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 | Nov 2025 |
| Annual Generation | 655.1 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 | 35.7% Coal | 29% Wind | 14.9% Nuclear | 13.9% Solar | 4.5% 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 |
|---|---|---|---|---|---|---|
| Winters Spawn LLC | CHI Operations Inc | Lake Benton, MN | 5 GWh | Dec 2000 | Dec 2024 | Wind |
| Winterset | City of Winterset - (IA) | Winterset, IA | 35 MWh | Jun 1956 | Dec 2024 | Natural Gas : 55.9% Distillate Fuel Oil : 44.1% |
| Winton | ALLETE, Inc. | Winton, MN | 10 GWh | Jul 1923 | Dec 2024 | Water |
| Wiota | Wiota Wind Energy, LLC #1 | Wiota, IA | 4 GWh | Apr 2012 | Dec 2024 | Wind |
| Wisconsin Rapids | Consolidated Water Power Co | Wisconsin Rapids, WI | 50 GWh | Dec 1902 | Dec 2024 | Water |
| Wissota | Northern States Power Co - Minnesota | Chippewa Falls, WI | 136 GWh | Dec 1916 | Dec 2024 | Water |
| Wolf River (Chipewa 1) | Greenbacker Renewable Energy Corporation | Stanley, WI | 2 GWh | Jan 2024 | Dec 2024 | Solar |
| Wolf Run Solar | Wolf Run Solar LLC | Chapin, IL | 309 GWh | Oct 2024 | Sep 2025 | Solar |
| Wolf Wind Enterprises LLC | Midwest Power Partners LLC | Rushmore, MN | 2 GWh | Apr 2006 | Dec 2024 | Wind |
| Wollan Garden Solar | Wollan Garden LLC | Starbuck, MN | 1 GWh | Jun 2019 | Dec 2024 | Solar |
| Wolverine | Wolverine Wind Energy, LLC | Greenfield, IA | 5 GWh | Sep 2010 | Dec 2024 | Wind |
| Wolverine Solar | Wolverine Solar, LLC | Maynard, MN | 2 GWh | Oct 2023 | Dec 2024 | Solar |
| Wood County | Wisconsin Power & Light Co | Nekoosa, WI | 277 GWh | Nov 2022 | Sep 2025 | Solar |
| Woodbury Solar | MN CSG 2, LLC | Woodbury, MN | 4 GWh | Jun 2020 | Dec 2024 | Solar |
| Woodruff County Solar | Arkansas Electric Coop Corp | Augusta, AR | 219 GWh | Sep 2024 | Sep 2025 | Solar |
| Woodruff Electric Cooperative | Today's Power, Inc. | Forrest City, AR | 2 GWh | Apr 2019 | Dec 2024 | Solar |
| Woodstock Windfarm | Consolidated Edison Development Inc. | Woodstock, MN | 28 GWh | Apr 1999 | Dec 2024 | Wind |
| Workman Road Solar Farm, LLC | Workman Road Solar Farm, LLC | Lake City, MI | 4 GWh | Nov 2020 | Dec 2024 | Solar |
| Worthington | City of Worthington - (MN) | Worthington, MN | 9 GWh | Jan 2002 | Dec 2024 | Wind : 98.9% Distillate Fuel Oil : 1.1% |
| Worthington Generation LLC | Hoosier Energy R E C, Inc | Worthington, IN | 195 GWh | May 2000 | Dec 2024 | Natural Gas |
| Wright Cuddyer CSG | Minnesota Solar CSG 1, LLC | St. Michael, MN | 5 GWh | Sep 2018 | Dec 2024 | Solar |
| Wright Kirby 1-5 CSG | Standard Solar | Monticello, MN | 7 GWh | May 2019 | Dec 2024 | Solar |
| WrightSun CSG, LLC | Cypress Creek Renewables | St. Michael, MN | 6 GWh | Dec 2017 | Dec 2024 | Solar |
| Wyandotte | Wyandotte Municipal Serv Comm | Wyandotte, MI | 89 MWh | Dec 1947 | Jun 2025 | Distillate Fuel Oil |
