Jan De Nul Group - EPC company profile

Jan De Nul Group: Explore engineering capabilities, representative projects and official company contacts.

Jan De Nul Group — Offshore energy, subsea cables, dredging and civil construction

Jan De Nul Group is a Belgian family-owned contractor active in offshore energy, dredging, civil construction and environmental services. Its offshore business undertakes EPCI and balance-of-plant contracts for wind farms, foundations, cable systems and grid connections. Jan De Nul may lead or participate in consortia, while turbine, cable-manufacturing and owner roles can belong to other parties; the references below state the disclosed scope.
  • Legal name: Jan De Nul Group
  • Headquarters: Aalst, Belgium
  • Founded: 1938
  • Official website: Jan De Nul Group
  • URL: https://voltformer.com/epc-contractors/jan-de-nul
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CEO and leadership profile

Julie De Nul

Chief Executive Officer

Became CEO of Jan De Nul Group in 2023. She represents the sixth generation of the family enterprise; the company’s official history highlights her focus on its people and employee development.

  • In role since: 2023
  • Sources checked: 2026-10-04
  • Profile: Julie De Nul

Jan De Nul · Company history (CEO appointment) · Jan De Nul · Company profile

How to select an EPC contractor

EPC means engineering, procurement and construction. Compare contractors by project technology, country, voltage level and contractual delivery scope.

Directory methodology

This directory presents company profiles, not a scored ranking or certification. Company-wide experience may include engineering, EPCM, equipment supply and consortium roles. Confirm the exact role, current qualifications and project references with the official company before shortlisting.

What should an EPC enquiry include?

Specify the project country, capacity, grid voltage, single-line diagram, site conditions, scope boundaries, target schedule and acceptance tests. Clarify who owns permitting, civil works, grid studies, commissioning and performance guarantees.

Equipment enquiries submitted here go to Voltformer. Contact the listed company directly for its EPC services.

Engineering specializations

  • Offshore wind foundations and balance of plant
  • Subsea export and inter-array power cables
  • Offshore substations, installation and grid connections
  • Dredging, civil construction and environmental remediation

Declared capabilities

  • Basic and detailed engineering: Listed capability; confirm project-specific scope
  • Procurement and supply: Listed capability; confirm project-specific scope
  • Civil and structural construction: Listed capability; confirm project-specific scope
  • Testing and commissioning: Listed capability; confirm project-specific scope
  • High-voltage substation EPC: Listed capability; confirm project-specific scope
  • Transmission lines: Listed capability; confirm project-specific scope
  • Turnkey power plant EPC: Not listed
  • Grid interconnection: Listed capability; confirm project-specific scope

Representative projects

Formosa 1 Phase 2 offshore wind farm

  • Capacity / scope: EPC foundations for 20 turbines; design, purchase and installation of 17 inter-array and 3 export cables; 12 km onshore cable trench
  • Country: Taiwan | Client: Formosa 1 Wind Power Co. Ltd. | Year: 2019
  • Description: Jan De Nul completed this EPCI scope in 2019: foundations, scour protection and cable systems. The 20 turbines in phase 2 added 120 MW to the two-turbine, 8 MW demonstration phase; turbine supply belonged to other parties.
  • Technologies: Offshore wind, Monopile foundations, Inter-array cables, Export cables
  • Original source: https://www.jandenul.com/news/landmark-achievement-jan-de-nul-asia

Taiwan Power Company Offshore Wind Farm Phase 1

  • Capacity / scope: Consortium EPCI for 21 × 5.2 MW turbines and full balance of plant; Jan De Nul’s scope included foundations, vessel provision, cables and onshore substation upgrade
  • Country: Taiwan | Client: Taiwan Power Company; Jan De Nul–Hitachi consortium | Year: 2021
  • Description: The consortium held the overall EPCI contract. Jan De Nul describes its own balance-of-plant and electrical scope; Hitachi manufactured, assembled and installed the turbines. Five-year O&M was assigned to the consortium after delivery.
  • Technologies: Offshore wind, Jacket foundations, Offshore and onshore cables, Substation upgrade
  • Original source: https://www.jandenul.com/our-projects/offshore-windfarm-changhua-taiwan

Princess Elisabeth Island to onshore grid cables

  • Capacity / scope: Supply, installation and testing of three 220 kV AC subsea cables connecting island to Belgian onshore grid
  • Country: Belgium | Client: Elia Transmission Belgium; consortium with LS Cable & System | Year: Contract awarded 2024; delivery in progress
  • Description: Jan De Nul and LS Cable & System jointly won the cable contract. This is an electrical connection package distinct from TM EDISON’s construction of the island foundations.
  • Technologies: 220 kV AC cables, Subsea export cables, Offshore grid connection, Renewable integration
  • Original source: https://www.jandenul.com/news/new-contract-connect-princess-elisabeth-island-belgian-high-voltage-grid

Technical services

  • Offshore wind EPCI and BoP: Engineering, fabrication coordination, transport and installation of foundations, cables and other balance-of-plant infrastructure.
  • Subsea cable delivery: Design, procurement coordination, transport, installation, burial, protection and testing, directly or with cable-manufacturing partners.
  • Marine construction: Dredging, reclamation, port works, coastal protection and offshore construction using specialized vessels.
  • Civil and environmental projects: Large civil works and contaminated soil treatment alongside the group’s marine and energy activities.

Standards and certifications

Official contacts

  • Address: Tragel 60, 9308 Hofstade-Aalst, Belgium
  • Official website: https://www.jandenul.com/contact

Reference statistics

  • Employees (company announcement, 2025): More than 9,000
  • Founded: 1938
  • Business heritage: Family-owned, sixth generation

Company and energy news

Other languages

EPC contractors · Voltformer catalog

CEO and leadership profile

Julie De Nul

Chief Executive Officer

Became CEO of Jan De Nul Group in 2023. She represents the sixth generation of the family enterprise; the company’s official history highlights her focus on its people and employee development.

In role since
2023
Sources checked

Official profile and sources

Company news

How to select an EPC contractor

EPC means engineering, procurement and construction. Compare contractors by project technology, country, voltage level and contractual delivery scope.

Directory methodology

This directory presents company profiles, not a scored ranking or certification. Company-wide experience may include engineering, EPCM, equipment supply and consortium roles. Confirm the exact role, current qualifications and project references with the official company before shortlisting.

What should an EPC enquiry include?

Specify the project country, capacity, grid voltage, single-line diagram, site conditions, scope boundaries, target schedule and acceptance tests. Clarify who owns permitting, civil works, grid studies, commissioning and performance guarantees.

Equipment enquiries submitted here go to Voltformer. Contact the listed company directly for its EPC services.

Company information is translated from the same reference record; official names and technical ratings are preserved.