Positive
Project advancing - milestone achieved
Medium Impact
Significant progress or notable issue
Jan De Nul, together with partner Hellenic Cables, completed the 2025 transport and installation campaign for three 155 kV HVAC grid connection cables totalling 37 km that link the Nordseecluster 1 and 2 offshore wind farm sites to TenneT’s DolWin kappa offshore converter platform for the DolWin6 project. Using the cable-laying vessel Isaac Newton, the multi-purpose vessel Adhémar de Saint-Venant, and the rock installation vessel Simon Stevin, the contractors installed, buried, and protected the cables, which will transmit almost 660 MW of power from Nordseecluster 1 and 2 into the DolWin6 HVDC grid connection, with the campaign reported as finished in mid-December 2025.