Deme reported increased earnings for 2025, with offshore wind installation activities contributing significantly to performance in its offshore energy segment. In Europe, Deme completed monopile and transition piece installation at the Île d'Yeu and Noirmoutier offshore wind farm and progressed works at Dieppe–Le Tréport offshore wind farm.
Cable installation continued at Dogger Bank A, Dogger Bank B and Dogger Bank C in the United Kingdom. Preparatory activities were undertaken for IJmuiden Ver Alpha, Nederwiek 1 and OranjeWind, with offshore installation scheduled for 2026. In Poland, cable installation started at the Baltic Power offshore wind farm.
In the USA, the company completed installation of 176 monopiles at Coastal Virginia Offshore Wind and continued turbine installation at Vineyard Wind. Both projects are expected to reach completion in the first half of 2026.
In Taiwan, jacket foundation installation was finalised at the Hai Long offshore wind project, with turbine installation continuing into 2026. Works also progressed at Greater Changhua offshore wind project, and preparations began for Fengmiao offshore wind farm.
During the year, Deme completed the acquisition of Havfram, adding two wind turbine installation vessels to its fleet. Norse Wind was delivered in the fourth quarter of 2025 and Norse Energi in January 2026. Both vessels are scheduled to begin project work in 2026. The company also ordered an additional offshore construction vessel to expand subsea cable installation capacity, with delivery expected in 2028.
Group turnover reached € 4.2 billion, broadly in line with the previous year. Earnings before interest, tax, depreciation and amortisation rose to 931 million euros, up 22% year on year. Within this, the offshore energy segment recorded earnings of € 655 million, an increase of 52% compared with 2024, with the margin rising to 31% from 21%. The segment accounted for around 49% of total group turnover and maintained an order book above € 4.2 billion. Fleet utilisation averaged 85% during the year.
For 2026, the company expects turnover and earnings margin to remain broadly in line with 2025 levels.
