ENSA Services Division (origin of ENWESA) is established.

ENWESA Servicios (ENSA + WESTINGHOUSE) is founded.

ENUSA-ENWESA AIE is established.

Enwesa Operaciones is established on december 23th.

Former ENWESA Servicios starts a new stage as ENWESA Operaciones..

Corporate address goes form Madrid to Maliaño and later (2002) to Heras.

ENWESA sets a UTE subsidiary aimed to maintenance during operation of Ascó and Vandellós nuclear power plants.

ENWESA is ISO-9001 certified.

ENWESA is ISO-14001 (environmental management system) certified.

Reactor vessel operations (opening and closing) in Angra (Brasil).

Combined cycle power plant construction onset within Tarragona I project.

Onset of spent fuel casks loading with ENSA.

Construction of two combined cycle power plants in Plana del Vent.

St Alban NPP (France) condenser retubing.

Onset of shipbuilding activity within S-80 submarines project for NAVANTIA.

New work center in Parbayón to support railway industry activities. Later this facility is used for stainless steel construction.

ENWESA starts valve maintenance activities y French nuclear power plants.

ENWESA’s gender equality plan.

ENWESA takes part in the United Nations Global Compact.

ENWESA is OHSAS 18001:2007 (Occupational health and safety) certified.

Significant activities both in nuclear services, with cono-seal (closure vessel reactor head penetration) replacement at ANAV with Westinghouse, and non-nuclear services such as maintenance during operation of Repsol’s Casablanca offshore platform and installation of ELECNOR’s Aste 1A solar plant turbine in Ciudad Real.

Robot operated facility for neutron sources handling in CIEMAT.

CINC (Cluster for Nuclear Industry in Cantabria) is founded.

Code of Good business practices y approved within ENSA Group.

Opening of a branch office in France is the onset of large-scale valve maintenance activity abroad.

Onset of decommissioning of nuclear power plants with Zorita NPP project.

Shipbuilding in Puerto Real shipyard within SUEZMAX project in NAVANTIA.

Bouchain combined-cycle power plant construction for General Electric in France.

Major overhaul contract for S-71 submarines and S-80 submarine construction project, both for NAVANTIA.

Onset of special nuclear repair activities (local and international) along with ENSA and WESTINGHOUSE (Doel, Krsko, Vandellós).

Migration from OHSA 18001 to ISO 45001 health and safety certification.

New work center in Cartagena gives support to Navantia’s projects.

New UTE ENWESA-MARSEIN now includes electrical and instrumentation services for ANAV.

First gender equality plan submitted to the Government of Cantabria.

New standard of business and ethics for third parties approved.

Gender equality plan is updated.

New compliance policies for criminal liability and anti-bribery.

ENWESA is now certified UNE 19601 (compliance policy for criminal liability) and ISO 37001 (anti bribery).

Continuity with Navantia’s projects.

Rotating equipment support services in Cofrentes NPP.

Pursuing new international business opportunities in markets like nuclear services in Brazil and valve maintenance in Mexico and new local strategic business, like green hydrogen related projects.

Our history began in 1973, with the incorporation of Equipos Nucleares, SA, SME (ENSA), a public company majority owned by Sociedad Estatal de Participaciones Industriales (SEPI). To meet the demands of the Spanish civil nuclear programme for manufacturing large nuclear components, ENSA opened its plant in Maliaño (Cantabria) and began operations in 1976.

In 1980, ENSA sets up its services division aiming to work in nuclear power plants in an array of tasks such as main components assembly, and repair, fuel handling, mechanical maintenance, decontamination and decommissioning, which later laid the foundations for the collaborative entity ENWESA Servicios through the participation of Westinghouse Technology Services in 1985.

In order to make the most of our capabilities, ENWESA teams with ENUSA Industrias Avanzadas S.A. and WESTINGHOUSE TECHNOLOGY SERVICES S.A.. Thus, the ENUSA ENWESA AIE association of companies was born, providing Nuclear Fuel services in Nuclear Power Plants since its creation in 1995.

ENWESA Servicios incorporates four product lines: Nuclear Services, Maintenance & Rotating Equipment, Manufacturing and Valve maintenance. It became Enwesa Operaciones in 1997.

In 2013, Enwesa joined the Cantabria Nuclear Industry Cluster (CINC) with several other companies in the nuclear sector, led by ENSA, with the University of Cantabria and the Technological Centre for Components, to take advantage of the great opportunities in the industry and try to obtain synergies that enhance the activity.

In 2014, ENWESA’s french branch was set up to better serve projects in nuclear power plants in France and provide better customer service.