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%

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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
T Luhman CSG	Madison Energy Holdings LLC	Zumbrota, MN	2 GWh	Jul 2021	Dec 2024	Solar
TAC-Distributed Energy Resource Hybrid	Ameren Illinois	Champaign, IL	307 MWh	Feb 2017	Dec 2024	Solar : 63.8% Wind : 36.2%
Taconite Ridge 1 Wind Energy Center	ALLETE, Inc.	Mountain Iron, MN	47 GWh	Apr 2008	Dec 2024	Wind
Taft Cogeneration Facility	Occidental Chemical Corporation	Hahnville, LA	5 TWh	Jun 2002	Sep 2025	Natural Gas : 98.8% Other Gas : 1.2%
Tatanka Ridge	Tatanka Ridge LLC	Toronto, SD	595 GWh	Dec 2020	Sep 2025	Wind
Tatanka Wi	HQC Tatanka Wi Solar Power Generation LLC	Buffalo, MN	11 GWh	Nov 2017	Dec 2024	Solar
Tatanka Wind Power LLC	Acciona Wind Energy USA LLC	Ashley, ND	465 GWh	Dec 2007	Sep 2025	Wind
Taurus Community Solar	Taurus Community Solar	Montevideo, MN	6 GWh	Feb 2018	Dec 2024	Solar
Taylors Falls CSG	SoCore Energy LLC	Taylor Falls, MN	8 GWh	Dec 2017	Dec 2024	Solar
Tazewell Gas Recovery	WM Illinois Renewable Energy LLC	East Peoria, IL	13 GWh	Jun 1989	Dec 2024	Landfill Gas
TCI Alvar	Entergy New Orleans, LLC	New Orleans, LA	2 GWh	Mar 2019	Dec 2024	Solar
TCI France	Entergy New Orleans, LLC	New Orleans, LA	2 GWh	Mar 2019	Dec 2024	Solar
TCLP Solar Phase 1	Heritage Sustainable Energy. LLC	Traverse City, MI	1 GWh	Sep 2017	Dec 2024	Solar
Teche	Cleco Power LLC	Baldwin, LA	21 GWh	Jun 1953	Dec 2024	Natural Gas
Tell City Solar Park	Indiana Municipal Power Agency	Tell City, IN	5 GWh	Jun 2020	Dec 2024	Solar
Temperance Solar, LLC	National Grid Renewables	Erie, MI	40 GWh	Nov 2020	Dec 2024	Solar
TES Filer City Station	TES Filer City Station LP	Filer City, MI	316 GWh	Apr 1990	Sep 2025	Bituminous Coal : 64.6% Natural Gas : 21.3% Wood/Wood Waste Solids : 14.1%
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
The GSI Group LLC at Assumption	Luminace Solar Illinois 2, LLC	Assumption, IL	2 GWh	Dec 2020	Dec 2024	Solar
Thief River Falls	City of Thief River Falls	Thief River Falls, MN	3 GWh	Jul 1927	Dec 2024	Water : 99.6%
Thomson	ALLETE, Inc.	Carlton, MN	290 GWh	Dec 1906	Dec 2024	Water
Thomson Reuters Campus Bldg A-D	Thomson Corp	Eagan, MN	5 GWh	Mar 1999	Sep 2025	Distillate Fuel Oil
Thomson Reuters Data Center Bldg ES101	Ryan Companies US, Inc.	Eagan, MN	9 MWh	Apr 2009	Aug 2024	Distillate Fuel Oil
Thomson Reuters Data Center Bldg H	Ryan Companies US, Inc.	Eagan, MN	41 MWh	Dec 2006	Nov 2024	Distillate Fuel Oil
Thornapple	Northern States Power Co - Minnesota	Bruce, WI	8 GWh	Dec 1926	Dec 2024	Water
Thunder Spirit Wind, LLC	Montana-Dakota Utilities Co	Hettinger, ND	523 GWh	Nov 2015	Dec 2024	Wind
Tiller CSG	DG Minnesota CSG, LLC	Clear Lake, MN	8 GWh	Nov 2018	Dec 2024	Solar
Tilton	Tilton Energy LLC	Tilton, IL	69 GWh	May 1999	Dec 2024	Natural Gas
Timberline Trail Gas Recovery	WM Renewable Energy LLC	Weyerhaeser, WI	19 GWh	Jan 2006	Dec 2024	Landfill Gas
Timmerman (CSG)	Elora LLC	Balaton, MN	2 GWh	Nov 2022	Dec 2024	Solar
Tippecanoe Solar Power Plant	Duke Energy Indiana, LLC	West Lafayette, IN	3 GWh	Nov 2019	Nov 2024	Solar
Tipton	City of Tipton - (IA)	Tipton, IA	69 MWh	Oct 1955	Dec 2024	Distillate Fuel Oil
