Nuclear reactors supplied by Westinghouse

Westinghouse is recorded as the nuclear steam supply system (NSSS) supplier of 90 units in 12 countries, per the IAEA PRIS register: 70 operating with 69,525 MWe net and 20 shut down.

Origin of the commercial pressurized water reactor; its 2-, 3- and 4-loop designs and the AP1000 were built on four continents. By country: United States (59), Spain (6) and South Korea (6). By technology: 89 PWR and 1 PHWR. The first unit was connected in 1957 and the most recent in 2024. The most powerful unit in operation is South Texas 1, in the United States, with 1,280 MWe. 20 units have been permanently shut down.

PRIS supplier codes: WH, WH/MHI, EL/WEST · Reference · Names per IAEA, Nuclear Power Reactors in the World 2025, table 25

Units with a Westinghouse nuclear steam supply system

Unit	Country	Type	Model	MWe	Grid connection	Status
Shippingport	United States	PWR	WH	60	1957	Shut down
Yankee Rowe	United States	PWR	WH (DRY)	167	1960	Shut down
BR3 3	Belgium	PWR	—	10	1962	Shut down
Carolinas-Virginia Tube Reactor	United States	PHWR	—	17	1963	Shut down
Enrico Fermi	Italy	PWR	WH 4-loop	260	1964	Shut down
Connecticut Yankee	United States	PWR	WH (DRY)	560	1967	Shut down
San Onofre 1	United States	PWR	WH (DRY)	436	1967	Shut down
Jose Cabrera 1	Spain	PWR	WH 1 loop	141	1968	Shut down
Beznau 1	Switzerland	PWR	WH 2-loops	365	1969	Operating
Robert Emmett Ginna	United States	PWR	WH 2-loop (DRY)	560	1969	Operating
Mihama 1	Japan	PWR	Mitsubishi (2-loop)	320	1970	Shut down
H. B. Robinson 2	United States	PWR	WH 3LP (DRYAMB)	741	1970	Operating
Point Beach 1	United States	PWR	WH 2-loop (DRY)	591	1970	Operating
Beznau 2	Switzerland	PWR	WH 2-loops	365	1971	Operating
Point Beach 2	United States	PWR	WH 2-loop (DRY)	591	1972	Operating
Surry 1	United States	PWR	WH 3-loop (DRY)	838	1972	Operating
Turkey Point nuclear power station 3	United States	PWR	WH 3-Loop (DRY)	837	1972	Operating
Indian Point 2	United States	PWR	WH 4-loop (DRY)	998	1973	Shut down
Prairie Island 1	United States	PWR	WH 2-loop (DRY)	522	1973	Operating
Surry 2	United States	PWR	WH 3-loop (DRY)	838	1973	Operating
Turkey Point nuclear power station 4	United States	PWR	WH 3-Loop (DRY)	821	1973	Operating
Zion 1	United States	PWR	WH (DRY)	1,040	1973	Shut down
Zion 2	United States	PWR	WH (DRY)	1,040	1973	Shut down
Takahama 1	Japan	PWR	Mitsubishi (3-loop)	780	1974	Operating
Ringhals 2	Sweden	PWR	WH 3-loops	852	1974	Shut down
Kewaunee	United States	PWR	WH 2-loop (DRY)	566	1974	Shut down
Prairie Island 2	United States	PWR	WH 2-loop (DRY)	519	1974	Operating
Donald C Cook 1	United States	PWR	WH 4-Loop (ICECOND)	1,030	1975	Operating
Trojan	United States	PWR	WH (DRY)	1,095	1975	Shut down
Beaver Valley 1	United States	PWR	WH 3-loop (DRY)	908	1976	Operating
Indian Point 3	United States	PWR	WH 4-loop (DRY)	1,030	1976	Shut down
Salem 1	United States	PWR	WH 4-loop (DRY)	1,169	1976	Operating
Ohi 1	Japan	PWR	W (4-loop)	1,120	1977	Shut down
Kori 1	South Korea	PWR	WH 60	576	1977	Shut down
Joseph M Farley 1	United States	PWR	WH 3-Loop (DRY)	874	1977	Operating
Ohi 2	Japan	PWR	Westinghouse (4-loop)	1,120	1978	Shut down
Donald C Cook 2	United States	PWR	WH 4-Loop (ICECOND)	1,168	1978	Operating
North Anna 1	United States	PWR	WH 3-Loop (DRY)	948	1978	Operating
