DEME’s Offshore Energy division posted EBITDA of €655 million for 2025, representing a 52% increase year-on-year. Turnover from the offshore wind business reached €2.13 billion, up 4% versus 2024, while EBIT rose 54% to €398.3 million, based on the company’s full-year results.
The order book ended the year at €4.24 billion, broadly consistent with the prior year. The backlog was supported by follow-on work, the addition of Havfram, and newly secured contracts, including Formosa 4 in Taiwan, Nordseecluster B in Germany, and BC Wind in Poland.
Fleet utilisation stayed elevated at 85%, equivalent to 44 weeks of activity, compared with 90% or 47 weeks in 2024.
In the United States, the division installed all 176 monopiles at Dominion Energy’s Coastal Virginia Offshore Wind project and has progressed to transition piece and offshore substation installation. This stage is expected to conclude before the end of the first half of 2026. At Vineyard Wind, turbine and blade installation is being completed, while Empire Wind 1 saw cable installation works carried out; both projects are expected to be finalized in the first half of 2026.
Across APAC, DEME’s joint venture finished installing all jacket foundations at the Hai Long project using Green Jade and continues with turbine installation, with Sea Challenger scheduled to start operations in April 2026. At Greater Changhua, seabed preparation and scour protection for the offshore substation have been completed. At Fengmiao, preparations are advancing to begin pin pile installation in the first quarter of 2026.
In Europe, DEME finalized its scope at Île d’Yeu and Noirmoutier, installed the offshore substation and began jacket installation at Dieppe–Le Tréport, and started inter-array and export cable installation at Baltic Power, with work continuing into 2026. In the UK, following completion of cabling at Neart Na Gaoithe and Dogger Bank A and B, activities have commenced on Dogger Bank C. The heavy-lift jack-up vessel Innovation also completed a decommissioning campaign in the North Sea.
During the second quarter of 2025, DEME completed the acquisition of Havfram, adding next-generation wind turbine installation vessels Norse Wind and Norse Energi. Norse Wind was delivered in the fourth quarter of 2025 and is expected to start turbine installation works for Vestas in the first half of 2026. Norse Energi was delivered in January 2026 and is scheduled to begin its first project activities in the third quarter of 2026.
Separately, the Offshore Energy segment ordered a new Offshore Construction Vessel to expand subsea cable installation capacity alongside Living Stone and Viking Neptun.
