HSM Offshore Energy has successfully completed and delivered the offshore substation for the 1100MW Thor wind farm, Denmark’s largest offshore wind project to date, the company announced today.
The substation and its jacket foundation have now left HSM’s Schiedam yard in the Netherlands and are en route to their installation site, around 22km off the west coast of Jutland.
The Thor wind farm is a joint venture between RWE, which holds a 51% stake, and Norges Bank Investment Management with 49%. Once operational in 2027, the project will supply more than one million Danish households with clean electricity.
HSM Offshore Energy was awarded the full EPCIC (Engineering, Procurement, Construction, Installation, and Commissioning) contract in 2022. The delivery includes both the topside and the jacket foundation.
The topside measures 39 x 36 x 18 metres and weighs 2,600 tonnes, while the jacket is 40 x 40 x 50 metres and weighs 2,500 tonnes.
According to HSM, the Thor offshore high voltage substation (OHVS) features the best power-to-weight ratio in the sector, offering a compact and efficient design that reduces material use and installation costs.
“Delivering the THOR substation from first steel to sail-away has been a highly rewarding and technically complex journey,” said Koen Moons, Project Manager at HSM Offshore Energy. “This achievement reflects the deep dedication, expertise, and teamwork across all disciplines, partners and subcontractors.”
Günther Fenle, Project Director for Thor at RWE, added: “The sail-away of the fully assembled substation is an important step for us in the project team. We are looking forward to the installation at sea later this summer and the commissioning of the systems thereafter.”
The Thor substation will collect and transform power from 72 wind turbines before transmitting it to the onshore grid at Volder Søndervang.