The 50 most powerful nuclear reactors in operation in 2026

The 50 nuclear reactors with the most net capacity among the 447 operating today.

The most powerful nuclear reactor in operation is Taishan 1-1, in China, with 1,660 MWe net. By country, the list is dominated by France (25), United States (8) and South Korea (4). By design, the most frequent are P4 REP 1300 (20), APR-1400 (8) and N4 REP 1450 (4).

#	Unit	Country	Type	Model	MWe	Grid connection
1	Taishan 1-1	China	PWR	EPR-1750	1,660	2018
2	Taishan 1-2	China	PWR	EPR-1750	1,660	2019
3	Flamanville 3	France	PWR	EPR	1,630	2024
4	Olkiluoto 3	Finland	PWR	EPR	1,575	2022
5	Shidao Bay 2-1	China	PWR	CAP1400	1,534	2024
6	Chooz B-1	France	PWR	N4 REP 1450	1,500	1996
7	Chooz B-2	France	PWR	N4 REP 1450	1,500	1997
8	Civaux 1	France	PWR	N4 REP 1450	1,495	1997
9	Civaux 2	France	PWR	N4 REP 1450	1,495	1999
10	Shin-Hanul 1	South Korea	PWR	APR-1400	1,429	2022
11	Shin-Hanul 2	South Korea	PWR	APR-1400	1,416	2023
12	Grand Gulf 1	United States	BWR	BWR-6 (Mark 3)	1,401	1984
13	Oskarshamn 3	Sweden	BWR	ASEA-IV, BWR-3000	1,400	1985
14	Saeul 1	South Korea	PWR	APR-1400	1,392	2016
15	Saeul 2	South Korea	PWR	APR-1400	1,392	2019
16	Higashidori (Tepco) 1	Japan	BWR	BWR-5	1,385	2005
17	Barakah 1	United Arab Emirates	PWR	APR-1400	1,337	2020
18	Barakah 2	United Arab Emirates	PWR	APR-1400	1,337	2021
19	Barakah 3	United Arab Emirates	PWR	APR-1400	1,337	2022
20	Barakah 4	United Arab Emirates	PWR	APR-1400	1,337	2024
21	St. Alban 1	France	PWR	P4 REP 1300	1,335	1985
22	St. Alban 2	France	PWR	P4 REP 1300	1,335	1986
23	Peach Bottom 3	United States	BWR	BWR-4 (Mark 1)	1,331	1974
24	Flamanville 1	France	PWR	P4 REP 1300	1,330	1985
25	Flamanville 2	France	PWR	P4 REP 1300	1,330	1986
26	Paluel 1	France	PWR	P4 REP 1300	1,330	1984
27	Paluel 2	France	PWR	P4 REP 1300	1,330	1984
28	Paluel 3	France	PWR	P4 REP 1300	1,330	1985
29	Paluel 4	France	PWR	P4 REP 1300	1,330	1986
30	Penly 1	France	PWR	P4 REP 1300	1,330	1990
31	Penly 2	France	PWR	P4 REP 1300	1,330	1992
32	Hamaoka 5	Japan	BWR	ABWR	1,325	2004
33	Kashiwazaki Kariwa 6	Japan	BWR	ABWR	1,315	1996
34	Kashiwazaki Kariwa 7	Japan	BWR	ABWR	1,315	1996
35	Palo Verde 2	United States	PWR	CE80 2-loop (DRY)	1,314	1986
36	Palo Verde 3	United States	PWR	CE80 2-loop (DRY)	1,312	1987
37	Palo Verde 1	United States	PWR	CE80 2-loop (DRY)	1,311	1985
38	Belleville 1	France	PWR	P4 REP 1300	1,310	1987
39	Belleville 2	France	PWR	P4 REP 1300	1,310	1988
40	Golfech 1	France	PWR	P4 REP 1300	1,310	1990
41	Golfech 2	France	PWR	P4 REP 1300	1,310	1993
42	Nogent 1	France	PWR	P4 REP 1300	1,310	1987
43	Nogent 2	France	PWR	P4 REP 1300	1,310	1988
44	Cattenom 1	France	PWR	P4 REP 1300	1,300	1986
45	Cattenom 2	France	PWR	P4 REP 1300	1,300	1987
46	Cattenom 3	France	PWR	P4 REP 1300	1,300	1990
47	Cattenom 4	France	PWR	P4 REP 1300	1,300	1991
48	Peach Bottom 2	United States	BWR	BWR-4 (Mark 1)	1,300	1974
49	South Texas 1	United States	PWR	WH 4-loop (DRY)	1,280	1988
50	South Texas 2	United States	PWR	WH 4-loop (DRY)	1,280	1989

Data: Global Energy Monitor (CC BY 4.0), IAEA PRIS 2025, Wikipedia (CC BY-SA), Wikidata and Wikimedia Commons. Capacities in net MWe unless stated.

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