Countries with nuclear power

1. 1United States96,952 MWe94 reactors17.4 % of electricity · 2025
2. 2France63,000 MWe57 reactors68.8 % of electricity · 2025
3. 3China60,928 MWe64 reactors · 35 under construction4.6 % of electricity · 2025
4. 4Japan31,679 MWe33 reactors · 2 under construction9.1 % of electricity · 2025
5. 5Russia27,969 MWe34 reactors · 7 under construction18.3 % of electricity · 2025
6. 6South Korea25,609 MWe26 reactors · 4 under construction29.6 % of electricity · 2025
7. 7Ukraine13,107 MWe15 reactors · 2 under construction55.8 % of electricity · 2022
8. 8Canada12,714 MWe17 reactors · 1 under construction13.1 % of electricity · 2025
9. 9India8,047 MWe24 reactors · 8 under construction2.6 % of electricity · 2025
10. 10Spain7,123 MWe7 reactors18.8 % of electricity · 2025
11. 11Sweden7,012 MWe6 reactors27.6 % of electricity · 2025
12. 12United Kingdom5,883 MWe9 reactors · 2 under construction12.5 % of electricity · 2025
13. 13United Arab Emirates5,348 MWe4 reactors22.9 % of electricity · 2024
14. 14Finland4,369 MWe5 reactors39.9 % of electricity · 2025
15. 15Czech Republic3,972 MWe6 reactors42.3 % of electricity · 2025
16. 16Pakistan3,262 MWe6 reactors · 1 under construction12.2 % of electricity · 2025
17. 17Switzerland2,973 MWe4 reactors29.9 % of electricity · 2025
18. 18Slovakia2,306 MWe5 reactors · 1 under construction66.4 % of electricity · 2025
19. 19Belarus2,220 MWe2 reactors36.6 % of electricity · 2025
20. 20Belgium2,056 MWe2 reactors33.1 % of electricity · 2025
21. 21Bulgaria2,006 MWe2 reactors39.1 % of electricity · 2025
22. 22Hungary1,916 MWe4 reactors · 1 under construction40 % of electricity · 2025
23. 23Brazil1,884 MWe2 reactors · 1 under construction2.1 % of electricity · 2025
24. 24South Africa1,854 MWe2 reactors4.2 % of electricity · 2025
25. 25Argentina1,631 MWe3 reactors · 1 under construction7 % of electricity · 2025
26. 26Mexico1,552 MWe2 reactors2.9 % of electricity · 2025
27. 27Romania1,300 MWe2 reactors20.5 % of electricity · 2025
28. 28Iran915 MWe1 reactors · 2 under construction1.9 % of electricity · 2025
29. 29Slovenia696 MWe1 reactors39.3 % of electricity · 2025
30. 30Netherlands482 MWe1 reactors3 % of electricity · 2025
31. 31Armenia416 MWe1 reactors27 % of electricity · 2025
32. 32North Korea5 MWe2 reactors
33. 33Bangladesh2 under constructionno reactors operating
34. 34Egypt4 under constructionno reactors operating
35. 35Philippines0 under constructionno reactors operating
36. 36Türkiye4 under constructionno reactors operating
37. 37Uzbekistan2 under constructionno reactors operating

Net electrical capacity (MWe) of reactors operating in the selected year; bars are relative to the leader. Nuclear share of electricity generation: Our World in Data, Ember and Energy Institute, latest year available.

