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
Tomahawk	Wisconsin Public Service Corp	Tomahawk, WI	11 GWh	Dec 1937	Dec 2024	Water
Tofteland Windfarm LLC	Tofteland Windfarm LLC	Pipestone, MN	288 MWh	Sep 2003	Dec 2024	Wind
Titlow Garden LLC CSG	Titlow Garden LLC	Gaylord, MN	2 GWh	Dec 2022	Dec 2024	Solar
Tipton Solar Park	Indiana Municipal Power Agency	Tipton, IN	9 GWh	Jun 2019	Dec 2024	Solar
Tipton	City of Tipton - (IA)	Tipton, IA	69 MWh	Oct 1955	Dec 2024	Distillate Fuel Oil
Tippecanoe Solar Power Plant	Duke Energy Indiana, LLC	West Lafayette, IN	3 GWh	Nov 2019	Nov 2024	Solar
Timmerman (CSG)	Elora LLC	Balaton, MN	2 GWh	Nov 2022	Dec 2024	Solar
Timberline Trail Gas Recovery	WM Renewable Energy LLC	Weyerhaeser, WI	19 GWh	Jan 2006	Dec 2024	Landfill Gas
Tilton	Tilton Energy LLC	Tilton, IL	69 GWh	May 1999	Dec 2024	Natural Gas
Tiller CSG	DG Minnesota CSG, LLC	Clear Lake, MN	8 GWh	Nov 2018	Dec 2024	Solar
Thunder Spirit Wind, LLC	Montana-Dakota Utilities Co	Hettinger, ND	523 GWh	Nov 2015	Dec 2024	Wind
Thornapple	Northern States Power Co - Minnesota	Bruce, WI	8 GWh	Dec 1926	Dec 2024	Water
Thomson Reuters Data Center Bldg H	Ryan Companies US, Inc.	Eagan, MN	41 MWh	Dec 2006	Nov 2024	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 Campus Bldg A-D	Thomson Corp	Eagan, MN	5 GWh	Mar 1999	Sep 2025	Distillate Fuel Oil
Thomson	ALLETE, Inc.	Carlton, MN	290 GWh	Dec 1906	Dec 2024	Water
Thief River Falls	City of Thief River Falls	Thief River Falls, MN	3 GWh	Jul 1927	Dec 2024	Water : 99.6%
The GSI Group LLC at Assumption	Luminace Solar Illinois 2, LLC	Assumption, IL	2 GWh	Dec 2020	Dec 2024	Solar
The Andersons Albion Ethanol LLC	The Andersons Albion Ethanol LLC	Albion, MI	63 GWh	Jul 2006	Dec 2024	Natural Gas
TG Windfarm LLC	TG Windfarm LLC	Pipestone, MN	288 MWh	Oct 2003	Dec 2024	Wind
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%
Temperance Solar, LLC	National Grid Renewables	Erie, MI	40 GWh	Nov 2020	Dec 2024	Solar
Tell City Solar Park	Indiana Municipal Power Agency	Tell City, IN	5 GWh	Jun 2020	Dec 2024	Solar
Teche	Cleco Power LLC	Baldwin, LA	21 GWh	Jun 1953	Dec 2024	Natural Gas
TCLP Solar Phase 1	Heritage Sustainable Energy. LLC	Traverse City, MI	1 GWh	Sep 2017	Dec 2024	Solar
TCI France	Entergy New Orleans, LLC	New Orleans, LA	2 GWh	Mar 2019	Dec 2024	Solar
TCI Alvar	Entergy New Orleans, LLC	New Orleans, LA	2 GWh	Mar 2019	Dec 2024	Solar
Tazewell Gas Recovery	WM Illinois Renewable Energy LLC	East Peoria, IL	13 GWh	Jun 1989	Dec 2024	Landfill Gas
Taylors Falls CSG	SoCore Energy LLC	Taylor Falls, MN	8 GWh	Dec 2017	Dec 2024	Solar
Taurus Community Solar	Taurus Community Solar	Montevideo, MN	6 GWh	Feb 2018	Dec 2024	Solar
Tatanka Wind Power LLC	Acciona Wind Energy USA LLC	Ashley, ND	465 GWh	Dec 2007	Sep 2025	Wind
Tatanka Wi	HQC Tatanka Wi Solar Power Generation LLC	Buffalo, MN	11 GWh	Nov 2017	Dec 2024	Solar
Tatanka Ridge	Tatanka Ridge LLC	Toronto, SD	595 GWh	Dec 2020	Sep 2025	Wind
Taft Cogeneration Facility	Occidental Chemical Corporation	Hahnville, LA	5 TWh	Jun 2002	Sep 2025	Natural Gas : 98.8% Other Gas : 1.2%
