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 |
|---|---|---|---|---|---|---|
| Sunset Breeze LLC | Midwest Power Partners LLC | Rushmore, MN | 2 GWh | Apr 2006 | Dec 2024 | Wind |
| Windom Wind Project | Midwest Power Partners LLC | Bingham Lake, MN | 33 GWh | Feb 2006 | Dec 2024 | Wind |
| Minnesota Breeze LLC | Midwest Power Partners LLC | Rushmore, MN | 2 GWh | Apr 2006 | Dec 2024 | Wind |
| G Flow Wind LLC | Midwest Power Partners LLC | Rushmore, MN | 2 GWh | Apr 2006 | Dec 2024 | Wind |
| Wolf Wind Enterprises LLC | Midwest Power Partners LLC | Rushmore, MN | 2 GWh | Apr 2006 | Dec 2024 | Wind |
| Green Acres Breeze LLC | Midwest Power Partners LLC | Rushmore, MN | 2 GWh | Apr 2006 | Dec 2024 | Wind |
| Midland Cogeneration Venture | Midland Cogeneration Venture | Midland, MI | 10 TWh | May 1989 | Oct 2025 | Natural Gas |
| Middleton Biogas Solar, LLC | Middleton Biogas Solar, LLC | Middleton, WI | 2 GWh | Apr 2022 | Dec 2024 | Solar |
| Midcontinent Solar, LLC | Midcontinent Solar, LLC | Owosso, MI | 37 GWh | Sep 2023 | Dec 2024 | Solar |
| Arbor Hill Solar | MidAmerican Energy Co | Greenfield, IA | 45 GWh | Dec 2021 | Oct 2025 | Solar |
| Neal Energy Center Solar | MidAmerican Energy Co | Salix, IA | 7 GWh | Jan 2022 | Dec 2024 | Solar |
| Franklin County Solar | MidAmerican Energy Co | Hampton, IA | 12 GWh | Dec 2021 | Dec 2024 | Solar |
| Johnson County Hills Solar | MidAmerican Energy Co | Iowa City, IA | 6 GWh | Dec 2021 | Dec 2024 | Solar |
| Waterloo Solar (IA) | MidAmerican Energy Co | Waterloo, IA | 6 GWh | Feb 2022 | Dec 2024 | Solar |
| Chickasaw Wind Farm | MidAmerican Energy Co | New Hampton, IA | 641 GWh | Nov 2023 | Oct 2025 | Wind |
| Holliday Creek Solar | MidAmerican Energy Co | Fort Dodge, IA | 205 GWh | Jun 2022 | Oct 2025 | Solar |
| Plymouth Wind | MidAmerican Energy Co | Remsen, IA | 777 GWh | Dec 2021 | Oct 2025 | Wind |
| Ida Grove II | MidAmerican Energy Co | Ida Grove, IA | 713 GWh | Nov 2019 | Oct 2025 | Wind |
| Rolling Hills Wind Farm | MidAmerican Energy Co | Massena, IA | 2 TWh | Nov 2011 | Oct 2025 | Wind |
| Eclipse Wind Farm | MidAmerican Energy Co | Adair, IA | 814 GWh | Aug 2012 | Oct 2025 | Wind |
| Vienna Wind Farm | MidAmerican Energy Co | Marshalltown, IA | 398 GWh | Oct 2012 | Dec 2024 | Wind |
| Ivester Wind Farm | MidAmerican Energy Co | Wellsburg, IA | 320 GWh | Nov 2018 | Oct 2025 | Wind |
| Laurel Wind Farm | MidAmerican Energy Co | Laurel, IA | 463 GWh | Nov 2011 | Dec 2024 | Wind |
| Morning Light Wind Farm | MidAmerican Energy Co | Adair, IA | 413 GWh | Sep 2012 | Dec 2024 | Wind |
| Arbor Hill Wind Farm | MidAmerican Energy Co | Greenfield, IA | 1 TWh | Nov 2018 | Oct 2025 | Wind |
