TenneT 525 kV Power Cable Projects Strengthen Europeโs Energy Grid
TenneT, the transmission system operator (TSO) for the Netherlands and parts of Germany, has launched majorย TenneT 525 kV power cable projectsย worth aboutย โฌ5.5 billion. The company selectedย NKT,ย Nexans, and a consortium ofย LS Cable,ย Jan De Nul, andย Denysย to design, produce, and install nearlyย 7,000 kilometersย of highโvoltage cables for offshore and onshore systems.
This investment supports TenneTโs mission to expand 525 kV direct current (DC) infrastructure across Europe. As a result, these projects will greatly enhance renewable power integration, reinforce grid reliability, and help meet Europeโs clean energy targets.
TenneT 525 kV Power Cable Projects Expand Grid Capacity
TenneT currently operates more thanย 25,000 kilometersย of highโvoltage lines and cables across the Netherlands and Germany. With its 525 kV power cable expansion, the company continues to extend its grid connections both offshore and onshore.
The framework includesย 14 offshore wind power links, five already operational in early 2023, plus one large onshore DC project. Each connection will transmitย 2 gigawatts (GW)ย of electricity, further advancing Europeโs energy transition.
NKT Powers Key Sections of the TenneT 525 kV Expansion
NKTย will deliver cable systems forย Nederwiek 3,ย Doordewind 1, andย Doordewind 2, located in Geertruidenberg, Moerdijk, and Eemshaven. The order coversย 100 km of onshoreย andย 300 km of offshoreย cable.
To avoid environmental disruption in the Capbreton Canyon, NKT will divide the project into multiple onshore and offshore segments. In addition, the company will manufacture the cables at itsย Karlskrona, Sweden, highโvoltage plant, with full commissioning expected inย 2028.
Nexans Advances TenneT 525 kV Power Cable Projects in Germany
Nexansย will supply highโvoltage DC cables forย BalWin3ย andย LanWin4, which connect toย Wilhelmshaven, and forย LanWin2, extending toย Heideย in SchleswigโHolstein. These systems will improve Germanyโs offshore power delivery and strengthen national grid reliability.
LS Cable Consortium Expands the 525 kV Network in Lower Saxony
Theย LS CableโJan De NulโDenysย consortium will manageย BalWin4,ย LanWin1, andย LanWin5, connecting to the Unterweser and Rastede areas. Furthermore, the team will support theย NordOstLinkย project in SchleswigโHolstein, part of theย TenneT 525 kV power cable projects.
NordOstLink represents a joint effort between TenneT and German TSOย 50Hertz. Together, the companies will deliver a smarter, stronger, and more interconnected power grid for northern Europe.
Future of Europeโs 525 kV Transmission Infrastructure
The contracts include all aspects of engineering, production, project management, and construction. Work began inย 2023, with onshore installation planned afterย 2025ย and offshore cable laying starting inย 2026.
Each offshore connection providesย 2 GWย of capacity and will come online byย 2031;ย NordOstLinkย will follow inย 2032.
TenneT COOย Tim Meyerjรผrgensย highlighted the importance of this largeโscale effort:
โWith this award, we will implement around 7,000 km of DC cable for onshore and offshore systems in Germany and the Netherlands by 2032.โ
Each 2 GW system will feature aย positive and negative conductor, aย metallic return, and aย fiberโoptic cableย for realโtime monitoring and communication.
