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 | Jul 2026 |
| Annual Generation | 669.4 TWh |
| Power Plants | 3,038 |
| Utilities | 1,345 |
| 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% Coal | 26.5% Wind | 14.9% Nuclear | 13.9% Solar | 5.7% Water | 1.4% Other Fuel | 0.6% |
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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 |
|---|---|---|---|---|---|---|
| Lakefield Utilities | City of Lakefield - (MN) | Lakefield, MN | 11 MWh | Jan 1985 | Dec 2025 | Distillate Fuel Oil |
| Lake Park | City of Lake Park - (IA) | Lake Park, IA | 16 MWh | Mar 2005 | 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 Crystal | City of Lake Crystal - (MN) | Lake Crystal, MN | 21 MWh | Apr 1952 | Dec 2025 | 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 | 44 GWh | Dec 2013 | May 2026 | Water |
| Rapide Croche | City of Kaukauna (WI) | Kaukana, WI | 17 GWh | Dec 1925 | Dec 2025 | Water |
| Combined Locks | City of Kaukauna (WI) | Combined Locks, WI | 43 GWh | Jan 1988 | Dec 2025 | Water |
| Kahoka | City of Kahoka - (MO) | Kahoka, MO | 5 MWh | Dec 1940 | Dec 2024 | Distillate Fuel Oil |
| Janesville | City of Janesville - (MN) | Janesville, MN | 35 MWh | Apr 1955 | Dec 2025 | Distillate Fuel Oil : 97.5% Natural Gas : 2.5% |
| Jackson (MO) | City of Jackson - (MO) | Jackson, MO | 202 MWh | Dec 1935 | Dec 2025 | Distillate Fuel Oil : 67.1% Natural Gas : 32.9% |
| Hopkinton | City of Hopkinton - (IA) | Hopkinton, IA | 54 MWh | Aug 1973 | 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 |
| Hillsboro | City of Hillsboro - (ND) | Hillsboro, ND | 17 MWh | Jun 2002 | Dec 2025 | Distillate Fuel Oil |
| Highland | City of Highland - (IL) | Highland, IL | 222 MWh | Feb 1967 | Dec 2025 | Distillate Fuel Oil |
| Halstad | City of Halstad - (MN) | Halstad, MN | 34 MWh | Aug 2007 | Dec 2025 | Distillate Fuel Oil |
| 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 |
| Granite Falls | City of Granite Falls - (MN) | Granite Falls, MN | 2 GWh | Jul 1932 | Dec 2025 | Water |
| Grand Marais | City of Grand Marais - (MN) | Grand Marais, MN | 164 MWh | Jan 2004 | Dec 2025 | Distillate Fuel Oil |
| Grand Junction | City of Grand Junction - (IA) | Grand Junction, IA | 41 MWh | Nov 1994 | Dec 2025 | Distillate Fuel Oil |
| Graettinger | City of Graettinger - (IA) | Graettinger, IA | 49 MWh | Jul 1957 | Dec 2025 | Distillate Fuel Oil |
| Geneseo | City of Geneseo - (IL) | Geneseo, IL | 8 GWh | Jun 1957 | May 2026 | Wind : 73.9% Solar : 21.1% Distillate Fuel Oil : 4.9% |
| Forest City Light Plant | City of Forest City- (IA) | Forest City, IA | 392 MWh | Dec 1945 | 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 |
| Fennimore | City of Fennimore - (WI) | Fennimore, WI | 75 MWh | Jan 1952 | Dec 2025 | Distillate Fuel Oil |
| Overall Road Station | City of Farmington - (MO) | Farmington, MO | 29 MWh | Feb 2003 | 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 |
| Farmer City | City of Farmer City - (IL) | Farmer City, IL | 59 MWh | Mar 1951 | Dec 2025 | Distillate Fuel Oil |
| Fairfax | City of Fairfax - (MN) | Fairfax, MN | 6 MWh | Jul 2001 | Dec 2025 | Distillate Fuel Oil |
| Elroy | City of Elroy - (WI) | Elroy, WI | 48 MWh | Apr 1973 | Dec 2025 | Distillate Fuel Oil |
| Earlville | City of Earlville - (IA) | Earlville, IA | 7 MWh | Jun 2001 | Dec 2025 | Distillate Fuel Oil |
| Durant | City of Durant - (IA) | Durant, IA | 29 MWh | Jun 1970 | Dec 2025 | Distillate Fuel Oil |
| Dike City Power Plant | City of Dike - (IA) | Dike, IA | 4 MWh | May 2005 | Dec 2025 | Distillate Fuel Oil |
| Detroit Lakes | City of Detroit Lakes - (MN) | Detroit Lakes, MN | 41 MWh | Jun 1968 | Dec 2025 | Distillate Fuel Oil |