Taconite Ridge 1 Wind Energy Center	ALLETE, Inc.	Mountain Iron, MN	47 GWh	Apr 2008	Dec 2024	Wind
TAC-Distributed Energy Resource Hybrid	Ameren Illinois	Champaign, IL	307 MWh	Feb 2017	Dec 2024	Solar : 63.8% Wind : 36.2%
T Luhman CSG	Madison Energy Holdings LLC	Zumbrota, MN	2 GWh	Jul 2021	Dec 2024	Solar
T J Labbe Electric Generating	Lafayette Utilities System	Lafayette, LA	28 GWh	Jul 2005	Dec 2024	Natural Gas
T B Simon Power Plant	Michigan State University	East Lansing, MI	250 GWh	Nov 1965	Sep 2025	Natural Gas
Syncarpha Prinsburg CSG (Ledeboer)	Prinsburg CSG I, LLC	Prinsburg, MN	2 GWh	Nov 2018	Dec 2024	Solar
Syncarpha Dodge 1 CSG	Solar Provider Group MN I LLC	Dodge Center, MN	2 GWh	Apr 2019	Dec 2024	Solar
Syncarpha Clara City CSG I (Stamer)	Clara City CSG I, LLC	Clara City, MN	2 GWh	Nov 2018	Dec 2024	Solar
Sylvarena	Cooperative Energy	Raleigh, MS	294 GWh	Jun 2003	Dec 2024	Natural Gas
Sylvan Solar	ALLETE, Inc.	Pillager, MN	25 GWh	Jun 2023	Dec 2024	Solar
Sylvan	ALLETE, Inc.	Pillager, MN	11 GWh	Dec 1912	Dec 2024	Water
Syl Laskin	ALLETE, Inc.	Hoyt Lakes, MN	172 GWh	May 1953	Dec 2024	Natural Gas
Sycamore (WI)	Madison Gas & Electric Co	Madison, WI	19 MWh	Nov 1967	Dec 2024	Natural Gas
Sycamore (IA)	MidAmerican Energy Co	Johnston, IA	10 GWh	Jul 1974	Dec 2024	Natural Gas
Swan Garden	Swan Garden LLC	Villard, MN	2 GWh	Sep 2021	Dec 2024	Solar
Svihel Community Solar LLC CSG	Svihel Community Solar LLC	Foley, MN	2 GWh	Mar 2021	Dec 2024	Solar
SV CSG Barrass Farms II LL	SV CSG Barrass Farms II LLC	Marion, IL	4 GWh	Aug 2023	Dec 2024	Solar
SV CSG AFTON I	SV CSG Afton I, LLC	Afton, MN	642 MWh	Jun 2024	Dec 2024	Solar
Surbrook Solar, LLC	Surbrook Solar, LLC	Rives Junction, MI	3 GWh	Aug 2024	Dec 2024	Solar
Superior Falls	Northern States Power Co - Minnesota	Ironwood, MI	7 GWh	Dec 1916	Dec 2024	Water
Sunset Breeze LLC	Midwest Power Partners LLC	Rushmore, MN	2 GWh	Apr 2006	Dec 2024	Wind
Sunrise Community Solar	Sunrise Community Solar	North Branch, MN	8 GWh	Nov 2016	Dec 2024	Solar
Sunlight Road Solar	Sunlight Road Solar, LLC	Franklinton, LA	106 GWh	Oct 2024	Sep 2025	Solar
Sunflower County	Sunflower County Solar Project, LLC	Ruleville, MS	143 GWh	Aug 2022	Sep 2025	Solar
SunE Stolee CSG, LLC	Ecoplexus, Inc	Kenyon, MN	5 GWh	Feb 2018	Dec 2024	Solar
SunE Feely 1 CSG, LLC	Ecoplexus, Inc	Farmington, MN	8 GWh	Aug 2018	Dec 2024	Solar
Sun River LLC	CHI Operations Inc	Hendricks, MN	4 GWh	Jan 2001	Dec 2024	Wind
Sumrall II Solar Farm	Onward Energy	Sumrall, MS	110 GWh	Nov 2017	Sep 2025	Solar
Sumpter Energy Associates	NextEra Renewable Fuels, LLC	Belleville, MI	63 GWh	Jun 1992	Dec 2024	Landfill Gas
Sumpter	Wolverine Power Supply Coop	Belleville, MI	190 GWh	Jun 2002	Dec 2024	Natural Gas
Sumner	City of Sumner - (IA)	Sumner, IA	175 MWh	Jul 1956	Dec 2024	Distillate Fuel Oil
Summit Lake	Central Iowa Power Cooperative	Creston, IA	70 GWh	Feb 1951	Dec 2024	Natural Gas : 99.9%
Sullivan (IL)	City of Sullivan - (IL)	Sullivan, IL	255 MWh	May 1946	Sep 2025	Distillate Fuel Oil
Sullivan B Community Solar LLC	Sullivan B Community Solar LLC	Macomb, IL	3 GWh	Nov 2020	Dec 2024	Solar
