Established in May 2012, ACUE Federation has 28 members, among which many important groups from the energy sector such as CEZ România, E.ON România, Societatea Energetică Electrica SA, ENEL România, ENGIE România, GAZ EST, C.N.T.E.E. Transelectrica SA, WIEE, with a total of about 27,000 employees and an annual turnover of over EUR 5.5 billion.