French agriculture has a wealth of raw and waste materials that are suitable for biogas plants. However, only half of the available materials are presently used for energy production. Thus, ambitious development plans have been drawn up: By 2020, the biomass share in the field of renewable energies in France is to rise to about 50%.

No wonder that that the number of Request for Proposals (RFPs) for plant projects for the generation of energy from biomass is on the rise. This affects the order pipeline of established biogas plant manufacturers like the German WELTEC BIOPOWER GmbH. Meanwhile, the project list includes about 30 French biogas plants. Some of these projects are rolled out in cooperation with Méthalac from Lyon, France.

This expertise was one of the reasons why WELTEC BIOPOWER and Méthalac received an order for a biogas project with gas processing in summer 2014. The plant in the north of the Franche-Comté region on the Swiss border will be completed in spring 2015, after which it is expected to supply biomethane to the French natural gas grid at a rate of 70 standard m³/h.

Thus, the plant stands witness to the increasing importance of the processing of biogas to biomethane. Though France only has five plants with gas feed-in, the population is growing, especially in view of the ample supply of biomaterials. This is also the case with the plant in Franche-Comté. The biomethane is processed from 6 000 t of agricultural waste, such as cattle manure, pig manure, intertillage and starch. These are digested in a stainless steel fermenter with a capacity of about 1 500 m³.

Together with Biogaz Services from Metz-Tessy, Méthalac will be responsible, not only for the installation and commissioning, but also for the maintenance of the WELTEC biogas plants. The team has a wealth of experience, especially in connection with the employed WELTEC material, and will ensure perpetually stable, economic operation.