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 |
|---|---|---|---|---|---|---|
| Lennon Generating | North American Natural Res | Lennon, MI | 26 GWh | Jan 2001 | Dec 2025 | Landfill Gas |
| Lenox | City of Lenox - (IA) | Lenox, IA | 55 MWh | Aug 1948 | Dec 2025 | Distillate Fuel Oil |
| Leo Community Solar | Geronimo Power | Hadley, MN | 2 GWh | Nov 2018 | Dec 2025 | Solar |
| Leonardo Wind 1 LLC | Novis Renewables, LLC | Alden, IA | 9 GWh | Nov 2016 | Dec 2025 | Wind |
| LeSun CSG, LLC | SunStrong Management, LLC | Waterville, MN | 8 GWh | Dec 2017 | Dec 2025 | Solar |
| Letts Creek Solar, LLC | AES Distributed Energy | Grass Lake, MI | 25 GWh | Nov 2022 | Dec 2025 | Solar |
| Leven Garden Solar | Leven Garden LLC | Villard, MN | 2 GWh | Apr 2020 | Dec 2025 | Solar |
| Lewis & Clark | Montana-Dakota Utilities Co | Richland, MT | 12 GWh | Sep 1958 | May 2026 | Natural Gas |
| Lewis Creek | Entergy Texas Inc. | Willis, TX | 2 TWh | Nov 1970 | May 2026 | Natural Gas |
| Liberty County Solar Project | Liberty County Solar Project, LLC | Dayton, TX | 248 GWh | Aug 2024 | May 2026 | Solar |
| Liberty I & II LFGTE | Wabash Valley Power Assn, Inc | Monticello, IN | 10 MWh | Jul 2005 | Dec 2025 | Landfill Gas |
| Liberty Pole DPC Solar | SoCore Energy LLC | Viroqua, WI | 2 GWh | Apr 2017 | May 2026 | Solar |
| Libra Community Solar | Geronimo Power | Glenwood, MN | 2 GWh | Oct 2018 | Dec 2025 | Solar |
| Lightfoot Solar, LLC | Lightfoot Solar, LLC | Luzerne, MI | 18 GWh | Sep 2023 | Dec 2025 | Solar |
| Lily Garden | Lily Garden LLC | Waseca, MN | 2 GWh | Jun 2023 | Dec 2025 | Solar |
| Lime Creek | Interstate Power and Light Co | Mason City, IA | 1 GWh | Apr 1991 | Dec 2025 | Distillate Fuel Oil |
| Lincoln Heights I | ALLETE Clean Energy | Lake Benton, MN | 8 GWh | Apr 2006 | Dec 2025 | Wind |
| Lincoln Heights II | ALLETE Clean Energy | Lake Benton, MN | 5 GWh | Apr 2006 | Dec 2025 | Wind |
| Lincoln Land Wind | Lincoln Land Wind, LLC | TBD, IL | 1 TWh | Oct 2021 | May 2026 | Wind |
| Lincoln Solar | Ecos Energy LLC | Merrillville, IN | 2 GWh | Nov 2012 | Dec 2025 | Solar |
| Lind Solar CSG | Terraform Arcadia | Young America, MN | 8 GWh | Jan 2017 | Dec 2025 | Solar |
| Linden 01 CSG | SunShare Management | Belle Plaine, MN | 2 GWh | Apr 2020 | Dec 2024 | Solar |
| Linden 02 CSG | SunShare Management | Belle Plaine, MN | 2 GWh | Apr 2020 | Dec 2024 | Solar |
| Linden 03 CSG | SunShare Management | Belle Plaine, MN | 2 GWh | Apr 2020 | Dec 2024 | Solar |
| Lindstrom Solar CSG | Geronimo Power | Lindstrom, MN | 5 GWh | Mar 2018 | Dec 2025 | Solar |
| Lineage MS | Madison Energy Holdings LLC | Richland, MS | 971 MWh | Nov 2021 | Sep 2025 | Solar |
