World's largest nuclear reactors by capacity 2024| ��ƽ��

Leading nuclear power reactors in operation worldwide as of December 2024, by gross capacity (in megawatts)

Characteristic	Gross capacity in megawatts
Taishan* (China)	1,750
Olkiluoto 3 (Finland)	1,660
Civaux* (France)	1,561
Chooz B-2 (France)	1,560
Grand Gulf 1 (United States)	1,500
Saeul 2 (South Korea)	1,491
Saeul 1 (South Korea)	1,488
Shin-Hanul 1 (South Korea)	1,455
Oskarshamn 3 (Sweden)	1,450
Barakah* (United Arab Emirates)	1,417
Palo Verde* (United States)	1,414
Peach Bottom* (United States)	1,412

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Release date

September 2025

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Region

Worldwide

Survey time period

December 31, 2024

Supplementary notes

* This statistic includes one reactor of each power plant, despite some nuclear power plants having more than one reactor with the same capacity, such as:
- Taishan has two identical reactors under operation, Taishan 1 and Taishan 2.
- Civaux has two identical reactors under operation, Civaux 1 and Civaux 2.
- Barakah has three identical reactors under operation, Barakah 1, Barakah 2, and Barakah 3.
- Palo Verde has three identical reactors under operation, Palo Verde 1, Palo Verde 2 and Palo Verde 3.
- Peach Bottom has two identical reactors under operation, Peach Bottom 2 and Peach Bottom 3.

Citation formats

The largest nuclear reactor worldwide based on gross capacity was Taishan, in China, with a gross capacity of 1,750 megawatts as of December 31, 2024. Two out of the four 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.
That year, there were a total of 417 operational nuclear reactors, and six nuclear reactors started construction across the globe in 2023.