From the outset of its collaboration with La Fabrique Circulaire, La Nébuleuse expressed its desire to work on resource efficiency, optimizing their use and avoiding waste. Efforts focused primarily on the CO2 resource, with the aim of recovering the CO2 emitted during beer fermentation, and valorizing it with other local players who use CO2 in their production.

After estimating the actual volume of CO2 produced by La Nébuleuse, La Fabrique Circulaire identified the various possible applications for its recovery. These were prioritized on the basis of a simplified technical-economic analysis. At the same time, La Fabrique Circulaire identified partners motivated to design a collaborative project with the aim of creating a "local CO2 ecosystem", made up of producers, buyers and traders based in Romandy. The first exchanges were fruitful, and led to the submission, at the end of April 2024, of a "sustainable collaborative project" to the SPEI (Service de la Promotion et de l'Innovation du Canton de Vaud), subsidizing the project up to CHF 100k.