| Dayton (IA) | City of Dayton - (IA) | Dayton, IA | 2 MWh | Sep 2000 | Dec 2025 | Distillate Fuel Oil |
| Cumberland (WI) | City of Cumberland - (WI) | Cumberland, WI | 269 MWh | Jul 1939 | Dec 2025 | Distillate Fuel Oil : 62.7% Natural Gas : 37.3% |
| Crystal Falls | City of Crystal Falls - (MI) | Crystal Falls, MI | 5 GWh | May 1914 | Dec 2025 | Water |
| Corning | City of Corning - (IA) | Corning, IA | 6 MWh | May 1975 | Dec 2025 | Distillate Fuel Oil |
| Columbia (MO) | City of Columbia - (MO) | Columbia, MO | 27 GWh | Dec 1956 | Dec 2025 | Landfill Gas : 69.6% Natural Gas : 30.4% |
| Columbia Energy Center | City of Columbia - (MO) | Columbia, MO | 51 GWh | May 2001 | Dec 2025 | Natural Gas |
| Casey City of | City of Casey - (IL) | Casey, IL | 80 MWh | Apr 2002 | Dec 2025 | Distillate Fuel Oil |
| Carmi | City of Carmi - (IL) | Carmi, IL | 230 MWh | Nov 1948 | Dec 2024 | Distillate Fuel Oil |
| Carlyle | City of Carlyle - (IL) | Carlyle, IL | 208 MWh | Jul 1964 | Dec 2025 | Distillate Fuel Oil |
| Bushnell | City of Bushnell - (IL) | Bushnell, IL | 78 MWh | May 1940 | 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 |
| Breese | City of Breese - (IL) | Breese, IL | 539 MWh | Nov 1953 | Dec 2025 | Distillate Fuel Oil |
| Blooming Prairie | City of Blooming Prairie - (MN) | Blooming Prairie, MN | 246 MWh | Apr 1937 | Dec 2025 | Distillate Fuel Oil |
| Benson City of | City of Benson - (MN) | Benson, MN | 114 MWh | Apr 2002 | Dec 2025 | Distillate Fuel Oil |
| Bellevue | City of Bellevue - (IA) | Bellevue, IA | 10 MWh | Jun 1947 | Dec 2025 | Distillate Fuel Oil |
| 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% |
| Barron | City of Barron - (WI) | Barron, WI | 382 MWh | Jul 1923 | Dec 2025 | Water |
| Argyle | City of Argyle - (WI) | Argyle, WI | 193 MWh | Dec 1928 | Dec 2025 | Water : 92.7% Distillate Fuel Oil : 7.3% |
| Arcadia Electric | City of Arcadia - (WI) | Arcadia, WI | 253 MWh | Dec 1929 | Dec 2025 | Distillate Fuel Oil : 70.5% Natural Gas : 29.5% |
| Anita | City of Anita - (IA) | Anita, IA | 77 MWh | Sep 1939 | 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% |
| Altamont | City of Altamont - (IL) | Altamont, IL | 75 MWh | Dec 2001 | Dec 2025 | Distillate Fuel Oil |
| Alexandria | City of Alexandria - (MN) | Alexandria, MN | 51 MWh | Dec 1947 | Dec 2025 | Distillate Fuel Oil |
| D G Hunter | City of Alexandria - (LA) | Alexandria, LA | 91 GWh | Apr 1965 | Dec 2025 | Natural Gas |
| CC Perry K | Citizens Thermal Energy | Indianapolis, IN | 15 GWh | Dec 1924 | May 2026 | Natural Gas |
| CITGO Refinery Powerhouse | CITGO Petroleum Corp | Sulphur, LA | 224 GWh | Dec 1941 | Dec 2025 | Other Gas |
| Chub Garden Solar | Chub Garden LLC | Northfield, MN | 2 GWh | Feb 2020 | Dec 2025 | Solar |
| Chisago Holdco LLC, CSG | Chisago Holdco LLC | Center City, MN | 5 GWh | Apr 2019 | Dec 2025 | Solar |
| Chisago Community Solar | Chisago Community Solar | Taylor Falls, MN | 6 GWh | Nov 2016 | Dec 2025 | Solar |
| Chicot Solar | Chicot Solar, LLC | Lake Village, AR | 213 GWh | Aug 2020 | May 2026 | Solar |
| Chickadee G-3 | Chickadee 3-G Purchaser LLC | Beaumont, TX | 231 GWh | Feb 1987 | May 2026 | Natural Gas : 98.3% Waste/Other Oil : 1.7% |
| Winters Spawn LLC | CHI Operations Inc | Lake Benton, MN | 5 GWh | Dec 2000 | Dec 2024 | Wind |
| Soliloquoy Ridge LLC | CHI Operations Inc | Lake Benton, MN | 5 GWh | Dec 2000 | Dec 2024 | Wind |
| Spartan Hills LLC | CHI Operations Inc | Lake Benton, MN | 5 GWh | Dec 2000 | Dec 2024 | Wind |
| Twin Lake Hills LLC | CHI Operations Inc | Lake Benton, MN | 5 GWh | Nov 2000 | Dec 2024 | Wind |
