Learn more about the site of Saint-Illiers-la-Ville (78), an aquifer storage site located some fifteen kilometres west of Mantes-la-Jolie.

Saint-Illiers' site

The Saint-Illiers-la-Ville (78) storage site

Commissioned in 1965, the Saint-Illiers-la-Ville site is an aquifer storage site. Located some fifteen kilometres west of Mantes-la-Jolie, it extends across 9 towns of Yvelines and occupies a strategic position for the procurement of natural gas for Île-de-France and Normandy.

Since its commissioning, the site has undergone various renovation programmes aimed at developing storage capacities and optimising environmental performances. The technological improvements include the installation of the latest electric compressors to reduce atmospheric emissions and limit noise pollution.

Read the site’s 2021 CSR report (french)

View of Saint-Illier's site


Vue élargie du site de Saint-Illiers-la-Ville