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.


Biogaz des Marches de Bretagne

Maen Roch (35)

Feedstock sources

24 000 tonnes per year


Livestock manure

Crop waste

Agri-food industry waste


120 Nm³ CH⁴/h

Ter’Green has joined forces with 14 farmers, the local semi-public company Energ’iv, BreizhÉnergie, Energie Partagée, the Couesnon Marche de Bretagne local council community, the Pays de Fougères SMICTOM (public service) and LLC Vadma to develop and co-finance a regional biomethane plant in the commune of Maen Roch in the French department of Ille-et-Vilaine. The plant aims to recycle 22,000 tonnes of agricultural waste and biowaste from the surrounding area to produce 120 Nm³/h of biomethane to be injected into the GRDF network, as well as 20,000 tonnes of digestate that will be used by farms as a substitute for conventional fertilisers.

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

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