Groupe KEON

What Groupe KEON does

Groupe KEON is a French biomethane company founded in 2005 and recognised as a pioneer of anaerobic digestion in France. It operates a vertically-integrated business model organised around four main subsidiaries: TEIKEI (feedstock supply), NASKEO (methanisation plant construction), SYCOMORE (operations and maintenance), and TER'GREEN (co-development and co-financing of biomethane projects). The group also operates NASKEO Kankyo in Japan and has expanded into Canada, Italy, Germany, Spain, and French Guiana.

The group's core technology offering rests on proprietary methanisation processes including MONO-MÉTHA® (a single-stage methanisation technology launched in February 2026), FLEXIMIX, and CH4+, supported by ADEME-funded R&D projects (FLEXIMIX, FLEM) and a database of 1,500 analyses accumulated over two decades. Its product portfolio also extends into CO2 capture via CAPCOO and into space-sector energy supply through the BI-FROST project with CNES for Ariane launchers. The group reports 90 operational plants, 250 methaniser customers under SYCOMORE O&M contracts, 40 methanisation partner sites supplied by TEIKEI, and 20 projects developed or invested through TER'GREEN.

Groupe KEON generates revenue across multiple streams: NASKEO earns engineering, procurement, and construction (EPC) revenue on new-build plants; SYCOMORE generates recurring O&M revenue across the installed base; TEIKEI earns feedstock supply margins; and TER'GREEN earns returns as a co-developer and co-investor. The group employs 130 people, reported €50 million of revenue in 2025, and secured €40 million in bond financing from Sienna Investment Managers in May 2025 to double its project portfolio by 2028. The Marguerite Fund (backed by the European Investment Bank) is the majority shareholder, and 50% of employees hold shares in the group. The company is headquartered in Malakoff, France.

Name

Groupe KEON

Legal name

Groupe KEON, Société par Actions Simplifiée

Website

https://keon-group.com

Company type

Private

Founded year

2005

Operating status

Operating

Short description

Groupe KEON is a French biomethane pioneer founded in 2005 that operates a vertically-integrated platform (TEIKEI, NASKEO, SYCOMORE, TER'GREEN) covering feedstock supply, plant construction, O&M, and co-investment, serving agricultural, municipal, and industrial customers across 90 operational plants and 250 methaniser clients.

Ownership category

akta.pro rank

Product category

Renewable Energy Biogas Services

SIC

Cogeneration Services & Small Power Producers (4991)

akta.pro primary industry

Biogas/RNG Plant Development, EPC & Project Delivery (EUAAAEAH)

akta.pro secondary industries

Biomass & Waste-to-Energy Plant EPC (EUAEAAAI), Biomass Collection, Baling/Chipping & Pre-processing Services (EUAAAFAD), Biofuels & Renewable Fuels Switching (Biomethane/RNG, Bio-oils, Sustainable Biomass) (EUABAJAD), Organics-to-Energy & CHP from Biogas (On-site Power/Heat) (EUAIAEAG)

Keywords

• Biomethane production services
• Anaerobic digestion plants
• Biogas project development
• Organic waste valorization
• Renewable natural gas infrastructure

Headquarters

HQ city

Malakoff

HQ country

France

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Supply Chain, Infrastructure

Revenue model

1. Project Co-development and Co-financing: KEON develops and co-invests in biogas projects alongside local partners (farmers, cooperatives, municipalities), generating returns through equity participation and project development fees
2. Biogas Plant Construction (NASKEO): Design, construction, and commissioning of biomethane plants for third-party clients and co-investment projects
3. Operations and Maintenance (SYCOMORE): Ongoing operational support, maintenance contracts, biological monitoring, and performance optimisation services for biomethane plants
4. Feedstock Sourcing (TEIKEI): Local organic waste sourcing and supply services connecting producers of organic matter with biomethane plants

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

Groupe KEON develops, finances, builds, and operates biomethane plants that convert organic waste into renewable biogas and natural fertiliser through anaerobic digestion. The group operates through four subsidiaries covering the full value chain: TER'GREEN for co-development and co-financing, NASKEO for plant construction, SYCOMORE for operations and maintenance, and TEIKEI for organic waste sourcing. KEON's flagship standalone product is MONO-MÉTHA®, a turnkey agricultural biomethane unit. The company targets farmers, agricultural cooperatives, municipalities, and industrial companies in France and internationally.

Product overview

KEON is a French pioneer in biomethane production, operating an integrated value chain across four subsidiaries. TER'GREEN co-develops and co-finances biomethane projects; NASKEO designs and builds the plants using technologies including wet digestion, dry digestion, hygienization, and hydrolysis; SYCOMORE operates, maintains, and optimizes plants including via an in-house biological monitoring lab; and TEIKEI sources and secures local organic feedstock supplies. The flagship turnkey product is MONO-MÉTHA® for agricultural farms. The group also participates in the CAPCOO collective for biogenic CO₂ valorization and has partnered with Enogia for ORC-based heat-to-electricity conversion. KEON supports projects from initial feasibility through to full operation, serving farmers, municipalities, and industrial clients in France and internationally.

