Exoceth
Exoceth is a French engineering consultancy providing energy audits, feasibility studies, and project management services for renewable energy and decarbonization projects across western France, serving public, industrial, agricultural, and tertiary clients as part of Best Energies Group.
- Company typePrivate
- Founded2003
- HeadquartersGuer, France
- Headcount11–50
- GTM typeB2B
- OfferingServices
What Exoceth does
Exoceth is a French engineering consultancy (bureau d'études) founded in 2003 and headquartered in Guer, Brittany. The firm provides energy performance engineering and renewable-energy project services across four integrated practice areas — energy audits, feasibility studies, project management (maîtrise d'œuvre), and project owner assistance (AMO) — applied to four technical domains: renewable energy, decarbonization, building technologies, and building energy performance. Since 2012, Exoceth has operated as part of Best Energies Group, a holding structure for complementary energy-transition service firms.
The company serves a diversified client base spanning the public sector (municipalities and inter-municipal cooperation bodies), industrial operators, agricultural enterprises, and the tertiary building sector. Named clients include Saipol, Limagrain, Dalkia, Lannion-Trégor Communauté, and Plérin. The firm maintains offices in Guer, Guipavas, and Saint-Herblain, supporting project delivery primarily across the Grand Ouest region of France with extensions into Pays de la Loire and Nouvelle-Aquitaine.
Exoceth's revenue model is professional services–based, monetizing fixed-price and contract-based engineering engagements — diagnostics, technical studies, design, construction supervision — tied to public and private energy-transition mandates. The firm holds OPQIBI and RGE certifications across nine technical areas, which function as gating credentials for subsidized French energy-efficiency and renewable-energy public works. The firm employs between 11 and 50 staff with declared share capital of €300,292, and operates with BIM 3D CAD tooling in design workflows rather than proprietary technology platforms. The business is credentialed-headcount-driven rather than software-driven.
Exoceth firmographics
Firmographics- Name
- Exoceth
- Legal name
- EXOCETH – Société par actions simplifiée
- Website
- https://exoceth.fr
- Company type
- Private
- Founded year
- 2003
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Exoceth is a French engineering consultancy providing energy audits, feasibility studies, and project management services for renewable energy and decarbonization projects across western France, serving public, industrial, agricultural, and tertiary clients as part of Best Energies Group.
- Ownership category
- akta.pro rank
Exoceth industry classification
Industry- Product category
- Energy Engineering Consultancy
- NAICS
- Engineering Services (541330)
- SIC
- Services-Engineering, Accounting, Research, Management (8700)
- akta.pro primary industry
- Construction Management & General Contracting (EPCM, Scheduling, QA/QC, HSE) (EUAMAFAJ)
- akta.pro secondary industries
- Electrical Balance-of-Plant EPC (MV Collection, Cabling, Earthing, Lighting) (EUAEADAB), Solar Balance-of-Plant EPC (Piles/Foundations, Trenching, Combiner Networks) (EUAEADAJ)
Keywords
Where Exoceth is headquartered
LocationHeadquarters
- HQ city
- Guer
- HQ country
- France
- HQ region
- Europe
Offices3 records
Markets served
Exoceth business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure, Others
Revenue model
- Engineering Consultancy Services: Professional engineering services including energy audits, feasibility studies, project management (maîtrise d'œuvre), and project owner assistance (AMO). Revenue generated through consulting fees for design, implementation support, and technical advisory services to private and public sector clients.
Go-to-market motion1 record
Distribution channels1 record
Marketing channels3 records
Exoceth product offering
Product offeringCore offering
Exoceth is an engineering consultancy (bureau d'études) providing integrated design, advisory, and implementation services for energy transition and renewable energy projects. Its core offering comprises four service lines—energy audits, feasibility studies, project management (maîtrise d'œuvre), and project owner assistance (AMO)—applied across renewable energy (biomass, solar, geothermal), decarbonization (district heating, waste heat recovery), industrial technologies, and building thermal performance.
Product overview
Exoceth is an engineering firm (bureau d'études) providing integrated services for energy transition and renewable energy projects. The company offers four core service lines: Energy Audit (state-of-the-art assessment), Feasibility Study (technical-economic evaluation), Project Management/Maîtrise d'œuvre (design and construction supervision), and Project Owner Assistance (personalized support). These services are applied across four main domains of activity: Renewable Energy (Biomass, Solar, Geothermal), Decarbonization (District Heating Networks, Waste Heat Recovery, Electrification), Technologies (Industrial Utilities, HVAC Fluids/Electrical Systems, Systems Engineering), and Buildings (Building Thermal Performance, BIM, Centralized Technical Management). The portfolio covers projects from agricultural to tertiary and industrial sectors, with particular expertise in biomass boiler rooms, district heating networks, and energy efficiency optimization.
