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 |
|---|---|---|---|---|---|---|
| Little Falls (MN) | ALLETE, Inc. | Little Falls, MN | 32 GWh | Dec 1905 | Dec 2024 | Water |
| Norway (MI) | City of Norway | Norway, MI | 27 GWh | May 1905 | Dec 2024 | Water |
| Wisconsin Rapids | Consolidated Water Power Co | Wisconsin Rapids, WI | 50 GWh | Dec 1902 | Dec 2024 | Water |
| Edison Sault | Cloverland Electric Co-op | Sault Ste. Marie, MI | 199 GWh | Jun 1901 | Dec 2024 | Water |
| Apple River | Northern States Power Co - Minnesota | Somerset, WI | 13 GWh | Dec 1900 | Dec 2024 | Water |
| Little Quinnesec Falls Hydro Project | Eagle Creek Renewable Energy, LLC | Niagara, WI | 57 GWh | Nov 1900 | Dec 2024 | Water |
| Biron | Consolidated Water Power Co | Biron, WI | 31 GWh | Dec 1895 | Dec 2024 | Water |
| Whiting | Consolidated Water Power Co | Whiting, WI | 25 GWh | Dec 1890 | Dec 2024 | Water |
| Panther Creek Wind Project | Greenbacker Renewable Energy Corporation | Pittsfield, IL | 100 GWh | - | Oct 2025 | Wind |
| Calhoun County Solar Project | AES Clean Energy | Sheridan Township, MI | 198 GWh | - | Oct 2025 | Solar |
| Darien Solar | Wisconsin Electric Power Co | Darien, WI | 292 GWh | - | Oct 2025 | Solar |
| Speedway Solar, LLC | Speedway Solar, LLC | Morrison Town, IN | 182 GWh | - | Oct 2025 | Solar |
| Envoy Solar, LLC | Birch Creek Power, LLC | Mexico, MO | 86 GWh | - | Oct 2025 | Solar |
| Richland Township Solar, LLC | Birch Creek Power, LLC | Washburn, IL | 68 GWh | - | Oct 2025 | Solar |
| Salt Creek Township Solar, LLC | Birch Creek Power, LLC | Mason City, IL | 95 GWh | - | Oct 2025 | Solar |
| Long Lake Solar, LLC | Long Lake Solar, LLC | West Helena, AR | 324 GWh | - | Oct 2025 | Solar |
| Winfield Solar | Winfield Solar I, LLC | Winfield, MO | 160 GWh | - | Oct 2025 | Solar |
| Posey Solar | Southern Indiana Gas & Elec Co | Mount Vernon, IN | 238 GWh | - | Oct 2025 | Solar |
| Quartz Solar, LLC | Quartz Solar, LLC | Wynne, AR | 232 GWh | - | Oct 2025 | Solar |
| Flat Fork Solar | Flat Fork Solar, LLC | Wheatley, AR | 102 GWh | - | Oct 2025 | Solar |
| Amite Solar, LLC | Amite Solar, LLC | Roseland, LA | 153 GWh | - | Oct 2025 | Solar |
| Unbridled Solar | National Grid Renewables | Robards, KY | 256 GWh | - | Oct 2025 | Solar |
| Polaris Solar Park | DTE Electric Company | Ashley, MI | 46 GWh | - | Oct 2025 | Solar |
| Fairbanks Solar Project | Fairbanks Solar Energy Center LLC | Fairbanks, IN | 314 GWh | - | Oct 2025 | Solar |
| Sebree Solar, LLC - Hybrid | Sebree Solar, LLC | Robards, KY | 83 GWh | - | Oct 2025 | Solar |
| Sherco Solar II | Northern States Power Co - Minnesota | Becker, MN | 49 GWh | - | Oct 2025 | Solar |
| Appleseed Solar | Appleseed Solar, LLC | Logansport, IN | 75 GWh | - | Oct 2025 | Solar |
| Gibson Solar | Gibson Solar, LLC | Princeton, IN | 109 GWh | - | Oct 2025 | Solar |
| Crossover Wind | Crossover Wind, LLC | Wynne, AR | 91 GWh | - | Oct 2025 | Wind |
| Green River Solar | Green River Solar, LLC | Guston, KY | 235 GWh | - | Oct 2025 | Solar |
| Prosperity Wind | Prosperity Wind, LLC | Deland, IL | 472 GWh | - | Oct 2025 | Wind |
| Coldwater River Solar | Coldwater River Solar, LLC | Coldwater, MI | 32 GWh | - | Oct 2025 | Solar |
| RATTS 1 | Ratts 1 Solar LLC | Petersburg, IN | 24 GWh | - | Oct 2025 | Solar |
| Heirloom Solar | Heirloom Solar (Ratts 1 Phase 2 Solar, LLC) | Petersburg, IN | 8 GWh | - | Oct 2025 | Solar |
| Dunns Bridge II Solar | Dunns Bridge II Solar and Storage Generation LLC | San Pierre, IN | 738 GWh | - | Oct 2025 | Solar |
| Pine River Solar Park | DTE Electric Company | Alma, MI | 67 GWh | - | Oct 2025 | Solar |
| Sauk Solar Park | DTE Electric Company | Union City, MI | 188 GWh | - | Oct 2025 | Solar |
| Morris Solar | AES Clean Energy | Kirksville, MO | 202 GWh | - | Oct 2025 | Solar |
| Eldorado Solar I | Sol Systems | Eldorado, IL | 282 GWh | - | Oct 2025 | Solar |
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 |