Midcontinent Independent System Operator, Inc.
Balancing Authority Summary Information
Midcontinent Independent System Operator, Inc. is ranked #2 out of 64 balancing authorities in terms of total annual electricity generation.
| Balancing Authority | Midcontinent Independent System Operator, Inc. |
|---|---|
| States | Arkansas Illinois Indiana Iowa Kentucky Louisiana Michigan Minnesota Mississippi Missouri Montana North Dakota South Dakota Texas Wisconsin |
| Last Update | Oct 2026 |
| Annual Generation | 677.7 TWh |
| Power Plants | 3,095 |
| Utilities | 1,372 |
| Ranked #2 out of 64 in terms of net annual generation | |
| Ranked #2 out of 53 in terms of annual generation from natural gas | |
| Power Plant Types | Natural Gas | 37.1% Coal | 26.2% Wind | 15% Nuclear | 13.8% Solar | 6.1% Water | 1.4% Other Fuel | 0.5% |
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Daily Net Generation for Midcontinent Independent System Operator, Inc. for the past 3 Years
| Plant Name | Utility | Location | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|
| Chicot Solar | Chicot Solar, LLC | Lake Village, AR | 210 GWh | Aug 2020 | Jul 2026 | Solar |
| Chisago Community Solar | Chisago Community Solar | Taylor Falls, MN | 6 GWh | Nov 2016 | Dec 2025 | Solar |
| Chisago Holdco LLC, CSG | Chisago Holdco LLC | Center City, MN | 5 GWh | Apr 2019 | Dec 2025 | Solar |
| Chub Garden Solar | Chub Garden LLC | Northfield, MN | 2 GWh | Feb 2020 | Dec 2025 | Solar |
| CITGO Refinery Powerhouse | CITGO Petroleum Corp | Sulphur, LA | 224 GWh | Dec 1941 | Dec 2025 | Other Gas |
| CC Perry K | Citizens Thermal Energy | Indianapolis, IN | 15 GWh | Dec 1924 | Jul 2026 | Natural Gas |
| D G Hunter | City of Alexandria - (LA) | Alexandria, LA | 91 GWh | Apr 1965 | Dec 2025 | Natural Gas |
| Alexandria | City of Alexandria - (MN) | Alexandria, MN | 51 MWh | Dec 1947 | Dec 2025 | Distillate Fuel Oil |
| Altamont | City of Altamont - (IL) | Altamont, IL | 75 MWh | Dec 2001 | Dec 2025 | Distillate Fuel Oil |
| Ames Electric Services Power Plant | City of Ames - (IA) | Ames, IA | 285 GWh | Apr 1968 | Dec 2025 | Natural Gas : 91.0% Other Biomass Solids : 9.0% |
| Anita | City of Anita - (IA) | Anita, IA | 77 MWh | Sep 1939 | Dec 2025 | Distillate Fuel Oil |
| Arcadia Electric | City of Arcadia - (WI) | Arcadia, WI | 253 MWh | Dec 1929 | Dec 2025 | Distillate Fuel Oil : 70.5% Natural Gas : 29.5% |
| Argyle | City of Argyle - (WI) | Argyle, WI | 193 MWh | Dec 1928 | Dec 2025 | Water : 92.7% Distillate Fuel Oil : 7.3% |
| Barron | City of Barron - (WI) | Barron, WI | 382 MWh | Jul 1923 | Dec 2025 | Water |
| Henry Station | City of Bay City - (MI) | Bay City, MI | 1 GWh | Apr 1993 | Dec 2025 | Natural Gas : 93.0% Distillate Fuel Oil : 7.0% |