Differentiator
Problem solved
Functional benefit
Products and services
- Energy Audit (Audit énergétique) Energy diagnosis service applied to buildings, equipment, or industrial processes to assess energy savings potential and reduce environmental footprint. Includes initial assessment, energy balance analysis, recommendations, and technical-economic analysis for housing, tertiary, and industrial clients.
- Feasibility Study (Étude de faisabilité) Technical and economic evaluation service that validates technical feasibility and profitability for renewable energy implementation, energy optimization solutions, and energy supply assessments across biomass, solar, geothermal, heat pumps, waste heat, and district heating use cases.
- Project Management (Maîtrise d'œuvre) Design and supervision service covering project definition, specification preparation, contractor bid analysis, execution studies, site supervision, and commissioning for HVAC fluids, electricity (CFO-CFA), regulation/control-command, and process installations.
- Project Owner Assistance (Assistance à Maîtrise d'Ouvrage — AMO) Personalized support service for project owners covering technical, administrative, financial, and legal aspects, including project setup, global performance contracting (régie, SPIC, DSP, MGP), operation and energy supply contracts, HQE approaches, and performance validation.
- Biomass Energy Systems Engineering Design and implementation of biomass or wood-fired boiler rooms including fuel storage, handling, combustion in hearth-boiler units, energy production, and treatment of effluents (ashes and gas emissions), applied to industrial, agricultural, municipal, and tertiary clients.
- Solar Energy Systems Engineering Engineering of solar thermal panels for heat production and photovoltaic solar panels for electricity generation, including optimization studies addressing seasonal and daily variability.
- Geothermal Energy Systems Engineering Harnessing of natural heat from subsoil using various capture techniques for heating systems and/or industrial processes, supported by expert geological analysis.
- District Heating Network Engineering Engineering of district heating networks distributing thermal energy from centralized production points to consumers as a vector for renewable and/or recovered energy sources, with technical, administrative, economic, and legal support.
- Waste Heat Recovery Engineering Engineering of waste heat recovery from industrial processes or energy production assets (engines, chilled water units, compressors, greywater) to substitute fossil fuels or serve as a competitive energy source.
- Industrial Utilities Engineering Design and optimization of energy fluids and services necessary for industrial processes, including electricity, steam, compressed air, hot water, chilled water, and other essential fluids.
- HVAC Fluids and Electrical Systems Engineering Design of HVAC (heating, ventilation, air conditioning) systems and electrical systems (high voltage power distribution and lighting; low voltage control/command, IT, fire safety) for residential, tertiary, and industrial buildings.
- Centralized Technical Management (GTC) / Building Management Systems Building Management Systems with supervision tools enabling easy operation of installations, incorporating automation technologies, supervision software, and modern communication protocols.
- Building Thermal Performance Engineering Optimization of hygrothermal comfort in new constructions and renovated buildings through analysis, simulations, and BIM/3D CAD modeling for energy efficiency in the building sector.
- BIM (Building Information Modeling) and 3D CAD Services Digital modeling using BIM and 3D CAD tools to anticipate execution and operational constraints, enabling equipment integration and graphical representation for new projects (initial sketch) and existing buildings (3D scanning).
Quantifiable outcome
- Energy consumption reduction of 38% achieved in CDG29 tertiary building audit project
- +3 more outcomes
Companies that use Exoceth
Customer profileNamed customers12 records
Segments4 records
Ideal customer profiles3 records
Exoceth technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
Exoceth partnerships and signals
Strategic signalPartnerships
13 partnerships are on record, tiered core and minor.
- Best Energies GroupcoreExoceth has been part of the Best Energies Group since 2012, providing access to broader resources and expertise in the energy sector. The group supports Exoceth's operations and provides strategic direction for energy transition projects.
- OPQIBIcoreOPQIBI is the certification body for engineering service providers. Exoceth holds OPQIBI certification guaranteeing quality of services.
- FiboisminorFibois is a partner organization related to wood/forestry sector, supporting biomass energy projects.
- AmorceminorAmorce is a partner organization in the energy and environment sector.
- B2E BretagneminorRegional partner organization in Brittany focused on energy efficiency.
- AILEminorPartner organization in the energy sector.
- CIBEminorPartner organization related to energy and biomass sector.
