Fact Sheet

Spent Nuclear Fuel in Spain

Management and Disposal of Spent Nuclear Fuel in Spain


4,975 MTU spent nuclear fuel in storage (2016)
6,679 MTU spent nuclear fuel projected by 2050
1969 First year of commercial nuclear operation
7 operating nuclear power reactors
0 operating research and test reactors
7.57 GW(e) installed nuclear capacity (2016)
4.68% nuclear share of domestic energy production (2018)

Regulator: Nuclear Safety Council
Power Operators: Iberdrola Generacion Nuclear S.A., Centrales Nucleares Almaraz-Trillo A.I.E., Asociacion Nuclear Asco-Vandellos A.I.E.

Nuclear Power stations in Spain (as of 2019)

Management and Disposal of Spent Nuclear Fuel


  • Prior to 1983, an unknown small amount of spent fuel was sent abroad to be reprocessed without waste being returned
  • Reactor fuel is stored temporarily in pools or, at the Trillo, Jose Cabrera and Asco sites, in dry Individualized Temporary Storage onsite
  • Currently, efforts are focused on constructing a centralized storage facility that will operate for 60 years; operational year is unknown
  • The National Organization of Radioactive Waste Management (ENRESA) conducts research into radioactive waste including safety assessment and dismantling


  • Spain acceded to Euratom’s safeguards agreement (INFCIRC/193) in 1989, and the additional protocol entered into force in 2004
  • Spain signed the Joint Convention in 1998 and ratified in 1999
  • Future planning includes final disposal in a deep geological repository as suggested in a Euratom directive, as reprocessing is not considered a policy option and spent fuel is treated as high-level waste
  • Waste management is a public State service overseen by ENRESA, as laid out in the 6th General Radioactive Waste Plan, and waste is owned by the Spanish government after disposal
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