CIEC

What CIEC does

CIEC is a French energy services company (ESCo) founded in 1962 and headquartered in Paris, operating as a subsidiary of ENGIE Group. The company specializes in the installation, operation, and maintenance of thermal and climate equipment — including heating, cooling, air conditioning, and renewable energy systems — for social housing operators, public authorities, healthcare facilities, and tertiary sector clients across Ile-de-France. CIEC reports approximately €85M in annual revenue, 315 employees, more than 1,200 clients, and over 4,400 installations under management. Its core differentiator is the proprietary PAVE (Pompe À Vapeur d'Eau) water vapor pump system, licensed from Gaz de France and Chaudières SECCACIER patents, which achieves over 100% efficiency on lower heating value and reduces NOx emissions by more than 50% versus traditional burners.

The business model combines recurring multi-year exploitation and maintenance contracts (including P1/P3 performance guarantee contracts under ISO 50001 certification) with one-time construction and installation projects across biomass, cogeneration, solar thermal, and PAVE systems. Distribution is exclusively direct B2B field sales organized by geographic sector across Ile-de-France, supplemented by 24/7 emergency response and the CIECAction client extranet portal. The company holds RGE (Reconnu Garant de l'Environnement) certifications for solar thermal and biomass installations, enabling access to French energy efficiency subsidy programs.

CIEC's product portfolio spans traditional heating/cooling maintenance, biomass boiler rooms (notably a 10 MW installation at EADS Astrium), nine cogeneration units deployed since 1998, solar thermal systems, and the flagship PAVE technology — with international validation through the 2017 Beijing KEDE project export. Named customers include Paris Habitat, SIEMP, OSICA, FSM, Hôpital Marc Jacquet, Hôpital Sainte Anne, Clinique Dupré, Ville de Yerres, Collèges et Lycées du 92, EADS Astrium, Institut du Monde Arabe, and Jean-Claude Decaux, illustrating deep penetration in regulated and institutional segments of the Greater Paris market.

Name

CIEC

Legal name

CIEC SAS

Website

https://ciec.fr

Company type

Private

Founded year

1962

Operating status

Operating

Headcount range

251–500 employees

Short description

CIEC is a Paris-based ENGIE subsidiary founded in 1962 that installs, operates, and maintains thermal, cooling, and renewable energy systems — including its proprietary PAVE water vapor pump — for social housing, healthcare, and public sector clients across Ile-de-France.

Ownership category

akta.pro rank

Product category

Energy Services

NAICS

Steam and Air-Conditioning Supply (221330), Electric Power Generation (22111)

SIC

Cogeneration Services & Small Power Producers (4991), Heating Equipment, Except Electric & Warm Air Furnaces (3433), Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585)

akta.pro primary industry

Onsite Low-Carbon Heat & CHP (Electrified CHP, Fuel Cells, Renewable CHP) (EUABAJAI)

akta.pro secondary industries

Combined Cycle & Cogeneration (CHP) EPC (EUAEAAAB), Solar EPC & Construction (Utility-Scale, Rooftop, Balance of System) (EUAMABAB)

Keywords

• Energy services
• Thermal equipment maintenance
• HVAC installation services
• Renewable energy solutions
• Facility energy management

Headquarters

HQ city

Paris

HQ country

France

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Maintenance and Operations Contracts: CIEC generates recurring revenue through long-term maintenance and operations contracts (contrats d'exploitation) for heating, ventilation, air conditioning, and refrigeration installations. These contracts cover both traditional energy systems and renewable energy installations, serving social housing, tertiary, healthcare, and public sector clients. Revenue is recurring based on contract duration.
2. Construction and Installation Works: One-time project revenue from the design and installation of new heating systems, biomass boilers, solar thermal installations, cogeneration units, air conditioning, and PAVE systems. Projects range from small residential co-owner boiler rooms to large institutional or industrial installations.
3. Performance Guarantees and Energy Savings: Results-based contracts (garantie de résultats) where CIEC commits to energy consumption targets and savings, generating value from energy efficiency improvements. P3 contracts also include equipment guarantees with planned expenditure spread over contract duration.
4. Energy Efficiency Certificates (CEE): CIEC participates in the French CEE (Certificats d'Economie d'Energie) scheme, generating certificates from energy efficiency operations. This provides additional revenue streams and supports investment in energy-efficient installations.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

CIEC installs, operates, and maintains thermal and climate equipment for buildings across Ile-de-France, including heating (gas, biomass, cogeneration), cooling/air conditioning, solar thermal, and its proprietary PAVE water vapor pump system. The company delivers integrated energy services through long-term maintenance contracts (P1/P3), performance guarantees, and construction/renovation projects for social housing, healthcare, public, and tertiary sector clients. Revenue comes from recurring operations contracts, one-time installation projects, and outcome-based energy performance commitments.

Product overview

CIEC is an energy services company offering a comprehensive portfolio of heating, cooling, and energy efficiency solutions for residential (housing), commercial (tertiary), healthcare, and local authority clients in Île-de-France. The core offering combines traditional maintenance services (heating, electrical, ventilation, air conditioning) with environmental solutions including renewable energy systems. The flagship innovation is the PAVE (Pompe À Vapeur d'Eau) Water Vapor Pump system, delivering ultra-high efficiency (>100% on PCI) with significantly reduced NOx emissions. The CIECAction extranet portal serves as the digital interface for clients to manage services. Key product categories include: PAVE water vapor pumps, cogeneration systems, biomass boiler rooms, solar thermal panels, and traditional heating/cooling maintenance services across various sectors including housing cooperatives, healthcare facilities, and local government buildings.

