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.
Register Now for Comprehensive Access
Subscribe now to access all power plant data, utility information, FERC EQR data, and more for Midcontinent Independent System Operator, Inc..
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 |
|---|---|---|---|---|---|---|
| White Rapids | Wisconsin Electric Power Co | Stephenson, MI | 33 GWh | Sep 1927 | Dec 2025 | Water |
| White River Medical Center | Entegrity Solar WRMC, LLC | Newport, AR | 5 GWh | Sep 2023 | Dec 2024 | Solar |
| White River (WI) | Northern States Power Co - Minnesota | Ashland, WI | 3 GWh | Dec 1906 | Dec 2025 | Water |
| White Tail Solar | White Tail Solar, LLC | Milan, MI | 99 GWh | Oct 2025 | May 2026 | Solar |
| Whiteside Solar 1 CSG | Whiteside Solar 1, LLC | Fulton, IL | 4 GWh | Nov 2020 | Dec 2025 | Solar |
| Whitewater Generating Station | Wisconsin Electric Power Co | Whitewater, WI | 441 GWh | Aug 1997 | May 2026 | Natural Gas |
| Whiting | Consolidated Water Power Co | Whiting, WI | 16 GWh | Dec 1890 | Dec 2025 | Water |
| Whiting Clean Energy | BP Alternative Energy | Whiting, IN | 3 TWh | Mar 2002 | May 2026 | Natural Gas |
| Whiting Refinery | BP PLC | Whiting, IN | 328 GWh | Dec 1947 | Dec 2025 | Other Gas : 87.1% Natural Gas : 12.9% |
| Wildflower Solar, LLC (MS) | Duke Energy Renewables Services | DeSoto, MS | 200 GWh | Apr 2024 | May 2026 | Solar |
| Wildwood Solar Plant | Wildwood Solar, LLC | Tutwiler, MS | 104 GWh | Nov 2025 | May 2026 | Solar |
| Willford Solar, LLC | Willford Solar, LLC | Gladwin, MI | 41 GWh | Sep 2023 | Dec 2025 | Solar |
| Willmar Municipal East Substation | Willmar Municipal Utilities (MN) | Willmar, MN | 32 MWh | May 2000 | Dec 2025 | Distillate Fuel Oil |
| Willmar Municipal SW Substation | Willmar Municipal Utilities (MN) | Willmar, MN | 30 MWh | May 2000 | Dec 2025 | Distillate Fuel Oil |
| Wilmarth | Northern States Power Co - Minnesota | Mankato, MN | 97 GWh | Aug 1948 | May 2026 | Non-biogenic Municipal Solid Waste : 53.8% Biogenic Municipal Solid Waste : 44.0% Natural Gas : 2.1% |
| Wilmot | DTE Electric Company | Kingston Twp, MI | 2 GWh | Nov 1968 | Apr 2026 | Distillate Fuel Oil |
| Wilton | City of Wilton - (IA) | Wilton, IA | 8 MWh | Dec 1991 | Dec 2025 | Distillate Fuel Oil |
| Wilton Wind II LLC | Wilton Wind II LLC | Wilton, ND | 201 GWh | Oct 2009 | Dec 2025 | Wind |
| Wind GEM | Wind GEM, LLC | Stuart, IA | 5 GWh | Aug 2015 | Dec 2025 | Wind |
| Wind Turbine | Madison Gas & Electric Co | Casco, WI | 12 GWh | May 1999 | Dec 2025 | Wind |
| Windcurrent Farms LLC | Windcurrent Farms LLC | Woodstock, MN | 5 GWh | Aug 2003 | Dec 2025 | Wind |
| Windom | City of Windom (MN) | Windom, MN | 32 MWh | May 1980 | Dec 2025 | Distillate Fuel Oil |
| Windom Wind Project | Midwest Power Partners LLC | Bingham Lake, MN | 32 GWh | Feb 2006 | Dec 2025 | Wind |
| Windshare LLC | Greenbacker Renewable Energy Corporation | Chandler, MN | 6 GWh | Feb 2006 | Dec 2025 | Wind |
| Windwalkers LLC | RWE Clean Energy | Kensett, IA | 2 GWh | Aug 2011 | Dec 2025 | Wind |
| Winegar CSG | Terraform Arcadia | Waseca, MN | 2 GWh | Sep 2018 | Dec 2025 | Solar |
| Winfield Solar | Winfield Solar I, LLC | Winfield, MO | 281 GWh | Apr 2025 | May 2026 | Solar |
| Winnebago County Landfill Gas | Winnebago County - (WI) | Oshkosh, WI | 3 GWh | Jan 2000 | Dec 2025 | Landfill Gas |
| Winnebago Wind Power Project | Avangrid Power LLC | Forest City, IA | 61 GWh | Aug 2008 | Dec 2025 | Wind |
| Winona Community Solar One LLC | Madison Energy Holdings LLC | La Crescent, MN | 2 GWh | May 2020 | Dec 2025 | Solar |
| Winona Garden | Winona Garden LLC | Altura, MN | 2 GWh | Oct 2023 | Dec 2025 | Solar |
| Winona Solar | Winona Solar I LLC | Altura, MN | 4 GWh | Jul 2019 | Dec 2025 | Solar |
