OCCINERGY

What OCCINERGY does

OCCINERGY is a privately held French technical engineering consultancy (bureau d'études techniques) founded in 2008 by David HAGGAI and headquartered in Toulouse, in the Occitanie region of France. The firm delivers engineering studies in three core disciplines — energy, environmental performance, and fluid systems — for new construction and renovation projects spanning residential, tertiary, educational, and industrial buildings. Its service portfolio comprises nine integrated offerings: environmental consulting, thermal/energy engineering (including E2C1, E3C1, E3C2, BEPOS, BEPAS certifications), HVAC, plumbing and renewable energy integration, smoke extraction systems, electrical systems (high and low voltage), building management systems, home automation, and BIM (Building Information Modeling) digital modeling.

The firm operates as a B2B professional services business, with revenue generated on a project basis through direct client engagement and response to tenders. Its core technology stack consists of engineering analysis software for thermal/energy simulation, HVAC and plumbing design, electrical load calculations, and BIM modeling — without disclosed AI/ML, proprietary software products, or APIs. The company holds OPQIBI qualification, a French sector-specific recognition that facilitates access to public procurement contracts and signals verified technical competence. OCCINERGY is led by founder David HAGGAI, who serves as owner, publication editor, and webmaster, and operates with a team of 11 employees organized into a Thermal/Environment pole and a Fluids pole. Customer relationships are anchored by repeat engagements with major national real estate developers and social housing operators including Bouygues Immobilier, VINCI Immobilier, Kaufman & Broad, ICADE Promotion, LP Promotion, Sogeprom, PSA Promotion, Les Chalets, and Promologis, alongside public-sector clients such as Mairie de Seysses and Enedis, with projects concentrated across the Occitanie region.

Name

OCCINERGY

Legal name

OCCINERGY

Website

https://occinergy.fr

Company type

Private

Founded year

2008

Operating status

Operating

Headcount range

11–50 employees

Short description

OCCINERGY is a Toulouse-based French engineering consultancy founded in 2008 that provides thermal, environmental, and fluid systems engineering studies for residential, tertiary, educational, and industrial construction projects, serving developers, social housing operators, and municipalities across the Occitanie region.

Ownership category

akta.pro rank

Headquarters

HQ city

Toulouse

HQ country

France

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Engineering Studies Services: Professional services revenue generated through providing technical engineering studies for construction and renovation projects. Services include thermal, environmental, fluid systems, and BIM services for residential, tertiary, educational, and industrial buildings. Revenue is project-based with missions ranging from specialized single-discipline studies to comprehensive multi-disciplinary engineering packages.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

OCCINERGY is a technical engineering consultancy (bureau d'études techniques) that provides specialized engineering studies in energy efficiency, environmental performance, and fluid systems for new construction and renovation projects. Its services span thermal/energy engineering, HVAC, plumbing and renewable energy, smoke extraction, electrical systems, building management, home automation, and BIM digital modeling for residential, tertiary, educational, and industrial buildings.

Product overview

OCCINERGY is a technical engineering consultancy specialized in Energy, Environment and Fluides (Fluids). Founded in 2008, the company provides comprehensive building engineering services across residential, tertiary, educational, and industrial sectors. Their portfolio consists of nine interconnected service offerings covering the full spectrum of building technical design: Environmental consulting, Thermal/Energy Engineering (with E2C1, E3C1, E3C2, BEPOS, BEPAS certifications), HVAC (Chauffage, Ventilation & Climatisation), Plumbing & Renewable Energy, Smoke Extraction Systems, Electrical Systems, Building Management Systems, Home Automation, and Building Information Modeling (BIM). These services are delivered through a team structure organized into two main poles (Thermique/Environment and Fluides) supporting diverse construction projects from new builds to renovations.

Differentiator

Problem solved

Functional benefit

Quantifiable outcome

• Projects achieving environmental certifications such as E2C1, E3C1, E3C2, BEPOS, BEPAS standards
• +1 more outcomes

Named customers12 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Scale indicators2 records

Recent moves4 records

Expansion highlights3 records

Direct peers

• Oteis: French multi-disciplinary engineering firm offering structural, MEP, environmental, and BIM services for buildings and infrastructure. Comparable multi-disciplinary BET model with stronger national footprint.
• Elithis: French independent engineering firm specialized in energy-efficient and positive-energy buildings. Highly comparable to OCCINERGY on building energy/thermal engineering focus and mid-sized French BET positioning.
• Burgeap: French engineering consultancy (Egis group subsidiary) focused on environmental, energy, and water engineering for buildings and sites. Directly comparable on environmental and energy study scope.
• TPF Ingénierie: French engineering subsidiary of TPF Group covering buildings, infrastructure, and energy. Comparable multi-disciplinary BET offering with broader geographic reach than OCCINERGY.
• AIA Ingénierie: French architectural and engineering firm specializing in healthcare, education, and complex buildings. Comparable on building technical design scope and BIM-driven delivery model.
• Ginger Group: French engineering group providing energy, environment, building, and infrastructure studies through multiple specialized subsidiaries. Overlaps directly with OCCINERGY on building energy and environmental engineering.
• ALTEREA: French engineering consultancy focused on energy performance, environmental studies, and fluid systems for buildings. Directly competes with OCCINERGY across thermal, environmental, and HVAC engineering scopes.

Broad incumbents

• setec Group: French independent engineering group with building, infrastructure, energy, and industrial divisions. Comparable on building technical studies but operates at significantly larger scale and broader scope.
• Egis: Major French engineering group (Caisse des Dépôts subsidiary) operating across transport, buildings, energy, and environment globally. Represents the scaled incumbent OCCINERGY could not yet compete with on national or mega-project bids.
• Artelia: Large independent French engineering group offering building, infrastructure, and industrial engineering services. Broader portfolio than OCCINERGY but directly overlaps on building MEP and energy studies.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/occinergy

Compliance1 record

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 OCCINERGY