BESIX Group - EPC company profile

BESIX Group: Explore engineering capabilities, representative projects and official company contacts.

BESIX Group — Belgian EPC and construction group for energy, industry and infrastructure

BESIX Group is a Belgian industrial and construction group founded in 1909. Contracting is its core business, with an official track record in EPC and DBFM delivery worldwide. Its activities span construction and infrastructure, while specialist affiliates work in energy and utilities. Project references below distinguish construction/EPC packages from partner work and project-development roles.
  • Legal name: BESIX Group SA
  • Headquarters: Woluwe-Saint-Lambert, Belgium
  • Founded: 1909
  • Official website: BESIX Group
  • URL: https://voltformer.com/epc-contractors/besix
  • Markdown: https://voltformer.com/epc-contractors/besix.md
  • JSON: https://voltformer.com/epc-contractors/besix.json

CEO and leadership profile

Pierre Sironval

Chief Executive Officer

Pierre Sironval is CEO of BESIX Group. The company’s official governance page identifies him in that role; BESIX describes contracting as its core business and cites an EPC and DBFM track record worldwide.

BESIX · Executive and Strategic Committee · BESIX · Group 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

  • EPC and design-build delivery
  • Data-centre core, shell and building services coordination
  • Energy transition and renewable-energy infrastructure
  • Civil, structural and industrial construction

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: Not listed
  • Transmission lines: Not listed
  • Turnkey power plant EPC: Not listed
  • Grid interconnection: Not listed

Representative projects

Hyperscale data centre, Hainaut

  • Capacity / scope: EPC contract for core and shell; BESIX package includes foundations, underground utilities, civil and structural works, shell and landscaping
  • Country: Belgium | Client: Confidential client; temporary joint venture with Jan De Nul | Year: Awarded 2026; in progress
  • Description: BESIX and Jan De Nul won the contract as a temporary joint venture. BESIX lists the specified construction package; data-centre equipment and fit-out outside core and shell are not attributed to BESIX here. The client and facility capacity were not disclosed in the release.
  • Technologies: Data centre, EPC, Civil and structural works, Building envelope
  • Original source: https://www.besix.com/nl/news/besix-wint-nieuw-contract-voor-grootschalig-datacenter-in-wallonie

KevlinX Data Centre, Brussels

  • Capacity / scope: BESIX delivered civil, structural and architectural works for phases 1A and 1B of a 40 MVA facility; Equans handled MEP design and installation
  • Country: Belgium | Client: KevlinX Data Centre | Year: 2025
  • Description: BESIX and Equans delivered the design-and-build project, with handover recorded on 2 December 2025. The 40 MVA figure describes the facility; BESIX scope covered civil, structural and architectural works, including decontamination, while Equans delivered mechanical, electrical and plumbing systems.
  • Technologies: Data centre, Design and build, Civil and structural works, Tier III standard
  • Original source: https://www.besix.com/en/news/besix-delivers-state-of-the-art-data-centre-for-kevlinx-near-brussels-belgium

Piper-BW renewable energy hub

  • Capacity / scope: Development agreement for a renewable-energy hub; planned 12,000 PV panels, 2 MW battery storage and eight truck fast chargers
  • Country: Belgium | Client: inBW; BESIX Power | Year: Development and phased delivery ongoing
  • Description: BESIX Power and inBW announced an agreement to develop the hub at Mont-Saint-Guibert. BESIX Power’s stated role covers development, financing and future local operation; construction is phased and ongoing, so the full planned capacity is not described as completed EPC work.
  • Technologies: Solar PV, Battery energy storage, EV charging, Renewable energy hub
  • Original source: https://www.besix.com/en/news/besix-power-signs-an-agreement-to-develop-the-piper-bw-renewable-energy-hub

Technical services

  • Engineering, procurement and construction: Contracting delivery for complex construction and industrial projects, including EPC and design-build arrangements.
  • Civil and structural works: Foundations, underground utilities, structural concrete, building envelopes and associated site works.
  • Energy transition projects: Delivery and development through specialist affiliates for renewable energy, storage and supporting infrastructure; contract roles depend on each project.
  • Concessions and DBFM: Design-build-finance-maintain delivery through concession structures, with BESIX participation and operating responsibilities defined per contract.

Standards and certifications

  • BESIX Contracting: ISO 9001 and ISO 14001; BESIX SA and several Group entities: ISO 45001 (scope varies by entity)

Official contacts

  • Address: Avenue des Communautés 100, 1200 Woluwe-Saint-Lambert, Belgium
  • Telephone: +32 (0)2 402 62 11
  • Official website: https://www.besix.com/en/contact

Reference statistics

  • Founded: 1909
  • 2025 revenue: €4.158 billion
  • Order book at 2025 year-end: €6.7 billion
  • Adjusted EBITDA (2025): €141 million

Company and energy news

Other languages

EPC contractors · Voltformer catalog

CEO and leadership profile

Pierre Sironval

Chief Executive Officer

Pierre Sironval is CEO of BESIX Group. The company’s official governance page identifies him in that role; BESIX describes contracting as its core business and cites an EPC and DBFM track record worldwide.

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.