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
Benndale	Cooperative Energy	Benndale, MS	52 GWh	Sep 1969	Dec 2024	Natural Gas
Novel Milbradt Solar LLC	Novel Milbradt Solar HQ LLC	Belview, MN	16 MWh	Nov 2024	Dec 2024	Solar
West Riverside Energy Center	Wisconsin Power & Light Co	Beloit, WI	5 TWh	Apr 2020	Sep 2025	Natural Gas : 99.9%
Paddock Solar	Wisconsin Power & Light Co	Beloit, WI	135 GWh	Oct 2023	Sep 2025	Solar
HQC Rock River Solar Power Gen Station	HQC Rock River Solar Power Generation Station LLC	Beloit, WI	3 GWh	Jun 2016	Dec 2024	Solar
Beloit Memorial Hospital Power Plant	Beloit Memorial Hospital	Beloit, WI	71 MWh	May 2000	Dec 2024	Natural Gas : 72.9% Distillate Fuel Oil : 27.1%
Riverside Energy Center	Wisconsin Power & Light Co	Beloit, WI	3 TWh	May 2004	Sep 2025	Natural Gas
Bellevue	City of Bellevue - (IA)	Bellevue, IA	61 MWh	Jun 1947	Dec 2024	Distillate Fuel Oil
Sumpter	Wolverine Power Supply Coop	Belleville, MI	190 GWh	Jun 2002	Dec 2024	Natural Gas
Sumpter Energy Associates	NextEra Renewable Fuels, LLC	Belleville, MI	63 GWh	Jun 1992	Dec 2024	Landfill Gas
French Landing Dam	Eagle Creek Renewable Energy, LLC	Belleville, MI	8 GWh	Nov 1988	Dec 2024	Water
AES Belleville Solar LLC	AES Distributed Energy	Belleville, IL	13 GWh	Aug 2021	Nov 2024	Solar
USS Westeros Solar LLC CSG	Standard Solar	Belle Plaine, MN	2 GWh	May 2020	Dec 2024	Solar
Linden 01 CSG	SunShare Management	Belle Plaine, MN	2 GWh	Apr 2020	Dec 2024	Solar
Linden 02 CSG	SunShare Management	Belle Plaine, MN	2 GWh	Apr 2020	Dec 2024	Solar
Linden 03 CSG	SunShare Management	Belle Plaine, MN	2 GWh	Apr 2020	Dec 2024	Solar
Oak Point Cogen	Chevron Oronite Co LLC	Belle Chasse, LA	99 GWh	Sep 1999	Dec 2024	Natural Gas
Canopus Community Solar	National Grid Renewables	Belgrade, MN	2 GWh	Feb 2019	Dec 2024	Solar
Deneb Community Solar	National Grid Renewables	Belgrade, MN	2 GWh	Apr 2019	Dec 2024	Solar
Holland Energy Facility	NAES Corporation - (WA)	Beecher City, IL	1 TWh	Aug 2002	Sep 2025	Natural Gas
Contrail Wind Farm	MidAmerican Energy Co	Bedford, IA	310 GWh	Nov 2020	Sep 2025	Wind
Sherco Solar II	Northern States Power Co - Minnesota	Becker, MN	19 GWh	-	Sep 2025	Solar
Sherburne County	Northern States Power Co - Minnesota	Becker, MN	7 TWh	Mar 1976	Sep 2025	Subbituminous Coal : 99.9%
Beaver Island	Great Lakes Energy Coop	Beaver Island, MI	71 MWh	Aug 2000	Dec 2024	Distillate Fuel Oil
Walleye Wind	Walleye Wind, LLC	Beaver Creek, MN	472 GWh	Nov 2022	Sep 2025	Wind
Goodyear Beaumont Chemical Plant	Goodyear Tire & Rubber Co	Beaumont, TX	271 GWh	Feb 1987	Sep 2025	Natural Gas : 98.5% Waste/Other Oil : 1.5%
ExxonMobil Beaumont Refinery	ExxonMobil Oil Corp	Beaumont, TX	4 TWh	Dec 1965	Sep 2025	Natural Gas : 96.9% Other Gas : 3.1%
Cass County Renewable Energy Center	Union Electric Co - (MO)	Beardstown, IL	281 GWh	Nov 2024	Sep 2025	Solar
SAU Tech	Today's Power, Inc.	Bearden, AR	2 GWh	Jun 2019	Dec 2024	Solar
Henry Station	City of Bay City - (MI)	Bay City, MI	653 MWh	Apr 1993	Dec 2024	Natural Gas : 94.6% Distillate Fuel Oil : 5.4%
Water Street Station	City of Bay City - (MI)	Bay City, MI	239 MWh	Jul 1980	Dec 2024	Natural Gas : 86.5% Distillate Fuel Oil : 13.5%
Battle Creek Mill	RockTenn-Battle Creek Mill	Battle Creek, MI	4 GWh	Dec 1950	Dec 2024	Natural Gas
