Offshore installation teams from Belgium-based Jan De Nul have completed the shore landing of two export cables for the Thor offshore wind project, Denmark’s largest wind energy development to date.
The cables, designed to transport renewable electricity from the wind farm site located 22 km off the Danish coast in the North Sea, mark a key milestone in the project’s construction. Once operational, the 1-gigawatt facility is expected to supply power to more than one million Danish households.
The Thor project is jointly owned by Germany’s RWE, holding a 51% stake, and Norges Bank Investment Management, which owns the remaining 49%.
Jan De Nul, working in collaboration with cable manufacturer Hellenic Cables, was awarded the turnkey contract in 2023 to supply and install both the export and inter-array cable systems. The export cables, rated at 275kV HVAC, each consist of a 13 km onshore segment and a 30 km offshore segment. The contract also includes the installation of 200 km of 66kV inter-array cables connecting 72 wind turbines.
Hellenic Cables is responsible for the design and manufacturing of all cables, while Jan De Nul handles transportation, laying, and burial.
“The successful cable pull-in marks an important step in the delivery of the Thor project,” a Jan De Nul spokesperson said. “We are proud to contribute to the energy transition in Denmark.
Electricity production from the wind farm is expected to begin in 2026, with full commissioning anticipated by the end of 2027.
