Midcontinent Independent System Operator, Inc.
Balancing Authority Summary Information
Midcontinent Independent System Operator, Inc. is ranked #2 out of 65 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 | Jan 2026 |
| Annual Generation | 656.9 TWh |
| Power Plants | 2,831 |
| Utilities | 1,296 |
| Ranked #2 out of 65 in terms of net annual generation | |
| Ranked #2 out of 53 in terms of annual generation from natural gas | |
| Power Plant Types | Natural Gas | 35.4% Coal | 28.9% Wind | 15.1% Nuclear | 14% Solar | 4.6% Water | 1.5% 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 |
|---|---|---|---|---|---|---|
| Arcadia Solar | Butter Solar, LLC | Arcadia, WI | 8 GWh | Aug 2019 | Dec 2024 | Solar |
| St. Charles Solar | Butter Solar, LLC | St Charles Township, MN | 3 GWh | Aug 2019 | Dec 2024 | Solar |
| Forest City Solar | Butter Solar, LLC | Forest City, IA | 5 GWh | Aug 2019 | Dec 2024 | Solar |
| Elroy Solar | Butter Solar, LLC | Mauston, WI | 2 GWh | Aug 2019 | Dec 2024 | Solar |
| Butler Ridge | Butler Ridge Wind Energy Center | Mayville, WI | 137 GWh | Jan 2009 | Oct 2025 | Wind |
| Bullhead Solar, LLC | Bullhead Solar, LLC | Fayette, MI | 4 GWh | Dec 2020 | Dec 2024 | Solar |
| Bulldog | Bulldog Wind Energy, LLC | Orient, IA | 4 GWh | Sep 2010 | Dec 2024 | Wind |
| Buffalo Ridge Wind | Buffalo Ridge Wind, LLC | Lake Benton, MN | 436 GWh | Nov 2022 | Oct 2025 | Wind |
| Buffalo Garden | Buffalo Garden LLC | Waseca, MN | 2 GWh | Feb 2020 | Dec 2024 | Solar |
| Buffalo Center Wind LLC | Buffalo Center Wind LLC | Little Cedar, IA | 5 GWh | Oct 2011 | Dec 2024 | Wind |
| B&K Energy Systems LLC | Brewster | Brewster, MN | 4 GWh | Nov 2003 | Dec 2024 | Wind |
| S&P Windfarm LLC | Brewster | Brewster, MN | 4 GWh | Nov 2003 | Dec 2024 | Wind |
| DL Windy Acres LLC | Brewster | Brewster, MN | 4 GWh | Nov 2003 | Dec 2024 | Wind |
| Brenda Luhman - CSG | Brenda Luhman Community Solar LLC | Zumbrota, MN | 2 GWh | Jul 2020 | Dec 2024 | Solar |
| Jack Fusco Energy Center | Brazos Valley Energy | Thompsons, TX | 3 TWh | Apr 2003 | Oct 2025 | Natural Gas |
| Brainerd Public Utilities | Brainerd Public Utilities | Brainerd, MN | 11 GWh | Dec 1916 | Dec 2023 | Water |
| Whiting Refinery | BP PLC | Whiting, IN | 360 GWh | Dec 1947 | Dec 2024 | Other Gas : 81.0% Natural Gas : 19.0% |
| Whiting Clean Energy | BP Alternative Energy | Whiting, IN | 3 TWh | Mar 2002 | Oct 2025 | Natural Gas |
| Bos Dairy, LLC | Bos Dairy, LLC | Fair Oaks, IN | 6 GWh | Dec 2004 | Dec 2024 | Natural Gas |
| Indianapolis Motor Speedway Solar PV | Boralex US Operations LLC | Indianapolis, IN | 13 GWh | May 2014 | Dec 2024 | Solar |
| International Falls Power | Boise White Paper LLC | International Falls, MN | 49 GWh | Dec 1923 | Oct 2025 | Water |
| Boise Cascade International Falls | Boise White Paper LLC | International Falls, MN | 337 GWh | Dec 1926 | Oct 2025 | Black Liquor : 63.8% Natural Gas : 22.3% Wood/Wood Waste Solids : 12.5% Sludge Waste : 1.3% |
| Boeve Windfarm LLC | Boeve Windfarm LLC | Woodstock, MN | 5 GWh | Jul 2003 | Dec 2024 | Wind |
| Muscatine Plant #1 | Board of Water Electric & Communications | Muscatine, IA | 727 GWh | Mar 1958 | Oct 2025 | Subbituminous Coal : 99.7% |