| Linton | Indiana Municipal Power Agency | Linton, IN | 10 GWh | Jun 2022 | Dec 2025 | Solar |
| Litchfield | Litchfield Public Utilities | Litchfield, MN | 861 MWh | Aug 1963 | Dec 2025 | Distillate Fuel Oil : 54.6% Natural Gas : 45.4% |
| Little Cedar | OneEnergy, Inc. | Little Cedar, IA | 65 MWh | Nov 2025 | Dec 2025 | Solar |
| Little Chute | City of Kaukauna (WI) | Combined Locks, WI | 22 GWh | May 1948 | Dec 2025 | Water |
| Little Falls (MN) | ALLETE, Inc. | Little Falls, MN | 27 GWh | Dec 1905 | Dec 2025 | Water |
| Little Gypsy | Entergy Louisiana LLC | La Place, LA | 964 GWh | Feb 1961 | May 2026 | Natural Gas |
| Little Quinnesec Falls Hydro Project | Eagle Creek Renewable Energy, LLC | Niagara, WI | 61 GWh | Nov 1900 | Dec 2025 | Water |
| Livingston Generating Station | CMS Generation MI Power LLC | Gaylord, MI | 22 GWh | May 1999 | Dec 2025 | Natural Gas |
| Lobelia 1 | Greenbacker Renewable Energy Corporation | Harvard, IL | 5 GWh | Nov 2024 | Dec 2025 | Solar |
| Logansport Solar | Cardinal Renewables | Logansport, IN | 20 GWh | Aug 2021 | Dec 2025 | Solar |
| Long Lake Solar, LLC | Long Lake Solar, LLC | West Helena, AR | 492 GWh | Mar 2025 | May 2026 | Solar |
| Loon Garden | Loon Garden LLC | Waseca, MN | 2 GWh | Jan 2020 | Dec 2025 | Solar |
| Lorin Industries | Lorin Industries | Muskegon, MI | 4 GWh | Dec 1989 | Dec 2025 | Natural Gas |
| Lost Lakes Wind Farm LLC | Lost Lakes Wind Farm LLC | Lake Park, IA | 270 GWh | Nov 2009 | Dec 2025 | Wind |
| Lotus Wind | Lotus Wind, LLC | Modesto, IL | 135 GWh | - | May 2026 | Wind |
| Loud | Consumers Energy Co - (MI) | Oscoda, MI | 16 GWh | Dec 1912 | Dec 2025 | Water |
| Louisa | MidAmerican Energy Co | Muscatine, IA | 4 TWh | Sep 1983 | May 2026 | Subbituminous Coal : 99.3% Natural Gas : 0.7% |
| Louise Solar | Geronimo Power | Taopi, MN | 91 GWh | Nov 2024 | May 2026 | Solar |
| Louisiana 1 | Entergy Louisiana LLC | Baton Rouge, LA | 3 TWh | Sep 1951 | May 2026 | Natural Gas : 71.5% Other Gas : 28.5% |
| Louisiana Sugar Refining | Louisiana Sugar Refining LLC | Gramercy, LA | 9 GWh | Aug 1930 | Dec 2025 | Natural Gas |
| Louisiana Tech University Power Plant | Louisiana Tech University | Ruston, LA | 49 GWh | Jun 2004 | Dec 2025 | Natural Gas |
| Lowe's - 1845 - Chicago Brickyard, IL | North Narragansett Avenue Solar Project 2022, LLC | Chicago, IL | 1 GWh | Jan 2025 | Dec 2025 | Solar |
| Lowry CSG2, LLC | Nautilus Solar Solutions | Glenwood, MN | 2 GWh | Nov 2020 | Dec 2025 | Solar |
| LRWRA | Entegrity Solar LRWRA, LLC | Little Rock, AR | 2 GWh | Jul 2023 | Dec 2024 | Solar |
| LSP-Cottage Grove LP | Cottage Grove Operating Services LLC | Cottage Grove, MN | 549 GWh | Sep 1997 | Dec 2025 | Natural Gas |
