[Be vigilant] Increase in attempts to impersonate Eiffage and its subsidiaries (use of fake email addresses, fraudulent websites, etc.). More details here.

Passion for industry

About Clemessy

Clemessy, the Eiffage Énergie Systèmes brand, brings together all the skills and expertise dedicated to the world of industry.

From audit to design, integration to completion, commissioning to maintenance, our specialists support all sectors of industry, in terms of infrastructure and utilities as well as processes.

The men and women who carry the Clemessy brand make multi-technical skills and know-how available to you for:

  • the design, integration and completion of technical installations,
  • the engineering, organization and control of the maintenance of your processes,
  • the turnkey design, based on the command of innovative technologies, systems and equipment dedicated to testing, inspections or production.

In France and abroad, the most demanding industries such as nuclear, aeronautics and space, automotive, pharmaceutical and petrochemicals, food processing but also metallurgy and energy place their trust in Clemessy.

Industries of the future

Discover how our experts can assist you in your transformation towards tomorrow’s evolutions. 

Our skills
  • Multi-technical teams

    As a design-build contractor, Eiffage Énergie Systèmes draws on its multi-technical skills to provide tailor-made, suitable solutions from design through to maintenance.

  • Design offices

    The Clemessy design offices are specialized and build solutions tailored to customers’ needs.

  • Maintenance engineering

    Clemessy completes its overall industrial maintenance offer with expertise in maintenance engineering.