1. 1United States355 reactors59 operating · 4 under construction7,218 MWt thermal
2. 2Russia134 reactors61 operating · 4 under construction1,068 MWt thermal
3. 3Japan50 reactors26 operating · 4 under construction226 MWt thermal
4. 4United Kingdom49 reactors2 operating · 1 under construction297 MWt thermal
5. 5Germany48 reactors8 operating183 MWt thermal
6. 6France41 reactors3 operating · 2 under construction1,543 MWt thermal
7. 7China30 reactors22 operating · 3 under construction328 MWt thermal
8. 8Italy20 reactors6 operating · 1 under construction59.3 MWt thermal
9. 9Canada19 reactors5 operating262 MWt thermal
10. 10India16 reactors7 operating · 3 under construction348 MWt thermal
11. 11Netherlands8 reactors3 operating48.4 MWt thermal
12. 12South Korea8 reactors4 operating · 2 under construction47.3 MWt thermal
13. 13Argentina8 reactors5 operating · 1 under construction41 MWt thermal
14. 14Iran8 reactors5 operating · 2 under construction35 MWt thermal
15. 15Czech Republic8 reactors4 operating · 1 under construction10 MWt thermal
16. 16Belgium7 reactors3 operating · 1 under construction227 MWt thermal
17. 17Sweden7 reactors1 operating132 MWt thermal
18. 18Pakistan7 reactors6 operating · 1 under construction66.1 MWt thermal
19. 19Switzerland7 reactors2 operating40 MWt thermal
20. 20Brazil7 reactors6 operating · 1 under construction35.1 MWt thermal
21. 21Taiwan6 reactors1 operating42.1 MWt thermal
22. 22Poland6 reactors1 operating40.1 MWt thermal
23. 23Belarus6 reactors3 operating5 MWt thermal
24. 24Kazakhstan5 reactors4 operating41.5 MWt thermal
25. 25Ukraine5 reactors3 operating · 2 under construction30.2 MWt thermal
26. 26Romania5 reactors2 operating16.5 MWt thermal
27. 27Spain5 reactors0 operating · 1 under construction3 MWt thermal
28. 28Australia4 reactors1 operating30.1 MWt thermal
29. 29Norway4 reactors0 operating22.5 MWt thermal
30. 30Denmark4 reactors1 operating15 MWt thermal
31. 31Mexico4 reactors2 operating1 MWt thermal
32. 32Indonesia3 reactors3 operating32.1 MWt thermal
33. 33Algeria3 reactors3 operating16 MWt thermal
34. 34Austria3 reactors1 operating10.3 MWt thermal
35. 35Türkiye3 reactors1 operating6.3 MWt thermal
36. 36Greece3 reactors1 operating5 MWt thermal
37. 37Israel2 reactors2 operating31 MWt thermal
38. 38Egypt2 reactors1 operating24 MWt thermal
39. 39South Africa2 reactors1 operating20 MWt thermal
40. 40Vietnam2 reactors1 operating · 1 under construction15.5 MWt thermal
41. 41Hungary2 reactors2 operating10.1 MWt thermal
42. 42Nigeria2 reactors1 operating · 1 under construction10 MWt thermal
43. 43Libya2 reactors1 operating10 MWt thermal
44. 44Peru2 reactors2 operating10 MWt thermal
45. 45Uzbekistan2 reactors1 operating8 MWt thermal
46. 46Chile2 reactors1 operating7 MWt thermal
47. 47Serbia2 reactors0 operating6.5 MWt thermal
48. 48Iraq2 reactors0 operating5.5 MWt thermal
49. 49Latvia2 reactors0 operating5 MWt thermal
50. 50Jordan2 reactors2 operating5 MWt thermal
51. 51Democratic Republic of the Congo2 reactors0 operating1.1 MWt thermal
52. 52Portugal2 reactors1 operating1 MWt thermal
53. 53Finland2 reactors0 operating250 kWt thermal
54. 54Georgia1 reactor0 operating8 MWt thermal
55. 55North Korea1 reactor1 operating8 MWt thermal
56. 56Mongolia1 reactor0 operating · 1 under construction5 MWt thermal
57. 57Bangladesh1 reactor1 operating3 MWt thermal
58. 58Venezuela1 reactor0 operating3 MWt thermal
59. 59Bulgaria1 reactor0 operating2 MWt thermal
60. 60Morocco1 reactor1 operating2 MWt thermal
61. 61Antarctica1 reactor0 operating1.8 MWt thermal
62. 62Thailand1 reactor1 operating1.3 MWt thermal
63. 63Malaysia1 reactor1 operating1 MWt thermal
64. 64Slovenia1 reactor1 operating250 kWt thermal
65. 65Bolivia1 reactor0 operating · 1 under construction200 kWt thermal
66. 66Tajikistan1 reactor0 operating · 1 under construction50 kWt thermal
67. 67Ghana1 reactor1 operating34 kWt thermal
68. 68Colombia1 reactor1 operating30 kWt thermal
69. 69Saudi Arabia1 reactor0 operating · 1 under construction30 kWt thermal
70. 70Syria1 reactor1 operating30 kWt thermal
71. 71Jamaica1 reactor1 operating20 kWt thermal
72. 72Uruguay1 reactor0 operating10 kWt thermal
73. 73Philippines1 reactor1 operating

Research reactors and critical and subcritical assemblies surveyed by the IAEA (RRDB), by country; bars are relative to the leader. Thermal power summed over those with a known figure.