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
Winegar CSG	Terraform Arcadia	Waseca, MN	2 GWh	Sep 2018	Dec 2024	Solar
Cornillie	Terraform Arcadia	North Branch, MN	2 GWh	Jul 2018	Dec 2024	Solar
Huneke II CSG	Terraform Arcadia	Zumbrota, MN	2 GWh	Aug 2018	Dec 2024	Solar
Eichtens II CSG	Terraform Arcadia	Winstead, MN	2 GWh	Aug 2018	Dec 2024	Solar
IND Solar Farm (Phase IIA)	Terraform Arcadia	Indianapolis, IN	10 GWh	Nov 2014	Dec 2024	Solar
Eichtens Community Solar	Terraform Arcadia	Center, MN	6 GWh	Nov 2016	Dec 2024	Solar
Red Wing Community Solar	Terraform Arcadia	Red Wing, MN	8 GWh	Nov 2016	Dec 2024	Solar
Red Maple Solar	Terraform Arcadia	Cleveland, MN	5 GWh	May 2018	Dec 2024	Solar
TES Filer City Station	TES Filer City Station LP	Filer City, MI	326 GWh	Apr 1990	Oct 2025	Bituminous Coal : 65.7% Natural Gas : 20.7% Wood/Wood Waste Solids : 13.6%
TG Windfarm LLC	TG Windfarm LLC	Pipestone, MN	288 MWh	Oct 2003	Dec 2024	Wind
The Andersons Albion Ethanol LLC	The Andersons Albion Ethanol LLC	Albion, MI	63 GWh	Jul 2006	Dec 2024	Natural Gas
Sabine River Operations	The Dow Chemical Company	Orange, TX	3 TWh	Dec 1947	Oct 2025	Natural Gas : 99.3% Other Gas : 0.7%
Kaukauna Paper Mill	Thilmany LLC	Kaukauna, WI	105 GWh	Dec 1950	Oct 2025	Natural Gas : 53.6% Black Liquor : 46.4%
Thomson Reuters Campus Bldg A-D	Thomson Corp	Eagan, MN	6 GWh	Mar 1999	Oct 2025	Distillate Fuel Oil
Caro	Thumb Electric Coop of Mich	Caro, MI	6 MWh	Jul 1949	Dec 2023	Distillate Fuel Oil
Ubly	Thumb Electric Coop of Mich	Ubly, MI	12 MWh	May 1938	Dec 2024	Distillate Fuel Oil : 63.3% Natural Gas : 36.7%
Tilton	Tilton Energy LLC	Tilton, IL	69 GWh	May 1999	Dec 2024	Natural Gas
Titlow Garden LLC CSG	Titlow Garden LLC	Gaylord, MN	2 GWh	Dec 2022	Dec 2024	Solar
General Dynamics	Today's Power, Inc.	Hampton, AR	4 GWh	Oct 2020	Dec 2024	Solar
North Arkansas Electric Cooperative	Today's Power, Inc.	Salem, AR	2 GWh	Apr 2021	Dec 2024	Solar
Petit Jean	Today's Power, Inc.	Clinton, AR	2 GWh	Nov 2023	Dec 2024	Solar
SAU Tech	Today's Power, Inc.	Bearden, AR	2 GWh	Jun 2019	Dec 2024	Solar
South Central Electric Cooperative	Today's Power, Inc.	Arkadelphia, AR	2 GWh	Jul 2019	Dec 2024	Solar
Star City School District	Today's Power, Inc.	Star City, AR	3 GWh	Aug 2021	Dec 2024	Solar
Veolia (Gum Springs)	Today's Power, Inc.	Arkadelphia, AR	3 GWh	Jul 2024	Dec 2024	Solar
Woodruff Electric Cooperative	Today's Power, Inc.	Forrest City, AR	2 GWh	Apr 2019	Dec 2024	Solar
Zeuber	Today's Power, Inc.	Little Rock, AR	7 GWh	Nov 2023	Dec 2024	Solar
Craighead Electric Solar One	Today's Power, Inc.	Brookland, AR	2 GWh	Jul 2018	Dec 2024	Solar
Ashley-Chicot Solar	Today's Power, Inc.	Hamburg, AR	2 GWh	Jul 2018	Dec 2024	Solar
Berryville School District Solar	Today's Power, Inc.	Berryville, AR	2 GWh	Jan 2018	Dec 2024	Solar
C&L	Today's Power, Inc.	Star City, AR	2 GWh	May 2020	Dec 2024	Solar
NLRED 2MW	Today's Power, Inc.	North Little Rock, AR	80 MWh	Nov 2024	Dec 2024	Solar
Clay County Electrical Cooperative	Today's Power, Inc.	Corning, AR	2 GWh	Apr 2020	Dec 2024	Solar
Farmers Electric Cooperative	Today's Power, Inc.	Newport, AR	2 GWh	May 2019	Dec 2024	Solar
FECC Solar Benton	Today's Power, Inc.	Benton, AR	967 MWh	Feb 2017	Oct 2024	Solar
