The world's nuclear fleet in 1974
In 1974, 146 nuclear reactors were operating in 20 countries, 53.7 GWe net, with 161 under construction. 7 of those units are not included in the net capacity because no net figure has been published for them.
Compared with 1973, the operating fleet grew by 17 reactors. 25 reactors were connected to the grid that year, 17,352 MWe, mostly in United States (11), Japan (3) and Russia (3). 4 units were permanently shut down, 407 MWe. Argentina and Bulgaria connected their first nuclear reactor in 1974. The countries with the most operating capacity were United States (30,447 MWe), United Kingdom (4,485 MWe) and Japan (3,697 MWe).
← Previous year, 1973 · Next year, 1975 → · See this year on the map · Today's rankings
Connected to the grid in 1974
| Unit | Country | Type | Model | MWe |
|---|---|---|---|---|
| Atucha 1 |  Argentina | PHWR | Siemens-KWU (PHWR KWU) | 335 |
| Doel 1 |  Belgium | PWR | Westinghouse 2-loop (WH 2LP) | 445 |
| Kozloduy 1 |  Bulgaria | PWR | VVER-440 (V-230) | 408 |
| Biblis A |  Germany | PWR | unknown | 1,167 |
| Greifswald 2 | Germany | PWR | VVER-440 (V-230) | 408 |
| Fukushima Daiichi 3 |  Japan | BWR | BWR-4 | 760 |
| Hamaoka 1 | Japan | BWR | BWR-4 | 515 |
| Takahama 1 | Japan | PWR | Mitsubishi 3-loop (M 3LP) | 780 |
| Bilibino 1 |  Russia | LWGR | EGP-6 | 11 |
| Bilibino 2 | Russia | LWGR | EGP-6 | 11 |
| Kola 1-2 | Russia | PWR | VVER-440 (V-230) | 411 |
| Oskarshamn 2 |  Sweden | BWR | ASEA-Atom BWR, generation II (AA-II) | 638 |
| Ringhals 1 | Sweden | BWR | ASEA-Atom BWR, generation I (AA-I) | 881 |
| Ringhals 2 | Sweden | PWR | Westinghouse 3-loop (WH 3LP) | 852 |
| Arkansas Nuclear One 1 |  United States | PWR | Babcock & Wilcox lowered-loop (B&W LLP) | 836 |
| Browns Ferry 2 | United States | BWR | GE BWR/4, Mark I containment (BWR-4 (Mark 1)) | 1,200 |
| Cooper | United States | BWR | GE BWR/4, Mark I containment (BWR-4 (Mark 1)) | 769 |
| Duane Arnold 1 | United States | BWR | GE BWR/4, Mark I containment (BWR-4 (Mark 1)) | 601 |
| Edwin I Hatch 1 | United States | BWR | GE BWR/4, Mark I containment (BWR-4 (Mark 1)) | 876 |
| Kewaunee | United States | PWR | Westinghouse 2-loop (WH 2LP) | 566 |
| Oconee 3 | United States | PWR | Babcock & Wilcox lowered-loop (B&W LLP) | 859 |
| Peach Bottom 2 | United States | BWR | GE BWR/4, Mark I containment (BWR-4 (Mark 1)) | 1,300 |
| Peach Bottom 3 | United States | BWR | GE BWR/4, Mark I containment (BWR-4 (Mark 1)) | 1,331 |
| Prairie Island 2 | United States | PWR | Westinghouse 2-loop (WH 2LP) | 519 |
| Rancho Seco 1 | United States | PWR | WH (DRY) | 873 |
Shut down in 1974
| Unit | Country | Type | Model | MWe | Grid connection |
|---|---|---|---|---|---|
| Niederaichbach 1 | Germany | HWGCR | pressure tube reactor | 100 | 1973 |
| Agesta | Sweden | PHWR | R3 | 10 | 1964 |
| Indian Point 1 | United States | PWR | unknown | 257 | 1962 |
| Peach Bottom 1 | United States | HTGR | — | 40 | 1967 |
Countries by operating capacity in 1974
| # | Country | Reactors | MWe | Under construction |
|---|---|---|---|---|
| 1 | United States | 45 | 30,447 | 58 |
| 2 |  United Kingdom | 29 | 4,485 | 11 |
| 3 | Japan | 9 | 3,697 | 14 |
| 4 | Russia | 15 | 2,903 | 10 |
| 5 |  Canada | 7 | 2,538 | 6 |
| 6 |  France | 10 | 2,519 | 8 |
| 7 | Germany | 9 | 1,950 | 14 |
| 8 |  Switzerland | 3 | 1,103 | 2 |
| 9 |  Spain | 3 | 1,067 | 3 |
| 10 |  Italy | 3 | 563 | 1 |
| 11 |  Netherlands | 2 | 537 | — |
| 12 | Sweden | 1 | 473 | 8 |
| 13 |  India | 3 | 434 | 3 |
| 14 | Bulgaria | 1 | 408 | 3 |
| 15 | Argentina | 1 | 335 | 1 |
| 16 |  Slovakia | 1 | 93 | 2 |
| 17 |  Pakistan | 1 | 90 | — |
| 18 |  Kazakhstan | 1 | 52 | — |
| 19 | Belgium | 1 | 10 | 3 |
| 20 |  Armenia | 0 | 0 | 1 |
| 21 |  Brazil | 0 | 0 | 1 |
| 22 |  Finland | 0 | 0 | 3 |
| 23 |  Hungary | 0 | 0 | 2 |
| 24 |  Panama | 1 | 0 | — |
| 25 |  South Korea | 0 | 0 | 1 |
| 26 |  Taiwan | 0 | 0 | 2 |
| 27 |  Ukraine | 0 | 0 | 4 |
Data: Global Energy Monitor (CC BY 4.0), IAEA PRIS 2025, Wikipedia (CC BY-SA), Wikidata and Wikimedia Commons. Capacities in net MWe unless stated.