- Gumiaux & GombeaucoreArchitecture firm frequently collaborating with Exoceth on construction projects including multi-sports halls, municipal technical centers, and boiler room projects.
- Ouest StructuresminorStructural engineering office collaborating on building construction projects.
- AlhyangeminorAcoustic engineering office collaborating on building projects for comprehensive engineering services.
- Eco Energie ConseilminorEnergy consulting partner collaborating on efficiency projects.
- Armorique EtudesminorEngineering studies partner collaborating on regional projects.
- Eco 3minorEngineering consultancy partner for energy projects.
Scale indicators3 records
Recent moves6 records
Expansion highlights4 records
Exoceth competitors and assessment
Company assessmentEmerging players
- Burgeap: Environmental and energy engineering consultancy (subsidiary of Egis) providing audits, feasibility studies, and project management for renewable energy and decarbonization projects. Comparable technical scope to Exoceth, with broader group backing.
Broad incumbents
- Egis: Large French engineering group with established energy, environment, and building infrastructure capabilities including the Burgeap environmental engineering subsidiary. Comparable service overlap with Exoceth but at much larger scale.
- Artelia: Major French engineering group with strong energy, environment, and buildings practices serving public and industrial clients across France. Broader portfolio than Exoceth but directly competes for similar renewable energy and infrastructure mandates.
- Setec: French multi-disciplinary engineering group covering energy, infrastructure, and environmental projects. Overlaps with Exoceth in energy engineering and project management for public and industrial clients.
- Tractebel (Engie): Large international engineering consultancy (part of Engie) with deep energy, renewables, and district heating capabilities. Overlaps with Exoceth across multiple service lines but operates at vastly greater scale and geographic breadth.
Direct peers
- Energies Demain: French energy consultancy focused on renewable energy, energy efficiency, and territorial energy planning for public and private clients. Comparable to Exoceth in the renewable energy engineering and district heating domains.
- H3C Energies: French engineering firm specialized in biomass, geothermal, and renewable heat projects, including district heating networks and boiler room engineering. Directly comparable in technical domain to Exoceth's renewable energy practice.
- TECSOL: French independent solar engineering consultancy providing feasibility studies, technical audits, and project oversight for thermal and photovoltaic installations. Comparable niche specialisation to Exoceth's solar thermal work.
- ALTEREA: French engineering consultancy specializing in energy transition and sustainable building performance, serving similar public, industrial, and tertiary clients across France. Closely comparable scope to Exoceth's audit, feasibility, and maîtrise d'œuvre offerings.
- Inddigo: French sustainable development and renewable energy engineering consultancy providing audits, feasibility studies, and project management for energy and biomass projects. Directly comparable in service mix and customer profile to Exoceth.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat3 records
Key risks5 records
Key highlights6 records
Customer concentration
Exoceth social profiles
Digital presenceExoceth compliance and trust
Trust signalCompliance9 records
Exoceth financial estimates
Financial estimateRevenue estimate
Valuation estimate
Exoceth leadership team
Management profileNumber of profiles
Profiles7 records
Exoceth funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Exoceth M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Exoceth
What does Exoceth do?
Exoceth is an engineering consultancy (bureau d'études) providing integrated design, advisory, and implementation services for energy transition and renewable energy projects. Its core offering comprises four service lines—energy audits, feasibility studies, project management (maîtrise d'œuvre), and project owner assistance (AMO)—applied across renewable energy (biomass, solar, geothermal), decarbonization (district heating, waste heat recovery), industrial technologies, and building thermal performance.
Is Exoceth a public or private company?
Exoceth is a private company. It is classified as corporate owned and is currently operating.
When was Exoceth founded?
Exoceth was founded in 2003. It employs 11 to 50 people.
Where is Exoceth based?
Exoceth is headquartered in Guer, France, in the Europe region.
How does Exoceth make money?
One revenue line is on record: engineering Consultancy Services.
Who are Exoceth's main competitors?
Burgeap is listed as an emerging player. Broad incumbents are Egis, Artelia, Setec and Tractebel (Engie). Direct peers are Energies Demain, H3C Energies, TECSOL, ALTEREA and Inddigo.
Does Exoceth have an API?
No public API is recorded for Exoceth.
What industry is Exoceth in?
Exoceth's product category is Energy Engineering Consultancy. Its primary akta.pro industry code is EUAMAFAJ, Construction Management & General Contracting (EPCM, Scheduling, QA/QC, HSE), with a secondary code of EUAEADAB, Electrical Balance-of-Plant EPC (MV Collection, Cabling, Earthing, Lighting). Its NAICS code is 541330 and its SIC code is 8700.