The SAS BOIS BLEU ENERGIE was created by a group of eleven associated farms wishing to create a methanisation unit that will be located in the municipality of Airaines in the department of Somme. This project will inject 400 NM3/h of gas into the GRDF network, which will develop 36450 tonnes of resources in the territory using plant residues from agricultural holdings and local agri-food activity. Objective: the creation of a methanisation unit for waste from their territories to inject biomethane into the GRDF distribution network. The greenhouse gas balance for this project from the DIGES software (ADEME) highlights an overall GHG saving of 9927 tonnes equivalent. CO2 with reference to the situation so far. The proposed support for this project is part of the notification exemption scheme SA 59108 for environmental protection aid for the period 2014/2023 with eligible expenditure of EUR 9527699 from which the reference solution of EUR 1600000 or EUR 7927699 is subtracted. A proposal to accompany ERDF EUR 750000 represents an aid rate of 9.46 %.