[en] Full text: Born in the 1973 oil crisis around European consumers and one producer, the EURODIF enrichment enterprise has become a major international nuclear fuel front end actor. During 20 years, its gaseous diffusion enrichment plant has been improved and optimized. Its flexibility is a unique asset, allowing the best use of the newly deregulated electricity market, for the best interest of EURODIF's clients. Competitiveness, high safety standards and environmental excellency augur well for a reliable and sustainable future. This future will include a technological transition before the 2015 horizon. This progressive transition from gaseous diffusion to modern centrifuge is being prepared, while making the best use of the existing Georges Besse diffusion plant, fit to serve well beyond the coming decade, during which worldwide customers will benefit from EURODIF reliability, flexibility and large capacity. With and beyond gaseous diffusion, COGEMA/EURODIF will remain a sustainable long term supplier of enrichment services in the developing future nuclear world. (author)