Ringhals 3	Sweden	PWR	WH 3-loops	1,081	1980	Operating
North Anna 2	United States	PWR	WH 3-Loop (DRY)	944	1980	Operating
Sequoyah 1	United States	PWR	WH 4-Loop (ICECOND)	1,152	1980	Operating
Krško 1	Slovenia	PWR	WH 2 loops	696	1981	Operating
Almaraz 1	Spain	PWR	WH 3 loops	1,011	1981	Operating
Joseph M Farley 2	United States	PWR	WH 3-Loop (DRY)	883	1981	Operating
McGuire 1	United States	PWR	WH 4-Loop (ICECOND)	1,158	1981	Operating
Salem 2	United States	PWR	WH 4-loop (DRY)	1,158	1981	Operating
Sequoyah 2	United States	PWR	WH 4-Loop (ICECOND)	1,139	1981	Operating
Angra 1	Brazil	PWR	WH 2 loops	609	1982	Operating
Ringhals 4	Sweden	PWR	WH 3-loops	1,130	1982	Operating
Virgil C Summer 1	United States	PWR	WH 3-Loop (DRY)	973	1982	Operating
Kori 2	South Korea	PWR	WH F	640	1983	Operating
Almaraz 2	Spain	PWR	WH 3 loops	1,006	1983	Operating
Ascó 1	Spain	PWR	WH 3 loops	995	1983	Operating
McGuire 2	United States	PWR	WH 4-Loop (ICECOND)	1,158	1983	Operating
Maanshan 1	Taiwan	PWR	WH 312 3-loop	936	1984	Shut down
Callaway 1	United States	PWR	WH 4-loop (DRY)	1,215	1984	Operating
Diablo Canyon 1	United States	PWR	WH 4-Loop (DRY)	1,138	1984	Operating
Kori 3	South Korea	PWR	WH F	996	1985	Operating
Kori 4	South Korea	PWR	WH F	1,001	1985	Operating
Ascó 2	Spain	PWR	WH-3 loops	997	1985	Operating
Maanshan 2	Taiwan	PWR	WH 312 3-loop	938	1985	Operating
Byron 1	United States	PWR	WH 4-loop (DRY)	1,164	1985	Operating
Catawba 1	United States	PWR	WH 4-loop (ICECOND)	1,160	1985	Operating
Diablo Canyon 2	United States	PWR	WH 4-Loop (DRY)	1,118	1985	Operating
Wolf Creek	United States	PWR	WH 4-Loop (DRY)	1,200	1985	Operating
Hanbit 1	South Korea	PWR	WH F	965	1986	Operating
Hanbit 2	South Korea	PWR	WH F	952	1986	Operating
Catawba 2	United States	PWR	WH 4-loop (ICECOND)	1,150	1986	Operating
Millstone 3	United States	PWR	WH 4-Loop (DRY)	1,210	1986	Operating
Vandellos 2	Spain	PWR	WH 3 loops	1,047	1987	Operating
Alvin W Vogtle 1	United States	PWR	WH 4-Loop (DRY)	1,150	1987	Operating
Beaver Valley 2	United States	PWR	WH 3-loop (DRY)	905	1987	Operating
Braidwood 1	United States	PWR	WH 4-loop (DRY)	1,194	1987	Operating
Byron 2	United States	PWR	WH 4-loop (DRY)	1,136	1987	Operating
Shearon Harris 1	United States	PWR	WH 3-Loop (DRY)	964	1987	Operating
Braidwood 2	United States	PWR	WH 4-loop (DRY)	1,160	1988	Operating
South Texas 1	United States	PWR	WH 4-loop (DRY)	1,280	1988	Operating
Alvin W Vogtle 2	United States	PWR	WH 4-Loop (DRY)	1,152	1989	Operating
South Texas 2	United States	PWR	WH 4-loop (DRY)	1,280	1989	Operating
Comanche Peak 1	United States	PWR	WH 4-loop (DRY)	1,205	1990	Operating
Seabrook 1	United States	PWR	WH 4-Loop (DRY)	1,246	1990	Operating
Comanche Peak 2	United States	PWR	WH 4-loop (DRY)	1,195	1993	Operating
Watts Bar 1	United States	PWR	WH 4-Loop (ICECOND)	1,157	1996	Operating
Watts Bar 2	United States	PWR	WH 4-Loop (ICECOND)	1,164	2016	Operating
Haiyang 1-1	China	PWR	AP-1000	1,170	2018	Operating
Haiyang 1-2	China	PWR	AP-1000	1,170	2018	Operating
Sanmen 1-1	China	PWR	AP-1000	1,157	2018	Operating
Sanmen 1-2	China	PWR	AP-1000	1,157	2018	Operating
Alvin W Vogtle 3	United States	PWR	AP-1000	1,117	2023	Operating
Alvin W Vogtle 4	United States	PWR	AP-1000	1,117	2024	Operating

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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