| Blue Water Renewables Inc | Blue Water Renewables Inc | Kimball Township, MI | 18 GWh | Nov 2011 | Dec 2024 | Landfill Gas |
| Blue Goose Solar CSG | Blue Goose Solar | Morrison, IL | 4 GWh | Nov 2020 | Dec 2024 | Solar |
| Blue Elk VII Solar, LLC | Blue Elk VII Solar, LLC | Flint, MI | 22 GWh | Oct 2023 | Dec 2024 | Solar |
| Blue Elk IV Solar, LLC | Blue Elk IV Solar, LLC | Adrian, MI | 38 GWh | Nov 2023 | Dec 2024 | Solar |
| Blue Elk III Solar, LLC | Blue Elk III Solar, LLC | Eaton Rapids, MI | 36 GWh | Nov 2023 | Dec 2024 | Solar |
| Blue Elk II Solar, LLC | Blue Elk II Solar, LLC | Mason, MI | 26 GWh | Apr 2024 | Dec 2024 | Solar |
| Blue Earth | Blue Earth Light & Water | Blue Earth, MN | 96 MWh | Oct 1960 | Dec 2024 | Distillate Fuel Oil |
| Blue Bird Solar, LLC | Blue Bird Solar, LLC | Warrenton, MO | 247 GWh | Nov 2024 | Oct 2025 | Solar |
| Black Oak Wind Farm | Black Oak Wind, LLC | Sauk Centre, MN | 298 GWh | Nov 2016 | Oct 2025 | Wind |
| Bisson Windfarm LLC | Bisson Windfarm LLC | Pipestone, MN | 288 MWh | Sep 2003 | Dec 2024 | Wind |
| Bishop Hill II Wind Farm | Bishop Hill Energy II, LLC | Cambridge, IL | 340 GWh | Sep 2012 | Dec 2024 | Wind |
| Birch | Birch Power LLC | Clearfield, IA | 7 GWh | Jan 2017 | Dec 2024 | Wind |
| Kimmel Road Solar, LLC | Birch Creek Power, LLC | Du Quoin, IL | 102 GWh | Sep 2024 | Oct 2025 | Solar |
| Salt Creek Township Solar, LLC | Birch Creek Power, LLC | Mason City, IL | 95 GWh | - | Oct 2025 | Solar |
| Earp Solar, LLC | Birch Creek Power, LLC | Monmouth, IL | 74 GWh | Mar 2024 | Oct 2025 | Solar |
| Richland Township Solar, LLC | Birch Creek Power, LLC | Washburn, IL | 68 GWh | - | Oct 2025 | Solar |
| Envoy Solar, LLC | Birch Creek Power, LLC | Mexico, MO | 86 GWh | - | Oct 2025 | Solar |
| Altona Solar, LLC | Birch Creek Power, LLC | Centralia, MO | 64 GWh | Jul 2024 | Oct 2025 | Solar |
| Archer Daniels Midland Peoria | BioUrja Renewables LLC | Peoria, IL | 79 GWh | Dec 1987 | Dec 2024 | Natural Gas |
| BioTown Ag | Bio Town Biogas, LLC | Reynolds, IN | 33 GWh | May 2011 | Dec 2024 | Other Biomass Gas |
| Billerud Quinnesec Mill | Billerud Quinnesec Mill | Norway, MI | 294 GWh | Sep 1985 | Dec 2024 | Black Liquor : 67.8% Wood/Wood Waste Solids : 30.2% Natural Gas : 1.9% |
| Escanaba Mill | Billerud Escanaba LLC | Escanaba, MI | 467 GWh | Dec 1968 | Oct 2025 | Black Liquor : 45.6% Natural Gas : 30.6% Wood/Wood Waste Solids : 23.1% Residual Fuel Oil : 0.7% |
| Settlers Trail Wind Farm LLC | Big Sky Wind, LLC | Sheldon, IL | 354 GWh | Sep 2011 | Dec 2024 | Wind |
| Pioneer Trail Wind Farm, LLC | Big Sky Wind, LLC | Paxton, IL | 459 GWh | Nov 2011 | Dec 2024 | Wind |
| R D Green | Big Rivers Electric Corp | Robards, KY | 694 GWh | Nov 1979 | Oct 2025 | Natural Gas |
| D B Wilson | Big Rivers Electric Corp | Centertown, KY | 2 TWh | Aug 1984 | Oct 2025 | Bituminous Coal : 99.3% Distillate Fuel Oil : 0.7% |
| Robert A Reid | Big Rivers Electric Corp | Robards, KY | 21 GWh | Dec 1965 | Aug 2024 | Natural Gas |
| Big River Solar | Big River Solar, LLC | Norris City, IL | 315 GWh | Jul 2022 | Oct 2025 | Solar |
| Big Lake Holdco Solar CSG | Big Lake Holdco LLC | Big Lake, MN | 8 GWh | Aug 2017 | Dec 2024 | Solar |
