Clemessy is a leading player in general electrical engineering, as well as systems installation, process automation and complex electrical systems.
Specialised subsidiaries
Through its network of subsidiaries, Dalkia can leverage specific expertise in a variety of areas, including services to hospitals, urban lighting, home services, automation, traffic regulation and outsourced building management.
Clemessy
Citélum
Citélum specialises in urban lighting and urban and suburban traffic regulation systems. Its service capabilities range from project design to turnkey project development, including comprehensive management of the related facilities.
Crystal
Crystal is a leading French contractor in the heating, ventilation and air conditioning engineering and industrial heating systems market. Its services include HVAC and industrial heating systems, building management, plumbing, public pools and sprinkler-based fire protection.
Proxiserve
Proxiserve is a major provider of domestic technical service solutions for the maintenance of heating and water distribution systems, for ensuring the systems' environmental and health quality, and for metering.
Optimège
Optimège serves a broad customer base of commercial building owners. Its scope includes outsourced management of services for building owners and users and comprehensive guaranteed-cost management of property assets such as offices, public reception facilities, shopping centres and business parks.
Dalkia Technologies
Dalkia Technologies designs, develops and operates clean rooms for European high-tech industries.
Edenkia
Edenkia, a joint subsidiary of Dalkia and EDF, builds comprehensive energy solutions combining energy and services for customers in France's deregulated electricity market.
Gespace France
For 15 years now, Gespace France has offered long-term, comprehensive service packages to customers in the public sector under public-private partnership contracts. Specialising in the school and hospital sectors (including logistics centres, residential homes for the elderly, hosting, and technical support centres), Gespace provides its public-sector customers with its own and with Dalkia's expertise in total cost management for all types of buildings.
Sterience
Sterience is the first company in Europe to offer outsourcing of surgical instrument sterilisation and rental for hospitals and clinics.