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 |
|---|---|---|---|---|---|---|
| Pioneer Trail Wind Farm, LLC | RWE Clean Energy | Paxton, IL | 470 GWh | Nov 2011 | Dec 2025 | Wind |
| Woodstock Windfarm | RWE Clean Energy | Woodstock, MN | 37 GWh | Apr 1999 | Dec 2025 | Wind |
| Quartz Solar, LLC | RWE Clean Energy | Wynne, AR | 299 GWh | Feb 2025 | May 2026 | Solar |
| Emily Solar, LLC | RWE Clean Energy | Casey, IL | 235 GWh | Nov 2025 | May 2026 | Solar |
| Lafitte Solar, LLC | RWE Clean Energy | Monroe, LA | 87 GWh | Nov 2025 | May 2026 | Solar |
| Waxdale | S.C. Johnson & Son, Inc. | Sturtevant, WI | 37 GWh | Nov 2003 | May 2026 | Natural Gas : 43.5% Landfill Gas : 30.9% Wind : 17.2% Solar : 8.4% |
| SABIC Innovative Plastics Mt. Vernon | SABIC IP Mt. Vernon, LLC | Mount Vernon, IN | 580 GWh | May 1996 | May 2026 | Natural Gas |
| Sac County Wind, LLC | Sac County Wind | Sac City, IA | 321 GWh | Nov 2021 | May 2026 | Wind |
| SAF Hydroelectric LLC | SAF Hydroelectric LLC | Minneapolis, MN | 30 GWh | Nov 2011 | Dec 2025 | Water |
| Peoples Generating Station | Sagepoint Energy | Ann Arbor, MI | 25 GWh | Aug 1995 | Dec 2025 | Landfill Gas |
| Salt Creek Wind | Salt Creek Wind, LLC | Traer, IA | 360 GWh | Nov 2025 | May 2026 | Wind |
| Sandoval | Sandoval Holdco, LLC | Centralia, IL | 4 GWh | Feb 2021 | Dec 2025 | Solar |
| Sappi Cloquet Mill | Sappi Cloquet LLC | Cloquet, MN | 461 GWh | Dec 1928 | May 2026 | Black Liquor : 62.8% Wood/Wood Waste Solids : 17.5% Natural Gas : 15.7% Water : 3.1% |
| Sartell Holdco CSG | Sartell Holdco LLC | Sartell, MN | 8 GWh | Apr 2019 | Dec 2025 | Solar |
| Scandia Community Solar Garden | Scandia CSG LLC | Scandia, MN | 4 GWh | Jun 2018 | Dec 2024 | Solar |
| School Sisters CSG | School Sisters CSG LLC | Mankato, MN | 2 GWh | Apr 2018 | Dec 2025 | Solar |
| Schueler Community Solar | Schueler Community Solar LLC | Annandale, MN | 2 GWh | Jul 2020 | Dec 2025 | Solar |
| Schull CSG | Schull CSG LLC | Mapleton, MN | 2 GWh | Oct 2021 | Dec 2025 | Solar |
| Schulte 2 Community Solar | Schulte 2 Community Solar | Lacon, IL | 4 GWh | Nov 2020 | Dec 2025 | Solar |
| Schwinghamer Project CSG | Schwinghamer Community Solar LLC | Albany, MN | 2 GWh | Nov 2019 | Dec 2025 | Solar |
| Searcy Solar Hybrid | Searcy Solar, LLC | Searcy, AR | 178 GWh | Dec 2021 | May 2026 | Solar |
| Sebree Solar, LLC | Sebree Solar, LLC | Robards, KY | 329 GWh | Aug 2025 | May 2026 | Solar |
| Severson Garden | Severson HoldCo LLC | Waseca, MN | 2 GWh | Sep 2020 | Dec 2025 | Solar |
| Shane's Wind Machine | Shane's Wind Machine LLC | Ruthton, MN | 7 GWh | Jun 2006 | Jan 2025 | Wind |