| Water Street Station | City of Bay City - (MI) | Bay City, MI | 1 GWh | Jul 1980 | Dec 2025 | Natural Gas : 90.5% Distillate Fuel Oil : 9.5% |
| Bellevue | City of Bellevue - (IA) | Bellevue, IA | 10 MWh | Jun 1947 | Dec 2025 | Distillate Fuel Oil |
| Benson City of | City of Benson - (MN) | Benson, MN | 114 MWh | Apr 2002 | Dec 2025 | Distillate Fuel Oil |
| Blooming Prairie | City of Blooming Prairie - (MN) | Blooming Prairie, MN | 246 MWh | Apr 1937 | Dec 2025 | Distillate Fuel Oil |
| Breese | City of Breese - (IL) | Breese, IL | 539 MWh | Nov 1953 | Dec 2025 | Distillate Fuel Oil |
| Brooklyn City North Plant | City of Brooklyn - (IA) | Brooklyn, IA | 7 MWh | Apr 2002 | Dec 2025 | Distillate Fuel Oil |
| Brooklyn | City of Brooklyn - (IA) | Brooklyn, IA | 14 MWh | Aug 2012 | Dec 2025 | Distillate Fuel Oil |
| Bushnell | City of Bushnell - (IL) | Bushnell, IL | 78 MWh | May 1940 | Dec 2025 | Distillate Fuel Oil |
| Carlyle | City of Carlyle - (IL) | Carlyle, IL | 208 MWh | Jul 1964 | Dec 2025 | Distillate Fuel Oil |
| Carmi | City of Carmi - (IL) | Carmi, IL | 92 MWh | Nov 1948 | Dec 2025 | Distillate Fuel Oil |
| Casey City of | City of Casey - (IL) | Casey, IL | 80 MWh | Apr 2002 | Dec 2025 | Distillate Fuel Oil |
| Columbia Energy Center | City of Columbia - (MO) | Columbia, MO | 51 GWh | May 2001 | Dec 2025 | Natural Gas |
| Columbia (MO) | City of Columbia - (MO) | Columbia, MO | 27 GWh | Dec 1956 | Dec 2025 | Landfill Gas : 69.6% Natural Gas : 30.4% |
| Corning | City of Corning - (IA) | Corning, IA | 6 MWh | May 1975 | Dec 2025 | Distillate Fuel Oil |
| Crystal Falls | City of Crystal Falls - (MI) | Crystal Falls, MI | 5 GWh | May 1914 | Dec 2025 | Water |
| Cumberland (WI) | City of Cumberland - (WI) | Cumberland, WI | 269 MWh | Jul 1939 | Dec 2025 | Distillate Fuel Oil : 62.7% Natural Gas : 37.3% |
| Dayton (IA) | City of Dayton - (IA) | Dayton, IA | 2 MWh | Sep 2000 | Dec 2025 | Distillate Fuel Oil |
| Detroit Lakes | City of Detroit Lakes - (MN) | Detroit Lakes, MN | 41 MWh | Jun 1968 | Dec 2025 | Distillate Fuel Oil |
| Dike City Power Plant | City of Dike - (IA) | Dike, IA | 4 MWh | May 2005 | Dec 2025 | Distillate Fuel Oil |
| Durant | City of Durant - (IA) | Durant, IA | 29 MWh | Jun 1970 | Dec 2025 | Distillate Fuel Oil |
| Earlville | City of Earlville - (IA) | Earlville, IA | 7 MWh | Jun 2001 | Dec 2025 | Distillate Fuel Oil |
| Elroy | City of Elroy - (WI) | Elroy, WI | 48 MWh | Apr 1973 | Dec 2025 | Distillate Fuel Oil |
| Fairfax | City of Fairfax - (MN) | Fairfax, MN | 6 MWh | Jul 2001 | Dec 2025 | Distillate Fuel Oil |
| Farmer City | City of Farmer City - (IL) | Farmer City, IL | 59 MWh | Mar 1951 | Dec 2025 | Distillate Fuel Oil |
| Walton Street Substation | City of Farmington - (MO) | Farmington, MO | 7 MWh | Dec 2002 | Dec 2025 | Distillate Fuel Oil |