Cereal City Solar, LLC	Cereal City Solar, LLC	Battle Creek, MI	197 GWh	Nov 2023	Sep 2025	Solar
13 Mile Solar, LLC	13 Mile Solar, LLC	Battle Creek, MI	4 GWh	Nov 2020	Dec 2024	Solar
Calhoun Solar	Invenergy Services LLC	Battle Creek, MI	337 GWh	Nov 2022	Sep 2025	Solar
Louisiana 1	Entergy Louisiana LLC	Baton Rouge, LA	3 TWh	Sep 1951	Sep 2025	Natural Gas : 71.5% Other Gas : 28.5%
Formosa Plastics	Formosa Plastics Corp	Baton Rouge, LA	402 GWh	Apr 1985	Dec 2024	Natural Gas
ExxonMobil Baton Rouge Turbine Generator	Exxon Mobil Corp	Baton Rouge, LA	654 GWh	Apr 1990	Dec 2024	Natural Gas
LSU Cogen	LSU and A&M College	Baton Rouge, LA	10 GWh	Nov 2004	Sep 2025	Natural Gas
Rugby Wind Power Project	Avangrid Power LLC	Barton, ND	335 GWh	Nov 2009	Dec 2024	Wind
Barron Solar Array	AEP Onsite Partners, LLC	Barron, WI	6 GWh	Jul 2021	Dec 2024	Solar
Barron	City of Barron - (WI)	Barron, WI	342 MWh	Jul 1923	Dec 2024	Water
Bancroft	Bancroft Municipal Utilities	Bancroft, IA	96 MWh	Dec 1947	Dec 2024	Distillate Fuel Oil
Georgetown (Polk Burnett)	Greenbacker Renewable Energy Corporation	Balsam Lake, WI	4 GWh	Oct 2023	Dec 2024	Solar
Teche	Cleco Power LLC	Baldwin, LA	21 GWh	Jun 1953	Dec 2024	Natural Gas
Baldwin Energy Complex	Dynegy Midwest Generation Inc	Baldwin, IL	7 TWh	Jun 1970	Sep 2025	Subbituminous Coal : 99.8%
Baldwin Solar BESS	Vistra Corp	Baldwin, IL	121 GWh	Nov 2024	Sep 2025	Solar
Timmerman (CSG)	Elora LLC	Balaton, MN	2 GWh	Nov 2022	Dec 2024	Solar
Diamond Willow Wind Facility	Montana-Dakota Utilities Co	Baker, MT	86 GWh	Nov 2007	Dec 2024	Wind
Greenwood Solar Farm	DTE Electric Company	Avoca, MI	2 GWh	Dec 2015	Sep 2025	Solar
Greenwood (MI)	DTE Electric Company	Avoca, MI	984 GWh	Jun 1979	Sep 2025	Natural Gas
Agassiz Beach LLC	CHI Operations Inc	Averill, MN	4 GWh	Jan 2001	Dec 2024	Wind
Woodruff County Solar	Arkansas Electric Coop Corp	Augusta, AR	219 GWh	Sep 2024	Sep 2025	Solar
Heartland Divide II	Heartland Divide II	Audubon, IA	790 GWh	Feb 2022	Sep 2025	Wind
Rafterville Solar	Rafterville Solar, LLC	Atwater, MN	2 GWh	Jun 2023	Dec 2024	Solar
Atwater Solar	Enel Green Power NA, Inc.	Atwater, MN	8 GWh	Nov 2016	Dec 2024	Solar
USS Turkey Solar LLC CSG	Standard Solar	Atwater, MN	2 GWh	Dec 2019	Dec 2024	Solar
Atlantic	Atlantic Municipal Utilities	Atlantic, IA	110 MWh	Aug 1966	Dec 2024	Natural Gas
Athens MN CONX	SoCore Energy LLC	Athens, MN	10 GWh	Nov 2018	Dec 2024	Solar
Astoria Station	Otter Tail Power Co	Astoria, SD	459 GWh	Mar 2021	Sep 2025	Natural Gas
The GSI Group LLC at Assumption	Luminace Solar Illinois 2, LLC	Assumption, IL	2 GWh	Dec 2020	Dec 2024	Solar
Otter Creek Ethanol Poet - Ashton	Otter Creek Ethanol LLC - Poet Ashton	Ashton, IA	43 GWh	Feb 2004	Sep 2025	Natural Gas
Prairie Wolf Solar LLC	National Grid Renewables	Ashmore Township, IL	383 GWh	Oct 2021	Sep 2025	Solar
Tatanka Wind Power LLC	Acciona Wind Energy USA LLC	Ashley, ND	465 GWh	Dec 2007	Sep 2025	Wind
Polaris Solar Park	DTE Electric Company	Ashley, MI	46 GWh	-	Sep 2025	Solar
White River (WI)	Northern States Power Co - Minnesota	Ashland, WI	4 GWh	Dec 1906	Dec 2024	Water
Bay Front	Northern States Power Co - Minnesota	Ashland, WI	160 GWh	Dec 1948	Dec 2024	Wood/Wood Waste Solids : 95.3% Tire-derived Fuels : 4.1% Natural Gas : 0.6%