| Winters Spawn LLC | CHI Operations Inc | Lake Benton, MN | 5 GWh | Dec 2000 | Dec 2024 | Wind |
| Winterset | City of Winterset - (IA) | Winterset, IA | 33 MWh | Jun 1956 | Dec 2025 | Distillate Fuel Oil : 57.8% Natural Gas : 42.2% |
| Winton | ALLETE, Inc. | Winton, MN | 18 GWh | Jul 1923 | Dec 2025 | Water |
| Wiota | Wiota Wind Energy, LLC #1 | Wiota, IA | 5 GWh | Apr 2012 | Dec 2025 | Wind |
| Wisconsin Rapids | Consolidated Water Power Co | Wisconsin Rapids, WI | 46 GWh | Dec 1902 | Dec 2025 | Water |
| Wissota | Northern States Power Co - Minnesota | Chippewa Falls, WI | 118 GWh | Dec 1916 | Dec 2025 | Water |
| Wolf River (Chipewa 1) | Greenbacker Renewable Energy Corporation | Stanley, WI | 3 GWh | Jan 2024 | Dec 2025 | Solar |
| Wolf Run Solar | Wolf Run Solar LLC | Chapin, IL | 305 GWh | Oct 2024 | May 2026 | Solar |
| Wolf Wind Enterprises LLC | Midwest Power Partners LLC | Rushmore, MN | 3 GWh | Apr 2006 | Dec 2025 | Wind |
| Wollan Garden Solar | Altus Power America Management, LLC | Starbuck, MN | 2 GWh | Jun 2019 | Dec 2025 | Solar |
| Wolverine | Wolverine Wind Energy, LLC | Greenfield, IA | 5 GWh | Sep 2010 | Dec 2025 | Wind |
| Wolverine Solar | Wolverine Solar, LLC | Maynard, MN | 2 GWh | Oct 2023 | Dec 2025 | Solar |
| Wood County | Wisconsin Power & Light Co | Nekoosa, WI | 273 GWh | Nov 2022 | May 2026 | Solar |
| Woodbury Solar | MN CSG 2, LLC | Woodbury, MN | 4 GWh | Jun 2020 | Dec 2025 | Solar |
| Woodruff County Solar | Arkansas Electric Coop Corp | Augusta, AR | 176 GWh | Sep 2024 | May 2026 | Solar |
| Woodruff Electric Cooperative | Today's Power, Inc. | Forrest City, AR | 2 GWh | Apr 2019 | Dec 2025 | Solar |
| Woodstock Windfarm | RWE Clean Energy | Woodstock, MN | 37 GWh | Apr 1999 | Dec 2025 | Wind |
| Workman Road Solar Farm, LLC | Workman Road Solar Farm, LLC | Lake City, MI | 4 GWh | Nov 2020 | Dec 2025 | Solar |
| Worthington | City of Worthington - (MN) | Worthington, MN | 6 GWh | Jan 2002 | Dec 2025 | Wind : 99.3% Distillate Fuel Oil : 0.7% |
| Worthington Generation LLC | Hoosier Energy R E C, Inc | Worthington, IN | 203 GWh | May 2000 | Dec 2025 | 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 | 12 GWh | May 2019 | Dec 2025 | Solar |
| WrightSun CSG, LLC | SunStrong Management, LLC | St. Michael, MN | 8 GWh | Dec 2017 | Dec 2025 | Solar |
| Wyandotte | Wyandotte Municipal Serv Comm - (MI) | Wyandotte, MI | 110 MWh | Dec 1947 | May 2026 | Distillate Fuel Oil |
| Wyoming 2 CSG, LLC | Ecoplexus, Inc | Wyoming, MN | 8 GWh | Feb 2018 | Dec 2025 | Solar |
| Yorktown 1 Solar | SoCore Energy LLC | Lyndon, IL | 4 GWh | Dec 2023 | Dec 2025 | Solar |
| Yorktown 2 Solar | SoCore Energy LLC | Lyndon, IL | 4 GWh | Dec 2023 | Dec 2025 | Solar |
| Zeeland | City of Zeeland - (MI) | Zeeland, MI | 600 MWh | Dec 1956 | Dec 2025 | Natural Gas : 89.2% Distillate Fuel Oil : 10.8% |
| Zeeland Generating Station | Consumers Energy Co - (MI) | Zeeland, MI | 6 TWh | May 2001 | May 2026 | Natural Gas |
| Zeuber | Today's Power, Inc. | Little Rock, AR | 7 GWh | Nov 2023 | Dec 2025 | Solar |
| Zimmerman Energy | Landfill Energy Systems | Argos, IN | 41 GWh | Oct 2014 | May 2026 | Landfill Gas |
| Zumbro Community Solar Garden | Zumbro Solar LLC | Zumbrota, MN | 2 GWh | Mar 2018 | Dec 2025 | Solar |
| Zumbro Solar Garden | Zumbro Garden LLC | Kasson, MN | 2 GWh | Mar 2020 | Dec 2025 | Solar |
| 13 Mile Solar, LLC | 13 Mile Solar, LLC | Battle Creek, MI | 4 GWh | Nov 2020 | Dec 2025 | Solar |
| 2662 Freeport Solar 1 CSG | 2662 Freeport Solar 1, LLC | Freeport, IL | 3 GWh | Nov 2020 | Dec 2025 | Solar |
| 4710 Hosting | Epic Hosting, LLC | Rochester, MN | 63 MWh | May 2012 | Dec 2025 | Distillate Fuel Oil |
| 491 E 48th Street | City of Holland - (MI) | Holland, MI | 142 GWh | Apr 1992 | Dec 2025 | Natural Gas |
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 |