NaTran adapting facilities to inject renewable gases into French national grid

In France, Europe’s second-largest gas transmission operator, NaTran is adapting its facilities to enable the injection of renewable gases into the French grid. Clemessy experts carried out a design-build project to install and commission a biomethane injection station at Fontaine-le-Dun (76), in order to connect TotalEnergies’ new biomethane production site (BioNorrois) to the gas transmission network. In this way, they are contributing to the industry’s energy transition towards renewable gases and decarbonization.

TotalEnergies Green Gases and LNG has built an anaerobic digestion plant in Fontaine-le-Dun (76), which recovers beet pulp from the Cristal Union agro-industrial cooperative by mixing 50% of it with other inputs (slurry, agricultural and agri-food waste) from neighbouring farms. Eventually, the biomethane produced by BioNorrois should cover the annual energy needs of 30,000 inhabitants (150 GWh PCS of biomethane/year).

Clemessy built the containerized injection station for NaTran in the vicinity of the site, as they have done on some fifty similar sites in France. This enables the gas to be analyzed, metered, filtered and odorized to give it its characteristic smell, before injecting it into the transmission network. Earthworks and asphalt paving at the BioNoirrois methanization site and around the injection station were carried out by Eiffage Route.