| Big Cypress Solar, LLC | Big Cypress Solar, LLC | Crawfordsville, AR | 421 GWh | Nov 2023 | Oct 2025 | Solar |
| Big Blue | Big Blue Wind Farm LLC (MN) | Blue Earth, MN | 70 GWh | Nov 2012 | Dec 2024 | Wind |
| Betcher Community Solar Garden | Betcher CSG LLC | Goodhue, MN | 2 GWh | Jul 2018 | Dec 2024 | Solar |
| Beloit Memorial Hospital Power Plant | Beloit Memorial Hospital | Beloit, WI | 71 MWh | May 2000 | Dec 2024 | Natural Gas : 72.9% Distillate Fuel Oil : 27.1% |
| Beebe 1A | Beebe Renewable Energy, LLC | Ithaca, MI | 187 GWh | Nov 2012 | Dec 2024 | Wind |
| Beebe 1B | Beebe 1B Renewable Energy, LLC | Ithaca, MI | 127 GWh | Nov 2014 | Dec 2024 | Wind |
| Bear Grove Solar | Bear Grove Solar, LLC | Byron, MN | 2 GWh | Jan 2023 | Dec 2024 | Solar |
| Adams Wind Generations LLC | BEAM US, LLC | Cosmos, MN | 46 GWh | Feb 2011 | Dec 2024 | Wind |
| Danielson Wind Farms LLC | BEAM US, LLC | Cosmos, MN | 47 GWh | Feb 2011 | Dec 2024 | Wind |
| Bayou Galion Solar Project | Bayou Galion Solar Project, LLC | Mer Rouge, LA | 230 GWh | Oct 2024 | Oct 2025 | Solar |
| Bayou Cove Peaking Power | Bayou Cove, LLC | Jennings, LA | 151 GWh | Jun 2002 | Oct 2025 | Natural Gas |
| CED Peoria Solar | Bay4 Energy Services, LLC | Mapleton, IL | 4 GWh | Apr 2021 | Dec 2024 | Solar |
| Geismar | BASF Corporation | Geismar, LA | 514 GWh | Jun 1985 | Dec 2024 | Natural Gas : 63.1% Other Gas : 36.9% |
| NAFTA Region Olefins Complex Cogen Fac | BASF Corp | Port Arthur, TX | 562 GWh | Jun 2001 | Dec 2024 | Natural Gas |
| Bancroft | Bancroft Municipal Utilities | Bancroft, IA | 96 MWh | Dec 1947 | Dec 2024 | Distillate Fuel Oil |
| Andresen Solar | Ballantyne LLC | Clara City, MN | 2 GWh | Dec 2022 | Dec 2024 | Solar |
| Baldwin Wind LLC | Baldwin Wind LLC | Wilton, ND | 381 GWh | Nov 2010 | Dec 2024 | Wind |
| Grinnell College | Azimuth 180 Solar Electric, LLC | Grinnell, IA | 2 GWh | Mar 2024 | Dec 2024 | Solar |
| Buffalo Ridge II LLC | Avangrid Power LLC | Elkton, SD | 468 GWh | Nov 2010 | Oct 2025 | Wind |
| New Harvest Wind Project LLC | Avangrid Power LLC | Schleswig, IA | 287 GWh | Nov 2011 | Dec 2024 | Wind |
| Elm Creek Wind II LLC | Avangrid Power LLC | Trimont, MN | 205 GWh | Nov 2010 | Dec 2024 | Wind |
| Barton Windpower LLC | Avangrid Power LLC | Kensett, IA | 361 GWh | May 2009 | Dec 2024 | Wind |
| Flying Cloud Power Partners LLC | Avangrid Power LLC | Lake Park, IA | 81 GWh | Nov 2003 | Dec 2024 | Wind |
| Moraine Wind LLC | Avangrid Power LLC | Woodstock, MN | 61 GWh | Nov 2003 | Dec 2024 | Wind |
| Rugby Wind Power Project | Avangrid Power LLC | Barton, ND | 335 GWh | Nov 2009 | Dec 2024 | Wind |
| Northern Iowa Windpower II | Avangrid Power LLC | Kensett, IA | 130 GWh | Dec 2007 | Dec 2024 | Wind |
| MinnDakota Wind LLC | Avangrid Power LLC | Ivanhoe, MN | 283 GWh | Dec 2007 | Dec 2024 | Wind |
| Moraine II Wind LLC | Avangrid Power LLC | Woodstock, MN | 73 GWh | Jan 2009 | Dec 2024 | Wind |
| Elm Creek Wind LLC | Avangrid Power LLC | Trimont, MN | 176 GWh | Nov 2008 | Dec 2024 | Wind |
| Buffalo Ridge I LLC | Avangrid Power LLC | Elkton, SD | 102 GWh | Mar 2009 | Oct 2025 | Wind |
| Trimont Area Wind Farm | Avangrid Power LLC | Trimont, MN | 379 GWh | Oct 2005 | Dec 2024 | Wind |
