Co-development of and co-investment in biomethane projects

Drawing on many years' experience, we help you develop your projects, from compliance with the relevant regulations right through to operation.


Operating and maintaining

Since 2014, we have helped optimize the performance of biomethane plants. To do this, we offer services that leverage all operational drivers requiring concurrent management.



As organic waste experts, we bring together waste producers and short-circuit plants to recycle waste and benefit the country as a whole.


Feedstock sources

20 000 tonnes per year


Manure & Liquid manure

Cereal offal

Intermediate energy crops


120  Nm³/h of biomethane

This biomethane plant is the product of a collaboration between holding company Methamaine, renewable energy company ENGIE BiOZ and intercommunal association Territoire d’Energie Mayenne. The simplified joint-stock company METHAMAINE is run by 11 farming businesses and a limited liability company to source equine manure. The plant is located in the commune of Meslay-du-Maine (53) in the Mayenne department. The region has several characteristics that make it suitable for an agricultural biomethane project.
• Challenges in recycling horse manure due to a decline in mushroom farming businesses in the Val de Loire region and an increase in manure transport costs caused by the diesel price hike.
• Long-term investment and capital development models designed for transfers and changes within agricultural businesses.
• Concrete progress towards the energy transition at the regional level in response to the federation of municipalities’ Positive Energy Region road map.
• Establishment of an innovation training and technological monitoring tool by one of the partners: Agri Campus Laval.
The plant aims to generate 10 GWh of biogas and will inject 120 Nm³/h of biomethane into the GRDF network, meeting 50% of Meslay-du-Maine’s energy needs in winter and 100% in summer.

Households supplied with gas
Gas-powered buses

Get in touch

Call us

Need help or have a question about your biomethane project? We're available from 8 am to 6 pm, Monday to Friday. Feel free to get in touch if you need our help.

+33 (0)1 57 21 34 70

Come and see us

Want to meet us in person? 
You can find us at 52 rue Paul Vaillant Couturier - 92240 Malakoff or at 3 Rue Galilée - 44 340 Bouguenais

View on map

Send us a message

Want to find out more about our services? Send us a message with just a few clicks.

Send us a message