Our flagship projects

Since 2005, we have developed local biogas production projects and built biomethane plants. Today, we have 90 plants in operation, for which we also provide operational, maintenance and feedstock sourcing support.

This full-scale service is ensured through KEON and our subsidiaries NASKEO, SYCOMORE and TEIKEI, both in France and abroad.

At KEON, we build biogas plants of all sizes, from small-scale agricultural units to large-scale plants for communities or municipalities, with either turnkey or collaborative options. We also revamp existing facilities to optimise their performance.

Les 3 Dômes

One of the KEON Group’s flagship projects, this regional biomethane plant is equipped with several processing systems, which enable it to adapt to different feedstocks (manure, intermediate energy crops, animal by-products, etc.), producing 250 Nm³ CH₄/h. Working alongside regional farmers, KEON is designing and financing this plant, NASKEO is building it, SYCOMORE will operate it […]

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Thèbes Energie

Thèbes Energie is the continuation of GAEC de Thèbes, a farming business run by the Bonal family consisting of a father and his two sons. The plant will recycle 15,000 tonnes of manure produced by GAEC as well as intermediate energy crops. There is also a community aspect to this project thanks to the creation […]

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Agesy Methavert

Agesy Methavert is the result of a collaboration between two families with farming businesses and their cooperative.The plant will recycle intermediate energy crops (crops planted between two main crops), processing 10,000 tonnes of material a year.Eventually, 170 Nm³ CH₄/h will be injected into the local gas distribution network.The project has several aims:• To contribute to […]

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Champs d’Energie

Led by François Saussier, a farmer in the Châtres commune, this project aims to achieve energy self-sufficiency, producing 120 Nm³ CH₄/h of biogas. The main feedstock is equine manure, which is collected from nearby equestrian centres and supplemented with plant matter.

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Energie 8

Located between La Flèche and Le Mans, this project was founded by eight farmers with similar businesses, all looking to diversify their income streams and join together to achieve a common goal: to recycle their effluents and vegetation cover locally. ENERGIE 8 will produce close to 140 Nm³ CH₄/h, enough to provide almost 1,500 households or […]

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Alliance Berry Energies Vertes

Led by ABEV, this regional biomethane project brings together 50 farming businesses who were keen to diversify their income streams and jointly invest in effluent management. The plant processes 100,000 tonnes of agricultural waste, primarily effluents (manure and liquid manure) and vegetable matter produced by the farming businesses involved in the project. The biogas produced […]

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Metha Collines

Located in the Drôme des Collines canton, the Metha Collines plant was built as an extension of GAEC Juven, a family-run business led by a father and his two sons. The plant will recycle effluents (manure and liquid manure) from the GAEC dairy and intermediate energy crops, producing 90 Nm³ CH₄/h.

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Doué Metha

In the commune of Doué-en-Anjou, 34 farms and two companies (Bioparc and la Rose Des Champs – a cooperative of vegetable producers) have joined forces under the simplified joint-stock company Doué Métha to build and supply a biomethane plant. The plant will process 35,000 tonnes of agricultural waste a year, recycling the biogas produced by […]

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Rohaut Bioenergie

Backed by a beef farm, this family-led project aims to achieve energy self-sufficiency by generating 100 Nm³ CH₄/h. The main feedstock for the digester is straw manure, which is sourced just a few metres from the biomethane plant and supplemented by vegetable matter. After three years, the plant was connected to the GRDF network, with […]

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Agrimethanacre

Located in the Bieville-Beuville commune on the outskirts of Caen, this plant has two separate processing systems, allowing it to produce 250 Nm³ CH₄/h of biogas. The first is fed by intermediate crops and vegetable by-products. The second is equipped with a hygienisation system and processes animal by-products. NASKEO was responsible for the agricultural project’s […]

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Agriénergie

This biomethane plant processes livestock manure, intermediate energy crops, fruit and vegetable waste and grape pomace. It generates 120 Nm³ CH₄/h for the TEREGA network. Founded by farmers, this regional project brings together both public and private stakeholders from the local area and was partly financed by crowdfunders.

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Bioénergie Pierroise

The communal agricultural project Bioénergie Pierroise brings together 10 farming businesses who were keen to diversify their income streams and jointly invest in effluent management through biomethane production. The plant processes 30,000 tonnes of agricultural waste – primarily effluents (manure and liquid manure). It produces 140 Nm³ CH₄/h, which is injected into the GRDF network.

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FouchÉnergies

A key strand of the GAEC les Bories business, the FOUCHENERGIE project enables the recycling of porcine and ovine effluents. Located in the heart of the Lot department, the farm’s biomethane plant supplements its feedstock with intermediate crops to generate 180 kW of electricity.

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Prometer

At the bequest of the community, around 60 farmers have come together under the company EVAM to found a group agricultural biomethane project. Working with the Banque des Territoires and Engie Bioz, EVAM launched this innovative biomethane plant at the start of 2023. Producing more than 600 Nm³ CH₄/h, it has two large hoppers into […]

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Apivale

Combining different approaches to recycling organic effluents, the APIVALE project was founded on the principles of agroecology and industrial ecology, two disciplines inspired by ecological processes. APIVALE’s semi-industrial-sized machinery is located at the INRAE site in the commune of Saint-Gilles (35). With storage tanks and racks measuring between 1 and 10 m³, a 15 m³ […]

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Haut Segala Bioenergie

The Limargue Bioénergie, Sud Segala Bioénergie and Haut Ségala Bioénergie projects were founded by the Fermes de Figeac cooperative. The original aim was to bring together several small farming cooperatives to participate in a shared project. This decision made it possible to divide up certain costs and the design of the project while optimising transport […]

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Limargue Bioenergie

The Limargue Bioénergie, Sud Segala Bioénergie and Haut Ségala Bioénergie projects were founded by the Fermes de Figeac cooperative. The original aim was to bring together several small farming cooperatives to participate in a shared project. This decision made it possible to divide up certain costs and the design of the project while optimising transport […]

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Sud Segala Bioenergie

The Limargue Bioénergie, Sud Segala Bioénergie and Haut Ségala Bioénergie projects were founded by the Fermes de Figeac cooperative. The original aim was to bring together several small farming cooperatives to participate in a shared project. This decision made it possible to divide up certain costs and the design of the project while optimising transport […]

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Viazac Bioénergie

Viazac Bioénergie is one of four biomethane plants founded by the Fermes de Figeac cooperative.Located on the GAEC des Scaumels site in the commune of Viazac, it brings together three other agricultural businesses.A 160 kW cogeneration motor powers the processing of effluents (manure, liquid manure) from the four farms.

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Biomethadour

Located in the foothills of the Pyrenees, this plant was founded by a group of four farmers and processes 20,000 tonnes of effluents and crop residues every year. The biogas is cleaned to create biomethane, which is injected into the GRDF network. Find out more

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