Spreadsheet

Uprates at U.S. nuclear power reactors

Us­ing a little-pub­li­cized prac­tice known as up­rat­ing, the coun­try’s nuc­le­ar power plant fleet has ad­ded the equi­val­ent of five re­act­ors since 1996 without the con­struc­tion of a new plant. An up­rate is achieved by boost­ing the amount of en­ergy an ex­ist­ing plant gen­er­ates. Reg­u­lat­ors say they ex­pect to ap­prove boosts total­ing 3 1/2 more re­act­ors over the next four years.

There are three dif­fer­ent types of up­rates. The most sig­ni­fic­ant meth­od is known as an “ex­ten­ded up­rate.” It is also con­sidered the most likely to pose safety con­cerns. A list of all up­rates, past and planned, is be­low.

Published:
April 20, 2011
   Download: CSV | XLS | JSON
Search:
1/1 per page
Reactor State Operator Type Approval date Percent uprated Megawatts (Thermal)
Clinton No. 1 IL Exelon EXT Apr. 5, 2002 20.0% 579
Nine Mile Point No. 2 NY Constellation Energy Group EXT Pending 15.0% 521
Grand Gulf No. 1 MS Entergy EXT Pending 13.1% 510
Hope Creek No. 1 NJ PSEG EXT May 14, 2008 15.0% 501
Browns Ferry No. 1 AL Tennessee Valley Authority EXT Pending 14.3% 494
Browns Ferry No. 2 AL Tennessee Valley Authority EXT Pending 14.3% 494
Browns Ferry No. 3 AL Tennessee Valley Authority EXT Pending 14.3% 494
Susquehanna No. 1 PA PPL EXT Jan. 30, 2008 13.0% 463
Susquehanna No. 2 PA PPL EXT Jan. 30, 2008 13.0% 463
Quad Cities No. 1 IL Exelon EXT Dec. 21, 2001 17.8% 446
Quad Cities No. 2 IL Exelon EXT Dec. 21, 2001 17.8% 446
Dresden No. 2 IL Exelon EXT Dec. 21, 2001 17.0% 430
Dresden No. 3 IL Exelon EXT Dec. 21, 2001 17.0% 430
Brunswick No. 1 NC Progress Energy EXT May 31, 2002 15.0% 365
Brunswick No. 2 NC Progress Energy EXT May 31, 2002 15.0% 365
Turkey Point No. 3 FL NextEra Energy Resources EXT Pending 15.0% 344
Turkey Point No. 4 FL NextEra Energy Resources EXT Pending 15.0% 344
St. Lucie No. 1 FL NextEra Energy Resources EXT Pending 11.9% 320
St. Lucie No. 2 FL NextEra Energy Resources EXT Pending 11.9% 320
Vermont Yankee VT Entergy EXT Mar. 2, 2006 20.0% 319
Waterford No. 3 LA Entergy EXT Apr. 15, 2005 8.0% 275
Point Beach No. 1 WI NextEra Energy Resources EXT Pending 17.0% 260
Point Beach No. 2 WI NextEra Energy Resources EXT Pending 17.0% 260
R.E. Ginna NY Constellation Energy Group EXT Jul. 11, 2006 16.8% 255
Duane Arnold No. 1 IA NextEra Energy Resources EXT Nov. 6, 2001 15.3% 248
Millstone No. 3 CT Dominion STR Aug. 12, 2008 7.0% 239
Monticello MN Xcel EXT Pending 12.9% 229
Beaver Valley No. 1 PA FirstEnergy EXT Jul. 19, 2006 8.0% 211
Beaver Valley No. 2 PA FirstEnergy EXT Jul. 19, 2006 8.0% 211
Arkansas Nuclear No. 2 AR Entergy EXT Apr. 24, 2002 7.5% 211
Hatch No. 1 GA Southern Co. EXT Oct. 22, 1998 8.0% 205
Hatch No. 2 GA Southern Co. EXT Oct. 22, 1998 8.0% 205
Perry No. 1 OH FirstEnergy STR Jun. 1, 2000 5.0% 178
Seabrook No. 1 NH NextEra Energy Resources STR Feb. 28, 2005 5.2% 176
Braidwood No. 1 IL Exelon STR May 4, 2001 5.0% 170
Braidwood No. 2 IL Exelon STR May 4, 2001 5.0% 170
Byron No. 1 IL Exelon STR May 4, 2001 5.0% 170
Byron No. 2 IL Exelon STR May 4, 2001 5.0% 170
LaSalle No. 1 IL Exelon STR May 9, 2000 5.0% 166
LaSalle No. 2 IL Exelon STR May 9, 2000 5.0% 166
Limerick No. 1 PA Exelon STR Jan. 24, 1996 5.0% 165
