Who owns the reactor fleet
Attributing 393 of 405 GW of operating capacity to an owner by stated share, the five largest owners hold 42% of it between them.
Where a reactor has one owner on record, that owner is credited with its full capacity, whether or not a percentage was stated, because there is no one else it could belong to. Where a reactor has several owners, only stakes with a stated percentage are counted here. 26 owner rows on jointly-owned reactors, worth about 11.3 GW, are left out rather than guessed. 11 of those are a claim of 100% ownership on a reactor with other owners listed, which is self-contradictory, so it is treated as not stated rather than as one company owning the whole plant. This is ownership stake, not who operates the plant day to day; see each reactor's own page for the operator.
The largest owners worldwide
| # | Owner | GW gross, attributed | Share of attributed capacity | Countries |
|---|---|---|---|---|
| 1 | Electricité de France SA | 65.7 | 17% | France |
| 2 | Rosatom | 29.8 | 8% | Russia |
| 3 | Korea Hydro & Nuclear Power Co | 27.1 | 7% | South Korea |
| 4 | China National Nuclear Power Co Ltd | 24.9 | 6% | China |
| 5 | Exelon Corp | 18.1 | 5% | United States |
| 6 | SE NNEGC "Energoatom" | 13.8 | 4% | Ukraine |
| 7 | Ontario Power Generation Inc | 12.8 | 3% | Canada |
| 8 | CGNPC Nuclear Power Investment Co Ltd | 8.9 | 2% | China |
| 9 | Tennessee Valley Authority | 8.6 | 2% | United States |
| 10 | China General Nuclear Power Co Ltd | 8.5 | 2% | China |
| 11 | Nuclear Power Corporation Of India Ltd | 8.4 | 2% | India |
| 12 | Georgia Power Co | 6.8 | 2% | United States |
| 13 | Kansai Electric Power Co | 6.6 | 2% | Japan |
| 14 | EDF Energy Ltd | 6.5 | 2% | United Kingdom |
| 15 | Emirates Nuclear Energy Corp | 5.7 | 1% | United Arab Emirates |
| 16 | Duke Energy Corp | 5.1 | 1% | United States |
| 17 | Guangxi Fangchenggang CGN Nuclear Power Industry Investment Co Ltd | 4.5 | 1% | China |
| 18 | PSEG Power Inc | 4.4 | 1% | United States |
| 19 | CGN Ninghe Investment Co Ltd | 4.4 | 1% | China |
| 20 | Arizona Public Service Co | 4.2 | 1% | United States |
| 21 | CEZ AS | 4.2 | 1% | Czech Republic |
| 22 | Kyushu Electric Power Co Inc | 4.1 | 1% | Japan |
| 23 | Dominion Resources Inc | 4.0 | 1% | United States |
| 24 | Florida Power & Light Co | 3.8 | 1% | United States |
| 25 | Progress Energy Carolinas Inc | 3.7 | 1% | United States |
By country
The largest owner in each country, by attributed capacity.
| Country | GW gross, attributed | Owners | Largest owner | Its share |
|---|---|---|---|---|
| United States | 97.8 | 33 | Exelon Corp | 19% |
| France | 65.7 | 1 | Electricité de France SA | 100% |
| China | 64.6 | 12 | China National Nuclear Power Co Ltd | 39% |
| Russia | 29.8 | 1 | Rosatom | 100% |
| South Korea | 27.1 | 1 | Korea Hydro & Nuclear Power Co | 100% |
| Japan | 14.6 | 6 | Kansai Electric Power Co | 45% |
| Ukraine | 13.8 | 1 | SE NNEGC "Energoatom" | 100% |
| Canada | 13.5 | 2 | Ontario Power Generation Inc | 95% |
| India | 8.4 | 1 | Nuclear Power Corporation Of India Ltd | 100% |
| Sweden | 7.2 | 3 | Forsmark Kraftgrupp AB | 48% |
| United Kingdom | 6.5 | 1 | EDF Energy Ltd | 100% |
| United Arab Emirates | 5.7 | 1 | Emirates Nuclear Energy Corp | 100% |
| Finland | 4.6 | 2 | Teollisuuden Voima Oyj | 77% |
| Czech Republic | 4.2 | 1 | CEZ AS | 100% |
| Pakistan | 3.5 | 1 | Pakistan Atomic Energy Commission | 100% |
| Switzerland | 3.1 | 3 | Kernkraftwerk Leibstadt | 41% |
| Slovakia | 2.5 | 1 | Slovenské Elektrárne AŞ | 100% |
| Belarus | 2.4 | 1 | Republican Unitary Enterprise "Belarusian Nuclear Power Plant" | 100% |
| Belgium | 2.2 | 2 | Societes Reunies D'Energie Du Bassin De L'Escaut SA | 50% |
| Spain | 2.1 | 2 | Iberdrola SA | 52% |
| Bulgaria | 2.1 | 1 | Bulgarian Energy Holding EAD | 100% |
| Hungary | 2.0 | 1 | MVM Hungarian Electricity Ltd | 100% |
| Brazil | 2.0 | 1 | Eletrobras Eletronuclear SA | 100% |
| South Africa | 1.9 | 1 | Eskom | 100% |
| Argentina | 1.8 | 1 | Nucleoelectrica Argentina SA | 100% |
| Mexico | 1.6 | 1 | Comision Federal De Electricidad | 100% |
| Iran | 1.0 | 1 | Nuclear Power Production And Development CO Of Iran | 100% |
| Slovenia | 0.7 | 2 | GEN energija doo | 50% |
| Netherlands | 0.5 | 1 | N.V. Elektriciteits-Produktiemaatschappij Zuid-Nederland | 100% |
| Armenia | 0.4 | 1 | Ministry Of Territorial Administration And Infrastructure | 100% |
Sources
- Ownership stakes: Global Nuclear Power Tracker, Global Energy Monitor, August 2026 release , CC BY 4.0 · retrieved 2026-09-06
How these sources are used, including the corrections applied on top of them and what is deliberately left blank · download the underlying data