 Centrale Paris and Supélec signed an outline agreement in 2005 in order to mutualize third year majors.Both of the schools already enrolled students at the end of Preparatory class through a common examination; they now share a common major in Energy.Since 2005 their cooperation has been strengthened, especially in research and industrial partnerships (the awarding of the ‘’label Carnot’’ to the Centrale-Supélec-CNRS (C3S) grouping is a significant result).