Learn more about the site of Etrez (01), a salt cavern storage site located north-west of Bourg-en-Bresse.

Etrez's site

The Etrez (01) storage site

Commissioned in 1980, Etrez is a salt cavern storage site. It is located north-west of Bourg-en-Bresse, and extends across 5 towns of Ain. With a usable volume representing the annual consumption of the city of Lyon, it makes a large contribution to the secure procurement of natural gas in the Rhône-Alpes region.

View of Etrez's site

In terms of capacity, the Etrez site is the biggest salt cavern storage site in France, and the 5th biggest in Europe. The site is constantly developing, with the creation of new caverns and surface facilities, along with the renovation of the older facilities, with a view to constantly improving the operational and environmental performances: reduction of atmospheric emissions and noise pollution; limitation of the visual impact of surface facilities, carefully integrated into the countryside.

Read the site’s 2021 CSR report (french)


View of Etrez's site