ENUSA INDUSTRIAS AVANZANDAS, S.A., S.M.E. (ENUSA) is a public enterprise 60% owned by the Sociedad Estatal de Participaciones Industriales (SEPI), an agency of the Ministry of Finance and Public Administrations, and the remaining 40% by the Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), which in turn belongs to the Ministry of Science, Innovation and Universities. The company focuses on nuclear and environmental businesses.