About
Founded in 1849, Jan De Nul is a renewable energy company headquartered in Aalst, Belgium with approximately 5000+ employees specializing in Wind.
Jan De Nul is a Belgian family-run group operating in four divisions: Offshore Energy, Dredging Solutions, Construction Projects and Planet Redevelopment. It is a total solutions provider for ports, waterways, land reclamation, coastal protection, infrastructure, soil remediation and offshore wind. The offshore energy division installs wind turbine foundations, subsea cables and offshore structures for wind farms across Europe and Asia. The company reported 2024 turnover above EUR 4 billion and a signed contract portfolio of EUR 9.55 billion. It has over 9,000 employees and rebranded its workforce as World Builders in 2024.
Headquarters
Founded
Employees
Focus areas
Products & services
Business models
Value chain
Service areas (4)
Offshore Energy
Installation, protection and dismantling of offshore energy structures, foundations, wind turbines and subsea cables.
Dredging Solutions
Maintenance, deepening and widening of waterways, port construction, reclamation and coastal protection.
Construction Projects
Civil engineering, infrastructure, tunnels, bridges and sustainable building projects.
Planet Redevelopment
Soil remediation, brownfield redevelopment, landfill management and water treatment.
Locations
Headquarters
Tragel 60, Aalst, Belgium
Projects
5Dogger Bank offshore wind farm
Transport and installation of 277 offshore wind turbines, each producing 13 or 14 MW.
Formosa 2 offshore wind farm
Installation of wind turbine foundations and subsea cables for an offshore wind farm expected to supply 380,000 households with green energy.
Gode Wind 3 and Borkum Riffgrund 3
Installation of 107 foundations for two German North Sea wind farms, with scour protection installed at all locations, completed in 2024.
Greenlink Interconnector
Installation and protection of two high-voltage DC cables and a fibre-optic cable over 160 km linking the Irish and British power grids.
Hornsea 3 subsea cables
Installation of 350 km of subsea cables for the Hornsea 3 offshore wind farm.
Credentials & affiliations
Certifications
ISO certificate
Safety Culture Ladder Offshore Energy Step 4
Safety Culture Ladder Dredging Benelux Step 3
CO2 Performance Ladder
Awards
Belgian Export Oscar
Most Attractive Employer
Industry memberships
Partnerships
Science Based Targets initiative, Flemish Concrete Agreement
