Despite an economic situation currently unfavourable to renewable thermal energy, the city of Corbie wanted to engage in the construction of a heating network powered by a biomass boiler with a gas supplement, following a study of opportunity launched by the Departmental Council of the Somme. The municipality has transferred its heat competence to the Fédération départementale d’Energie de la Somme (FDE 80), which has chosen to set up the operation under direct management and thus assumes the financing and has the works carried out by a single economic operator, also responsible for the operation for 8 years. The FDE 80 then charges the heat to the network subscribers. The grid is powered by a 2 000 kW biomass boiler with 2 wood boilers of 1280 and 720 kW and a supplement provided by a gas boiler of 2.500 kW at the production site. The hospital retains some of its gas-fired heat to provide its own relief (the network is not intended to distribute this heat to other subscribers). The gas booster power is a total of 6 580 kW. This network supplies 24 substations spread over 7 subscribers. The characteristics of the project are as follows: Energy delivered: 7,941 MWhu/year — Subscribed power: 7 170 KW — Biomass production — toe wood output boiler: 7 454 MWh — 641 useful toe/year — Biomass cover: 91 % — Linear of the network: 2 492 mL — Network Density: 3.2 MWh/mL