| Elm Street Substation Generators | City of Farmington - (MO) | Farmington, MO | 16 MWh | Sep 2002 | Dec 2025 | Distillate Fuel Oil |
| Overall Road Station | City of Farmington - (MO) | Farmington, MO | 29 MWh | Feb 2003 | Dec 2025 | Distillate Fuel Oil |
| Fennimore | City of Fennimore - (WI) | Fennimore, WI | 75 MWh | Jan 1952 | Dec 2025 | Distillate Fuel Oil |
| Flora Site A | City of Flora - (IL) | Flora, IL | 47 MWh | Nov 2001 | Dec 2025 | Distillate Fuel Oil |
| Flora Site B | City of Flora - (IL) | Flora, IL | 43 MWh | Nov 2001 | Dec 2025 | Distillate Fuel Oil |
| Forest City Light Plant | City of Forest City- (IA) | Forest City, IA | 392 MWh | Dec 1945 | Dec 2025 | Distillate Fuel Oil |
| Geneseo | City of Geneseo - (IL) | Geneseo, IL | 8 GWh | Jun 1957 | Jul 2026 | Wind : 71.7% Solar : 21.5% Distillate Fuel Oil : 6.8% |
| Graettinger | City of Graettinger - (IA) | Graettinger, IA | 49 MWh | Jul 1957 | Dec 2025 | Distillate Fuel Oil |
| Grand Junction | City of Grand Junction - (IA) | Grand Junction, IA | 41 MWh | Nov 1994 | Dec 2025 | Distillate Fuel Oil |
| Grand Marais | City of Grand Marais - (MN) | Grand Marais, MN | 164 MWh | Jan 2004 | Dec 2025 | Distillate Fuel Oil |
| Granite Falls | City of Granite Falls - (MN) | Granite Falls, MN | 2 GWh | Jul 1932 | Dec 2025 | Water |
| North Generation Plant | City of Greenfield - (IA) | Greenfield, IA | 11 MWh | Dec 2001 | Dec 2025 | Distillate Fuel Oil |
| Downtown Generation Plant | City of Greenfield - (IA) | Greenfield, IA | 15 MWh | Jun 2020 | Dec 2025 | Distillate Fuel Oil |
| Halstad | City of Halstad - (MN) | Halstad, MN | 34 MWh | Aug 2007 | Dec 2025 | Distillate Fuel Oil |
| Highland | City of Highland - (IL) | Highland, IL | 222 MWh | Feb 1967 | Dec 2025 | Distillate Fuel Oil |
| Hillsboro | City of Hillsboro - (ND) | Hillsboro, ND | 17 MWh | Jun 2002 | Dec 2025 | Distillate Fuel Oil |
| 491 E 48th Street | City of Holland - (MI) | Holland, MI | 142 GWh | Apr 1992 | Dec 2025 | Natural Gas |
| Holland Energy Park | City of Holland - (MI) | Holland, MI | 974 GWh | May 2017 | Dec 2025 | Natural Gas |
| Hopkinton | City of Hopkinton - (IA) | Hopkinton, IA | 54 MWh | Aug 1973 | Dec 2025 | Distillate Fuel Oil |
| Jackson (MO) | City of Jackson - (MO) | Jackson, MO | 202 MWh | Dec 1935 | Dec 2025 | Distillate Fuel Oil : 67.1% Natural Gas : 32.9% |
| Janesville | City of Janesville - (MN) | Janesville, MN | 35 MWh | Apr 1955 | Dec 2025 | Distillate Fuel Oil : 97.5% Natural Gas : 2.5% |
| Kahoka | City of Kahoka - (MO) | Kahoka, MO | 5 MWh | Dec 1940 | Dec 2024 | Distillate Fuel Oil |
| Kimberly Mill | City of Kaukauna (WI) | Appleton, WI | 13 GWh | Dec 1925 | Dec 2025 | Water |
| Kaukauna City Hydro | City of Kaukauna (WI) | Kaukauna, WI | 31 GWh | Nov 1940 | Dec 2025 | Water |
