
Clemessy supports industrial companies from audit and design through plant integration to commissioning and maintenance.

Clemessy (Marke von Eiffage Énergie Systèmes)
FranceNew on Amplifa
About Clemessy
Clemessy is the industrial brand of Eiffage Énergie Systèmes and pools the competencies and expertise for industrial customers. The service portfolio ranges from audit and design through integration and implementation of technical installations to commissioning and industrial maintenance. In addition, the company designs turnkey systems and installations for testing, inspection and production purposes. The expertise covers electrical engineering, industrial engineering and HVAC as well as digital technologies such as data services, augmented reality, cybersecurity and decarbonisation of buildings and processes. Customers include ArianeGroup, CEA, Véolia, EDF and ESID Brest / Base opérationnelle de l'Île Longue. Clemessy operates in France and internationally and serves demanding industries such as nuclear power, aerospace, automotive, pharmaceuticals, petrochemicals, agribusiness, metallurgy and energy.
- Site
- France
- Processes
- Conceptual design, integration and implementation of technical installations, Engineering, organisation and control of plant maintenance, Turnkey design of systems and installations for testing, inspection or production, Electrical engineering (génie électrique), Industrial engineering (génie industriel), HVAC engineering (génie climatique), Commissioning and maintenance of industrial installations, Audit
- Materials
- Design and Engineering, Commissioning, Data services, augmented reality, cybersecurity
- Industries
- Nuclear power, Aerospace, Automotive, Pharmaceuticals, Petrochemicals, Agribusiness
- 01
Audit
- 02
Design
- 03
Integration and implementation
- 04
Commissioning
- 05
Maintenance
Processes and Services
Design and Engineering
Engineering offices design solutions for technical installations, test systems and process optimisation.
Commissioning
Commissioning and maintenance of industrial installations up to continuous operational support.
Data services, augmented reality, cybersecurity
Digital technologies complement the maintenance and optimisation of industrial processes.
References





Inside the production


Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Conceptual design, integration and implementation of technical installationsEngineering | – | – | – | – | – |
| Engineering, organisation and control of plant maintenanceEngineering | – | – | – | – | – |
| Turnkey design of systems and installations for testing, inspection or productionEngineering | – | – | – | – | – |
| Electrical engineering (génie électrique)Engineering | – | – | – | – | – |
| Industrial engineering (génie industriel)Engineering | – | – | – | – | – |
| HVAC engineering (génie climatique)Engineering | – | – | – | – | – |
| Commissioning and maintenance of industrial installationsAssembly | – | – | – | – | – |
Additional services
Reference customers