Limerick No. 2 PA Exelon STR Feb. 16, 1995 5.0% 165
Peach Bottom No. 2 PA Exelon STR Oct. 18, 1994 5.0% 165
Peach Bottom No. 3 PA Exelon STR Jul. 18, 1995 5.0% 165
Browns Ferry No. 1 AL Tennessee Valley Authority STR Mar. 6, 2007 5.0% 165
Browns Ferry No. 2 AL Tennessee Valley Authority STR Sep. 8, 1998 5.0% 164
Browns Ferry No. 3 AL Tennessee Valley Authority STR Sep. 8, 1998 5.0% 164
Columbia No. 2 WA Energy Northwest STR May 2, 1995 4.9% 163
Callaway No. 1 MO AmerenUE STR Mar. 30, 1988 4.5% 154
Comanche Peak No. 1 TX Energy Future Holdings STR Jun. 27, 2008 4.5% 154
Comanche Peak No. 2 TX Energy Future Holdings STR Jun. 27, 2008 4.5% 154
Vogtle No. 1 GA Southern Co. STR Mar. 22, 1993 4.5% 154
Vogtle No. 2 GA Southern Co. STR Mar. 22, 1993 4.5% 154
Wolf Creek KS Wolf Creek STR Nov. 10, 1993 4.5% 154
Indian Point No. 3 NY Entergy STR Mar. 24, 2005 4.9% 148.6
Susquehanna No. 1 PA PPL STR Feb. 22, 1995 4.5% 148
Susquehanna No. 2 PA PPL STR Apr. 11, 1994 4.5% 148
River Bend No. 1 LA Entergy STR Oct. 6, 2000 5.0% 145
Nine Mile Point No. 2 NY Constellation Energy Group STR Apr. 28, 1995 4.3% 144
Calvert Cliffs No. 1 MD Constellation Energy Group STR Sep. 9, 1977 5.5% 140
Calvert Cliffs No. 2 MD Constellation Energy Group STR Oct. 19, 1977 5.5% 140
St. Lucie No. 1 FL NextEra Energy Resources STR Nov. 23, 1981 5.5% 140
St. Lucie No. 2 FL NextEra Energy Resources STR Mar. 1, 1985 5.5% 140
Millstone No. 2 CT Dominion STR Jun. 25, 1979 5.0% 140
Farley No. 1 AL Southern Co. STR Apr. 29, 1998 5.0% 138
Farley No. 2 AL Southern Co. STR Apr. 29, 1998 5.0% 138
Shearon Harris No. 1 NC Progress Energy STR Oct. 12, 2001 4.5% 138
Enrico Fermi No. 2 MI DTE Energy STR Sep. 9, 1992 4.0% 137
Virgil C. Summer No. 1 SC SCANA STR Apr. 12, 1996 4.5% 125
Brunswick No. 1 NC Progress Energy STR Nov. 1, 1996 5.0% 122
Brunswick No. 2 NC Progress Energy STR Nov. 1, 1996 5.0% 122
Hatch No. 1 GA Southern Co. STR Aug. 31, 1995 5.0% 122
Hatch No. 2 GA Southern Co. STR Aug. 31, 1995 5.0% 122
North Anna No. 1 VA Dominion STR Aug. 25, 1986 4.2% 118
North Anna No. 2 VA Dominion STR Aug. 25, 1986 4.2% 118
Palo Verde No. 1 AZ Pinnacle West STR Nov. 16, 2005 2.9% 114
Palo Verde No. 2 AZ Pinnacle West STR Sep. 29, 2003 2.9% 114
Palo Verde No. 3 AZ Pinnacle West STR Nov. 16, 2005 2.9% 114
Monticello MN Xcel EXT Sep. 16, 1998 6.3% 105
Surry No. 1 VA Dominion STR Aug. 3, 1995 4.3% 105
Surry No. 2 VA Dominion STR Aug. 3, 1995 4.3% 105
Indian Point No. 2 NY Entergy STR Oct. 27, 2004 3.3% 101.6
Turkey Point No. 3 FL NextEra Energy Resources STR Sep. 26, 1996 4.5% 100
Turkey Point No. 4 FL NextEra Energy Resources STR Sep. 26, 1996 4.5% 100
H.B. Robinson No. 2 SC Progress Energy STR Jun. 29, 1979 4.5% 100
Fitzpatrick NY Entergy STR Dec. 6, 1996 4.0% 100
Kewaunee WI Dominion STR Feb. 27, 2004 6.0% 99
Crystal River No. 3 FL Progress Energy STR Jul. 21, 1981 3.8% 92
Fort Calhoun No. 1 NE Omaha Public Power STR Aug. 15, 1980 5.6% 80
Palo Verde No. 1 AZ Pinnacle West STR May 23, 1996 2.0% 76
Palo Verde No. 2 AZ Pinnacle West STR May 23, 1996 2.0% 76
Palo Verde No. 3 AZ Pinnacle West STR May 23, 1996 2.0% 76
Diablo Canyon No. 1 CA Pacific Gas & Electric STR Oct. 26, 2000 2.0% 73
Salem No. 1 NJ PSEG STR Feb. 6, 1986 2.0% 73