| Macksburg Wind Project | MidAmerican Energy Co | Macksburg, IA | 330 GWh | Nov 2014 | Dec 2024 | Wind |
| North English | MidAmerican Energy Co | Montezuma, IA | 1 TWh | Nov 2018 | Oct 2025 | Wind |
| Adams Wind | MidAmerican Energy Co | Lenox, IA | 474 GWh | Sep 2015 | Dec 2024 | Wind |
| Diamond Trail Wind Farm | MidAmerican Energy Co | Ladora, IA | 841 GWh | Nov 2020 | Oct 2025 | Wind |
| Southern Hills Wind Farm | MidAmerican Energy Co | Creston, IA | 813 GWh | Feb 2021 | Oct 2025 | Wind |
| Contrail Wind Farm | MidAmerican Energy Co | Bedford, IA | 313 GWh | Nov 2020 | Oct 2025 | Wind |
| O'Brien Wind | MidAmerican Energy Co | Primghar, IA | 876 GWh | Aug 2016 | Dec 2024 | Wind |
| Wellsburg Wind Project | MidAmerican Energy Co | Wellsburg, IA | 469 GWh | Nov 2014 | Dec 2024 | Wind |
| Ida Grove Wind | MidAmerican Energy Co | Ida Grove, IA | 1 TWh | Aug 2016 | Dec 2024 | Wind |
| Palo Alto Wind Farm | MidAmerican Energy Co | Emmetsburg, IA | 1 TWh | Dec 2019 | Oct 2025 | Wind |
| Lundgren Wind Project | MidAmerican Energy Co | Otho, IA | 804 GWh | Jul 2014 | Dec 2024 | Wind |
| Prairie Wind Farm | MidAmerican Energy Co | Montezuma, IA | 587 GWh | Dec 2017 | Oct 2025 | Wind |
| Highland Wind Project (IA) | MidAmerican Energy Co | Primghar, IA | 2 TWh | May 2015 | Oct 2025 | Wind |
| Beaver Creek Wind | MidAmerican Energy Co | Ogden, IA | 1 TWh | Nov 2017 | Oct 2025 | Wind |
| Pocahontas Prairie Wind Farm | MidAmerican Energy Co | Pomeroy, IA | 382 GWh | Jan 2012 | Dec 2024 | Wind |
| Orient Wind Farm | MidAmerican Energy Co | Orient, IA | 2 TWh | Nov 2018 | Oct 2025 | Wind |
| Louisa | MidAmerican Energy Co | Muscatine, IA | 4 TWh | Sep 1983 | Oct 2025 | Subbituminous Coal : 99.2% Natural Gas : 0.8% |
| Walnut Wind Farm | MidAmerican Energy Co | Walnut, IA | 584 GWh | Nov 2008 | Dec 2024 | Wind |
| Adair Wind Farm | MidAmerican Energy Co | Adair, IA | 555 GWh | Nov 2008 | Dec 2024 | Wind |
| Carroll Wind Farm | MidAmerican Energy Co | Carroll, IA | 563 GWh | Nov 2008 | Dec 2024 | Wind |
| Charles City Wind Farm | MidAmerican Energy Co | Charles City, IA | 274 GWh | Mar 2008 | Dec 2024 | Wind |
| Sycamore (IA) | MidAmerican Energy Co | Johnston, IA | 10 GWh | Jul 1974 | Dec 2024 | Natural Gas |
| Pleasant Hill | MidAmerican Energy Co | Pleasant Hill, IA | 22 GWh | May 1990 | Dec 2024 | Natural Gas : 99.9% |
| Intrepid | MidAmerican Energy Co | Schaller, IA | 549 GWh | Nov 2004 | Dec 2024 | Wind |
| Greater Des Moines | MidAmerican Energy Co | Pleasant Hill, IA | 2 TWh | Apr 2003 | Dec 2024 | Natural Gas |
| Century | MidAmerican Energy Co | Blairsburg, IA | 572 GWh | Aug 2005 | Dec 2024 | Wind |
| Victory Wind Farm | MidAmerican Energy Co | Westside, IA | 378 GWh | Nov 2006 | Dec 2024 | Wind |
