Spanish nuclear plants undergo preventive maintenance


Electrical Commissioning In Industrial Power Systems

Our customized live online or in‑person group training can be delivered to your staff at your location.

  • Live Online
  • 12 hours Instructor-led
  • Group Training Available
Regular Price:
$599
Coupon Price:
$499
Reserve Your Seat Today
Maintenance outages have put 5,871 megawatts (MW) of nuclear capacity offline in Spain. The 1,028-MW Asco I, 2,729-MW Almaraz II and 1,087-MW Vandellos II nuclear power plants are offline for refueling and preventive maintenance.

On May 26, the 1,027-MW Asco II plant was forced offline after possible damage was discovered on safety valves. After a 36-hour maintenance outage, the plant was reconnected to the grid.

The valves were reported to be working properly.

In March, the Vandellos II plant was taken offline for its 16th annual outage. In addition to the regular tasks performed during refueling maintenance, a new refrigeration system will be installed and a weld overlay examination will be performed. Once finished, the station will start an 18-month operating cycle. The plant is operated by Asociacion Nuclear Asco-Vandellos and owned by Spanish power companies Endesa (72%) and Iberdrola (28%). The plant was inaugurated in March 1988 and is equipped with a pressurized water reactor supplied by Westinghouse Corporation.

Spain has five other nuclear power stations in operation: the 1,381-MW Santa Maria de Garona, 3,031-MW Trillo, 3,237-MW Confrentes, 1,027-MW Asco II and 2,729-MW Almaraz.

The Asco II plant began operation in March 1986 and is equipped with a pressurized water reactor supplied by Westinghouse and three Siemens AG steam generators. In February 2009, the plant was taken offline for refueling and preventive maintenance. The next scheduled outage is expected to take place in August 2010.

Related News

Grid coordination opens road for electric vehicle flexibility

Smart EV Charging orchestrates vehicle-to-grid (V2G), demand response, and fast charging to balance the power…
View more

Solar Plus Battery Storage Cheaper Than Conventional Power in Germany

Germany Solar-Plus-Storage Cost Parity signals grid parity as solar power with battery storage undercuts conventional…
View more

B.C. government freezes provincial electricity rates

BC Hydro Rate Freeze delivers immediate relief on electricity rates in British Columbia, reversing a…
View more

Canada's Ambitious Electric Vehicle Goals

Canada 2035 Gasoline Car Ban accelerates EV adoption, zero-emission transport, and climate action, with charging…
View more

Wyoming wind boost for US utility

Black Hills Energy Corriedale Wind Farm Expansion earns regulatory approval in Wyoming, boosting capacity to…
View more

Africa's Electricity Unlikely To Go Green This Decade

Africa 2030 Energy Mix Forecast finds electricity generation doubling, with fossil fuels dominant, non-hydro renewables…
View more

Sign Up for Electricity Forum’s Newsletter

Stay informed with our FREE Newsletter — get the latest news, breakthrough technologies, and expert insights, delivered straight to your inbox.

Electricity Today T&D Magazine Subscribe for FREE

Stay informed with the latest T&D policies and technologies.
  • Timely insights from industry experts
  • Practical solutions T&D engineers
  • Free access to every issue

Download the 2026 Electrical Training Catalog

Explore 50+ live, expert-led electrical training courses –

  • Interactive
  • Flexible
  • CEU-cerified