Globally, there are about 31 countries in which nuclear power plants are functional. However, a few countries, such as France, Slovakia, Ukraine, Belgium, and Hungary use nuclear energy as the main source for a majority of the country’s electricity supply.
A group of countries including Australia, Austria, Denmark, Italy, Greece, Portugal, Ireland, Latvia, Liechtenstein, Luxembourg, Malaysia, Malta, New Zealand, Norway, and Philippines have no nuclear power stations and they oppose such nuclear energy production.
The following table lists down the countries and the number of nuclear power plants in them −
| Country | Number of reactors | Generated electricity (GWh) | domestic generation share in % |
| Argentina | 3 | 7677.36 | 5.60% |
| Armenia | 1 | 2194.85 | 31.40% |
| Belgium | 7 | 41430.45 | 51.70% |
| Brazil | 2 | 14970.46 | 2.90% |
| Bulgaria | 2 | 15083.45 | 35% |
| Canada | 19 | 95650.19 | 15.60% |
| China Mainland | 36 | 197829.04 | 3.60% |
| Czech Republic | 6 | 22729.87 | 29.40% |
| Finland | 4 | 22280.1 | 33.70% |
| France | 58 | 386452.88 | 72.30% |
| Germany | 8 | 80069.61 | 13.10% |
| Hungary | 4 | 15183.01 | 51.30% |
| India | 22 | 35006.83 | 3.40% |
| Iran | 1 | 5923.97 | 2.10% |
| Japan | 43 | 17537.14 | 2.20% |
| Republic of Korea | 25 | 154306.65 | 30.30% |
| Netherlands | 1 | 3749.81 | 3.40% |
| Mexico | 2 | 10272.29 | 6.20% |
| Pakistan | 4 | 5438.9 | 4.40% |
| Romania | 2 | 10388.2 | 17.10% |
| Russia | 37 | 184054.09 | 17.10% |
| Slovakia | 4 | 13733.35 | 54.10% |
| Slovenia | 1 | 5431.27 | 35.20% |
| South Africa | 2 | 15209.47 | 6.60% |
| Spain | 7 | 56102.44 | 21.40% |
| Sweden | 10 | 60647.4 | 40.00% |
| Switzerland | 5 | 20303.12 | 34.40% |
| Taiwan | 6 | 30461.09 | 13.70% |
| Ukraine | 15 | 76077.79 | 52.30% |
| United Kingdom | 15 | 65148.98 | 20.40% |
| United States | 100 | 804872.94 | 19.70% |
| World total | 452 | 2,476 TWh | 10.9% |