| LSU Cogen | LSU and A&M College | Baton Rouge, LA | 98 GWh | Nov 2004 | May 2026 | Natural Gas |
| Luck | OneEnergy, Inc. | Luck, WI | 85 MWh | Nov 2025 | Dec 2025 | Solar |
| Lucky Wind | Lucky Wind, LLC (Longroad) | Pipestone, MN | 3 GWh | Nov 2004 | Dec 2025 | Wind |
| Lukuc B Community Solar LLC CSG | Lukuc B Community Solar LLC | Herrin, IL | 4 GWh | Jun 2021 | Dec 2025 | Solar |
| Lundgren Wind Project | MidAmerican Energy Co | Otho, IA | 605 GWh | Jul 2014 | Dec 2025 | Wind |
| Luther College Wind Project | Luther College Wind Energy Project LLC | Decorah, IA | 2 GWh | Sep 2011 | Dec 2025 | Wind |
| Luverne Wind Energy Center | Otter Tail Power Co | Luverne, ND | 151 GWh | Aug 2009 | Dec 2025 | Wind |
| Lyman Garden | Excelsior Energy Capital | Northfield, MN | 2 GWh | Oct 2020 | Dec 2025 | Solar |
| Lyons Road | Lyons Road Solar, LLC | Owosso, MI | 41 GWh | Dec 2021 | Dec 2025 | Solar |
| Lyra Community Solar | Lyra Community Solar | Waterville, MN | 5 GWh | Jan 2018 | Dec 2025 | Solar |
| M. G. Emmett J. Bean Federal Center | U.S. General Services Administration | Indianapolis, IN | 519 MWh | Mar 2011 | Dec 2024 | Solar |
| M L Hibbard | ALLETE, Inc. | Duluth, MN | 98 GWh | May 1949 | May 2026 | Wood/Wood Waste Solids : 91.1% Subbituminous Coal : 6.8% Natural Gas : 2.1% |
| M72 West Solar | Heritage Sustainable Energy. LLC | Traverse City, MI | 2 GWh | Nov 2019 | Dec 2025 | Solar |
| Macbeth Solar | Macbeth Solar, LLC | Montague, MI | 38 GWh | Apr 2022 | Dec 2025 | Solar |
| Macksburg Wind Project | MidAmerican Energy Co | Macksburg, IA | 249 GWh | Nov 2014 | Dec 2025 | Wind |
| Macomb 2A | SoCore Energy LLC | Macomb, IL | 4 GWh | Nov 2024 | Dec 2025 | Solar |
| Macon County IL S1 | SolAmerica Energy, LLC | Decatur, IL | 316 MWh | Sep 2025 | Dec 2025 | Solar |
| Magnet Cove | Arkansas Electric Coop Corp | Malvern, AR | 4 TWh | Jun 2005 | May 2026 | Natural Gas |
| Magnolia Power | Magnolia Power Holdings LLC | Plaquemine, LA | 2 TWh | Nov 2025 | May 2026 | Natural Gas |
| Malmedal Solar Garden | Altus Power America Management, LLC | Starbuck, MN | 2 GWh | Jun 2019 | Dec 2025 | Solar |
| Manistique | Cloverland Electric Co-op | Manistique, MI | 1 GWh | Jun 1960 | Dec 2025 | Distillate Fuel Oil |
| Manitowoc | Manitowoc Public Utilities | Manitowoc, WI | 178 GWh | May 1955 | May 2026 | Wood/Wood Waste Solids : 88.2% Petroleum Coke : 6.6% Bituminous Coal : 4.9% |
| Mankato Energy Center | MEC Holdings, LLC | Mankato, MN | 3 TWh | Jun 2006 | Dec 2025 | Natural Gas |
| Mansfield Mill | IPC-Mansfield Mill | Mansfield, LA | 855 GWh | Sep 1981 | May 2026 | Natural Gas : 52.4% Black Liquor : 33.9% Wood/Wood Waste Solids : 12.4% Tire-derived Fuels : 1.4% |
