What Oksigen does

Oksigen is a privately held French consulting firm (SAS) headquartered in Nantes, with a second office in Bègles (Bordeaux region). Founded in 2020 by Luc Robet — formerly head of the Nantes Métropole Energy Service and Energy Manager at Groupe Eram — the firm delivers environmental strategy and energy performance consulting to French enterprises and public organizations.

The company's offering is a six-part professional services portfolio: energy purchasing advisory (electricity and gas contract optimization), energy consumption management (including Décret Tertiaire, BACS, and CSRD regulatory compliance), environmental strategy development, regulatory compliance, transition financing, and maintenance contract management. Services are delivered by a team of 17 named Energy and Carbon Managers who embed directly into client organizations, working alongside directors, RSE managers, construction managers, and CFOs. The firm has no proprietary software platform; its value proposition rests on consultant-led expertise and on institutional partnerships with ADEME and regional Chambers of Commerce.

The business model is professional services: customized project engagements billed on a scope-based quote, with no publicly disclosed pricing. The go-to-market is sales-led, leveraging the website contact form, Calendly booking, direct phone/email outreach, LinkedIn presence, and client referrals. Disclosed customers include FIRALP Group (construction/infrastructure, targeting 20% CO2 reduction across Scopes 1-3 by 2030) and Etam (retail), alongside an additional set of unnamed logos. The firm is bootstrapped (€20,000 registered capital, no external funding rounds identified) and remains founder-owned.

Name

Oksigen

Legal name

OKSIGEN

Website

https://oksigen.fr

Company type

Private

Founded year

2020

Operating status

Operating

Headcount range

11–50 employees

Short description

Oksigen is a Nantes-based French consulting firm founded in 2020 that delivers energy performance, low-carbon strategy, regulatory compliance, and environmental transition advisory services to enterprises and public organizations across France, with a second office in Bègles.

Ownership category

akta.pro rank

Product category

Energy & Environmental Consulting

NAICS

Environmental Consulting Services (54162), Management Consulting Services (54161), Other Management Consulting Services (541618)

SIC

Services-Management Consulting Services (8742), Services-Engineering, Accounting, Research, Management (8700)

akta.pro primary industry

Sustainability & ESG Consulting (BPAHACAK)

akta.pro secondary industries

Sustainability, ESG & Climate Risk Advisory (BPAHAJAH), Corporate & Voluntary Procurement Policy (PPAs, Green Tariffs, 24/7 CFE) (EUAMANAH), Carbon Policy Interface for Renewables (ETS/Offsets/Carbon Taxes) (EUAMANAI), Environmental Compliance & Permitting (BPAHAJAA)

Keywords

• Energy management consulting
• Low-carbon strategy
• Energy purchasing advisory
• Environmental compliance consulting
• Carbon reduction advisory

Headquarters

HQ city

Nantes

HQ country

France

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Consulting Services: Professional consulting engagements for energy purchasing, consumption management, environmental strategy, regulatory compliance, transition financing, and maintenance contract management. Services are tailored to each client organization.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

OKSIGEN is a French consulting firm (cabinet de conseil) that advises organizations on energy purchasing, energy consumption reduction, environmental and low-carbon strategy, regulatory compliance (Décret Tertiaire, BACS, CSRD), transition financing, and maintenance contract management. Engagements are delivered by Energy and Carbon Managers who integrate directly into client teams alongside directors, RSE managers, construction managers, and CFOs. Services are sold as customized consulting engagements rather than as a packaged software product.

Product overview

OKSIGEN is a consulting firm (cabinet de conseil) specializing in environmental strategy and energy performance management. The company offers a suite of consulting services including energy purchasing advisory, energy consumption management, environmental strategy development, regulatory compliance, transition financing, and maintenance contract management. These services are delivered by Energy and Carbon Managers who guide clients through their environmental transition journey. The offering is structured as a unified consulting service portfolio rather than a software platform.

Differentiator

Problem solved

Functional benefit

Products and services

• Sécurisation des achats d'énergies (Energy Purchasing Advisory)

Quantifiable outcome

• FIRALP Group: 20% CO2 reduction target by 2030 across all three scopes (Scopes 1, 2, and 3)

Named customers2 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Three partnerships are on record, tiered core and minor.

• ADEME (Agence de l'Environnement et de la Maîtrise de l'Énergie)coreStrategic or Co-development PartnerNational French agency supporting environmental and energy transition projects. Listed as partner/certification on OKSIGEN's website, indicating collaboration on environmental initiatives.
• CCI Bordeaux Gironde (Chambre de Commerce et d'Industrie)minorStrategic or Co-development PartnerRegional Chamber of Commerce and Industry in Bordeaux area. Listed as partner supporting OKSIGEN's activities in the southwestern France region.
• CC InstnminorStrategic or Co-development PartnerChambre de Commerce institution partner. Listed among OKSIGEN's partners and certifications.

Scale indicators2 records

Recent moves7 records

Expansion highlights5 records

Direct peers

• GreenFlex: French consultancy providing energy efficiency, environmental performance, and CSR advisory to enterprises. Overlaps directly with OKSIGEN on energy consumption management and environmental strategy, but operates at substantially greater scale and with broader service scope.
• Energies Demain: French independent consultancy advising territories, businesses, and public bodies on energy transition, energy planning, and low-carbon strategy. Closely comparable to OKSIGEN on environmental strategy and regulatory support, with stronger territorial/urban planning exposure.
• Carbone 4: French independent consultancy specializing in carbon strategy, climate transition, and sustainability advisory for organizations. Closely comparable to OKSIGEN in offering low-carbon strategy and climate advisory, though Carbone 4 is more recognized as a thought leader and significantly larger.
• EcoAct (an ENGIE company): France-headquartered carbon and climate consultancy now part of ENGIE, serving enterprises on carbon footprinting, strategy, and CSRD-aligned reporting. Directly comparable to OKSIGEN's low-carbon strategy and regulatory compliance services, with greater geographic reach.
• Altermain (ADEME partner ecosystem): French energy and environmental consulting boutique working with ADEME-affiliated clients on energy performance and decarbonization. Highly comparable to OKSIGEN in size, French regional focus, and service mix around energy and carbon strategy.

Emerging players

• Deepki: French SaaS platform for real-estate energy and ESG data management. Comparable to OKSIGEN in serving enterprises on energy performance and CSRD-style reporting, but differentiated by a software-led model rather than boutique consulting.
• Metron (Dalkia/EDF group): French energy management and efficiency firm combining advisory with energy data analytics. Overlaps with OKSIGEN on energy consumption management and ISO 50001-style work, with stronger technological tooling but narrower scope than OKSIGEN's broader environmental strategy practice.

Broad incumbents

• TÜV Rheinland France: International certification and EHS consultancy with strong French presence, offering ISO 14001, energy, and environmental compliance services. Comparable on the regulatory compliance and management systems side of OKSIGEN's offering, but as a much larger incumbent.
• Bureau Veritas: Global testing, inspection, and certification giant with a dedicated EHS, energy, and sustainability consulting practice. Overlaps with OKSIGEN across compliance, environmental management systems, and energy performance but competes as a broad incumbent rather than a specialized French boutique.

Regional players

• Becip-Franlab (subsidiary of IFPEN): French energy and environmental consulting subsidiary of IFPEN providing technical advisory on energy efficiency and environmental strategy to French organizations. Comparable to OKSIGEN on energy and emissions advisory, with deeper industrial and upstream-energy expertise.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat2 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/oksigen

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 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 Oksigen