Almaraz nuclear power plant
Almaraz nuclear power plant is a nuclear power station in Spain with 2 operating units totalling 2,093 MW gross. The site has 2 units on record in total.
Units
Unit by unit
Each unit's rating, type and milestone dates as recorded by the Global Nuclear Power Tracker, with any correction we made to it. A dash or "not disclosed" means the source does not give the value.
Almaraz nuclear power plant 1
| Reactor type | Pressurised water reactor (PWR) |
|---|---|
| Model | Westinghouse 3-loop |
| Size class | Large |
| Gross capacity | 1,049MW |
| Net capacity | 1,011MW |
| Thermal output | 2,947MWt |
| Enrichment | 3–5% U-235 |
| NSSS vendor | Westinghouse Electric Company |
| Owner | Gas Natural100% Iberdrola Endesa |
| Operator | Centrales Nucleares Almaraz-Trillo |
| Construction start | 3 Jul 1973 |
|---|---|
| First criticality | 5 Apr 1981 |
| Grid connection | 1 May 1981 |
| Commercial operation | 1 Sep 1983 |
Live status, outage record and fuel chain for Almaraz nuclear power plant 1
Almaraz nuclear power plant 2
| Reactor type | Pressurised water reactor (PWR) |
|---|---|
| Model | Westinghouse 3-loop |
| Size class | Large |
| Gross capacity | 1,044MW |
| Net capacity | 1,006MW |
| Thermal output | 2,947MWt |
| Enrichment | 3–5% U-235 |
| NSSS vendor | Westinghouse Electric Company |
| Owner | Gas Natural100% Iberdrola Endesa |
| Operator | Centrales Nucleares Almaraz-Trillo |
| Construction start | 3 Jul 1973 |
|---|---|
| First criticality | 19 Sep 1983 |
| Grid connection | 8 Oct 1983 |
| Commercial operation | 1 Jul 1984 |
Live status, outage record and fuel chain for Almaraz nuclear power plant 2
Almaraz nuclear power plant in context
By gross operating capacity Almaraz nuclear power plant is the 1st largest of 5 operating nuclear sites in Spain, holding 28% of the country's operating capacity, and ranks 83rd of 172 worldwide.
Its operating units started up between 1983 and 1984; the median unit is 42.5 years old, older than the median of 41.0 in Spain.
The 2 units with both construction and grid dates on record took 7.8 to 10.3 years (median 9.0) from construction start to grid connection; the median across all reactors connected in the 1980s is 7.3 years.
The nearest other tracked nuclear sites are Trillo nuclear power plant (279 km).
2 operating units are rated differently now from their design net capacities: Unit 1 +12.3% and Unit 2 +11.8%.
Build time by unit
| Unit | Construction start | Grid connection | Years | Fleet median, same decade |
|---|---|---|---|---|
| Unit 1 | 1973 | 1981 | 7.8 | 7.3 (1980s) |
| Unit 2 | 1973 | 1983 | 10.3 | 7.3 (1980s) |
Nearest tracked nuclear sites
| Site | Country | Distance | Operating GW gross |
|---|---|---|---|
| Trillo nuclear power plant | Spain | 279 km | 1.1 |
How these are worked out: ranks use gross operating capacity; ages count from the start-up year on record, as on the age page; build times run from construction start to grid connection, as on the build-times page; ratings are the tracker's net and design net capacity, as on the uprates page. Distances are straight-line between exact positions, so a site with only an approximate position gets none. A unit missing a date or a rating is left out of the figure that needs it.
Earthquakes nearby
Loading the latest USGS check…
| Time (UTC) | Mag | Depth | Epicentre | Distance |
|---|
Magnitude 4.0 and above within 200 km of Almaraz nuclear power plant's listed coordinates, past 30 days. This is distance, not shaking: it says nothing about damage or any change in operation. Every plant.
| Location | Extremadura, Spain |
|---|---|
| Coordinates | 39.8070, -5.6986 |
| Elevation | about 270 mabove sea level |
| Setting | About 270 km from the sea |
| Region | Southern Europe |
| Units by status | Operating: 2 |
Elevation is read at the listed coordinates from a 30 m terrain model (SRTM 30 m). Two independent models differ by a median of 6 m across our plants and by up to about 40 m on steep or coastal ground, and a point on a shoreline can read as sea level. Distance to the water is measured to a generalised 1:10 million coastline, so a few kilometres or less is not resolved. This is context, not a design-basis or flood-risk figure.
| Owners | Iberdrola Endesa Gas Natural |
|---|---|
| Operators | Centrales Nucleares Almaraz-Trillo |
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Sources
- Global Nuclear Power Tracker, Global Energy Monitor, August 2026 release , CC BY 4.0 · retrieved 2026-09-06
- GEM.wiki entry (further reading) , CC BY-SA 4.0, linked, not quoted
How these sources are used, including the corrections applied on top of them and what is deliberately left blank · download the underlying data