Largest Nuclear Power Plants in the U.S.
Updated June 26, 2019 |
Infoplease Staff
In 2012, a significant power upgrade boosted Grand Gulf 1 in Mississippi to the top of the list as the largest single-unit nuclear power plant in the country and fifth largest in the world. See where the others are located and the megawatts of electricity each produces.
| Plant | Operating utility | Capacity (net MW[e])1 | Year operative |
|---|---|---|---|
| Grand Gulf 1, Miss. | Entergy Nuclear | 1,419 | 1985 |
| Palo Verde 2, Ariz. | Arizona Nuclear Power Project | 1,314 | 1986 |
| Palo Verde 3, Ariz. | Arizona Nuclear Power Project | 1,312 | 1988 |
| 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 |
| Perry 1, Ohio | FirstEnergy Nuclear Operating Co. | 1,256 | 1987 |
| Seabrook 1, N.H. | North Atlantic Energy Service Corp. | 1,246 | 1990 |
| Millstone 3, Conn.. | Dominion Generation | 1,233 | 1986 |
| Comanche Peak 1, Tex. | Texas Utilities Electric Co. | 1,205 | 1993 |
| Susquehanna 1, Pa. | PP&L | 1,260 | 1985 |
| Comanche Peak 2, Tex. | Texas Utilities Electric Co. | 1,195 | 1993 |
| Callaway, Mo. | AmerenUE | 1,190 | 1984 |
| Braidwood 1, Ill. | Exelon | 1,178 | 1988 |
| Hope Creek 1, N.J. | PSEG | 1,174 | 1986 |
| Salem 1, N.J. | PSEG | 1,168 | 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 |
| Waterford 3, La. | Entergy Nuclear | 1,159 | 1985 |
| 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 |
| Sequoyah 1, Tenn. | Tennessee Valley Authority | 1,152 | 1981 |
| Vogtle 1, Ga. | Southern Nuclear Operating Co. | 1,150 | 1989 |
| Limerick 2, Penn. | Exelon | 1,150 | 1990 |
| Limerick 1, Penn. | Exelon | 1,146 | 1986 |
| Nine Mile Point 2, N.Y. | Constellation Nuclear | 1,144 | 1988 |
| La Salle 2, Ill. | Exelon | 1,140 | 1984 |
| La Salle 1, Ill. | Exelon | 1,137 | 1982 |
| Byron 2, Ill. | Exelon | 1,136 | 1987 |
| Columbia Generating, Wash. | Energy Northwest | 1,132 | 1983 |
| 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, April 2014 update.
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