| Shaokatan Hills LLC | Shaokatan Hills, LLC (Longroad) | Hendricks, MN | 12 GWh | Jul 1999 | Dec 2024 | Wind |
| Shelby Energy County | Shelby County Energy Center, LLC | Neoga, IL | 184 GWh | May 2000 | Dec 2025 | Natural Gas |
| Shell Chemical | Shell Chemical LP - Geismar | Geismar, LA | 585 GWh | Jul 2002 | Dec 2025 | Natural Gas |
| Shipsterns Solar, LLC | Shipsterns Solar, LLC | Albion, MI | 41 GWh | Sep 2023 | Dec 2025 | Solar |
| Siems Solar Project CSG | Siems Community Solar LLC | Mazeppa, MN | 2 GWh | Jul 2020 | Dec 2025 | Solar |
| Sky Volt | Sky Volt, LLC | Greenfield, IA | 5 GWh | Jul 2012 | Dec 2025 | Wind |
| Sleepy Eye | Sleepy Eye Public Utility Comm | Sleepy Eye, MN | 131 MWh | Jun 1995 | Dec 2024 | Distillate Fuel Oil |
| Round Grove 1 | SoCore Energy LLC | Lyndon, IL | 4 GWh | Oct 2021 | Dec 2025 | Solar |
| Illinois PV Knox 3B | SoCore Energy LLC | Galesburg, IL | 3 GWh | Nov 2024 | Dec 2025 | Solar |
| Illinois PV Knox 3A | SoCore Energy LLC | Galesburg, IL | 3 GWh | Nov 2024 | Dec 2025 | Solar |
| Yorktown 2 Solar | SoCore Energy LLC | Lyndon, IL | 4 GWh | Dec 2023 | Dec 2025 | Solar |
| Yorktown 1 Solar | SoCore Energy LLC | Lyndon, IL | 4 GWh | Dec 2023 | Dec 2025 | Solar |
| Illinois PV Knox 1A | SoCore Energy LLC | Yates City, IL | 3 GWh | Aug 2024 | Dec 2025 | Solar |
| Fond du Lac Community Solar | SoCore Energy LLC | Fond Du Lac, WI | 2 GWh | Nov 2021 | Dec 2025 | Solar |
| Round Grove 2 | SoCore Energy LLC | Lyndon, IL | 5 GWh | Oct 2021 | Dec 2025 | Solar |
| Rockford Plant | SoCore Energy LLC | Rockford, IL | 3 GWh | Nov 2024 | Dec 2025 | Solar |
| Illinois PV Knox 1B | SoCore Energy LLC | Yates City, IL | 4 GWh | Aug 2024 | Dec 2025 | Solar |
| GRE Cambridge Solar | SoCore Energy LLC | Cambridge, MN | 4 GWh | Nov 2019 | Dec 2025 | Solar |
| DPC York | SoCore Energy LLC | Thomson, IL | 3 GWh | Jul 2019 | Dec 2025 | Solar |
| DPC Madison | SoCore Energy LLC | Ridgeway, IA | 3 GWh | Jan 2019 | Dec 2025 | Solar |
| Bunker Hill Solar | SoCore Energy LLC | Lyndon, IL | 4 GWh | Oct 2021 | Dec 2025 | Solar |
| Abel Solar | SoCore Energy LLC | Morrison, IL | 4 GWh | Nov 2021 | Dec 2025 | Solar |
| Macomb 2A | SoCore Energy LLC | Macomb, IL | 4 GWh | Nov 2024 | Dec 2025 | Solar |
| Hampton MN GRE | SoCore Energy LLC | Hampton Township, MN | 3 GWh | Sep 2018 | Sep 2025 | Solar |
| Anoka County MN CONX | SoCore Energy LLC | Ramsey, MN | 6 GWh | Sep 2018 | Dec 2025 | Solar |
| Athens MN CONX | SoCore Energy LLC | Athens, MN | 10 GWh | Nov 2018 | Dec 2025 | Solar |
| Taylors Falls CSG | SoCore Energy LLC | Taylor Falls, MN | 8 GWh | Dec 2017 | Dec 2025 | Solar |
| Richmond CSG | SoCore Energy LLC | Richmond, MN | 9 GWh | Nov 2017 | Dec 2025 | Solar |
