Omexom
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.
- Company typePrivate
- Founded2000
- HeadquartersPuteaux, France
- Headcount501–1,000
- GTM typeB2B
- OfferingServices
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.
Omexom firmographics
Firmographics- 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
Omexom industry classification
Industry- 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
Where Omexom is headquartered
LocationHeadquarters
- HQ city
- Puteaux
- HQ country
- France
- HQ region
- Europe
Offices4 records
Markets served
Omexom business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Supply Chain, Infrastructure, Technology or R&D, Marketing or Sales
Revenue model
- 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.
- 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.
- 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
Omexom product offering
Product offeringCore 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.
Companies that use Omexom
Customer profileNamed customers11 records
Segments3 records
Ideal customer profiles3 records
Omexom technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature2 records
Omexom partnerships and signals
Strategic signalPartnerships
19 partnerships are on record, tiered core, flagship and minor.
- Seven BelcoreOmexom 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 LimitedcoreOmexom 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 GridflagshipOmexom 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.
- CentricacoreOmexom 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.
- NIOminorOmexom delivered a battery replacement station for electric vehicles in Norway in collaboration with NIO, demonstrating capabilities in EV charging and battery swap infrastructure.
- Eneco RenewablescoreOmexom 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 PowercoreOmexom 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 EnergycoreOmexom 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.
- NeoencoreOmexom provides engineering, procurement, and construction services for Neoen's solar projects, delivering grid connection and infrastructure solutions for utility-scale solar installations.
- FortumcoreOmexom delivers grid connection services for Fortum in Finland, providing the engineering and construction expertise needed to connect energy assets to the Finnish transmission network.
- FingridcoreOmexom provides services for Finnish Transmission System Operator Fingrid, supporting grid infrastructure projects and transmission network development in Finland.
- E.ONcoreOmexom 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 SolutionsminorOmexom partnered with Daimler Buses Solutions on electric bus charging infrastructure, providing engineering solutions for EV bus charging deployment.
- Circle KminorOmexom 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 ElnätcoreOmexom provides substation construction and grid connection services for Umeå Energi Elnät in Sweden, supporting local distribution network development in the Umeå region.
- HSM OffshorecoreOmexom partners with HSM Offshore for the delivery of offshore substations in the Netherlands, combining expertise for complex offshore wind electrical infrastructure projects.
- Norsk e-FuelminorOmexom provides project delivery services for Norsk e-Fuel's synthetic fuel production facility in Finland, including energy infrastructure and grid connection requirements.
- ENERGISA GroupcoreOmexom 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 ConsortiumminorOmexom 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
Omexom competitors and assessment
Company assessmentDirect 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
Omexom social profiles
Digital presenceOmexom financial estimates
Financial estimateRevenue estimate
Valuation estimate
Omexom leadership team
Management profileNumber of profiles
Profiles4 records
Omexom subsidiaries and ownership
Company hierarchySubsidiaries4 records
Omexom funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Omexom M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Omexom
What does Omexom do?
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.
Is Omexom a public or private company?
Omexom is a private company. It is classified as corporate owned and is currently operating.
When was Omexom founded?
Omexom was founded in 2000. It employs 501 to 1,000 people.
Where is Omexom based?
Omexom is headquartered in Puteaux, France, in the Europe region.
How does Omexom make money?
Three revenue lines are on record. Engineering, Procurement & Construction (EPC) is the primary driver. The others are operations & Maintenance (O&M) and grid Connection Services.
Who are Omexom's main competitors?
Direct peers on record are MYR Group, Quanta Services, SPIE, Eltel Group and Burns & McDonnell. Broad incumbents are Eiffage, Prysmian and MasTec. Regional players are Skanska and Balfour Beatty.
Does Omexom have an API?
No public API is recorded for Omexom.
What industry is Omexom in?
Omexom's product category is Energy Infrastructure Services. Its primary akta.pro industry code is EUAEACAC, Distribution Substations & Switching Stations (MV) EPC, with a secondary code of EUAEAAAM, Power Plant Electrical Systems EPC (Switchyard, Transformers, Protection & Controls). Its NAICS code is 221122.