Hellenic & Jan De Nul Consortium

The Hellenic & Jan De Nul Consortium is a long‑term partnership between Hellenic Cables, the cables segment of Cenergy Holdings, and Belgian marine contractor Jan De Nul Group, focused on turnkey high‑voltage subsea and land cable systems for offshore wind and interconnector projects. Within the consortium, Hellenic Cables designs, manufactures, tests and commissions high‑ and extra‑high‑voltage AC and DC power cables at its vertically integrated plants in Corinth and Thiva, Greece, while Jan De Nul provides engineering, transport, offshore installation, burial and protection using its dedicated cable‑laying vessels and subsea trenchers. The consortium delivers full EPCI cable packages for developers and transmission system operators across multiple European markets. It is responsible for the complete export and inter‑array cable systems for RWE’s 1 GW Thor offshore wind farm in the Danish North Sea, including about 60 km of export cables and roughly 200 km of 66 kV inter‑array cables. For Equinor and Polenergia’s 720 MW Bałtyk II and 720 MW Bałtyk III projects in Poland, the partners will design, manufacture, transport and install four 220 kV HVAC export cables with a combined length of 256 km to connect the wind farms to shore. In Germany, the consortium is supplying and installing three 155 kV HVAC grid‑connection cables between TenneT’s DolWin kappa converter station and the N‑3.7 and N‑3.8 offshore wind zones. As one of the appointed cable suppliers under National Grid’s multi‑billion‑pound HVDC framework in the UK and Europe, and through framework agreements with RTE in France for the 225 kV Bretagne Sud export systems, the consortium is positioned as a strategic provider of subsea and onshore transmission links that enable large‑scale offshore wind integration and cross‑border interconnections.