| Maple Flats | Invenergy Services LLC | Louisville, IL | 503 GWh | Oct 2024 | May 2026 | Solar |
| Maple Lake | Great River Energy | Maple Lake, MN | 321 MWh | Apr 1978 | Dec 2025 | Distillate Fuel Oil |
| Mapleton Community Solar | Mapleton Community Solar | Mapleton, MN | 5 GWh | May 2017 | Dec 2025 | Solar |
| Marathon Petroleum - Robinson Refinery | Onyx Asset Services Group | Robinson, IL | 5 GWh | May 2025 | Dec 2025 | Solar |
| Marceline | City of Marceline - (MO) | Marceline, MO | 20 MWh | Jul 1989 | Dec 2025 | Distillate Fuel Oil |
| Marigold Community Solar Garden, LLC | Geronimo Power | Waterville, MN | 2 GWh | Dec 2020 | 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% |
| Marion Garden | Excelsior Energy Capital | Faribault, MN | 2 GWh | Oct 2020 | Dec 2025 | Solar |
| Marion Solar 2 | Pivot Energy | Sandoval, IL | 2 GWh | Dec 2024 | Dec 2025 | Solar |
| Marion Solar 4b LLC | Pivot Energy | Sandoval, IL | 4 GWh | Apr 2024 | Dec 2025 | Solar |
| Marion Solar LNG | Marion Solar LLC | Indianapolis, IN | 2 GWh | Sep 2015 | Dec 2025 | Solar |
| Markland | Duke Energy Indiana, LLC | Florence, IN | 253 GWh | Dec 1966 | Dec 2025 | Water |
| Marlow Solar, LLC CSG | Marlow Solar, LLC | Bluford, IL | 4 GWh | Nov 2020 | Dec 2025 | Solar |
| Marmas Solar CSG | Geronimo Power | St. Cloud, MN | 5 GWh | Mar 2018 | Dec 2025 | Solar |
| Marquette Energy Center | City of Marquette - (MI) | Marquette, MI | 164 GWh | Jul 2017 | Dec 2025 | Natural Gas : 98.9% Distillate Fuel Oil : 1.1% |
| Marshall (IL) | City of Marshall - (IL) | Marshall, IL | 167 MWh | Mar 2002 | Dec 2025 | Distillate Fuel Oil |
| Marshall (MI) | City of Marshall - (MI) | Marshall, MI | 638 MWh | May 1928 | Dec 2025 | Water |
| Marshall (MN) | City of Marshall - (MN) | Marshall, MN | 93 MWh | Jun 1969 | Dec 2025 | Distillate Fuel Oil |
| Marshall Solar Energy Project | Marshall Solar Energy Project | Marshall, MN | 92 GWh | Dec 2016 | May 2026 | Solar |
| Marshall Solar Plus LLC | Western Minnesota Mun Pwr Agny | Marshall, MN | 17 GWh | Nov 2024 | Dec 2025 | Solar |
| Marshall Wind 1 LLC | Marshall Wind Farm, LLC | Marshall, MN | 1 GWh | Nov 2007 | Dec 2025 | Wind |
| Marshall Wind 2 LLC | Marshall Wind Farm, LLC | Marshall, MN | 5 GWh | Nov 2007 | Nov 2025 | Wind |
| Marshall Wind 3 LLC | Marshall Wind Farm, LLC | Marshall, MN | 4 GWh | Nov 2007 | Dec 2025 | Wind |
| Marshall Wind 4 LLC | Marshall Wind Farm, LLC | Marshall, MN | 4 GWh | Nov 2007 | Dec 2025 | Wind |
| Marshall Wind 5 LLC | Marshall Wind Farm, LLC | Marshall, MN | 2 GWh | Nov 2007 | Dec 2025 | 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 |