables demonstrates progress in the strategic partnership between Nexans and TenneT.
The agreement was created to secure supply chain capacity and accelerate infrastructure delivery as Europe’s energy transition continues.
Commissioning of the LanWin2 connection is expected by 2031. Nexans’ technology will also be used for the BalWin3 project, with cable installation in certain areas scheduled for 2027.
Both the LanWin2 and BalWin3 projects are said to be on schedule, continuing the implementation of TenneT’s plans for large-scale offshore grid expansion.
TenneT head of investment projects management and support Matthias Mensing said: “The start of cable production for LanWin2 is an important milestone for the project and for our 2GW programme as a whole.”
In March last year, Nexans signed a framework agreement with RTE to supply, install and commission 450km of HVDC subsea cables and 280km of HVDC cables for onshore connections.
