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Largest Nuclear Power Plants in the U.S.

The three largest plants in the U.S. are located in Arizona. See where the others are located and the megawatts of electricity each produces.

Plant Operating utility Capacity
(net MW[e])1
Year
operative
Palo Verde 3, Ariz. Arizona Nuclear Power Project 1,317 1988
Palo Verde 2, Ariz. Arizona Nuclear Power Project 1,314 1986
Palo Verde 1, Ariz. Arizona Nuclear Power Project 1,311 1986
South Texas 1, Tex. STP Nuclear Operating Co. 1,280 1988
South Texas 2, Tex. STP Nuclear Operating Co. 1,280 1989
Grand Gulf 1, Miss. Entergy Nuclear 1,259 1985
Seabrook 1, N.H. North Atlantic Energy Service Corp. 1,245 1990
Perry 1, Ohio FirstEnergy Nuclear Operating Co. 1,245 1987
Comanche Peak 1, Tex. Texas Utilities Electric Co. 1,209 1993
Callaway, Mo. AmerenUE 1,190 1984
Susquehanna 1, Pa. PP&L 1,185 1985
Braidwood 1, Ill. Exelon 1,178 1988
Waterford 3, La. Entergy Nuclear 1,176 1985
Salem 1, N.J. PSEG 1,174 1977
Byron 1, Ill. Exelon 1,164 1985
Hope Creek 1, N.J. PSEG 1,161 1986
Wolf Creek 1, Kans. Wolf Creek Nuclear Operating 1,160 1985
Comanche Peak 2, Tex. Texas Utilities Electric Co. 1,158 1993
Salem 2, N.J. PSEG 1,158 1977
Braidwood 2, Ill. Exelon 1,152 1988
Vogtle 2, Ga. Southern Nuclear Operating Co. 1,152 1989
Vogtle 1, Ga. Southern Nuclear Operating Co. 1,150 1989
Sequoyah 1, Tenn. Tennessee Valley Authority 1,148 1981
Nine Mile Point 2, N.Y. Constellation Nuclear 1,143 1988
Millstone 3, Conn.. Dominion Generation 1,138 1986
Byron 2, Ill. Exelon 1,136 1987
Limerick 2, Penn. Exelon 1,134 1990
Columbia Generating, Wash. Energy Northwest 1,131 1983
Limerick 1, Penn. Exelon 1,130 1986
Catawba 1, S.C. Duke Power Co. 1,129 1985
Catawba 2, S.C. Duke Power Co. 1,129 1986
Sequoyah 2, Tenn. Tennessee Valley Authority 1,126 1982
Watts Bar 1, Tenn. Tennessee Valley Authority 1,123 1996
Diablo Canyon 1, Calif. PG&E 1,122 1985
1. MW[e] = megawatts of electricity.
Source: Nuclear Energy Institute, May 2010 update.

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