| Kaukauna Gas Turbine | City of Kaukauna (WI) | Kaukauna, WI | 2 GWh | Apr 1969 | Dec 2025 | Natural Gas |
| Little Chute | City of Kaukauna (WI) | Combined Locks, WI | 22 GWh | May 1948 | Dec 2025 | Water |
| New Badger | City of Kaukauna (WI) | Kaukauna, WI | 42 GWh | Dec 2013 | Jul 2026 | Water |
| Combined Locks | City of Kaukauna (WI) | Combined Locks, WI | 43 GWh | Jan 1988 | Dec 2025 | Water |
| Rapide Croche | City of Kaukauna (WI) | Kaukana, WI | 17 GWh | Dec 1925 | Dec 2025 | Water |
| Lake Crystal | City of Lake Crystal - (MN) | Lake Crystal, MN | 21 MWh | Apr 1952 | Dec 2025 | Distillate Fuel Oil |
| Lake Mills | City of Lake Mills - (IA) | Lake Mills, IA | 99 MWh | Dec 1955 | Dec 2025 | Distillate Fuel Oil |
| Lake Park | City of Lake Park - (IA) | Lake Park, IA | 16 MWh | Mar 2005 | Dec 2025 | Distillate Fuel Oil |
| Lakefield Utilities | City of Lakefield - (MN) | Lakefield, MN | 11 MWh | Jan 1985 | Dec 2025 | Distillate Fuel Oil |
| Lamoni Municipal Utilities | City of Lamoni - (IA) | Lamoni, IA | 45 MWh | Feb 1940 | Dec 2025 | Distillate Fuel Oil |
| Lenox | City of Lenox - (IA) | Lenox, IA | 55 MWh | Aug 1948 | Dec 2025 | Distillate Fuel Oil |
| Chatham | City of Lowell - (MI) | Lowell, MI | 103 MWh | Aug 2013 | Dec 2025 | Natural Gas |
| Marceline | City of Marceline - (MO) | Marceline, MO | 20 MWh | Jul 1989 | Dec 2025 | Distillate Fuel Oil |
| James R Smith | City of Marquette - (MI) | Marquette, MI | 14 GWh | Dec 1918 | Dec 2025 | Water |
| Marquette Energy Center | City of Marquette - (MI) | Marquette, MI | 164 GWh | Jul 2017 | Dec 2025 | Natural Gas : 98.9% Distillate Fuel Oil : 1.1% |
| Marshall (IL) | City of Marshall - (IL) | Marshall, IL | 167 MWh | Mar 2002 | Dec 2025 | Distillate Fuel Oil |
| Marshall (MI) | City of Marshall - (MI) | Marshall, MI | 638 MWh | May 1928 | Dec 2025 | Water |
| Marshall (MN) | City of Marshall - (MN) | Marshall, MN | 93 MWh | Jun 1969 | Dec 2025 | Distillate Fuel Oil |
| Marshfield Utilities Gas Plant | City of Marshfield - (WI) | Marshfield, WI | 19 GWh | May 2011 | Dec 2025 | Natural Gas |
| McGregor | City of McGregor- (IA) | McGregor, IA | 11 MWh | Nov 1941 | Dec 2025 | Distillate Fuel Oil |
| McLeansboro | City of McLeansboro - (IL) | McLeansboro, IL | 42 MWh | Nov 1950 | Dec 2025 | Distillate Fuel Oil |
| Montezuma | City of Montezuma - (IA) | Montezuma, IA | 115 MWh | Jul 1940 | Dec 2025 | Distillate Fuel Oil : 67.9% Natural Gas : 32.1% |
| Mora | City of Mora - (MN) | Mora, MN | 1 GWh | Aug 1957 | Dec 2025 | Natural Gas : 71.2% Distillate Fuel Oil : 28.8% |
| Mountain Lake | City of Mountain Lake - (MN) | Mountain Lake, MN | 3 GWh | Apr 1954 | Dec 2025 | Wind : 96.5% Distillate Fuel Oil : 1.9% Natural Gas : 1.6% |
