Paks nuclear power plant
Paks nuclear power plant is a nuclear power station in Hungary with 4 operating units totalling 2,027 MW gross. The site has 6 units on record in total.
Units
| Unit | Status | Type | Model | Gross MW | Online |
|---|---|---|---|---|---|
| Unit 1 | PWR | VVER V-213 | 509 | 1983 | |
| Unit 2 | PWR | VVER V-213 | 506 | 1984 | |
| Unit 3 | PWR | VVER V-213 | 506 | 1986 | |
| Unit 4 | PWR | VVER V-213 | 506 | 1987 | |
| Unit 5 | Under construction | PWR | VVER V-527 | 1,265 | 2032 |
| Unit 6 | Under construction | PWR | VVER V-527 | 1,265 | 2032 |
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.
Paks nuclear power plant 1
| Reactor type | Pressurised water reactor (PWR) |
|---|---|
| Model | VVER V-213 |
| Size class | Large |
| Gross capacity | 509MW |
| Net capacity | 479MW |
| Thermal output | 1,485MWt |
| Enrichment | 3–5% U-235 |
| NSSS vendor | Rosatom |
| Owner | MVM Hungarian Electricity Ltd100% |
| Operator | MVM Paks Nuclear Power Plant |
| Construction start | 1 Aug 1974 |
|---|---|
| First criticality | 14 Dec 1982 |
| Grid connection | 28 Dec 1982 |
| Commercial operation | 10 Aug 1983 |
Paks nuclear power plant 2
| Reactor type | Pressurised water reactor (PWR) |
|---|---|
| Model | VVER V-213 |
| Size class | Large |
| Gross capacity | 506MW |
| Net capacity | 479MW |
| Thermal output | 1,485MWt |
| Enrichment | 3–5% U-235 |
| NSSS vendor | Rosatom |
| Owner | MVM Hungarian Electricity Ltd100% |
| Operator | MVM Paks Nuclear Power Plant |
| Construction start | 1 Aug 1974 |
|---|---|
| First criticality | 26 Aug 1984 |
| Grid connection | 6 Sep 1984 |
| Commercial operation | 14 Nov 1984 |
Accident on record: Paks fuel cleaning accident, 2003-04-10, INES level 3, serious incident.
Paks nuclear power plant 3
| Reactor type | Pressurised water reactor (PWR) |
|---|---|
| Model | VVER V-213 |
| Size class | Large |
| Gross capacity | 506MW |
| Net capacity | 479MW |
| Thermal output | 1,485MWt |
| Enrichment | 3–5% U-235 |
| NSSS vendor | Rosatom |
| Owner | MVM Hungarian Electricity Ltd100% |
| Operator | MVM Paks Nuclear Power Plant |
| Construction start | 1 Oct 1979 |
|---|---|
| First criticality | 15 Sep 1986 |
| Grid connection | 28 Sep 1986 |
| Commercial operation | 1 Dec 1986 |
Paks nuclear power plant 4
| Reactor type | Pressurised water reactor (PWR) |
|---|---|
| Model | VVER V-213 |
| Size class | Large |
| Gross capacity | 506MW |
| Net capacity | 479MW |
| Thermal output | 1,485MWt |
| Enrichment | 3–5% U-235 |
| NSSS vendor | Rosatom |
| Owner | MVM Hungarian Electricity Ltd100% |
| Operator | MVM Paks Nuclear Power Plant |
| Construction start | 1 Oct 1979 |
|---|---|
| First criticality | 9 Aug 1987 |
| Grid connection | 16 Aug 1987 |
| Commercial operation | 1 Nov 1987 |
Paks nuclear power plant 5 Under construction
| Reactor type | Pressurised water reactor (PWR) |
|---|---|
| Model | VVER V-527 |
| Size class | Large |
| Gross capacity | 1,265MW |
| Net capacity | not disclosed |
| Thermal output | 3,200MWt |
| Enrichment | 3–5% U-235 |
| NSSS vendor | Rosatom |
| Owner | MVM Hungarian Electricity Ltd100% |
| Operator | MVM Paks Nuclear Power Plant |
| Construction start | 5 Feb 2026 |
|---|---|
| Commercial operation | 1 Jan 2032 |
Paks nuclear power plant 6 Under construction
| Reactor type | Pressurised water reactor (PWR) |
|---|---|
| Model | VVER V-527 |
| Size class | Large |
| Gross capacity | 1,265MW |
| Net capacity | not disclosed |
| Thermal output | 3,200MWt |
| Enrichment | 3–5% U-235 |
| NSSS vendor | Rosatom |
| Owner | MVM Hungarian Electricity Ltd100% |
| Operator | MVM Paks Nuclear Power Plant |
| Construction start | 5 Feb 2026 |
|---|---|
| Commercial operation | 1 Jan 2032 |
Paks nuclear power plant in context
Paks nuclear power plant is the only operating nuclear site in Hungary on record, so it holds all of the country's operating capacity, and ranks 86th of 172 operating sites worldwide by gross capacity.
Its operating units started up between 1983 and 1987; the median unit is 41.0 years old, the same as the median in Hungary.
The 4 units with both construction and grid dates on record took 7.0 to 10.1 years (median 8.1) 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 Mochovce nuclear power plant (189 km), Bohunice nuclear power plant (231 km) and Krško nuclear power plant (266 km).
4 operating units are rated differently now from their design net capacities: Unit 1 +17.4%, Unit 2 +16.8%, Unit 3 +16.8% and Unit 4 +16.8%.
Build time by unit
| Unit | Construction start | Grid connection | Years | Fleet median, same decade |
|---|---|---|---|---|
| Unit 1 | 1974 | 1982 | 8.4 | 7.3 (1980s) |
| Unit 2 | 1974 | 1984 | 10.1 | 7.3 (1980s) |
| Unit 3 | 1979 | 1986 | 7.0 | 7.3 (1980s) |
| Unit 4 | 1979 | 1987 | 7.9 | 7.3 (1980s) |
Nearest tracked nuclear sites
| Site | Country | Distance | Operating GW gross |
|---|---|---|---|
| Mochovce nuclear power plant | Slovakia | 189 km | 1.5 |
| Bohunice nuclear power plant | Slovakia | 231 km | 1.0 |
| Krško nuclear power plant | Slovenia | 266 km | 0.7 |
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 Paks 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 | Tolna, Hungary |
|---|---|
| Coordinates | 46.5776, 18.8532 |
| Elevation | about 95 mabove sea level |
| Setting | About 350 km from the sea |
| Region | Eastern Europe |
| Units by status | Operating: 4 Under construction: 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 | MVM Hungarian Electricity Ltd |
|---|---|
| Operators | MVM Paks Nuclear Power Plant |
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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