| Wyoming 2 CSG, LLC | Ecoplexus, Inc | Wyoming, MN | 8 GWh | Feb 2018 | Dec 2024 | Solar |
| Yorktown 1 Solar | SoCore Energy LLC | Lyndon, IL | 2 GWh | Dec 2023 | Dec 2024 | Solar |
| Yorktown 2 Solar | SoCore Energy LLC | Lyndon, IL | 2 GWh | Dec 2023 | Dec 2024 | Solar |
| Zeeland Farm Services | Zeeland Farm Services | Zeeland, MI | 13 GWh | Feb 2006 | Dec 2023 | Other Biomass Gas |
| Zeeland Generating Station | Consumers Energy Co - (MI) | Zeeland, MI | 5 TWh | May 2001 | Sep 2025 | Natural Gas |
| Zeuber | Today's Power, Inc. | Little Rock, AR | 7 GWh | Nov 2023 | Dec 2024 | Solar |
| Zimmerman Energy | Landfill Energy Systems | Argos, IN | 40 GWh | Oct 2014 | Sep 2025 | Landfill Gas |
| Zumbro Community Solar Garden | Zumbro Solar LLC | Zumbrota, MN | 2 GWh | Mar 2018 | Dec 2024 | Solar |
| Zumbro Solar Garden | Zumbro Garden LLC | Kasson, MN | 2 GWh | Mar 2020 | Dec 2024 | Solar |
| 13 Mile Solar, LLC | 13 Mile Solar, LLC | Battle Creek, MI | 4 GWh | Nov 2020 | Dec 2024 | Solar |
| 2662 Freeport Solar 1 CSG | 2662 Freeport Solar 1, LLC | Freeport, IL | 4 GWh | Nov 2020 | Dec 2024 | Solar |
| 4710 Hosting | Epic Hosting, LLC | Rochester, MN | 29 MWh | May 2012 | Dec 2024 | Distillate Fuel Oil |
| 491 E 48th Street | City of Holland | Holland, MI | 92 GWh | Apr 1992 | Dec 2024 | Natural Gas |
Surrounding Balancing Authorities
| Rank | Balancing Authority | Annual Net Generation | # Power Plants |
|---|---|---|---|
| #61 | Alcoa Power Generating, Inc. - Yadkin Division | 696.7 GWh | 4 |
| #27 | Associated Electric Cooperative, Inc. | 23.6 TWh | 47 |
| #13 | Duke Energy Carolinas | 112.5 TWh | 565 |
| #52 | Duke Energy Progress West | 4.3 TWh | 10 |
| #24 | Louisville Gas and Electric Company and Kentucky Utilities Company | 34.4 TWh | 25 |
| #1 | PJM Interconnection, LLC | 870.7 TWh | 2,465 |
| #6 | Southern Company Services, Inc. - Trans | 250.9 TWh | 417 |
| #5 | Southwest Power Pool | 299.9 TWh | 835 |
| #49 | Southwestern Power Administration | 5.2 TWh | 34 |
| #9 | Tennessee Valley Authority | 161.6 TWh | 204 |
Balancing Authorities with Similar Net Generation
| Rank | Balancing Authority | Annual Net Generation | # Power Plants |
|---|---|---|---|
| #1 | PJM Interconnection, LLC | 870.7 TWh | 2,465 |
| #2 | Midcontinent Independent System Operator, Inc. | 655.1 TWh | 2,831 |
| #4 | Electric Reliability Council of Texas, Inc. | 485.0 TWh | 1,313 |
| #5 | Southwest Power Pool | 299.9 TWh | 835 |
| #6 | Southern Company Services, Inc. - Trans | 250.9 TWh | 417 |
| #7 | California Independent System Operator | 188.0 TWh | 2,075 |
| #9 | Tennessee Valley Authority | 161.6 TWh | 204 |
| #10 | Florida Power & Light Co. | 148.9 TWh | 187 |
| #12 | New York Independent System Operator | 131.6 TWh | 1,211 |
| #13 | Duke Energy Carolinas | 112.5 TWh | 565 |