Omexom

What Omexom does

Omexom is the energy infrastructure brand of VINCI Energies, itself a division of the French-listed VINCI Group, and operates as a unified network of approximately 570 business units across 36 countries with around 25,000 employees and roughly €6 billion in annual turnover. The company is headquartered in Nanterre, France, alongside VINCI Energies Management. It delivers engineering, procurement, and construction (EPC) services plus recurring operations and maintenance (O&M) across the full electricity value chain, spanning low-carbon power generation, high-voltage transmission, substations, distribution networks, and urban energy solutions such as EV charging infrastructure.

Its proprietary technology stack includes ACOUSTISCAN, an acoustic surveillance system for monitoring the integrity of offshore wind turbine foundations co-developed with Seven Bel, and OPM-Box, an in-house power management solution. Omexom sells primarily to three customer segments: Transmission and Distribution System Operators (TSOs/DSOs), renewable energy developers, and large industrial energy consumers. Named customers include E.ON, National Grid, Centrica, Fingrid, Fortum, Neoen, Eneco Renewables, Baltic Power, ZE Energy, and ENERGISA Group. Revenue is earned through two main streams: project-based EPC contracts awarded via competitive tendering (one-time, multi-year delivery) and recurring multi-year O&M service agreements. Pricing is project-specific, not publicly disclosed, and contracts are awarded based on technical capability, track record, and price competitiveness.

The company positions itself as an independent system integrator, not tied to any specific equipment OEM, which it markets as enabling objective technology selection for clients. Its largest strategic commitment is the Omexom-Taylor Woodrow joint venture with VINCI Construction, partnering with National Grid on UK electricity transmission infrastructure valued at approximately £8 billion. Recent growth has been driven by acquisitions and rebrandings (TLT-Building/TLT-Connection in Finland in October 2022, Electrix in New Zealand in April 2023, Otera AS in Norway in February 2024) and by major product and project milestones such as the world's first 400 kV G3 substation at Kintore, Sweden's first wooden transformer station in Karlshammar, and the 2026 launches of OnShoreBox (modular port substation) and ACOUSTISCAN's commercial debut at The Smarter E Europe 2026.

Name

Omexom

Legal name

VINCI Energies Management

Website

https://omexom.com

Company type

Private

Founded year

2000

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Omexom is the energy infrastructure brand of VINCI Energies, delivering EPC and O&M services across generation, transmission, substations, and distribution for TSOs, DSOs, and renewable energy developers in 36 countries. It operates 570 business units with €6 billion turnover and 25,000 employees.

Ownership category

akta.pro rank

Product category

Energy Infrastructure Services

NAICS

Electric Power Distribution (221122)

akta.pro primary industry

Distribution Substations & Switching Stations (MV) EPC (EUAEACAC)

akta.pro secondary industries

Power Plant Electrical Systems EPC (Switchyard, Transformers, Protection & Controls) (EUAEAAAM), FACTS / Reactive Power & Power Quality Systems EPC (SVC/STATCOM, Capacitor Banks) (EUAEABAE), Outage Management System (OMS) Software (EUADAEAC)

Keywords

• Energy infrastructure services
• Grid engineering construction
• Power transmission substations
• Renewable energy connections
• Offshore wind operations

Headquarters

HQ city

Puteaux

HQ country

France

HQ region

Europe

Offices4 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Supply Chain, Infrastructure, Technology or R&D, Marketing or Sales

Revenue model

1. Engineering, Procurement & Construction (EPC): One-time project-based revenue from the design, procurement, and construction of energy infrastructure including substations, transmission lines, cable systems, and renewable energy connections. Revenue is earned through competitive tendering on large infrastructure contracts, with multi-year project delivery timelines.
2. Operations & Maintenance (O&M): Recurring revenue from ongoing operations and maintenance services for energy infrastructure assets including offshore wind farms, battery storage facilities, and transmission networks. Contracts are typically multi-year service agreements with system operators and asset owners.
3. Grid Connection Services: Revenue from engineering and construction services to connect renewable energy projects (solar, wind, battery storage) to the grid. Projects are typically awarded through competitive tendering by TSOs, DSOs, and energy developers.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Omexom provides engineering, procurement, construction (EPC) and operations & maintenance (O&M) services across the full electricity value chain for utilities and large energy consumers. The offering covers HV/MV substations, transmission lines, distribution networks, renewable energy grid connections (notably offshore wind), and urban energy solutions such as EV charging and microgrids. It also supplies proprietary monitoring products including ACOUSTISCAN and OPM-Box, and operates in 36 countries through local subsidiaries under the VINCI Energies umbrella.

