Who we are

ENUSA-ENSA, AIE (hereinafter, EEAIE) is an association of companies, under the Economic Interest Grouping system, made up of the companies ENUSA Industrias Avanzadas S.A. S.M.E. (hereinafter, ENUSA), Equipos Nucleares S.A. S.M.E. (hereinafter, ENSA) and ENWESA-Operaciones S.A. S.M.E. (hereinafter, ENWESA).

ENUSA is a public company 60% owned by the State Company of Industrial Shares (SEPI) and 40% by the Centre for Energy, Environmental and Technological Research (CIEMAT). Among other activities, it engages in the entire fuel process for nuclear power plants, including uranium oxide collection, design, fabrication, delivery and services for the handling, inspection, cleaning and repair of nuclear fuel.

Equipos Nucleares S.A. S.M.E. is a public company 100% owned by the Sociedad Estatal de Participaciones Industriales (SEPI). Its main activity is the manufacture and supply of nuclear components and containers for spent fuel, as well as heavy components for energy, chemical and iron and steel installations. In addition, the company has a line of activity that deals with the maintenance, operation support, decommissioning and dismantling of power generation plants.

ENWESA-Operaciones S.A. S.M.E. is a service company of the ENSA group specialised in mechanical and electrical maintenance and assembly; communications systems and nuclear services in power plants, the petrochemical and naval sectors, among others.

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Our story

The Group was created in April 1995 under the initial name of ENUSA-ENWESA, AIE, by ENUSA and ENWESA to provide nuclear fuel services at the plant. Subsequently, WESTINGHOUSE TECHNOLOGY SERVICES S.A. (hereinafter, WTS) became a member of EEAIE with a 25% stake, the remaining 50% being held by ENUSA and 25% by ENWESA. In November 2017, due to the exit of WTS from EEAIE through the sale of its shareholding to ENSA, EEAIE was consequently constituted by ENUSA (50%), ENSA (25%) and ENWESA (25%).