With a total turnover of EUR 4.24 billion, Jan De Nul recorded a six per cent increase compared to 2024. The company achieved its turnover in 2025 through 298 projects in 31 countries.
EBITDA rose from EUR 777 million in 2024 to EUR 812 million in 2025, following the same trend. Net profit rose by twelve per cent to EUR 458 million. Jan De Nul published its annual figures on Thursday, 21 May, and reports record turnover for the fourth year running.
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Maritime construction projects
The maritime sector accounts for 74 per cent of Jan De Nul’s turnover. This includes the construction of offshore wind farms, the installation of subsea cables to transport energy, the maintenance of access channels and the expansion of port infrastructure.
The company’s various construction, remediation and redevelopment projects represent 26 per cent of turnover. In 2025, Jan De Nul completed the infrastructure works for the F-35A fighter jets at Florennes Air Base, ahead of the aircraft’s arrival on Belgian soil in October 2025. Other major projects include the Oosterweel link, the new traffic junction near Brussels Airport, the energy island in the Belgian North Sea and the development of the new “MALT” district in Mechelen.
CFO Jan Neckebroeck: ‘Jan De Nul remains active worldwide with maritime infrastructure projects, covering both offshore energy and dredging works. The various construction, remediation and redevelopment projects have also contributed to achieving another record turnover. Jan De Nul’s strong financial position, including a net debt-free position, allows us to invest in new vessels, land-based equipment and research. We are prepared for the future.’
Geographical diversification as a buffer
Jan De Nul achieved this turnover through a broad geographical spread, with 298 projects in 31 countries. More than fifty per cent of its turnover comes from Europe, mainly because of a large portfolio of offshore wind energy projects. The construction of a new port in Senegal contributed significantly to the increase in turnover in Africa. The Middle East, North and South America, and Asia also remain important markets.
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Over a billion euros in investments
With five new vessels for the installation and protection of subsea energy cables on the way, Jan De Nul is making major investments to strengthen its position in the energy sector. In doing so, the company is anticipating the global need for energy security. This drives different regions around the world to develop a balanced energy mix and to interconnect energy grids.
In addition, the company continues to invest in the expansion and renewal of its dredging fleet and focuses on innovative remediation techniques to tackle complex contamination, such as PFAS. As a long-standing partner of the Belgian government, it also continues to focus on the development of infrastructure. The ongoing investments for the coming years are worth well over a billion euros.
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Reinvesting profits
Despite this wave of investment, Jan De Nul has been net debt-free since 2014. As a privately held company, Jan De Nul consistently chooses to reinvest its profits back into the business. This financial strength is one of the company’s key assets.
Neckebroeck: ‘But our greatest asset remains our global team of more than 8800 World Builders. We continue to invest in them as well. We do this, among other things, through our four internal programmes on safety, personal development, sustainability and health, launched in 2025.’
Picture: Installation of subsea cables for the Danish offshore wind farm Thor (photo Jan De Nul).