Differentiator

Problem solved

Functional benefit

Products and services

• Power Generation and HV/MV Transmission Infrastructure Services Engineering, procurement, construction and maintenance services for high-voltage and medium-voltage transmission assets, including substations and transmission lines, delivered to utilities, TSOs and DSOs across 36 countries.
• Distribution Networks Services Build, upgrade and operate medium- and low-voltage distribution networks for distribution system operators and large industrial sites.
• Renewable Energy Grid Connections (Offshore and Onshore) Full-scope grid connection services for renewable energy projects, covering onshore substations, export cables, offshore substations and commissioning for wind and solar developers.
• Urban Energy Solutions (EV charging, microgrids, public lighting) Design, build and operate urban energy infrastructure including EV charging networks, microgrids and public lighting for cities, infrastructure operators and large industrial energy consumers.
• Operations & Maintenance Services for Energy Assets Long-term operations, maintenance and asset-management services for substations, transmission and distribution assets delivered to utilities and industrial clients, typically under multi-year framework agreements.
• ACOUSTISCAN Partial Discharge Diagnostic System Proprietary acoustic-based diagnostic system used to detect and localise partial discharge events in HV substation equipment, sold to utilities and industrial operators for asset condition monitoring.
• OPM-Box Cable Monitoring Platform Proprietary monitoring platform for underground and submarine transmission cables, providing continuous online monitoring of cable health for grid operators.
• OnShoreBox Containerised Substation Pre-engineered, containerised substation product that enables rapid deployment of grid connection points for utilities, renewable developers and industrial sites, reducing on-site construction time.

Quantifiable outcome

• Omexom operates across 36 countries with 570 business units and approximately €6 billion in annual turnover.

Named customers11 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

19 partnerships are on record, tiered core, flagship and minor.

• Seven BelcoreStrategic or Co-development PartnerOmexom and Seven Bel jointly developed ACOUSTISCAN, an acoustic surveillance solution for monitoring the condition of offshore wind turbine foundations. This co-development partnership enables Omexom to offer advanced asset integrity monitoring services to offshore wind farm operators, differentiating its O&M offering with proprietary technology.
• Hitachi Energy UK LimitedcoreStrategic or Co-development PartnerOmexom and Hitachi Energy UK Limited signed a Memorandum of Understanding (MoU) for integrated GIS (Gas Insulated Switchgear) applications in the UK energy market. The partnership combines Hitachi Energy's equipment technology with Omexom's infrastructure engineering and construction capabilities for grid projects.
• National GridflagshipStrategic or Co-development PartnerOmexom formed a joint venture with Taylor Woodrow (part of VINCI Construction) called 'Omexom-Taylor Woodrow' to partner with National Grid on electricity transmission infrastructure projects in the UK. This is a flagship strategic partnership valued at approximately £8 billion, representing one of the largest energy infrastructure programs in the UK.
• CentricacoreStrategic or Co-development PartnerOmexom partnered with Centrica on battery storage projects in Sweden, providing engineering, procurement, and construction services for utility-scale energy storage installations that support grid stability and renewable energy integration.
• NIOminorStrategic or Co-development PartnerOmexom delivered a battery replacement station for electric vehicles in Norway in collaboration with NIO, demonstrating capabilities in EV charging and battery swap infrastructure.
• Eneco RenewablescoreImplementation/ SI/ Consulting PartnerOmexom provides operations and maintenance services for Eneco Renewables' offshore wind assets, ensuring optimal performance and reliability of wind farm infrastructure through specialized O&M expertise.
• Baltic PowercoreImplementation/ SI/ Consulting PartnerOmexom delivers operations and maintenance services for Baltic Power's offshore wind projects, supporting the long-term operational performance of wind farm assets in the Baltic Sea region.
• ZE EnergycoreImplementation/ SI/ Consulting PartnerOmexom developed battery storage facilities in France for ZE Energy, providing EPC services for large-scale energy storage projects that support grid stability and renewable energy integration in the French market.
• NeoencoreImplementation/ SI/ Consulting PartnerOmexom provides engineering, procurement, and construction services for Neoen's solar projects, delivering grid connection and infrastructure solutions for utility-scale solar installations.
• FortumcoreImplementation/ SI/ Consulting PartnerOmexom delivers grid connection services for Fortum in Finland, providing the engineering and construction expertise needed to connect energy assets to the Finnish transmission network.
• FingridcoreImplementation/ SI/ Consulting PartnerOmexom provides services for Finnish Transmission System Operator Fingrid, supporting grid infrastructure projects and transmission network development in Finland.
• E.ONcoreImplementation/ SI/ Consulting PartnerOmexom delivers Swedish grid infrastructure projects for E.ON including substations and transmission connections, serving as a trusted EPC partner for one of Europe's largest energy companies in the Nordic market.
• Daimler Buses SolutionsminorStrategic or Co-development PartnerOmexom partnered with Daimler Buses Solutions on electric bus charging infrastructure, providing engineering solutions for EV bus charging deployment.
• Circle KminorStrategic or Co-development PartnerOmexom partnered with Circle K on EV charging hubs in Norway, delivering charging infrastructure solutions for the retail fuel network's transition to electric mobility.
• Umeå Energi ElnätcoreImplementation/ SI/ Consulting PartnerOmexom provides substation construction and grid connection services for Umeå Energi Elnät in Sweden, supporting local distribution network development in the Umeå region.
• HSM OffshorecoreImplementation/ SI/ Consulting PartnerOmexom partners with HSM Offshore for the delivery of offshore substations in the Netherlands, combining expertise for complex offshore wind electrical infrastructure projects.
• Norsk e-FuelminorImplementation/ SI/ Consulting PartnerOmexom provides project delivery services for Norsk e-Fuel's synthetic fuel production facility in Finland, including energy infrastructure and grid connection requirements.
• ENERGISA GroupcoreImplementation/ SI/ Consulting PartnerOmexom delivers transmission infrastructure projects for the ENERGISA Group in Brazil, providing engineering and construction services for the expansion and modernization of electricity transmission networks.
• Capim Branco Energia ConsortiumminorImplementation/ SI/ Consulting PartnerOmexom participates in the Capim Branco Energia Consortium for electricity transmission infrastructure in Brazil, delivering specialized engineering and construction services as part of the consortium.