Tipton Solar Park	Indiana Municipal Power Agency	Tipton, IN	9 GWh	Jun 2019	Dec 2024	Solar
Titlow Garden LLC CSG	Titlow Garden LLC	Gaylord, MN	2 GWh	Dec 2022	Dec 2024	Solar
Tofteland Windfarm LLC	Tofteland Windfarm LLC	Pipestone, MN	288 MWh	Sep 2003	Dec 2024	Wind
Tomahawk	Wisconsin Public Service Corp	Tomahawk, WI	11 GWh	Dec 1937	Dec 2024	Water
Top of Iowa Windfarm III	Madison Gas & Electric Co	Kensett, IA	44 GWh	Jan 2008	Dec 2024	Wind
Tower	Wolverine Power Supply Coop	Tower, MI	62 MWh	Feb 1971	Dec 2024	Distillate Fuel Oil
Traer Wind Project	City of Traer - (IA)	Traer, IA	6 GWh	Sep 2010	Dec 2024	Wind
Trego	Northern States Power Co - Minnesota	Hayward, WI	7 GWh	Dec 1926	Dec 2024	Water
Trigen St. Louis	Centerstream STL, LLC	St Louis, MO	86 GWh	May 1999	Jul 2025	Natural Gas
Trimbelle (Pierce Pepin)	Greenbacker Renewable Energy Corporation	Hager City, WI	3 GWh	Jan 2024	Dec 2024	Solar
Trimont Area Wind Farm	Avangrid Power LLC	Trimont, MN	379 GWh	Oct 2005	Dec 2024	Wind
Troy Solar	Southern Indiana Gas & Elec Co	Troy, IN	97 GWh	Mar 2021	Sep 2025	Solar
Truman	City of Truman	Truman, MN	39 MWh	Aug 1938	Dec 2024	Distillate Fuel Oil
Truman Solar	Truman Solar, LLC	Colombia, MO	23 GWh	May 2021	Dec 2024	Solar
Tsar Nicholas LLC	CHI Operations Inc	Hendricks, MN	4 GWh	Jan 2001	Dec 2024	Wind
Turrill Solar Farm	DTE Electric Company	Lapeer, MI	25 GWh	Apr 2017	Dec 2024	Solar
Turtle Creek Wind Farm LLC	Turtle Creek Wind Farm LLC	St. Ansgar, IA	725 GWh	Nov 2018	Sep 2025	Wind
Tuscola Bay Wind	Tuscola Bay Wind LLC	Reese, MI	367 GWh	Nov 2012	Sep 2025	Wind
Tuscola Wind II LLC	Tuscola Wind II LLC	Reese, MI	301 GWh	Oct 2013	Sep 2025	Wind
Tweite Community Solar LLC	Tweite Community Solar LLC	Byron, MN	2 GWh	Oct 2020	Dec 2024	Solar
Twin Bridges LFGTE	Wabash Valley Power Assn, Inc	Danville, IN	6 GWh	Sep 1994	Dec 2023	Landfill Gas
Twin Cities Hydro LLC	Twin Cities Hydro LLC	St. Paul, MN	90 GWh	Sep 1924	Dec 2024	Water
Twin Falls (WI)	Wisconsin Electric Power Co	Florence, WI	31 GWh	Jun 2016	Dec 2024	Water
Twin Lake Hills LLC	CHI Operations Inc	Lake Benton, MN	5 GWh	Nov 2000	Dec 2024	Wind
Twin Lakes Solar LLC	Twin Lakes Solar LLC	Monticello, IN	308 GWh	Nov 2024	Sep 2025	Solar
Two Creeks Solar	Wisconsin Public Service Corp	Two Rivers, WI	194 GWh	Oct 2020	Sep 2025	Solar
Two Pine Landfill Gas Recovery	WM Renewable Energy LLC	North Little Rock, AR	27 GWh	Sep 2006	Dec 2024	Landfill Gas
Tyto Solar	Madison Gas & Electric Co	Fitchburg, WI	11 GWh	Jan 2024	Dec 2024	Solar
Ubly	Thumb Electric Coop of Mich	Ubly, MI	12 MWh	May 1938	Dec 2024	Distillate Fuel Oil : 63.3% Natural Gas : 36.7%
Uilk Wind LLC	RENEW Energy Inc	Pipestone, MN	9 GWh	Dec 2009	Dec 2024	Wind
Umbriel Solar	Umbriel Solar, LLC	Livington, TX	321 GWh	Sep 2023	Sep 2025	Solar
UMM Wind Turbine	University of Minnesota Morris Campus	Morris, MN	4 GWh	May 2011	Dec 2024	Wind
Unbridled Solar	National Grid Renewables	Robards, KY	232 GWh	-	Sep 2025	Solar
Union Garden	Excelsior Energy Capital	Northfield, MN	2 GWh	Feb 2021	Dec 2024	Solar
Union Power Station	Entergy Arkansas LLC	El Dorado, AR	9 TWh	Dec 2002	Sep 2025	Natural Gas
Univ Minnesota CHP Plant	University of Minnesota Central Utilities	Minneapolis, MN	166 GWh	Oct 2017	Dec 2024	Natural Gas : 99.9%