Tofteland Windfarm LLC	Tofteland Windfarm LLC	Pipestone, MN	288 MWh	Sep 2003	Dec 2024	Wind
Port Arthur Texas Refinery	Total Petrochemicals USA Inc	Port Arthur, TX	226 GWh	Jul 1988	Dec 2024	Natural Gas : 75.0% Other Gas : 25.0%
Kleber	Tower Kleber Ltd Partnership	Onaway, MI	5 GWh	Dec 1924	Dec 2024	Water
Munster Landfill Gas-to-Energy	Town of Munster	Munster, IN	4 GWh	Oct 2012	Dec 2024	Landfill Gas
Truman Solar	Truman Solar, LLC	Colombia, MO	23 GWh	May 2021	Dec 2024	Solar
Turtle Creek Wind Farm LLC	Turtle Creek Wind Farm LLC	St. Ansgar, IA	714 GWh	Nov 2018	Oct 2025	Wind
Tuscola Bay Wind	Tuscola Bay Wind LLC	Reese, MI	356 GWh	Nov 2012	Oct 2025	Wind
Tuscola Wind II LLC	Tuscola Wind II LLC	Reese, MI	293 GWh	Oct 2013	Oct 2025	Wind
Tweite Community Solar LLC	Tweite Community Solar LLC	Byron, MN	2 GWh	Oct 2020	Dec 2024	Solar
Twin Cities Hydro LLC	Twin Cities Hydro LLC	St. Paul, MN	90 GWh	Sep 1924	Dec 2024	Water
Twin Lakes Solar LLC	Twin Lakes Solar LLC	Monticello, IN	322 GWh	Nov 2024	Oct 2025	Solar
Security	TX LFG Energy, LP	Cleveland, TX	6 GWh	Feb 2003	Dec 2024	Landfill Gas
M. G. Emmett J. Bean Federal Center	U.S. General Services Administration	Indianapolis, IN	519 MWh	Mar 2011	Dec 2024	Solar
Umbriel Solar	Umbriel Solar, LLC	Livington, TX	318 GWh	Sep 2023	Oct 2025	Solar
Montgomery County Community Solar Center	Union Electric Co - (MO)	New Florence, MO	9 GWh	Feb 2022	Dec 2024	Solar
Huck Finn Renewable Energy Center	Union Electric Co - (MO)	Vandalia, MO	385 GWh	Nov 2024	Oct 2025	Solar
Cass County Renewable Energy Center	Union Electric Co - (MO)	Beardstown, IL	303 GWh	Nov 2024	Oct 2025	Solar
Boomtown Renewable Energy Center	Union Electric Co - (MO)	Carmi, IL	271 GWh	Nov 2024	Oct 2025	Solar
Cape Girardeau Renewable Energy Center	Union Electric Co - (MO)	Cape Girardeau, MO	2 GWh	Oct 2021	Dec 2024	Solar
Sioux	Union Electric Co - (MO)	West Alton, MO	4 TWh	Apr 1967	Oct 2025	Subbituminous Coal : 73.7% Bituminous Coal : 26.2%
Goose Creek Energy Center	Union Electric Co - (MO)	Monticello, IL	817 MWh	Apr 2003	Nov 2024	Natural Gas
Callaway	Union Electric Co - (MO)	Fulton, MO	8 TWh	Nov 1984	Oct 2025	Nuclear
Rush Island	Union Electric Co - (MO)	Festus, MO	603 GWh	Feb 1976	Sep 2024	Subbituminous Coal : 98.2% Distillate Fuel Oil : 1.8%
Venice	Union Electric Co - (MO)	Venice, IL	27 GWh	May 2002	Dec 2024	Natural Gas
Audrain Generating Station	Union Electric Co - (MO)	Vandalia, MO	146 GWh	Jan 2001	Dec 2024	Natural Gas
Mexico	Union Electric Co - (MO)	Mexico, MO	767 MWh	Aug 1978	Dec 2024	Distillate Fuel Oil
Moberly	Union Electric Co - (MO)	Moberly, MO	34 MWh	Jul 1978	Dec 2024	Distillate Fuel Oil
Moreau	Union Electric Co - (MO)	Moreau, MO	1 GWh	Jul 1978	Dec 2024	Distillate Fuel Oil
Pinckneyville	Union Electric Co - (MO)	Pinckneyville, IL	80 GWh	May 2000	Dec 2024	Natural Gas
Keokuk	Union Electric Co - (MO)	Keokuk, IA	888 GWh	Jul 1913	Dec 2024	Water
Peno Creek	Union Electric Co - (MO)	Bowling Green, MO	118 GWh	Apr 2002	Dec 2024	Natural Gas : 97.4% Distillate Fuel Oil : 2.6%
Fairgrounds	Union Electric Co - (MO)	Jefferson City, MO	136 MWh	Jul 1974	Dec 2024	Distillate Fuel Oil
Labadie	Union Electric Co - (MO)	Labadie, MO	16 TWh	May 1970	Oct 2025	Subbituminous Coal : 99.9%
