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Almaraz

Almaraz, nuclear power plant in Spain, operates 2 pressurized water reactors with 2,017 MW net installed capacity and has been in service since 1983.

It is the highest-capacity nuclear plant in Spain. Unit Almaraz 1 has been operating for 43 years, since 1983. Its 2,017 MW net are enough to supply about 6,350,000 households.

Country
Spain
Units
2
Technology
PWR
Net capacity
2,017 MWe
First grid connection
1983
Operator
Centrales Nucleares Almaraz-Trillo
Owner
Iberdrola; Endesa; Gas Natural
Status
Operating
Operating capacity
2,017 MWe
net electrical
Units
2
2 operating
First start-up
1983
Almaraz
Photo: Wikimedia Commons · author and license

Units

UnitTypeModelStatusMWeMWtConstruction startGrid connectionClosureLoad factor
Almaraz 1Pressurized water (PWR)Westinghouse 3-loop (WH 3LP)Operating1,0112,947Jul 3, 1973May 1, 1981—82.0 % (2024)
Almaraz 2Pressurized water (PWR)Westinghouse 3-loop (WH 3LP)Operating1,0062,947Jul 3, 1973Oct 8, 1983—87.7 % (2024)

Data: IAEA PRIS · Wikipedia · updated on Sep 17, 2026

Almaraz 1, a 1,011 MWe PWR (Westinghouse 3-loop (WH 3LP)), started construction in 1973, was connected to the grid in 1981 and is still operating, with a 82% load factor in 2024.

Almaraz 2, a 1,006 MWe PWR (Westinghouse 3-loop (WH 3LP)), started construction in 1973, was connected to the grid in 1983 and is still operating, with a 87.7% load factor in 2024.

Operator: Centrales Nucleares Almaraz-Trillo.

Owner: Iberdrola; Endesa; Gas Natural (Almaraz 1, Almaraz 2).

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