Differentiator

Problem solved

Functional benefit

Products and services

• PAVE (Pompe À Vapeur d'Eau) Water Vapor Pump Ultra-high-efficiency heating system that elevates flue gas dew point to approximately 70°C through humidification of combustion air, enabling condensation recovery on high-temperature networks. Achieves over 107% efficiency on PCI (lower heating value) and reduces NOx emissions by more than 50% compared to traditional burners. Delivers 3-15% energy savings depending on installation. Developed from patents by Gaz de France and Chaudières SECCACIER and licensed to CIEC.
• CIECAction Client Extranet

Quantifiable outcome

• Energy savings of 3-15% depending on installation
• +4 more outcomes

Named customers12 records

Segments5 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Ten partnerships are on record, tiered core and flagship.

• Riello (Riello S.p.A.)coreTechnology or IntegrationLong-standing burner manufacturer partnership. Riello produces burners specifically designed and modeled for CIEC's PAVE system. PAVE equipped with Riello burners were installed at OSICA (2 MW), Yerres, and other sites. CIEC exhibited on the Riello stand at Interclima 2013 for PAVE promotion.
• ENGIE China + BUGETflagshipStrategic or Co-development PartnerJoint partnership for exporting PAVE technology to China. KEDE project: 2×5.6 MW gas boiler room with PAVE installation at 50km south of Beijing. ENGIE China leads with BUGET as engineering consultant. CIEC sent experts to validate installation. Marked as major international reference.
• LAMTEC (GfbH)coreTechnology or IntegrationSupplier of combustion control systems and sensors for PAVE installations. LAMTEC provides the combustion control cabinet (brain/automaton) for burner control and NOx/O2 monitoring. Partner on COP21 Bourget installation.
• TREND Control SystemscoreTechnology or IntegrationManufacturer of regulation automatons and supervision systems integrated into PAVE installations. TREND provides programmable automation for PAVE control as part of Beijing KEDE project.
• SYS&COMcoreTechnology or IntegrationSolutions integrator for regulation and GTC (Gestion Technique Centralisée) systems. Partner on COP21 PAVE installation at Le Bourget.
• SISTECcoreTechnology or IntegrationNOx and O2 gas analysis specialist providing combustion testing and monitoring equipment for PAVE installations.
• Atlantic GuillotcoreTechnology or IntegrationManufacturer of condensing boilers and heat exchangers supplied as part of PAVE system configurations, notably at COP21 Le Bourget installation.
• BOSCH (Robert Bosch GmbH / Buderus)coreTechnology or IntegrationBosch/Buderus condensing boilers equipped with PAVE technology at OSICA social housing site, demonstrating integration of PAVE with major boiler manufacturers.
• ECOF LAMcoreTechnology or IntegrationBurner manufacturer partnered with CIEC for PAVE installation at Beijing (KEDE project). ECOFLAM provides burners with ventilated cell support designed to prevent condensation issues specific to PAVE operation.
• Chaudières SECCACIERcoreTechnology or IntegrationIndustrial boiler manufacturer that co-developed PAVE patents with Gaz de France. PAVE system developed from SECCACIER boiler patents combined with Gaz de France technology.

Scale indicators5 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Dalkia: Dalkia (EDF subsidiary) is one of France's largest energy services companies, delivering heating networks, cogeneration, and thermal energy management for public and private clients — a direct broad-scale peer to CIEC, with much larger national footprint.
• Eiffage Énergie Systèmes: Eiffage's energy systems division delivers HVAC, electrical, and energy performance contracts across France — comparable to CIEC in scope of thermal/climate services for public and tertiary clients.
• Bouygues Energies & Services: Bouygues Energies & Services delivers HVAC, energy performance, and facility management for public, healthcare, and industrial clients in France — comparable to CIEC in service offering and verticals.
• SPIE France: SPIE provides multi-technical facility services including HVAC, heating, and energy efficiency across France — overlapping with CIEC in installation, maintenance, and performance contracts for buildings.
• ENGIE Solutions (ENGIE Cofely): ENGIE's broader energy services arm and CIEC's corporate sibling, offering heating, cooling, and facility energy management at national and European scale — overlapping with CIEC in ESCo services and serving many of the same client types.
• Vinci Facilities: Vinci Facilities provides integrated facility management including heating, cooling, and energy services for public and private buildings — comparable to CIEC in scope of building-level energy contracts.
• Veolia Énergie France: Veolia's energy division operates district heating networks and thermal energy services for municipalities and industry in France — overlapping with CIEC's public-sector and biomass offerings at a larger scale.

Direct peers

• Idex: Idex is a French ESCo specializing in heating networks, cogeneration, biomass, and energy performance contracts for housing, healthcare, and tertiary buildings — directly comparable to CIEC in service mix and target verticals.

Emerging players

• Razel-Bec (biomass & energy arm): Razel-Bec, part of Fayat Group, builds and operates biomass heating networks and energy infrastructure projects in France — a niche player with comparable biomass/CHP delivery capabilities.
• Herige Group / Edycem (energy services arm): Edycem delivers HVAC and energy services including biomass solutions for the west of France — a regional player with overlapping capabilities in biomass heating and ESCo offerings.

Market position

Strengths5 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• Xx.com/CIEC_France

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 CIEC