isocrate

What isocrate does

Isocrate is a Nantes-based Bureau d'Études Techniques (building engineering consultancy) founded in 1978 and organized as a SCOP (workers' cooperative), with 23 collaborators operating from a single headquarters in Nantes. The company delivers technical engineering studies across five complementary poles: Génie Climatique (HVAC, heating, ventilation, renewable energies, plumbing), Génie Électrique (strong and weak current installations, lighting), Ingénierie Environnementale (eco-responsible construction, BREEAM, passive energy buildings), Protection Incendie et SSI (fire safety coordination, SSI categories A-E), and Diagnostic Technique (regulatory thermal studies, energy performance, lifecycle assessments). Its clients are public and private project owners (Maîtres d'Ouvrages Publics et Privés) across Western and Northern France, with named engagements spanning municipalities, social housing developers, healthcare facilities, and educational institutions.

The business model is project-based professional services, with fees tied to the scope and complexity of each engineering engagement rather than published unit pricing. Projects run from conception through delivery in close collaboration with architects and project owners, and procurement is largely through public tenders and direct partnerships. The company holds over 30 OPQIBI qualifications and RGE certifications, which act as gatekeepers for tender eligibility in regulated French construction and energy work. Geographic reach spans Pays de la Loire, Bretagne, Nouvelle-Aquitaine, Île-de-France, and Normandie. Marketing is light-touch: a corporate website, LinkedIn, Facebook, and participation in industry events such as ARCHITECT@WORK.

Governance is structured around the cooperative model: in 2020, Sylvie Moalic transferred the directorship to two elected co-directors (Christophe Simon and Christophe Mulvet), and three new sociétaires joined in 2022. The firm is currently absorbing several long-tenured retirements (Pierrette Grandin, Didier Sécher) while onboarding new chefs de projet, indicating an active but measured succession cycle rather than rapid scale-up.

Name

isocrate

Legal name

ISOCRATE - Bureau d'Études Techniques

Website

https://isocrate.com

Company type

Private

Founded year

1978

Operating status

Operating

Headcount range

11–50 employees

Short description

Isocrate is a Nantes-based French building engineering consultancy (SCOP cooperative, 23 staff, founded 1978) delivering HVAC, electrical, environmental, fire-safety, and diagnostic technical studies for public and private project owners across Western and Northern France.

Ownership category

akta.pro rank

Headquarters

HQ city

Nantes

HQ country

France

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Engineering Studies and Technical Consulting: Project-based professional services providing technical engineering studies for building construction and renovation projects. Services cover conception to realization phases for HVAC, electrical, environmental, fire protection, and technical diagnostics.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Isocrate is a Bureau d'Études Techniques (technical engineering office) providing technical building engineering studies across five poles: Génie Climatique (HVAC, heating, ventilation, plumbing, renewable energies, smoke extraction), Génie Électrique (strong and weak current installations, power optimization, lighting studies), Ingénierie Environnementale (eco-responsible construction, environmental certifications such as BREEAM), Protection Incendie et SSI (fire protection and security systems coordination), and Diagnostic Technique (regulatory thermal studies, energy diagnostics, lifecycle assessments). The firm advises and accompanies project owners from conception through realization across new construction and renovation.

Product overview

Isocrate is a Bureau d'Études Techniques (technical engineering office) offering a unified suite of engineering services organized into five complementary poles: Génie Climatique (HVAC, heating, ventilation, renewable energies), Génie Électrique (electrical installations, strong and weak currents), Ingénierie Environnementale (eco-responsible construction, environmental certifications), Protection Incendie et SSI (fire safety and security systems), and Diagnostic Technique (regulatory studies, energy diagnostics). The company provides master contracting and technical studies from design through delivery, serving sectors including residential, tertiary, sports, culture, education, healthcare, industry/parking, childhood, and restaurant/catering. Isocrate operates as a SCOP (cooperative) and has been recognized for 46 years, with a team of 23 collaborators.