Differentiator

Problem solved

Functional benefit

Products and services

• TER'GREEN Biogas Project Co-Development and Co-Financing Co-development and co-financing service for biomethane projects, providing equity contributions and project development expertise alongside farmers, municipalities, and industrial partners through Ter'Green (now integrated as KEON). 20 projects have been developed and invested in through this entity.
• NASKEO Biomethane Plant Construction Design and construction of biomethane plants by NASKEO, offering custom-engineered solutions tailored to feedstock type, site conditions, and biogas recovery method (injection, cogeneration, or CO2 recovery). More than 90 plants have been built in France and internationally.
• SYCOMORE Operations and Maintenance Services SYCOMORE provides operations, maintenance, and performance optimisation services for biomethane plants, including delegated management, biological monitoring, and spare parts delivery across France. The service serves 250 methaniser clients.
• TEIKEI Organic Waste Sourcing and Supply TEIKEI is the local expert in organic waste, connecting feedstock producers with biomethane plants through sourcing, analysis, and secure supply of organic matter. The service supplies 40 methanisation partner sites.
• MONO-MÉTHA® Turnkey Agricultural Biomethane Unit A turnkey agricultural biomethane unit by NASKEO featuring a mono digester, designed for farm-scale operations processing up to 10,950 tons of waste per year. The offering includes funding support, project management, and 3 months of operational assistance from SYCOMORE. Launched February 2026.

Quantifiable outcome

• 90 biogas plants operational in France and internationally
• +3 more outcomes

Named customers7 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

15 partnerships are on record, tiered strategic, innovative, minor and core.

• SCARAstrategicStrategic or Co-development PartnerCentury-old agricultural cooperative focused on grain collection and marketing (wheat, barley, rapeseed, sunflower). Committed to environmentally friendly processes and sustainable agriculture.
• INRAE (French National Research Institute for Agriculture, Food and the Environment)strategicStrategic or Co-development PartnerResearch partner for BIOGAZ RIO project and ongoing innovation initiatives. KEON has a historic partnership with INRAE for R&D projects.
• ADEME (French Agency for Ecological Transition)strategicStrategic or Co-development PartnerFunds FLEXIMIX and FLEM innovation projects for pre-treatment systems and electrical flexibility of biomethane plants.
• SOLAGRO, CLARKE ENERGY, SMASHstrategicStrategic or Co-development PartnerPartners in FLEM project (Flexible Electrique des Méthaniseurs) funded by ADEME, aimed at improving integration of biogas plants within the French national grid.
• CNES (Centre National d'Études Spatiales)innovativeStrategic or Co-development PartnerPartnership for BI-FROST project to supply Ariane launchers with biomethane, developed in French Guiana, contributing to space industry decarbonisation.
• FinergreenminorImplementation/ SI/ Consulting PartnerFinancial advisory firm specialised in energy transition that assisted KEON with the €40M Sienna IM financing operation.
• VIRIDIS / KERIDIS (Canada)strategicStrategic or Co-development PartnerFollowing Quebec biomethane programme launch in 2020, VIRIDIS and KEON joined forces. KERIDIS currently working on five biomethane projects in Canada.
• SUMAcoreTechnology or IntegrationSYCOMORE is sole supplier of SUMA products (agitators and pumps) in France for biogas and agriculture applications.
• Sistag WeycoreTechnology or IntegrationSYCOMORE is official representative of Wey valves in France, serving water treatment, manufacturing, mining, and biogas production sectors.
• VogelsangcoreTechnology or IntegrationEquipment supplier for biogas production including pumps and macerators for fermentation processes.
• BAUR FoliencoreTechnology or IntegrationManufacturer of technical fabric products including double membrane gas holders for biogas storage in biomethane plants.
• PUMPEcoreTechnology or IntegrationManufacturer of dosing and mixing systems (hoppers) for biogas plants since 1930.
• Wangen PumpencoreTechnology or IntegrationManufacturer of cavity pumps for agriculture and biogas industries since 1969.
• BörgercoreTechnology or IntegrationGerman family business designing, manufacturing, and selling lobe pumps, macerating units, and screw presses worldwide.
• CAPCOOstrategicStrategic or Co-development PartnerFarmer-led collective capturing and upgrading CO₂ from biogas plants, offering industrial players a local supply of food-grade CO₂ for decarbonisation.

Scale indicators8 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Arol Energy: France-based biomethane developer, EPC, and operations player that competes with KEON across the full agricultural-to-injection value chain similar to TER'GREEN+NASKEO+SYCOMORE.
• BTS Biogas: Italian biomethane plant EPC contractor with comparable wet and dry anaerobic digestion technologies targeting agricultural feedstock in the same European agricultural markets as KEON.
• PlanET Biogas: German biogas plant EPC firm providing design, construction, and service for agricultural and industrial biomethane installations — directly comparable to NASKEO's construction offering.
• agriKomp: German agricultural biogas EPC and services company with container-based methanisation solutions that overlap with NASKEO's farm-scale MONO-MÉTHA® offering.
• Waga Energy: French renewable natural gas producer focused on landfill gas upgrading via proprietary technology; comparable French biomethane operator with co-investment and development capabilities.
• Evergaz: French independent biomethane project developer and operator; competes with KEON for mid-market municipal and agricultural methanisation projects in France.
• BioConstruct: German biomethane plant EPC contractor competing head-to-head with NASKEO on turnkey agricultural and industrial anaerobic digestion projects across Europe.

Broad incumbents

• Hitachi Zosen Inova (Schmack Biogas): Schmack Biogas (now part of Hitachi Zosen Inova) is a long-established German biogas EPC and services player; offers comparable agricultural and waste-to-energy solutions as part of a much larger industrial group.
• Engie Biogaz: ENGIE's biomethane subsidiary is a broader renewables incumbent operating injection, cogeneration, and mobility projects across France, with overlapping municipal offtake and project-development activity.
• Methacons / Methavalor (Suez): Suez's biomethane and organic waste valorisation arm brings large-incumbent capital and customer relationships that overlap with KEON's municipal and industrial waste-to-energy projects.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat7 records

Key risks4 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/group-keon

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries5 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 Groupe KEON