| Gopher CSG | SoCore Energy LLC | Taylor Falls, MN | 8 GWh | Dec 2017 | Dec 2025 | Solar |
| Sauk DPC Solar | SoCore Energy LLC | Wonewoc, WI | 2 GWh | Dec 2016 | Dec 2025 | Solar |
| Lafayette DPC Solar | SoCore Energy LLC | Chippewa Falls, WI | 2 GWh | May 2017 | Dec 2025 | Solar |
| Medford DPC Solar | SoCore Energy LLC | Medford, WI | 3 GWh | Jan 2017 | May 2026 | Solar |
| Mt. Hope DPC Solar | SoCore Energy LLC | Mt. Hope, WI | 2 GWh | Dec 2016 | May 2026 | Solar |
| Downsville DPC Solar | SoCore Energy LLC | Menomonee, WI | 2 GWh | Jan 2017 | May 2026 | Solar |
| Whistling Winds DPC Solar | SoCore Energy LLC | New Lisbon, WI | 2 GWh | May 2017 | May 2026 | Solar |
| GRE Marshan Solar | SoCore Energy LLC | Hastings, MN | 1 GWh | Oct 2017 | Dec 2025 | Solar |
| New Auburn DPC Solar | SoCore Energy LLC | New Auburn, WI | 5 GWh | Dec 2017 | May 2026 | Solar |
| Liberty Pole DPC Solar | SoCore Energy LLC | Viroqua, WI | 2 GWh | Apr 2017 | May 2026 | Solar |
| Warren DPC Solar | SoCore Energy LLC | Roberts, WI | 4 GWh | Apr 2017 | May 2026 | Solar |
| Conrath DPC Solar | SoCore Energy LLC | Conrath, WI | 1 GWh | May 2017 | Dec 2025 | Solar |
| Strawberry Point DPC Solar | SoCore Energy LLC | Strawberry Point, IA | 2 GWh | Oct 2017 | Dec 2025 | Solar |
| Sand Lake DPC Solar | SoCore Energy LLC | Centuria, WI | 2 GWh | Oct 2017 | Dec 2025 | Solar |
| Nesvold Watertown Solar | SoCore Energy LLC | Watertown, MN | 9 GWh | Dec 2017 | Dec 2025 | Solar |
| Michael Solar | SoCore Energy LLC | Freeport, MN | 7 GWh | Nov 2017 | Dec 2025 | Solar |
| Lahr 1, LLC | SoCore Energy LLC | Wakefield Township, MN | 8 GWh | Dec 2017 | Dec 2025 | Solar |
| Vermillion River_MN_GRE DEA-GM | SoCore Energy LLC | Farmington, MN | 5 GWh | Nov 2019 | Dec 2025 | Solar |
| LA3 West Baton Rouge Solar Facility | Sol Systems | West Baton Rouge, LA | 110 GWh | Aug 2020 | May 2026 | Solar |
| Prairie Creek Solar | Sol Systems | Jacksonville, IL | 58 GWh | Oct 2023 | May 2026 | Solar |
| Eldorado Solar I | Sol Systems | Eldorado, IL | 317 GWh | Dec 2024 | May 2026 | Solar |
| Tilden Solar | Sol Systems | Coulterville, IL | 153 GWh | Oct 2025 | May 2026 | Solar |
| Eldorado Solar II | Sol Systems | Eldorado, IL | 140 GWh | Sep 2025 | May 2026 | Solar |
| Peoria County IL S2 | SolAmerica Energy, LLC | Peoria, IL | 2 GWh | May 2025 | Dec 2025 | Solar |
| Tazewell County IL S1 | SolAmerica Energy, LLC | Delavan, IL | 386 MWh | Sep 2025 | Dec 2025 | Solar |
| Macon County IL S1 | SolAmerica Energy, LLC | Decatur, IL | 316 MWh | Sep 2025 | Dec 2025 | Solar |
| Syncarpha Dodge 1 CSG | Solar Provider Group MN I LLC | Dodge Center, MN | 2 GWh | Apr 2019 | Dec 2025 | Solar |