Scale indicators5 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• MYR Group: US-based specialty contractor providing electrical construction services for transmission and distribution, commercial, and industrial markets. Closely comparable in core T&D construction services and project-based contracting model, though smaller scale and geographically concentrated in North America.
• Quanta Services: Largest pure-play electric power infrastructure services company in North America, providing EPC and O&M for transmission, distribution, and renewable energy projects. Closely comparable in business model (multi-year project-based tendering) and customer base (utilities, TSOs, developers), though primarily US-focused with larger scale.
• SPIE: French-headquartered multi-technical services group providing electrical, mechanical, and energy infrastructure services across Europe. Closely comparable in services to T&D operators, renewable developers, and industrial energy users, with similar geographic and customer profile.
• Eltel Group: Nordic-headquartered power infrastructure services company providing EPC and O&M for transmission, distribution, and substation projects across the Nordics, Baltics, and parts of Europe. Closely comparable to Omexom in business model (project-based tendering), customer base (Nordic TSOs/DSOs), and service mix.
• Burns & McDonnell: US-based engineering, architecture, and construction firm providing EPC services for electric power transmission, distribution, and generation projects. Closely comparable in EPC service delivery for utilities and renewable developers, though employee-owned private structure.

Broad incumbents

• Eiffage: French construction and concessions group with significant energy services operations (Eiffage Énergie Systèmes) covering T&D, substations, and renewable infrastructure. Comparable in energy infrastructure EPC service offering, but operates across broader construction and concession markets.
• Prysmian: Global cable systems manufacturer serving power transmission, distribution, and renewable energy infrastructure. Comparable as a key supplier and complementary participant in energy infrastructure build-out, but operates as a cable manufacturer rather than EPC contractor.
• MasTec: US-based infrastructure construction company serving electric utility, oil & gas, communications, and clean energy markets. Comparable in T&D and renewable infrastructure services but operates across broader end markets with larger overall scale.

Regional players

• Skanska: Swedish construction and project development group with significant Nordic infrastructure operations including power transmission and renewable connections. Comparable in Nordic T&D and renewable infrastructure work, though energy is one segment within a broader construction portfolio.
• Balfour Beatty: UK-headquartered infrastructure group with significant power transmission and distribution operations. Comparable in UK T&D infrastructure services (relevant to Omexom's National Grid work), though diversified across rail, road, and broader construction.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UC9bi4uP61TuGr2x1xNDD9RA
• LinkedInlinkedin.com/company/omexom
• Instagraminstagram.com/omexom
• Xx.com/Omexom_Official

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Subsidiaries4 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Omexom