What Manergy does

Manergy is a French independent engineering and consulting firm specializing in energy and environmental transition. Founded approximately 40 years ago (c. 1985) and headquartered in Créteil, the company operates a network of 26 regional agencies across metropolitan France and serves four core customer segments: social housing providers, local authorities and territories, industrial companies, and engineering/infrastructure clients, with smaller exposure to private residential and private tertiary real estate. Its offering is structured around four business poles — Patrimoines (buildings and housing), Territoires (territories and collectivities), Industries (industrial decarbonation) and Engineering (energy infrastructure) — covering the full project lifecycle from strategic consulting (Conseil et études) through project management assistance (AMO), design engineering (Maîtrise d'œuvre), and operational monitoring (Suivi et Ingénierie d'exploitation).

The company's technical stack is centered on domain expertise rather than proprietary software. Service lines cover geothermal, photovoltaic, biomass, green hydrogen, heat networks, industrial utilities, climate engineering and industrial cold systems. The proprietary MANERGISME platform provides centralized energy efficiency monitoring and optimization across the client base. Specialized methodology offerings include CEE (Certificats d'Économies d'Énergie) valorization, waste heat recovery studies following ADEME methodology, energy master planning, ISO 50001 certification support, and district heating feasibility studies. In September 2024, Manergy acquired SOG SOLAR to add dedicated solar PV engineering capabilities in Vendée, Montpellier and Dijon.

The business model is project-based professional services — fees from technical studies, AMO contracts, design engineering, and operational monitoring — combined with a managed-services revenue stream through a third-party-financing offering (Tiers Financement) that structures equity, leasing and heat-sale arrangements to enable clients to execute decarbonation projects with 100% external financing. Pricing is quote-based per engagement; there are no public tiers. GTM is enterprise field sales supported by content marketing (a blog/expert resources hub, webinars, white papers, LinkedIn and YouTube), and the customer base spans large industrial groups (LVMH, Sanofi, Safran, Arcelor Mittal, L'Oréal, Novartis, Thales Alenia Space, Orange, Decathlon, Schott, Corteva) and public-sector clients (Ville de Paris, Région Île-de-France, Grand Lyon, Toulouse Métropole, CHU de Brest). The company holds the LUCIE 26000 sustainability certification (2024) and operates as a private SAS with €131,400 of share capital, with no disclosed external investors or parent company.

Name

Manergy

Legal name

MANERGY

Website

https://manergy.fr

Company type

Private

Founded year

1985

Operating status

Operating

Headcount range

101–250 employees

Short description

Manergy is a France-based independent engineering consultancy, founded c. 1985, that delivers energy transition and decarbonation services across four business poles (buildings, territories, industries, infrastructure) to social housing providers, local authorities and industrial clients through 26 regional agencies.

Ownership category

akta.pro rank

Product category

Energy Engineering and Consulting Services

NAICS

Specialty Trade Contractors (238)

SIC

Services-Engineering Services (8711)

akta.pro primary industry

Carbon Auctions & Tender Management (Buyer/Seller Programs, RFPs) (EUABADAH)

akta.pro secondary industries

Waste Heat Recovery & Heat Integration (HRSG/ORC, Pinch Analysis, Heat Exchangers) (EUABAJAF), CO₂ Utilization in Industrial Processes (urea/fertilizers, enhanced oil recovery where applicable, process integration) (EUABAIAI), Supplier Tendering / RFP Management & Contract Negotiation Services (EUAGAEAE)

Keywords

• Energy transition consulting
• Environmental engineering services
• Industrial decarbonation consulting
• Energy efficiency auditing
• Renewable energy engineering

Headquarters

HQ city

Créteil

HQ country

France

HQ region

Europe

Offices11 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Professional Engineering Services: Project-based engineering and consulting fees for energy transition services including technical studies, project management assistance (AMO), design engineering (Maitrise d'œuvre), and operational monitoring. Revenue generated through direct client contracts with public authorities, social housing providers, industrial companies, and private entities.
2. Third-Party Financing (Tiers Financement): Financial engineering services where MANERGY arranges financing for client energy transition projects through third-party investment structures, equity investments, equipment leasing, or heat (or cold) sale contracts. This enables clients to implement decarbonation projects with 100% third-party financing.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels8 records

Core offering

Manergy is an independent French engineering and consulting firm delivering energy transition and environmental services for buildings, territories, industrial companies, and energy infrastructure. Its offerings span strategic consulting, project management assistance (AMO), design engineering (Maîtrise d'œuvre), and operational follow-up engineering across decarbonation, energy efficiency, renewable energy integration, heat recovery, and regulatory compliance. The firm also arranges third-party financing (Tiers Financement) for client decarbonation projects via equity investments, equipment leasing, and heat/cold sale contracts.

Product overview

MANERGY is a French engineering and consulting firm specializing in energy and environmental transition, founded 40 years ago. The company operates through four main business poles (Patrimoines, Territoires, Industries, Engineering) and offers integrated services spanning consulting, project management assistance (AMO), engineering and design (Maîtrise d'œuvre), and operational follow-up. Key service offerings include CEE valorization, heat recovery studies, energy master planning, and district heating network services. The company also acquired SOG SOLAR to expand its solar photovoltaic capabilities. MANERGY's expertise spans geothermal, photovoltaic, smart city, biomass, district heating networks, and industrial utilities optimization. The company operates through a network of regional agencies across France and primarily serves social housing providers, local authorities, industrial companies, and property managers.

