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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.

Operating2circle area ∝ site capacity Coastlines, borders and lakes: Natural Earth (1:10 million, public domain), which is generalised, so a coastal plant can sit a couple of kilometres off its true shoreline. Site positions: Global Nuclear Power Tracker.
Units on record
6
Operating
4
Operating capacity
2,027MW
Country

Units

UnitStatusTypeModelGross MWOnline
Unit 1 Operating PWR VVER V-213 509 1983
Unit 2 Operating PWR VVER V-213 506 1984
Unit 3 Operating PWR VVER V-213 506 1986
Unit 4 Operating 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 Operating

Reactor typePressurised water reactor (PWR)
ModelVVER V-213
Size classLarge
Gross capacity509MW
Net capacity479MW
Thermal output1,485MWt
Enrichment3–5% U-235
NSSS vendorRosatom
OwnerMVM Hungarian Electricity Ltd100%
OperatorMVM Paks Nuclear Power Plant
Construction start1 Aug 1974
First criticality14 Dec 1982
Grid connection28 Dec 1982
Commercial operation10 Aug 1983

Paks nuclear power plant 2 Operating

Reactor typePressurised water reactor (PWR)
ModelVVER V-213
Size classLarge
Gross capacity506MW
Net capacity479MW
Thermal output1,485MWt
Enrichment3–5% U-235
NSSS vendorRosatom
OwnerMVM Hungarian Electricity Ltd100%
OperatorMVM Paks Nuclear Power Plant
Construction start1 Aug 1974
First criticality26 Aug 1984
Grid connection6 Sep 1984
Commercial operation14 Nov 1984

Accident on record: Paks fuel cleaning accident, 2003-04-10, INES level 3, serious incident.

Paks nuclear power plant 3 Operating

Reactor typePressurised water reactor (PWR)
ModelVVER V-213
Size classLarge
Gross capacity506MW
Net capacity479MW
Thermal output1,485MWt
Enrichment3–5% U-235
NSSS vendorRosatom
OwnerMVM Hungarian Electricity Ltd100%
OperatorMVM Paks Nuclear Power Plant
Construction start1 Oct 1979
First criticality15 Sep 1986
Grid connection28 Sep 1986
Commercial operation1 Dec 1986

Paks nuclear power plant 4 Operating

Reactor typePressurised water reactor (PWR)
ModelVVER V-213
Size classLarge
Gross capacity506MW
Net capacity479MW
Thermal output1,485MWt
Enrichment3–5% U-235
NSSS vendorRosatom
OwnerMVM Hungarian Electricity Ltd100%
OperatorMVM Paks Nuclear Power Plant
Construction start1 Oct 1979
First criticality9 Aug 1987
Grid connection16 Aug 1987
Commercial operation1 Nov 1987

Paks nuclear power plant 5 Under construction

Reactor typePressurised water reactor (PWR)
ModelVVER V-527
Size classLarge
Gross capacity1,265MW
Net capacitynot disclosed
Thermal output3,200MWt
Enrichment3–5% U-235
NSSS vendorRosatom
OwnerMVM Hungarian Electricity Ltd100%
OperatorMVM Paks Nuclear Power Plant
Construction start5 Feb 2026
Commercial operation1 Jan 2032

Paks nuclear power plant 6 Under construction

Reactor typePressurised water reactor (PWR)
ModelVVER V-527
Size classLarge
Gross capacity1,265MW
Net capacitynot disclosed
Thermal output3,200MWt
Enrichment3–5% U-235
NSSS vendorRosatom
OwnerMVM Hungarian Electricity Ltd100%
OperatorMVM Paks Nuclear Power Plant
Construction start5 Feb 2026
Commercial operation1 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

UnitConstruction startGrid connectionYearsFleet median, same decade
Unit 1197419828.47.3 (1980s)
Unit 21974198410.17.3 (1980s)
Unit 3197919867.07.3 (1980s)
Unit 4197919877.97.3 (1980s)

Nearest tracked nuclear sites

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.

Site detail
LocationTolna, Hungary
Coordinates46.5776, 18.8532
Elevationabout 95 mabove sea level
SettingAbout 350 km from the sea
RegionEastern 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 & operators
Owners
MVM Hungarian Electricity Ltd
Operators
MVM Paks Nuclear Power Plant

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Sources

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