| River Hills | MidAmerican Energy Co | Des Moines, IA | 1 GWh | Apr 1966 | Dec 2024 | Natural Gas |
| Moline | MidAmerican Energy Co | Moline, IL | 19 GWh | Dec 1941 | Dec 2024 | Water : 94.4% Natural Gas : 5.6% |
| George Neal South | MidAmerican Energy Co | Salix, IA | 2 TWh | Jun 1979 | Oct 2025 | Subbituminous Coal : 99.0% Distillate Fuel Oil : 1.0% |
| Pomeroy Wind Farm | MidAmerican Energy Co | Fonda, IA | 966 GWh | Nov 2007 | Oct 2025 | Wind |
| Electrifarm | MidAmerican Energy Co | Waterloo, IA | 11 GWh | Apr 1975 | Dec 2024 | Natural Gas |
| Knoxville Industrial | MidAmerican Energy Co | Knoxville, IA | 39 MWh | Mar 2000 | Dec 2024 | Distillate Fuel Oil |
| Coralville GT | MidAmerican Energy Co | Coralville, IA | 800 MWh | May 1970 | Dec 2024 | Natural Gas |
| Shenandoah | MidAmerican Energy Co | Shenandoah, IA | 44 MWh | Mar 2000 | Dec 2024 | Distillate Fuel Oil |
| Waterloo Lundquist | MidAmerican Energy Co | Waterloo, IA | 38 MWh | Mar 2000 | Dec 2024 | Distillate Fuel Oil |
| Merl Parr | MidAmerican Energy Co | Charles City, IA | 432 MWh | Apr 1969 | Dec 2024 | Natural Gas |
| George Neal North | MidAmerican Energy Co | Sergeant Bluff, IA | 2 TWh | Apr 1964 | Oct 2025 | Subbituminous Coal : 99.2% Natural Gas : 0.8% |
| Walter Scott Jr Energy Center | MidAmerican Energy Co | Council Bluffs, IA | 6 TWh | Feb 1954 | Oct 2025 | Subbituminous Coal : 99.0% Distillate Fuel Oil : 0.8% |
| Michigan Wind 2 | Michigan Wind 2, LLC | Minden City, MI | 327 GWh | Nov 2011 | Dec 2024 | Wind |
| Michigan Wind 1 | Michigan Wind 1, LLC | Ubly, MI | 158 GWh | Nov 2008 | Dec 2024 | Wind |
| MSC Croswell | Michigan Sugar Company | Croswell, MI | 36 MWh | Sep 1948 | Jan 2025 | Natural Gas |
| MSC Sebewaing | Michigan Sugar Company | Sebewaing, MI | 569 MWh | Sep 1979 | Mar 2025 | Bituminous Coal : 71.0% Natural Gas : 29.0% |
| T B Simon Power Plant | Michigan State University | East Lansing, MI | 247 GWh | Nov 1965 | Oct 2025 | Natural Gas |
| Kalkaska CT #1 | Michigan Public Power Agency | Kalkaska, MI | 48 GWh | Nov 2002 | Dec 2024 | Natural Gas |
| Michigan Power LP | Michigan Power Limited Partnership | Ludington, MI | 1 TWh | Sep 1995 | Dec 2024 | Natural Gas |
| Michelangelo Wind 4 LLC | Michelangelo Wind 4 LLC | Ames, IA | 10 GWh | Nov 2016 | Dec 2024 | Wind |
| Michelangelo Wind 3 LLC | Michelangelo Wind 3 LLC | Huxley, IA | 9 GWh | Jan 2017 | Dec 2024 | Wind |
| Michelangelo Wind 1 LLC | Michelangelo Wind 1 LLC | Huxley, IA | 8 GWh | Feb 2017 | Dec 2024 | Wind |
| St. Paul Intl Airport Red & Blue Parking | Metropolitan Airports Commission | St. Paul, MN | 3 GWh | Nov 2015 | Oct 2025 | Solar |
