Jan De Nul, along with its consortium partners LS Cable & System and Denys, has signed contracts for two 525 HVDC cable systems. These systems will connect offshore wind farms to the onshore grid via the BalWin4 and LanWin1 grid connections.

These contracts are the first two to be signed under the long-term framework agreement signed earlier this year between TenneT and Jan De Nul. The projects will include designing, manufacturing, transporting, installing, protecting, and testing three 525 kV cable systems.

Jan De Nul will take care of the transport, installation, burial and protection of the offshore cables. For this, it will use a variety of its specialised vessels and assets including the Fleeming Jenkin, the company’s recently ordered XL cable-laying vessel. LS Cable & System will design, manufacture, terminate and test all cables with Denys being responsible for civil and cable pulling scope related to the onshore cable routes. Together, the three companies provide TenneT with the much-needed experience and innovative techniques in support of its ambitious 2GW Program. In total, more than 1,000 km of HVDC will be designed, manufactured, transported, installed, protected, and tested for these two projects.

Wouter Vermeersch, Manager Offshore Cables at Jan De Nul Group, said, “We are delighted to sign these first two projects under the partnership frame agreement we signed earlier this year with TenneT. This marks an important milestone in support of TenneT’s 2GWProgram and the construction of the energy transition. We look forward to providing delivery excellence of these projects within the challenging North Sea environment together with TenneT and our partners.”

BalWin4 and LanWin1 projects

The cable systems of the two grid connections BalWin4 and LanWin1 coming from the offshore converter stations will cross the Wadden Sea and be connected to the extra-high voltage grid in Unterweser. The grid connections will enable renewable electricity from offshore wind farms with a transmission capacity of altogether 4 GW to be fed into the German grid.

BalWin4 and LanWin1 are part of the 2GW program. With its transnational approach and a new standard for offshore grid connection systems, the 2GW Program accelerates European offshore grid expansion and secures energy supply for Europe. Together, the total of 14 offshore grid connections in the 2GW program will supply up to 35 million households with green wind energy.