Kozloduy
Reactor Data
Reactor Units
Every power reactor at this site as listed in the IAEA Power Reactor Information System (PRIS): reactor type and model, net electrical capacity, grid connection and commercial operation dates, and current status.
6 units: 2 operational, 4 permanent shutdown.
Net capacity in service: 2,006 MWe.
| Unit | Type | Model | Net MWe | Construction | Grid | Commercial Op | Shutdown | Status |
|---|---|---|---|---|---|---|---|---|
| Kozloduy 1 | PWR | VVER V-230 | 408 | 1970-04-01 | 1974-07-24 | 1974-10-28 | 2002-12-31 | Permanent Shutdown |
| Kozloduy 2 | PWR | VVER V-230 | 408 | 1970-04-01 | 1975-08-24 | 1975-11-10 | 2002-12-31 | Permanent Shutdown |
| Kozloduy 3 | PWR | VVER V-230 | 408 | 1973-10-01 | 1980-12-17 | 1981-01-20 | 2006-12-31 | Permanent Shutdown |
| Kozloduy 4 | PWR | VVER V-230 | 408 | 1973-10-01 | 1982-05-17 | 1982-06-20 | 2006-12-31 | Permanent Shutdown |
| Kozloduy 5 | PWR | VVER V-320 | 1,003 | 1980-07-09 | 1987-11-29 | 1988-12-23 | Operational | |
| Kozloduy 6 | PWR | VVER V-320 | 1,003 | 1982-04-01 | 1991-08-02 | 1993-12-30 | Operational |
Capacity, milestones and suppliers
| Unit | Design MWe | Gross MWe | Thermal MWt | First Criticality | Reactor Supplier | Turbine Supplier | Notes |
|---|---|---|---|---|---|---|---|
| Kozloduy 1 | 408 | 440 | 1,375 | 1974-06-30 | ATOMENERGOEXPORT | ATOMENERGOEXPORT | Decommissioning from 2010-01-01; Decommissioned 2032-12-31 |
| Kozloduy 2 | 408 | 440 | 1,375 | 1975-08-22 | ATOMENERGOEXPORT | ATOMENERGOEXPORT | Decommissioned 2032-12-31 |
| Kozloduy 3 | 408 | 440 | 1,375 | 1980-12-04 | ATOMENERGOEXPORT | ATOMENERGOEXPORT | Decommissioning from 2012-01-01; Decommissioned 2032-12-31 |
| Kozloduy 4 | 408 | 440 | 1,375 | 1982-04-25 | ATOMENERGOEXPORT | ATOMENERGOEXPORT | Decommissioning from 2012-01-01; Decommissioned 2032-12-31 |
| Kozloduy 5 | 953 | 1,040 | 3,120 | 1987-11-05 | ATOMENERGOEXPORT | ATOMENERGOEXPORT | |
| Kozloduy 6 | 953 | 1,040 | 3,120 | 1991-05-29 | ATOMENERGOEXPORT | ATOMENERGOEXPORT |
Lifetime performance, through 2025
| Unit | Electricity Supplied | Load Factor | Energy Availability | Operating Factor |
|---|---|---|---|---|
| Kozloduy 1 | 61.1 TWh | 60.1% | 66.9% | 73.0% |
| Kozloduy 2 | 62.8 TWh | 64.4% | 71.4% | 79.1% |
| Kozloduy 3 | 62.8 TWh | 67.4% | 75.6% | 81.4% |
| Kozloduy 4 | 61.0 TWh | 69.2% | 75.2% | 82.6% |
| Kozloduy 5 | 219.8 TWh | 69.5% | 74.6% | 76.9% |
| Kozloduy 6 | 204.7 TWh | 75.0% | 79.3% | 81.6% |
Operator: Kozloduy Npp ,lc
Owner: State Enterprise “Radio Active Waste”; Bulgarian Energy Holding
Source: IAEA Power Reactor Information System (PRIS), as of 2026-11-02.
Fuel Cycle Facilities
Fuel cycle plants at this site, as listed in the IAEA Nuclear Fuel Cycle Facilities Database: what each plant does, its scale and design capacity, the years it operated, its current status and who operates it.
2 facilities: 2 in operation.
| Facility | Type | Scale | Design Capacity | Operated | Status | Operator |
|---|---|---|---|---|---|---|
| Kozloduy NPP Site - Wet Storage | AFR Wet Spent Fuel Storage (Pool) | Commercial | 600 t HM | 2004– | In Operation | Kozloduy NPP |
| Kozloduy NPP Site - Dry Storage | AFR Dry Spent Fuel Storage | Commercial | 300 t HM | 2012– | In Operation | Kozloduy NPP |
Source: IAEA Nuclear Fuel Cycle Facilities Database (NFCFDB), as of 2026-10-13.
Working Here
Per Diem Rates FY 2026
Per diem covers lodging and meals & incidental expenses (M&IE) for government and contractor travel near this facility. Rates are from the U.S. State Department foreign per diem tables for FY 2026.
$227
Lodging/Night
$192
M&IE/Day
$419
Total/Day
Bulgaria: rate for locations the State Department does not list separately
U.S. Department of State foreign per diem, for U.S. government and contractor travel.
Photos
Photos of this facility from the NukeWorker photo gallery. Click the header or any photo to browse the full album.
Facility Map
Interactive satellite map showing the facility's geographic location. Marker color indicates current status: green for online, red for offline, orange for reduced power. Click the header to open in Google Maps satellite view.
43.7428, 23.7756
Location & Contact
Physical address, phone number, and website for this facility. Use the directions link to get driving directions via Google Maps.
Plant Facts
About This Site
Written by NukeWorker from public records: facts that do not change. Operator, status and capacity come from the live data elsewhere on this page. Sources: Wikipedia: Kozloduy Nuclear Power Plant.
Kozloduy is a nuclear power plant on the Danube river at the town of Kozloduy, Vratsa Province, in northwestern Bulgaria, close to the Romanian border.
Read more
Construction began in 1970, with work on the first reactor starting on 6 April 1970. Units 1 to 4 are VVER-440 (V-230) pressurized water reactors, and Units 5 and 6 are VVER-1000 (V-320) units. They were connected to the grid on 24 July 1974, 24 August 1975, 17 December 1980, 17 May 1982, 29 November 1987 and 2 August 1991. Units 1 and 2 were shut down on 31 December 2002, and Units 3 and 4 on 31 December 2006, under agreements made ahead of Bulgaria joining the European Union.