| Ruthton Ridge LLC | CHI Operations Inc | Lake Benton, MN | 5 GWh | Dec 2000 | Dec 2024 | Wind |
| Autumn Hills LLC | CHI Operations Inc | Hendricks, MN | 4 GWh | Jan 2001 | Dec 2024 | Wind |
| Jack River LLC | CHI Operations Inc | Hendricks, MN | 4 GWh | Jan 2001 | Dec 2024 | Wind |
| Jessica Mills LLC | CHI Operations Inc | Hendricks, MN | 4 GWh | Jan 2001 | Dec 2024 | Wind |
| Julia Hills LLC | CHI Operations Inc | Hendricks, MN | 4 GWh | Jan 2001 | Dec 2024 | Wind |
| Sun River LLC | CHI Operations Inc | Hendricks, MN | 4 GWh | Jan 2001 | Dec 2024 | Wind |
| Tsar Nicholas LLC | CHI Operations Inc | Hendricks, MN | 4 GWh | Jan 2001 | Dec 2024 | Wind |
| Agassiz Beach LLC | CHI Operations Inc | Averill, MN | 3 GWh | Jan 2001 | Dec 2025 | Wind |
| Hadley Ridge LLC | CHI Operations Inc | Lake Benton, MN | 5 GWh | Nov 2000 | Dec 2024 | Wind |
| Hope Creek LLC | CHI Operations Inc | Lake Benton, MN | 5 GWh | Dec 2000 | Dec 2024 | Wind |
| Florence Hills LLC | CHI Operations Inc | Lake Benton, MN | 5 GWh | Dec 2000 | Dec 2024 | Wind |
| Oak Point Cogen | Chevron Oronite Co LLC | Belle Chasse, LA | 98 GWh | Sep 1999 | Dec 2025 | Natural Gas |
| Cherry Valley PV I | Cherry Valley PV I, LLC | Cherry Valley, AR | 61 GWh | - | May 2026 | Solar |
| Chalmette Refining LLC | Chalmette Refining LLC | Chalmette, LA | 6 GWh | Feb 1990 | Dec 2025 | Other Fuel |
| CG Windfarm LLC | CG Windfarm LLC | Woodstock, MN | 2 GWh | Nov 2003 | Jan 2025 | Wind |
| CF Industries Yazoo City Complex | CF Industries Nitrogen LLC | Yazoo City, MS | 104 GWh | Jun 1984 | May 2026 | Natural Gas |
| Cerro Gordo Wind Farm | Cerro Gordo Wind Farm | Union, IA | 169 GWh | Jul 2020 | May 2026 | Wind |
| Cereal City Solar, LLC | Cereal City Solar, LLC | Battle Creek, MI | 199 GWh | Nov 2023 | May 2026 | Solar |
| Central Michigan University | Central Michigan University | Mt. Pleasant, MI | 29 GWh | Nov 1987 | May 2026 | Natural Gas |
| Summit Lake | Central Iowa Power Cooperative | Creston, IA | 109 GWh | Feb 1951 | Dec 2025 | Natural Gas : 99.8% |
| Eastern Iowa Solar | Central Iowa Power Cooperative | Wilton, IA | 3 GWh | Oct 2016 | Oct 2025 | Solar |
| Trigen St. Louis | Centerstream STL, LLC | St Louis, MO | 86 GWh | May 1999 | Jul 2025 | Natural Gas |
Surrounding Balancing Authorities
| Rank | Balancing Authority | Annual Net Generation | # Power Plants |
|---|---|---|---|
| #61 | Alcoa Power Generating, Inc. - Yadkin Division | 442.5 GWh | 4 |
| #26 | Associated Electric Cooperative, Inc. | 23.4 TWh | 47 |
| #13 | Duke Energy Carolinas | 112.6 TWh | 577 |
| #50 | Duke Energy Progress West | 4.5 TWh | 15 |
| #23 | Louisville Gas and Electric Company and Kentucky Utilities Company | 33.9 TWh | 25 |
| #1 | PJM Interconnection, LLC | 882.8 TWh | 2,652 |
| #6 | Southern Company Services, Inc. - Trans | 253.5 TWh | 422 |
| #5 | Southwest Power Pool | 306.8 TWh | 856 |
| #53 | Southwestern Power Administration | 4.1 TWh | 34 |
| #9 | Tennessee Valley Authority | 163.4 TWh | 207 |
Balancing Authorities with Similar Net Generation
| Rank | Balancing Authority | Annual Net Generation | # Power Plants |
|---|---|---|---|
| #1 | PJM Interconnection, LLC | 882.8 TWh | 2,652 |
| #2 | Midcontinent Independent System Operator, Inc. | 669.4 TWh | 3,038 |
| #3 | Electric Reliability Council of Texas, Inc. | 494.1 TWh | 1,471 |
| #5 | Southwest Power Pool | 306.8 TWh | 856 |
| #6 | Southern Company Services, Inc. - Trans | 253.5 TWh | 422 |
| #7 | California Independent System Operator | 169.4 TWh | 2,135 |
| #9 | Tennessee Valley Authority | 163.4 TWh | 207 |
| #10 | Florida Power & Light Co. | 152.2 TWh | 187 |
| #12 | New York Independent System Operator | 134.3 TWh | 1,299 |
| #13 | Duke Energy Carolinas | 112.6 TWh | 577 |