| Melrose 2 | Melrose Public Utilities | Melrose, MN | 3 MWh | Feb 2014 | Dec 2024 | Distillate Fuel Oil |
| Melrose | Melrose Public Utilities | Melrose, MN | 49 MWh | Jun 1945 | Dec 2024 | Distillate Fuel Oil |
| Medin 2 Community Solar LLC CSG | Medin 2 Community Solar LLC | Center City, MN | 2 GWh | Jul 2021 | Dec 2024 | Solar |
| Mankato Energy Center | MEC Holdings, LLC | Mankato, MN | 3 TWh | Jun 2006 | Dec 2024 | Natural Gas |
| New Frontier Wind | Meadowlark Wind I LLC | Ruso, ND | 390 GWh | Nov 2018 | Oct 2025 | Wind |
| Meadow Ridge | Meadow Ridge Wind Energy, LLC | Greenfield, IA | 5 GWh | Jun 2012 | Dec 2024 | Wind |
| Meadow Lake Wind Farm VI LLC | Meadow Lake Wind Farm VI LLC | Remington, IN | 641 GWh | Oct 2018 | Oct 2025 | Wind |
| Indiana Crossroads Solar Park | Meadow Lake Solar Park | Reynolds, IN | 372 GWh | May 2023 | Oct 2025 | Solar |
| Combined Locks Energy Center | McKinley Paper | Combined Locks, WI | 310 GWh | Apr 2002 | Dec 2024 | Natural Gas |
| McDonough Solar 1, LLC CSG | McDonough Solar 1, LLC | Blandinsville, IL | 4 GWh | Nov 2020 | Dec 2024 | Solar |
| May Shannon Solar, LLC | May Shannon Solar, LLC | Clio, MI | 4 GWh | Nov 2020 | Dec 2024 | Solar |
| Maston Garden Solar | Maston Garden LLC | Kasson, MN | 2 GWh | Apr 2020 | Dec 2024 | Solar |
| Marshall Wind 6 LLC | Marshall Wind Farm, LLC | Marshall, MN | 3 GWh | Nov 2007 | Dec 2024 | Wind |
| Marshall Wind 5 LLC | Marshall Wind Farm, LLC | Marshall, MN | 2 GWh | Nov 2007 | Dec 2024 | Wind |
| Marshall Wind 4 LLC | Marshall Wind Farm, LLC | Marshall, MN | 6 GWh | Nov 2007 | Dec 2024 | Wind |
| Marshall Wind 3 LLC | Marshall Wind Farm, LLC | Marshall, MN | 6 GWh | Nov 2007 | Dec 2024 | Wind |
| Marshall Wind 1 LLC | Marshall Wind Farm, LLC | Marshall, MN | 3 GWh | Nov 2007 | Dec 2024 | Wind |
| Marshall Wind 2 LLC | Marshall Wind Farm, LLC | Marshall, MN | 6 GWh | Nov 2007 | Dec 2024 | Wind |
| Marshall Solar Energy Project | Marshall Solar Energy Project | Marshall, MN | 95 GWh | Dec 2016 | Oct 2025 | Solar |
| Marlow Solar, LLC CSG | Marlow Solar, LLC | Bluford, IL | 4 GWh | Nov 2020 | Dec 2024 | Solar |
| Marion Solar LNG | Marion Solar LLC | Indianapolis, IN | 2 GWh | Sep 2015 | Dec 2024 | Solar |
| Belmont | Marion Solar LLC | Indianapolis, IN | 5 GWh | Oct 2015 | Dec 2024 | Solar |
| Mapleton Community Solar | Mapleton Community Solar | Mapleton, MN | 5 GWh | May 2017 | Dec 2024 | Solar |
| Custer Energy Center | Manitowoc Public Utilities | Manitowoc, WI | 6 GWh | May 1999 | Dec 2024 | Natural Gas |
| Manitowoc | Manitowoc Public Utilities | Manitowoc, WI | 191 GWh | May 1955 | Oct 2025 | Wood/Wood Waste Solids : 91.6% Petroleum Coke : 4.6% Bituminous Coal : 3.4% |
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 |