| New Lisbon | City of New Lisbon (WI) | New Lisbon, WI | 55 MWh | Dec 1965 | Dec 2025 | Distillate Fuel Oil |
| Murray | City of North Little Rock - (AR) | North Little Rock, AR | 116 GWh | Sep 1988 | Dec 2025 | Water |
| Norway (MI) | City of Norway - (MI) | Norway, MI | 30 GWh | May 1905 | Dec 2025 | Water |
| Ogden | City of Ogden - (IA) | Ogden, IA | 73 MWh | Jun 1951 | Dec 2025 | Distillate Fuel Oil |
| Osage (IA) | City of Osage - (IA) | Osage, IA | 5 GWh | Aug 1963 | Dec 2025 | Wind : 81.8% Solar : 18.2% |
| Ottumwa City of | City of Ottumwa - (IA) | Ottumwa, IA | 3 GWh | Jul 1931 | Dec 2025 | Water |
| Owatonna | City of Owatonna - (MN) | Owatonna, MN | 1 GWh | Mar 1982 | Dec 2025 | Natural Gas |
| Panora | City of Panora - (IA) | Panora, IA | 8 MWh | Dec 1987 | Dec 2025 | Distillate Fuel Oil |
| Pella Peaking | City of Pella - (IA) | Pella, IA | 752 MWh | May 2003 | Dec 2025 | Distillate Fuel Oil |
| City of Peru Plank Road Generating Station | City of Peru - (IL) | Peru, IL | 19 GWh | Sep 1968 | Jul 2026 | Water : 96.9% Distillate Fuel Oil : 2.3% Jet Fuel : 0.7% |
| City of Peru Water Street Generating Sta | City of Peru - (IL) | Peru, IL | 33 MWh | Sep 1968 | Dec 2025 | Jet Fuel |
| City of Peru Hydro-Electric Generating S | City of Peru - (IL) | Utica, IL | 17 GWh | Aug 1996 | Dec 2025 | Water |
Surrounding Balancing Authorities
| Rank | Balancing Authority | Annual Net Generation | # Power Plants |
|---|---|---|---|
| #61 | Alcoa Power Generating, Inc. - Yadkin Division | 433.0 GWh | 4 |
| #26 | Associated Electric Cooperative, Inc. | 22.9 TWh | 47 |
| #13 | Duke Energy Carolinas | 113.4 TWh | 578 |
| #50 | Duke Energy Progress West | 4.6 TWh | 15 |
| #23 | Louisville Gas and Electric Company and Kentucky Utilities Company | 34.2 TWh | 25 |
| #1 | PJM Interconnection, LLC | 890.9 TWh | 2,806 |
| #6 | Southern Company Services, Inc. - Trans | 259.3 TWh | 423 |
| #5 | Southwest Power Pool | 314.5 TWh | 876 |
| #53 | Southwestern Power Administration | 3.5 TWh | 37 |
| #9 | Tennessee Valley Authority | 166.2 TWh | 209 |
Balancing Authorities with Similar Net Generation
| Rank | Balancing Authority | Annual Net Generation | # Power Plants |
|---|---|---|---|
| #1 | PJM Interconnection, LLC | 890.9 TWh | 2,806 |
| #2 | Midcontinent Independent System Operator, Inc. | 677.7 TWh | 3,095 |
| #3 | Electric Reliability Council of Texas, Inc. | 506.3 TWh | 1,487 |
| #5 | Southwest Power Pool | 314.5 TWh | 876 |
| #6 | Southern Company Services, Inc. - Trans | 259.3 TWh | 423 |
| #7 | California Independent System Operator | 168.7 TWh | 2,170 |
| #9 | Tennessee Valley Authority | 166.2 TWh | 209 |
| #10 | Florida Power & Light Co. | 153.0 TWh | 188 |
| #12 | New York Independent System Operator | 134.1 TWh | 1,334 |
| #13 | Duke Energy Carolinas | 113.4 TWh | 578 |