| Amazon MDW7 Solar Project | Solar Star Prime 6, LLC | Monee, IL | 3 GWh | Oct 2022 | Dec 2025 | Solar |
| Solar Star Urbana Landfill Central | Solar Star Urbana Landfill Central, LLC | Urbana, IL | 4 GWh | Oct 2021 | Dec 2025 | Solar |
| Solar Star Urbana Landfill East | Solar Star Urbana Landfill East, LLC | Urbana, IL | 4 GWh | Sep 2021 | Dec 2025 | Solar |
| South Fork Wind Farm | South Fork Wind, LLC | Round Lake, MN | 54 GWh | Nov 2016 | Dec 2025 | Wind |
| South Garden | South Garden LLC | Winstead, MN | 2 GWh | Jun 2023 | Dec 2025 | Solar |
| Marion | Southern Illinois Power Coop | Marion, IL | 798 GWh | May 1963 | May 2026 | Bituminous Coal : 86.6% Natural Gas : 12.8% Distillate Fuel Oil : 0.6% |
| SIUC | Southern Illinois University Carbondale | Carbondale, IL | 9 GWh | May 1998 | May 2026 | Bituminous Coal |
| Volkman Road Solar Array Hybrid | Southern Indiana Gas & Elec Co | Evansville, IN | 3 GWh | Oct 2018 | Dec 2025 | Solar |
| Veolia ES Blackfoot Landfill Facility | Southern Indiana Gas & Elec Co | Winslow, IN | 4 GWh | May 2009 | Dec 2025 | Landfill Gas |
| Troy Solar | Southern Indiana Gas & Elec Co | Troy, IN | 95 GWh | Mar 2021 | May 2026 | Solar |
| Oak Hill Solar Array | Southern Indiana Gas & Elec Co | Evansville, IN | 3 GWh | Oct 2018 | Dec 2025 | Solar |
| Posey Solar | Southern Indiana Gas & Elec Co | Mount Vernon, IN | 405 GWh | Apr 2025 | May 2026 | Solar |
| F B Culley | Southern Indiana Gas & Elec Co | Newburgh, IN | 1 TWh | Nov 1966 | May 2026 | Bituminous Coal : 98.0% Natural Gas : 2.0% |
| A B Brown | Southern Indiana Gas & Elec Co | Mount Vernon, IN | 700 GWh | Feb 1979 | May 2026 | Natural Gas |
| Southern Minnesota Beet Sugar | Southern Minnesota Beet Sugar | Renville, MN | 28 GWh | Aug 1976 | May 2026 | Subbituminous Coal : 70.1% Natural Gas : 29.2% Residual Fuel Oil : 0.6% |
| Fairmont Wind | Southern Minnesota Mun P Agny | Fairmont, MN | 13 GWh | Feb 2003 | Dec 2025 | Wind |
| Redwood Falls Wind | Southern Minnesota Mun P Agny | Redwood Falls, MN | 9 GWh | Nov 2004 | Dec 2025 | Wind |
| Fairmont (MN) | Southern Minnesota Mun P Agny | Fairmont, MN | 8 GWh | Dec 1974 | Dec 2025 | Natural Gas : 98.8% Distillate Fuel Oil : 1.2% |
| SMMPA Methane Energy Facility | Southern Minnesota Mun P Agny | Mora, MN | 3 GWh | Mar 2012 | Dec 2025 | Landfill Gas |
| Owatonna Energy Station | Southern Minnesota Mun P Agny | Owatonna, MN | 2 GWh | Feb 2018 | Dec 2025 | Natural Gas |
| Deuel Harvest Wind Energy LLC | Southern Power Co | Clear Lake, SD | 1 TWh | Jan 2021 | May 2026 | Wind |
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 |