Differentiator

Problem solved

Functional benefit

Products and services

• Génie Climatique Engineering services covering thermal studies, heating, ventilation, air conditioning (HVAC), plumbing, renewable energies, and smoke extraction systems for buildings. Provided to public and private project owners across conception to realization phases.
• Génie Électrique Electrical engineering covering strong current (courants forts) and weak current (courants faibles) installations, power optimization, lighting studies, and technical coordination for all building types.
• Ingénierie Environnementale Environmental engineering specializing in eco-responsible construction, passive energy buildings, sustainable design, and environmental certifications such as BREEAM.
• Protection Incendie et SSI Fire protection and Security Intrusion (SSI) systems design, including fire safety coordination, smoke control, and SSI category A through E coordination for buildings.
• Diagnostic Technique Technical diagnosis services for buildings, including regulatory thermal studies, energy performance assessments, and ACV (Lifecycle Assessment) studies.

Quantifiable outcome

• Projects in multiple sectors: teaching, industry/parking, culture, childhood, food service, healthcare, sports, and residential

Named customers5 records

Segments10 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

Four partnerships are on record, tiered core and minor.

• Chambre des Ingenieurs Conseils de FrancecoreStrategic or Co-development PartnerIsocrate is a member of the Chambre des Ingenieurs Conseils de France, an organization representing and supporting engineering consulting firms in France.
• ORACEminorStrategic or Co-development PartnerORACE is a Regional Innovation Platform focused on energy management, bringing together economy, research, and training. Isocrate participates as a member benefiting from technology innovation sharing.
• RC Nantais - Les Foulees des Bords de LoireminorOthersSince 2015, Isocrate has been a partner of the Foulees des Bords de Loire running event organized by RC Nantais. Partnership supporting local community sports event.
• 6H de ValletminorOthersIsocrate sponsors the 6H de Vallet event organized by Vallet Hors Stade, supporting local sports associations and employee participation.

Scale indicators2 records

Recent moves7 records

Expansion highlights5 records

Direct peers

• Altereo: French environmental and urban engineering consultancy offering comparable services in environment, water, energy, and infrastructure. Similar mid-sized BET profile with multi-disciplinary service offering overlapping Isocrate's Ingénierie Environnementale and Diagnostic Technique poles.
• Algoé: French engineering and management consultancy with practices covering building, energy, environment, and project management. Comparable mid-sized BET profile with overlapping service lines and similar public-sector client base.
• SCE: Nantes-headquartered French engineering consultancy with strong overlap in building infrastructure, environment, and energy services. Geographic co-location in Western France and similar service portfolio make SCE a close direct competitor for the same client base.
• Verdi Ingénierie: French BET firm providing multi-disciplinary engineering studies for building projects (HVAC, electrical, environment, structure) with comparable service scope and similar small-to-mid firm profile. Directly comparable offering to Isocrate's five-pole service stack.
• Burgeap: French environmental engineering consultancy (subsidiary of Ginger Groupe) with strong overlap on environmental engineering, water, energy performance, and pollution studies. Comparable niche expertise for Isocrate's environmental engineering pole.

Broad incumbents

• Setec: French engineering group with relevant building, infrastructure, and environmental practices. Broader portfolio than Isocrate but with overlapping competencies in technical building studies for public and private clients.
• Egis: Large international French engineering group with extensive building, infrastructure, energy, and environment practices. Competes with Isocrate for larger public and private building mandates where scale and full-service capabilities are required.
• Ginger Groupe: Major French engineering group with practices across environment, infrastructure, building engineering, and geotechnical services. Larger, broader portfolio competitor to Isocrate for mid-sized public mandates in Western France.
• Artelia: Large French engineering consultancy covering building, water, energy, environment, and infrastructure. Comparable in service breadth to Isocrate's five-pole offering, but at significantly greater scale and geographic reach.

Others

• SOCOTEC: French construction regulatory compliance, testing, and certification firm. Adjacent player operating in the same construction value chain, with overlap on regulatory studies, technical diagnostics, and energy performance assessment work that Isocrate also delivers.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/isocrate44
• LinkedInlinkedin.com/company/isocrate-bureau-d-etudes-techniques

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 records

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 isocrate