Global largest nuclear power reactors 2021, by gross capacity

The largest nuclear reactor worldwide based on gross capacity was Taishan, in China, with gross capacity of 1,750 megawatts as of December 31, 2021. Furthermore, two out of the three leading nuclear power reactors were located in France. These were Civaux and Chooz, which had a gross capacity of 1,561 and 1,560 megawatts, respectively. All of these reactors had an additional identical reactor, with the same gross capacity also under operation. In that same year, there were a total of 437 operational nuclear reactors and ten nuclear reactors under construction across the globe.