Osage Dam	Union Electric Co - (MO)	Eldon, MO	497 GWh	Sep 1931	Dec 2024	Water
High Prairie Wind Farm	Union Electric Co - (MO)	Queen City, MO	262 GWh	Nov 2020	Oct 2025	Wind
O'Fallon Renewable Energy Center	Union Electric Co - (MO)	O'Fallon, MO	2 GWh	Nov 2014	Dec 2024	Solar
Renewable Energy Center at BJH	Union Electric Co - (MO)	St Louis, MO	846 MWh	Sep 2019	Dec 2024	Solar
USS Water Fowl Solar LLC CSG	United States Solar Corporation	Silver Lake, MN	908 MWh	Aug 2022	Dec 2024	Solar
USS Kasch Solar CSG	United States Solar Corporation	Sauk Rapids, MN	2 GWh	Sep 2018	Dec 2024	Solar
USS Rockpoint Solar CSG	United States Solar Corporation	Stacy, MN	2 GWh	Nov 2018	Dec 2024	Solar
USS Big Lake 1 Solar CSG	United States Solar Corporation	Big Lake, MN	2 GWh	Nov 2018	Dec 2024	Solar
USS Good Solar CSG	United States Solar Corporation	Stacy, MN	2 GWh	Nov 2018	Dec 2024	Solar
USS Pheasant Solar LLC CSG	United States Solar Corporation	Clara City, MN	2 GWh	Oct 2020	Dec 2024	Solar
USS Bluff Country Solar CSG	United States Solar Corporation	Altura, MN	2 GWh	Nov 2020	Dec 2024	Solar
USS Viceroy Solar LLC CSG	United States Solar Corporation	Brooten, MN	3 GWh	Dec 2020	Dec 2024	Solar
USS Hubers Solar LLC CSG	United States Solar Corporation	Northfield, MN	2 GWh	Dec 2020	Dec 2024	Solar
USS Dubhe Solar CSG	United States Solar Corporation	North Branch, MN	2 GWh	Nov 2018	Dec 2024	Solar
USS Brockway Solar CSG	United States Solar Corporation	Sartell, MN	2 GWh	Dec 2018	Dec 2024	Solar
USS Reindeer Solar LLC CSG	United States Solar Corporation	Sauk Rapids, MN	2 GWh	Nov 2020	Dec 2024	Solar
USS Bush Solar LLC CSG	United States Solar Corporation	Owatonna, MN	2 GWh	Sep 2020	Dec 2024	Solar
USS Hancock Solar LLC CSG	United States Solar Corporation	Cologne, MN	2 GWh	Dec 2020	Dec 2024	Solar
USS JJ Solar CSG	United States Solar Corporation	Sauk Rapids, MN	2 GWh	Dec 2018	Dec 2024	Solar
USS Chariot Solar LLC	United States Solar Corporation	Danube, MN	2 GWh	Dec 2020	Dec 2024	Solar
USS Nillie Corn Solar CSG	United States Solar Corporation	North Branch, MN	2 GWh	Nov 2018	Dec 2024	Solar
USS Norelius Solar CSG	United States Solar Corporation	North Branch, MN	2 GWh	Dec 2018	Dec 2024	Solar
USS Water City Solar LLC CSG	United States Solar Corporation	Waterville, MN	2 GWh	Sep 2021	Dec 2024	Solar
USS Solar Dawn CSG	United States Solar Corporation	North Branch, MN	2 GWh	Nov 2018	Dec 2024	Solar
USS Solar Rapids CSG	United States Solar Corporation	Sauk Rapids, MN	2 GWh	Dec 2018	Dec 2024	Solar
USS Water Town Solar LLC CSG	United States Solar Corporation	Waterville, MN	2 GWh	Oct 2021	Dec 2024	Solar
USS Martha Solar (CSG)	United States Solar Corporation	Hamburg, MN	2 GWh	Dec 2023	Dec 2024	Solar
Helen CSG 1 LLC	United States Solar Corporation	Plato, MN	2 GWh	Oct 2021	Dec 2024	Solar
USS Prokosch Solar LLC	United States Solar Corporation	Bird Island, MN	2 GWh	May 2022	Dec 2024	Solar
USS Wildcat Solar LLC	United States Solar Corporation	Goodhue, MN	2 GWh	Oct 2021	Dec 2024	Solar
MN Buffalo Lake 212-2 LLC (CSG)	United States Solar Corporation	Buffalo Lake, MN	2 GWh	Nov 2023	Dec 2024	Solar
MN Buffalo Lake 212-1 LLC (CSG)	United States Solar Corporation	Buffalo Lake, MN	2 GWh	Nov 2023	Dec 2024	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