Differentiator

Problem solved

Functional benefit

Products and services

• Conseil et études (Strategic Consulting and Energy Studies) Strategic consulting and energy studies to help clients develop their energy and environmental strategy, including energy audits, decarbonation roadmaps, and feasibility assessments.
• AMO et assistance à contractualisation (Project Management Assistance) Project management assistance services to help clients define, conduct, and oversee rehabilitation or construction projects through contractual support.
• Maîtrise d'œuvre et ingénierie (Design Engineering) Full engineering and design services managing all project phases from conception through execution, control, and closure.
• Suivi et Ingénierie d'exploitation (Operational Engineering Monitoring) Independent operational monitoring and engineering services to track and optimize facility performance throughout the operational lifecycle.
• CEE Valorization Services Assistance with Energy Efficiency Certificates (Certificats d'Économies d'Énergie) valorization, including project identification, calculation, administrative support, and partnership contracts for industrial clients.
• Heat Recovery Study Technical feasibility studies for waste heat recovery from industrial processes, following ADEME methodology, to quantify recoverable energy and recommend equipment solutions.
• Energy Master Plan (Schéma Directeur Énergie) Strategic energy planning service helping industrial sites identify energy savings, prioritize investments, and structure decarbonation roadmaps over 5-10 years.
• District Heating Network Services Comprehensive services for district heating and cooling networks including feasibility studies, master planning, and project management following ADEME guidelines.
• Third-Party Financing (Tiers Financement) Financial engineering services for decarbonation projects including equity investment, equipment leasing, and heat sale contracts with 100% third-party financing options.
• SOG SOLAR (Solar Photovoltaic Engineering Services) Solar energy engineering and consulting services including photovoltaic project development, feasibility studies, construction supervision, and operational monitoring for solar installations.

Quantifiable outcome

• 4,700+ missions completed in 2023
• +7 more outcomes

Named customers22 records

Segments6 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

Five partnerships are on record, tiered core, major and minor.

• SOG SOLARcoreStrategic or Co-development Partner · 16 September 2024MANERGY acquired SOG SOLAR in September 2024, establishing its solar photovoltaic engineering subsidiary. SOG SOLAR operates with offices in Mouilleron Le Captif, Montpellier, and Dijon, providing photovoltaic project engineering and consulting services to clients including Decathlon and Vectura Immobilier.
• ResahmajorStrategic or Co-development PartnerFramework agreement (accord-cadre) partnership with RESAH (health sector purchasing group) for AMO services and project monitoring (Suivi-MOE) to support healthcare facilities' decarbonation projects such as CHI de Brignoles Le Luc.
• SigeifmajorStrategic or Co-development PartnerFramework agreement partnership with SIGEIF (energy syndicate of Île-de-France) for AMO services related to energy efficiency in buildings, heating networks, and renewable energy.
• ADEMEcoreStrategic or Co-development PartnerPartnership with ADEME (Agence de l'Environnement et de la Maîtrise de l'Énergie) for energy transition projects, heat fund subsidies, and national energy efficiency programs including PACTE Industrie and CEE schemes.
• Via SévaminorStrategic or Co-development PartnerPartnership with Via Séva on the national heat network master plan (Schéma directeur national réseaux de chaleur), conducted in partnership with ADEME and FEDENE.

Scale indicators4 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• WSP France: Global engineering consultancy with significant French presence across building, energy, and environment practices — larger-scale competitor pursuing the same client base of public authorities, social housing, and industrials.
• Bureau Veritas: Global testing, inspection and certification company with an expanding energy transition and decarbonation advisory practice; competes for industrial client mandates and ISO 50001 certification support.
• Tractebel (Engie): Belgian-French engineering consultancy within the Engie group; broader scope than MANERGY but overlapping energy transition, district heating, and industrial decarbonation practices across France.
• Ramboll France: International engineering consultancy with growing French energy transition practice covering district heating, building energy, and industrial decarbonation — competes for mid- and large-scale public-sector mandates.

Emerging players

• GreenFlex: French energy and environmental consulting firm acquired by TotalEnergies; provides energy efficiency and decarbonation services to industrial and commercial clients — direct overlap with MANERGY's Industries pole.
• Carbone 4: French independent carbon strategy and advisory consultancy; narrower scope focused on climate strategy and CSRD reporting but competes for the same carbon advisory mandates from enterprises and territories.

Direct peers

• setec: Independent French multi-disciplinary engineering firm with established energy and environment practices — comparable independent positioning and similar target clientele among developers, industrials, and public authorities.
• Egis: French engineering group with strong energy, building, and environment practices; competes head-to-head with MANERGY for district heating, geothermal, and public-sector energy transition mandates.
• Assystem: French engineering group focused on industrial and energy transition, including nuclear, hydrogen and decarbonation — overlapping with MANERGY's Industries and Engineering business poles.
• Artelia: Major French independent engineering consultancy providing energy, environment, and building engineering services — the most direct competitor to MANERGY across industrial decarbonation, building energy efficiency, and district heating projects in France.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UCuz2KrM20D4zVMKB6NgtQRQ
• LinkedInlinkedin.com/company/groupemanergy

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 records

Subsidiaries1 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 Manergy