Clearwater Paper APP CB	Clearwater Paper Corporation	Arkansas City, AR	126 GWh	Oct 1977	Dec 2024	Black Liquor : 61.7% Natural Gas : 38.1%
Degray	USCE -Vickburg District	Arkadelphia, AR	211 GWh	Jan 1972	Sep 2025	Water
South Central Electric Cooperative	Today's Power, Inc.	Arkadelphia, AR	2 GWh	Jul 2019	Dec 2024	Solar
Veolia (Gum Springs)	Today's Power, Inc.	Arkadelphia, AR	3 GWh	Jul 2024	Dec 2024	Solar
Argyle	City of Argyle - (WI)	Argyle, WI	24 MWh	Dec 1928	Dec 2024	Water : 87.5% Distillate Fuel Oil : 12.5%
Zimmerman Energy	Landfill Energy Systems	Argos, IN	40 GWh	Oct 2014	Sep 2025	Landfill Gas
Arcadia Solar	Butter Solar, LLC	Arcadia, WI	8 GWh	Aug 2019	Dec 2024	Solar
Arcadia Electric	City of Arcadia - (WI)	Arcadia, WI	150 MWh	Dec 1929	Dec 2024	Distillate Fuel Oil : 67.3% Natural Gas : 32.7%
Kimberly Mill	City of Kaukauna	Appleton, WI	14 GWh	Dec 1925	Dec 2024	Water
Appleton	Wisconsin Electric Power Co	Appleton, WI	6 GWh	Jul 1916	Dec 2024	Water
Apple Canyon Lake Solar	ACM Solar, LLC.	Apple River, IL	3 GWh	Nov 2020	Dec 2024	Solar
Antigo-Forrest Street Solar Project	Wisconsin Public Service Corp	Antigo, WI	279 MWh	Oct 2024	Dec 2024	Solar
Schueler Community Solar	Schueler Community Solar LLC	Annandale, MN	2 GWh	Jul 2020	Dec 2024	Solar
Annandale Solar	Enel Green Power NA, Inc.	Annandale, MN	12 GWh	Nov 2016	Dec 2024	Solar
Domino Farms Solar	DTE Electric Company	Ann Arbor, MI	1 GWh	Aug 2015	Sep 2025	Solar
Warner Lambert	University of Michigan NCampus Research	Ann Arbor, MI	24 GWh	Jul 1989	Sep 2025	Natural Gas
Peoples Generating Station	North American Natural Res	Ann Arbor, MI	17 GWh	Aug 1995	Dec 2023	Landfill Gas
University of Michigan	University of Michigan	Ann Arbor, MI	209 GWh	Dec 1974	Sep 2025	Natural Gas
Anita	City of Anita - (IA)	Anita, IA	13 MWh	Sep 1939	Dec 2024	Distillate Fuel Oil
Roseman	Roseman Energy, LLC	Anita, IA	7 GWh	Jan 2017	Dec 2024	Wind
Green Energy Machine	Green Energy Machine, LLC	Anita, IA	7 GWh	May 2016	Dec 2024	Wind
NCAH Central Utility Plant	National Centers for Animal Health	Ames, IA	3 GWh	May 1996	Aug 2025	Natural Gas : 96.9% Distillate Fuel Oil : 3.1%
Michelangelo Wind 4 LLC	Michelangelo Wind 4 LLC	Ames, IA	10 GWh	Nov 2016	Dec 2024	Wind
ISU Customer Hosted 1MW Solar Project	Interstate Power and Light Co	Ames, IA	2 GWh	Apr 2024	Dec 2024	Solar
IA - City of Ames - Airport Road	Forefront Power, LLC	Ames, IA	3 GWh	Nov 2020	Dec 2024	Solar
Ames Electric Services Power Plant	City of Ames - (IA)	Ames, IA	306 GWh	Apr 1968	Dec 2024	Natural Gas : 90.9% Other Biomass Solids : 9.1%
Iowa State University	Iowa State University	Ames, IA	81 GWh	Sep 1960	Sep 2025	Natural Gas
Ames GT	City of Ames - (IA)	Ames, IA	420 MWh	Apr 1972	Dec 2024	Distillate Fuel Oil
Winona Solar	Winona Solar I LLC	Altura, MN	2 GWh	Jul 2019	Dec 2024	Solar
Winona Garden	Winona Garden LLC	Altura, MN	2 GWh	Oct 2023	Dec 2024	Solar
USS Bluff Country Solar CSG	United States Solar Corporation	Altura, MN	2 GWh	Nov 2020	Dec 2024	Solar
Altamont	City of Altamont - (IL)	Altamont, IL	56 MWh	Dec 2001	Dec 2024	Distillate Fuel Oil
Storm Lake 1	ALLETE Clean Energy	Alta, IA	85 GWh	Apr 1999	Dec 2024	Wind

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