University of Illinois Abbott Power Plt	University of Illinois	Champaign, IL	211 GWh	Oct 1940	Dec 2024	Natural Gas : 97.4% Bituminous Coal : 2.6%
University of Iowa Main Power Plant	University of Iowa	Iowa City, IA	4 GWh	Dec 1946	Sep 2024	Natural Gas : 51.7% Other Biomass Solids : 19.1% Wood/Wood Waste Solids : 18.4% Bituminous Coal : 10.8%
University of Michigan	University of Michigan	Ann Arbor, MI	209 GWh	Dec 1974	Sep 2025	Natural Gas
University of Northern Iowa	University of Northern Iowa	Cedar Falls, IA	20 GWh	Oct 1982	Sep 2025	Natural Gas : 76.2% Petroleum Coke : 16.6% Bituminous Coal : 7.1%
Upland Prairie	Interstate Power and Light Co	Spencer, IA	1 TWh	Feb 2019	Sep 2025	Wind
Upper Sterling	City of Rock Falls - (IL)	Rock Falls, IL	9 GWh	May 1988	Dec 2024	Water
Ursa Community Solar	Ursa Community Solar	Farmington, MN	8 GWh	Dec 2016	Dec 2024	Solar
USG Paper, LLC - Orange Mill	USG Paper LLC	Orange, TX	239 GWh	Oct 1967	Dec 2023	Black Liquor : 59.3% Wood/Wood Waste Solids : 39.8% Tire-derived Fuels : 0.9%
USS All In Solar LLC CSG	Standard Solar	Hartland, MN	2 GWh	Sep 2020	Dec 2024	Solar
USS B&B Solar LLC CSG	Standard Solar	Morgan, MN	2 GWh	Aug 2020	Dec 2024	Solar
USS Big Lake 1 Solar CSG	United States Solar Corporation	Big Lake, MN	2 GWh	Nov 2018	Dec 2024	Solar
USS Bluff Country Solar CSG	United States Solar Corporation	Altura, MN	2 GWh	Nov 2020	Dec 2024	Solar
USS Brockway Solar CSG	United States Solar Corporation	Sartell, MN	2 GWh	Dec 2018	Dec 2024	Solar
USS Buckaroo Solar LLC CSG	Standard Solar	Glydon, MN	2 GWh	Sep 2020	Dec 2024	Solar
USS Bush Solar LLC CSG	United States Solar Corporation	Owatonna, MN	2 GWh	Sep 2020	Dec 2024	Solar
USS Catfish Solar LLC	United States Solar Corporation	Franklin, MN	2 GWh	Dec 2022	Dec 2024	Solar
USS Centerfield Solar CSG	Standard Solar	Webster, MN	2 GWh	Oct 2019	Dec 2024	Solar
USS Chariot Solar LLC	United States Solar Corporation	Danube, MN	2 GWh	Dec 2020	Dec 2024	Solar
USS Cheyenne Solar LLC CSG	Standard Solar	Chisago City, MN	2 GWh	Nov 2019	Dec 2024	Solar
USS Christoffer Solar LLC CSG	Standard Solar	Montevideo, MN	2 GWh	Aug 2020	Dec 2024	Solar
USS Cosmo Solar LLC (CSG)	United States Solar Corporation	Danube, MN	2 GWh	Nov 2023	Dec 2024	Solar
USS Cougar Solar LLC CSG	Standard Solar	Morgan, MN	2 GWh	Aug 2020	Dec 2024	Solar
USS Danube Solar LLC	United States Solar Corporation	Danube, MN	2 GWh	Nov 2021	Dec 2024	Solar
USS Dot Com Solar LLC CSG	Standard Solar	Morgan, MN	2 GWh	Feb 2021	Dec 2024	Solar
USS Dressen Family Solar LLC	United States Solar Corporation	Mayer, MN	2 GWh	Jun 2023	Dec 2024	Solar
USS Dubhe Solar CSG	United States Solar Corporation	North Branch, MN	2 GWh	Nov 2018	Dec 2024	Solar
USS DVL Solar CSG	Standard Solar	Waconia, MN	2 GWh	Jul 2019	Dec 2024	Solar
USS Eggo Solar CSG	Standard Solar	Cologne, MN	2 GWh	May 2019	Dec 2024	Solar
USS Fair Park Solar LLC (CSG)	United States Solar Corporation	Faribault, MN	2 GWh	Nov 2023	Dec 2024	Solar
USS Flower Solar LLC CSG	Standard Solar	Nicollet, MN	2 GWh	Aug 2020	Dec 2024	Solar
USS Foley Solar LLC	United States Solar Corporation	Foley, MN	2 GWh	Jun 2022	Dec 2024	Solar

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