| Winnebago Wind Power Project | Avangrid Power LLC | Forest City, IA | 59 GWh | Aug 2008 | Dec 2024 | Wind |
| Farmers City Wind LLC | Avangrid Power LLC | Tarkio, MO | 246 GWh | Mar 2009 | Dec 2024 | Wind |
| August Wind Farm | August Wind Energy, LLC | Clearfield, IA | 6 GWh | Jan 2017 | Dec 2024 | Wind |
| Atlantic | Atlantic Municipal Utilities | Atlantic, IA | 110 MWh | Aug 1966 | Dec 2024 | Natural Gas |
| Atlantic Alumina, Gramercy Operations | Atalco Gramercy LLC | Gramercy, LA | 208 GWh | Jan 1958 | Dec 2024 | Natural Gas |
| Southwestern Bell Telephone | AT&T | St. Louis, MO | 112 MWh | Jan 1992 | Oct 2025 | Distillate Fuel Oil |
| Assembly Solar III | Assembly Solar III, LLC | Lennon, MI | 163 GWh | Dec 2021 | Oct 2025 | Solar |
| Assembly Solar II LLC | Assembly Solar II LLC | Lennon, MI | 224 GWh | Nov 2021 | Oct 2025 | Solar |
| Assembly Solar Project | Assembly Solar I, LLC | Venice Township, MI | 99 GWh | Nov 2020 | Oct 2025 | Solar |
| Odin Wind Farm LLC | Aspenall Energies (Delaware), LLC | Mountainlake, MN | 29 GWh | Apr 2008 | Dec 2024 | Wind |
| Ashtabula Wind II LLC | Ashtabula Wind II LLC | Luverne, ND | 328 GWh | Sep 2009 | Dec 2024 | Wind |
| Magnet Cove | Arkansas Electric Coop Corp | Malvern, AR | 4 TWh | Jun 2005 | Oct 2025 | Natural Gas |
| Whillock | Arkansas Electric Coop Corp | Morrilton, AR | 139 GWh | Sep 1993 | Dec 2024 | Water |
| McClellan (AR) | Arkansas Electric Coop Corp | Camden, AR | 43 GWh | Apr 1972 | Dec 2024 | Natural Gas : 92.3% Distillate Fuel Oil : 7.7% |
| Harry L. Oswald | Arkansas Electric Coop Corp | Little Rock, AR | 1 TWh | Jun 2002 | Dec 2024 | Natural Gas |
| Dam 2 | Arkansas Electric Coop Corp | Dumas, AR | 401 GWh | May 1999 | Dec 2024 | Water |
Surrounding Balancing Authorities
| Rank | Balancing Authority | Annual Net Generation | # Power Plants |
|---|---|---|---|
| #60 | Alcoa Power Generating, Inc. - Yadkin Division | 643.5 GWh | 4 |
| #27 | Associated Electric Cooperative, Inc. | 23.9 TWh | 47 |
| #13 | Duke Energy Carolinas | 111.6 TWh | 565 |
| #52 | Duke Energy Progress West | 4.3 TWh | 10 |
| #24 | Louisville Gas and Electric Company and Kentucky Utilities Company | 34.2 TWh | 25 |
| #1 | PJM Interconnection, LLC | 872.9 TWh | 2,465 |
| #6 | Southern Company Services, Inc. - Trans | 249.9 TWh | 417 |
| #5 | Southwest Power Pool | 300.6 TWh | 835 |
| #51 | Southwestern Power Administration | 5.0 TWh | 34 |
| #9 | Tennessee Valley Authority | 161.0 TWh | 204 |
Balancing Authorities with Similar Net Generation
| Rank | Balancing Authority | Annual Net Generation | # Power Plants |
|---|---|---|---|
| #1 | PJM Interconnection, LLC | 872.9 TWh | 2,465 |
| #2 | Midcontinent Independent System Operator, Inc. | 656.9 TWh | 2,831 |
| #3 | Electric Reliability Council of Texas, Inc. | 484.7 TWh | 1,313 |
| #5 | Southwest Power Pool | 300.6 TWh | 835 |
| #6 | Southern Company Services, Inc. - Trans | 249.9 TWh | 417 |
| #7 | California Independent System Operator | 184.8 TWh | 2,075 |
| #9 | Tennessee Valley Authority | 161.0 TWh | 204 |
| #10 | Florida Power & Light Co. | 149.6 TWh | 187 |
| #12 | New York Independent System Operator | 132.6 TWh | 1,211 |
| #13 | Duke Energy Carolinas | 111.6 TWh | 565 |