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% |
Map of Midcontinent Independent System Operator, Inc.
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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 |
|---|---|---|---|---|---|---|
| South Central Electric Cooperative | Today's Power, Inc. | Arkadelphia, AR | 2 GWh | Jul 2019 | Dec 2025 | Solar |
| Argyle | City of Argyle - (WI) | Argyle, WI | 193 MWh | Dec 1928 | Dec 2025 | Water : 92.7% Distillate Fuel Oil : 7.3% |
| Zimmerman Energy | Landfill Energy Systems | Argos, IN | 41 GWh | Oct 2014 | May 2026 | Landfill Gas |
| Arcadia Solar | Green Street Power Partners | Arcadia, WI | 7 GWh | Aug 2019 | Dec 2025 | Solar |
| Arcadia Electric | City of Arcadia - (WI) | Arcadia, WI | 253 MWh | Dec 1929 | Dec 2025 | Distillate Fuel Oil : 70.5% Natural Gas : 29.5% |
| Kimberly Mill | City of Kaukauna (WI) | Appleton, WI | 13 GWh | Dec 1925 | Dec 2025 | Water |
| Appleton | Wisconsin Electric Power Co | Appleton, WI | 12 GWh | Jul 1916 | Dec 2025 | Water |
| Apple Canyon Lake Solar | ACM Solar, LLC. | Apple River, IL | 3 GWh | Nov 2020 | Dec 2025 | Solar |
| Antigo-Forrest Street Solar Project | Wisconsin Public Service Corp | Antigo, WI | 9 GWh | Oct 2024 | Dec 2025 | Solar |
| Antigo Solar Partners, LLC | Wisconsin Electric Power Co | Antigo, WI | 9 GWh | Oct 2025 | Dec 2025 | Solar |
| Schueler Community Solar | Schueler Community Solar LLC | Annandale, MN | 2 GWh | Jul 2020 | Dec 2025 | Solar |
| Annandale Solar | Enel Green Power NA, Inc. | Annandale, MN | 12 GWh | Nov 2016 | Dec 2025 | Solar |
| Domino Farms Solar | DTE Electric Company | Ann Arbor, MI | 844 MWh | Aug 2015 | May 2026 | Solar |
| Warner Lambert | University of Michigan NCampus Research | Ann Arbor, MI | 24 GWh | Jul 1989 | May 2026 | Natural Gas |
| University of Michigan | University of Michigan | Ann Arbor, MI | 232 GWh | Dec 1974 | May 2026 | Natural Gas |
| Peoples Generating Station | Sagepoint Energy | Ann Arbor, MI | 25 GWh | Aug 1995 | Dec 2025 | Landfill Gas |
| Anita | City of Anita - (IA) | Anita, IA | 77 MWh | Sep 1939 | Dec 2025 | Distillate Fuel Oil |
| Green Energy Machine | Green Energy Machine, LLC | Anita, IA | 6 GWh | May 2016 | Dec 2025 | Wind |
| Roseman | Roseman Energy, LLC | Anita, IA | 7 GWh | Jan 2017 | Dec 2025 | Wind |
| NCAH Central Utility Plant | National Centers for Animal Health | Ames, IA | 439 MWh | May 1996 | May 2026 | Natural Gas : 82.6% Distillate Fuel Oil : 17.4% |
| Michelangelo Wind 4 LLC | Novis Renewables, LLC | Ames, IA | 10 GWh | Nov 2016 | Dec 2025 | Wind |
| Iowa State University | Iowa State University | Ames, IA | 71 GWh | Sep 1960 | May 2026 | Natural Gas : 97.7% Distillate Fuel Oil : 2.3% |
| 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% |
| IA - City of Ames - Airport Road | Forefront Power, LLC | Ames, IA | 3 GWh | Nov 2020 | Dec 2024 | Solar |
| ISU Customer Hosted 1MW Solar Project | Interstate Power and Light Co | Ames, IA | 3 GWh | Apr 2024 | Dec 2025 | Solar |
| Apple River Solar, LLC | Geronimo Power | Amery, WI | 82 GWh | Nov 2025 | May 2026 | Solar |
| Winona Garden | Winona Garden LLC | Altura, MN | 2 GWh | Oct 2023 | Dec 2025 | Solar |
| USS Bluff Country Solar CSG | United States Solar Corporation | Altura, MN | 2 GWh | Nov 2020 | Dec 2025 | Solar |
| Winona Solar | Winona Solar I LLC | Altura, MN | 4 GWh | Jul 2019 | Dec 2025 | Solar |
| Altamont | City of Altamont - (IL) | Altamont, IL | 75 MWh | Dec 2001 | Dec 2025 | Distillate Fuel Oil |
| Storm Lake II | ALLETE Clean Energy | Alta, IA | 115 GWh | Mar 1999 | Dec 2025 | Wind |
| Storm Lake 1 | ALLETE Clean Energy | Alta, IA | 87 GWh | Apr 1999 | Dec 2025 | Wind |
| Alsey | Prairie Power, Inc | Alsey, IL | 35 GWh | May 1999 | Dec 2025 | Natural Gas : 99.8% |