Duane Arnold No. 1 IA NextEra Energy Resources STR Mar. 27, 1985 4.1% 65
Grand Gulf No. 1 MS Entergy MES Oct. 10, 2002 1.7% 65
Seabrook No. 1 NH NextEra Energy Resources MES May 22, 2006 1.7% 61
Vogtle No. 1 GA Southern Co. MES Feb. 27, 2008 1.7% 60.6
Vogtle No. 2 GA Southern Co. MES Feb. 27, 2008 1.7% 60.6
Donald Cook No. 2 MI American Electric Power MES May 2, 2003 1.7% 57
LaSalle No. 1 IL Exelon MES Sep. 16, 2010 1.6% 57
LaSalle No. 2 IL Exelon MES Sep. 16, 2010 1.6% 57
Limerick No. 1 PA Exelon MES Apr. 8, 2011 1.6% 57
Limerick No. 2 PA Exelon MES Apr. 8, 2011 1.6% 57
Peach Bottom No. 2 PA Exelon MES Nov. 22, 2002 1.6% 56
Peach Bottom No. 3 PA Exelon MES Nov. 22, 2002 1.6% 56
Donald Cook No. 1 MI American Electric Power MES Dec. 20, 2002 1.7% 54
South Texas No. 1 TX STP MES Apr. 12, 2002 1.4% 53
South Texas No. 2 TX STP MES Apr. 12, 2002 1.4% 53
River Bend No. 1 LA Entergy MES Jan. 31, 2003 1.7% 52
Waterford No. 3 LA Entergy MES Mar. 29, 2002 1.5% 51
Susquehanna No. 1 PA PPL MES Jul. 6, 2001 1.4% 48
Susquehanna No. 2 PA PPL MES Jul. 6, 2001 1.4% 48
Salem No. 1 NJ PSEG MES May 25, 2001 1.4% 48
Salem No. 2 NJ PSEG MES May 25, 2001 1.4% 48
San Onofre No. 2 CA Southern California Edison MES Jul. 6, 2001 1.4% 48
San Onofre No. 3 CA Southern California Edison MES Jul. 6, 2001 1.4% 48
Watts Bar No. 1 TN Tennessee Valley Authority MES Jan. 19, 2001 1.4% 48
North Anna No. 1 VA Dominion MES Oct. 22, 2009 1.6% 47
North Anna No. 2 VA Dominion MES Oct. 22, 2009 1.6% 47
Comanche Peak No. 1 TX Energy Future Holdings MES Oct. 12, 2001 1.4% 47
Hope Creek No. 1 NJ PSEG MES Jul. 30, 2001 1.4% 46
Davis Besse No. 1 OH FirstEnergy MES Jun. 30, 2008 1.6% 45
Sequoyah No. 1 TN Tennessee Valley Authority MES Apr. 30, 2002 1.3% 44
Sequoyah No. 2 TN Tennessee Valley Authority MES Apr. 30, 2002 1.3% 44
Indian Point No. 2 NY Entergy MES May 22, 2003 1.4% 43
Indian Point No. 3 NY Entergy MES Nov. 26, 2002 1.4% 42.4
Surry No. 1 VA Dominion MES Sep. 24, 2010 1.6% 41
Surry No. 2 VA Dominion MES Sep. 24, 2010 1.6% 41
Crystal River No. 3 FL Progress Energy MES Dec. 26, 2007 1.6% 41
Hatch No. 1 GA Southern Co. MES Sep. 23, 2003 1.5% 41
Hatch No. 2 GA Southern Co. MES Sep. 23, 2003 1.5% 41
H.B. Robinson No. 2 SC Progress Energy MES Nov. 5, 2002 1.7% 39
Cooper NE Entergy MES Jun. 30, 2008 1.6% 38
Calvert Cliffs No. 1 MD Constellation Energy Group MES Jul. 22, 2009 1.4% 37
Calvert Cliffs No. 2 MD Constellation Energy Group MES Jul. 22, 2009 1.4% 37
Beaver Valley No. 1 PA FirstEnergy MES Sep. 24, 2001 1.4% 37
Beaver Valley No. 2 PA FirstEnergy MES Sep. 24, 2001 1.4% 37
Palisades MI Entergy MES Jun. 23, 2004 1.4% 35.4
Comanche Peak No. 2 TX Energy Future Holdings MES Sep. 30, 1999 1.0% 34
Three Mile Island No. 1 PA Exelon STR Jul. 26, 1988 1.3% 33
Pilgrim No. 1 MA Entergy MES May 9, 2003 1.5% 30
Prairie Island No. 1 MN Xcel MES Aug. 18, 2010 1.6% 27
Prairie Island No. 2 MN Xcel MES Aug. 18, 2010 1.6% 27
Crystal River No. 3 FL Progress Energy STR Dec. 4, 2002 0.9% 24
Kewaunee WI Dominion MES Jul. 8, 2003 1.4% 23
Point Beach No. 1 WI NextEra Energy Resources MES Nov. 29, 2002 1.4% 21.5
Point Beach No. 2 WI NextEra Energy Resources MES Nov. 29, 2002 1.4% 21.5
Comanche Peak No. 2 TX Energy Future Holdings MES Oct. 12, 2001 0.4% 13