Sugar Creek Wind One LLC	Sugar Creek Wind One LLC	TBD, IL	643 GWh	Oct 2020	Sep 2025	Wind
Sugar Creek Power	Northern Indiana Pub Serv Co	West Terre Haute, IN	4 TWh	May 2002	Sep 2025	Natural Gas
Stuttgart Solar	Stuttgart Solar, LLC	Stuttgart, AR	155 GWh	Dec 2017	Sep 2025	Solar
Sturgeon Garden	Sturgeon Garden LLC	Goodhue, MN	2 GWh	Nov 2023	Dec 2024	Solar
Studenski Community Solar LLC CSG	Studenski Community Solar LLC	Sauk Rapids, MN	2 GWh	Mar 2021	Dec 2024	Solar
Stromland Solar	Greenbacker Renewable Energy Corporation	Cochrane, WI	6 GWh	Nov 2021	Dec 2024	Solar
Strobus	Greenbacker Renewable Energy Corporation	Merrillan, WI	3 GWh	Aug 2021	Dec 2024	Solar
Streeter Station	Cedar Falls Utilities	Cedar Falls, IA	8 GWh	Aug 1963	Dec 2024	Natural Gas : 94.0% Bituminous Coal : 6.0%
Strawberry Point DPC Solar	SoCore Energy LLC	Strawberry Point, IA	2 GWh	Oct 2017	Dec 2024	Solar
Strandness Garden	Strandness Garden LLC	Starbuck, MN	2 GWh	Jan 2020	Dec 2024	Solar
Straight Garden Solar	Straight Garden LLC	Faribault, MN	2 GWh	Feb 2020	Dec 2024	Solar
Story City Wind Project	Hamilton Wind Energy LLC	Story City, IA	5 GWh	Sep 2010	Dec 2024	Wind
Story City	City of Story City - (IA)	Story City, IA	97 MWh	Dec 1963	Dec 2024	Distillate Fuel Oil : 89.6% Natural Gas : 10.4%
Storm Lake II	ALLETE Clean Energy	Alta, IA	114 GWh	Mar 1999	Dec 2024	Wind
Storm Lake 1	ALLETE Clean Energy	Alta, IA	85 GWh	Apr 1999	Dec 2024	Wind
Stoney Corners Wind Farm	DTE Sustainable Generation	McBain, MI	127 GWh	Nov 2009	Dec 2024	Wind
Stoneray Power Partners, LLC	EDF Renewable Asset Holdings, Inc.	Woodstock, MN	366 GWh	Jan 2019	Sep 2025	Wind
Stoneheart Solar, LLC	Stoneheart Solar, LLC	Saginaw, MI	4 GWh	Nov 2020	Dec 2024	Solar
Stockton (MN)	Greenbacker Renewable Energy Corporation	Winona, MN	4 GWh	Oct 2021	Dec 2024	Solar
Stiles	Oconto Electric Cooperative	Oconto Falls, WI	6 GWh	Feb 1949	Dec 2024	Water
Stewart CSG1, LLC	Nautilus Solar Solutions	Stewart, MN	2 GWh	Jul 2021	Dec 2024	Solar
Stevens Point Mill	Pixelle Specialty Solution, LLC	Stevens Point, WI	13 GWh	Jan 2002	Dec 2024	Natural Gas
Stevens Point	Consolidated Water Power Co	Stevens Point, WI	29 GWh	Dec 1917	Dec 2024	Water
Stevens Community Solar LLC	Madison Energy Holdings LLC	Foley, MN	2 GWh	Sep 2020	Dec 2024	Solar
Stevens Community Medical Center	Stevens Community Medical Center	Morris, MN	8 MWh	Apr 2004	Dec 2023	Distillate Fuel Oil
Stearns Solar I	Stearns Solar I LLC	Albany, MN	2 GWh	Aug 2019	May 2024	Solar
Stearns Community Solar One LLC CSG	Madison Energy Holdings LLC	Albany, MN	2 GWh	Nov 2019	Dec 2024	Solar
Staunton	Cypress Creek Renewables	Brazil, IN	7 GWh	Nov 2018	Dec 2024	Solar
State Farm	State Farm Insurance	Bloomington, IL	26 MWh	Sep 1996	Sep 2025	Distillate Fuel Oil
State Center	City of State Center - (IA)	State Center, IA	75 MWh	Jul 1972	Dec 2024	Distillate Fuel Oil : 63.9% Natural Gas : 36.1%
Star Garden	Star Garden LLC	Starbuck, MN	2 GWh	Jan 2020	Dec 2024	Solar
Star City School District	Today's Power, Inc.	Star City, AR	3 GWh	Aug 2021	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