| Ninth Street Hydropower Project | Eagle Creek Renewable Energy, LLC | Alpena, MI | 6 GWh | Aug 1990 | Dec 2025 | Water |
| Four Mile Hydropower Project | Eagle Creek Renewable Energy, LLC | Alpena, MI | 8 GWh | Aug 1990 | Dec 2025 | Water |
| Alpena Cement Plant | Lafarge Corp | Alpena, MI | 206 GWh | Dec 1951 | May 2026 | Petroleum Coke : 86.8% Natural Gas : 13.2% |
| Norway Point Hydropower Project | Eagle Creek Renewable Energy, LLC | Alpena, MI | 13 GWh | Aug 1990 | Dec 2025 | Water |
| John P Madgett | Dairyland Power Coop | Alma, WI | 1 TWh | Oct 1979 | May 2026 | Subbituminous Coal : 99.5% |
| Pine River Solar Park | DTE Electric Company | Alma, MI | 126 GWh | May 2025 | May 2026 | Solar |
| Grand Valley Solar Gardens | Consumers Energy Co - (MI) | Allendale, MI | 4 GWh | Mar 2016 | May 2026 | Solar |
| Heartwood Solar | Heartwood Solar, LLC | Allen, MI | 22 GWh | - | May 2026 | Solar |
| Allegan Dam | Consumers Energy Co - (MI) | Allegan, MI | 12 GWh | Dec 1934 | Dec 2025 | Water |
| 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 |
| Leonardo Wind 1 LLC | Novis Renewables, LLC | Alden, IA | 9 GWh | Nov 2016 | Dec 2025 | Wind |
| The Andersons Albion Ethanol LLC | The Andersons Albion Ethanol LLC | Albion, MI | 62 GWh | Jul 2006 | Dec 2025 | Natural Gas |
| Shipsterns Solar, LLC | Shipsterns Solar, LLC | Albion, MI | 41 GWh | Sep 2023 | Dec 2025 | Solar |
| River Fork Solar, LLC | River Fork Solar, LLC | Albion, MI | 291 GWh | Sep 2024 | May 2026 | Solar |
| Bancroft (MN) | OneEnergy, Inc. | Albert Lea, MN | 589 MWh | Sep 2025 | Dec 2025 | Solar |
| REG Juhl Glenville Wind, LLC | REG Juhl Glenville Wind, LLC | Albert Lea, MN | 8 GWh | Nov 2020 | Dec 2025 | Wind |
| Goose Lake MN DPC-GM | ENGIE Generation North America LLC | Albert Lea, MN | 3 GWh | Jan 2019 | Dec 2025 | Solar |
| Schwinghamer Project CSG | Schwinghamer Community Solar LLC | Albany, MN | 2 GWh | Nov 2019 | Dec 2025 | Solar |
| Novel Reber Solar CSG | REA Investments, LLC | Albany, MN | 2 GWh | Oct 2019 | Dec 2025 | Solar |
| Stearns Community Solar One LLC CSG | Madison Energy Holdings LLC | Albany, MN | 2 GWh | Nov 2019 | Dec 2025 | Solar |
| Stearns Solar I | Stearns Solar I LLC | Albany, MN | 2 GWh | Aug 2019 | Dec 2025 | Solar |
| FastSun 3 CSG | Altus Power America Management, LLC | Albany, MN | 2 GWh | Nov 2019 | Dec 2025 | Solar |
| Albany Solar | Enel Green Power NA, Inc. | Albany, MN | 19 GWh | Nov 2016 | Dec 2025 | Solar |
| Novel MNDot Solar CSG | REA Investments, LLC | Afton, MN | 2 GWh | Oct 2020 | Dec 2025 | Solar |
| SV CSG AFTON I | SV CSG Afton I, LLC | Afton, MN | 2 GWh | Jun 2024 | Dec 2025 | Solar |
| Blue Elk IV Solar, LLC | Blue Elk IV Solar, LLC | Adrian, MI | 37 GWh | Nov 2023 | Dec 2025 | Solar |
| Adrian Energy Associates LLC | NextEra Renewable Fuels, LLC | Adrian, MI | 2 GWh | Nov 1994 | Dec 2025 | Landfill Gas |
| Castle Rock | Wisconsin River Power Company | Adams, WI | 83 GWh | Jul 1950 | Dec 2025 | Water |
| Adams PV Plant | Adams PV Plant (WI) | Adams, WI | 15 GWh | Jun 2023 | Dec 2025 | Solar |
| Adams Wind Farm | Justin McNeilus | Adams, MN | 10 GWh | Aug 2003 | May 2025 | Wind |
| Adair Wind Farm | MidAmerican Energy Co | Adair, IA | 551 GWh | Nov 2008 | Dec 2025 | Wind |
| Eclipse Wind Farm | MidAmerican Energy Co | Adair, IA | 822 GWh | Aug 2012 | May 2026 | Wind |
| Morning Light Wind Farm | MidAmerican Energy Co | Adair, IA | 407 GWh | Sep 2012 | Dec 2025 | Wind |
| Ada Cogeneration LP | Ada Cogeneration LLC | Ada, MI | 185 GWh | Sep 1990 | Dec 2025 | Natural Gas |
| Ada Dam | Eagle Creek Renewable Energy, LLC | Ada, MI | 2 GWh | Feb 1984 | Dec 2025 | Water |
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 |