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	Apr 2026
Annual Generation	664.4 TWh
Power Plants	2,831
Utilities	1,296
Ranked #2 out of 65 in terms of net annual generation
Ranked #2 out of 54 in terms of annual generation from natural gas
Power Plant Types	Natural Gas \| 36.9% Coal \| 27.6% Wind \| 14.8% Nuclear \| 13.6% Solar \| 5% Water \| 1.4% Other Fuel \| 0.5%

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Daily Net Generation for Midcontinent Independent System Operator, Inc. for the past 3 Years

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Plant Name	Utility	Location	Annual Generation	Plant Date	Last Update	Fuel Types
Century	MidAmerican Energy Co	Blairsburg, IA	572 GWh	Aug 2005	Dec 2024	Wind
Blue Prairie Solar, LLC	Greenbacker Renewable Energy Corporation	Black River Falls, WI	4 GWh	Jul 2021	Dec 2024	Solar
Shamrock Solar LLC	Greenbacker Renewable Energy Corporation	Black River Falls, WI	5 GWh	Nov 2021	Dec 2024	Solar
Biron	Consolidated Water Power Co	Biron, WI	31 GWh	Dec 1895	Dec 2024	Water
USS Wonder Solar LLC	United States Solar Corporation	Bird Island, MN	2 GWh	Jun 2023	Dec 2024	Solar
USS Prokosch Solar LLC	United States Solar Corporation	Bird Island, MN	2 GWh	May 2022	Dec 2024	Solar
Windom Wind Project	Midwest Power Partners LLC	Bingham Lake, MN	33 GWh	Feb 2006	Dec 2024	Wind
Big Stone	Otter Tail Power Co	Big Stone City, SD	2 TWh	Apr 1975	Feb 2026	Subbituminous Coal : 99.8%
Rogers	Consumers Energy Co - (MI)	Big Rapids, MI	16 GWh	Dec 1921	Dec 2024	Water
USS Big Lake 1 Solar CSG	United States Solar Corporation	Big Lake, MN	2 GWh	Nov 2018	Dec 2024	Solar
Big Lake Project CSG	DG Minnesota CSG, LLC	Big Lake, MN	9 GWh	May 2018	Dec 2024	Solar
Big Lake Holdco Solar CSG	Big Lake Holdco LLC	Big Lake, MN	8 GWh	Aug 2017	Dec 2024	Solar
Coyote	Otter Tail Power Co	Beulah, ND	2 TWh	Apr 1981	Feb 2026	Lignite Coal : 99.8%
Berryville School District Solar	Today's Power, Inc.	Berryville, AR	2 GWh	Jan 2018	Dec 2024	Solar
Berlin Landfill Gas	WM Renewable Energy LLC	Berlin, WI	14 GWh	Jul 2001	Dec 2024	Landfill Gas
FECC Solar Benton	Today's Power, Inc.	Benton, AR	967 MWh	Feb 2017	Oct 2024	Solar
Benson City of	City of Benson - (MN)	Benson, MN	54 MWh	Apr 2002	Dec 2024	Distillate Fuel Oil
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	4 TWh	Apr 2020	Feb 2026	Natural Gas : 99.9%
Paddock Solar	Wisconsin Power & Light Co	Beloit, WI	134 GWh	Oct 2023	Feb 2026	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%
HQC Rock River Solar Power Gen Station	HQC Rock River Solar Power Generation Station LLC	Beloit, WI	3 GWh	Jun 2016	Dec 2024	Solar
Riverside Energy Center	Wisconsin Power & Light Co	Beloit, WI	3 TWh	May 2004	Feb 2026	Natural Gas
Bellevue	City of Bellevue - (IA)	Bellevue, IA	61 MWh	Jun 1947	Dec 2024	Distillate Fuel Oil
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
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
Linden 03 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
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
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	2 TWh	Aug 2002	Feb 2026	Natural Gas
Contrail Wind Farm	MidAmerican Energy Co	Bedford, IA	327 GWh	Nov 2020	Feb 2026	Wind
Sherco Solar II	Northern States Power Co - Minnesota	Becker, MN	104 GWh	-	Feb 2026	Solar
Sherburne County	Northern States Power Co - Minnesota	Becker, MN	7 TWh	Mar 1976	Feb 2026	Subbituminous Coal : 99.8%
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	468 GWh	Nov 2022	Feb 2026	Wind
ExxonMobil Beaumont Refinery	ExxonMobil Oil Corp	Beaumont, TX	4 TWh	Dec 1965	Feb 2026	Natural Gas : 96.7% Other Gas : 3.3%
Goodyear Beaumont Chemical Plant	Goodyear Tire & Rubber Co	Beaumont, TX	252 GWh	Feb 1987	Feb 2026	Natural Gas : 98.3% Waste/Other Oil : 1.7%
Cass County Renewable Energy Center	Union Electric Co - (MO)	Beardstown, IL	335 GWh	Nov 2024	Feb 2026	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
13 Mile Solar, LLC	13 Mile Solar, LLC	Battle Creek, MI	4 GWh	Nov 2020	Dec 2024	Solar
Cereal City Solar, LLC	Cereal City Solar, LLC	Battle Creek, MI	197 GWh	Nov 2023	Feb 2026	Solar
Calhoun Solar	Invenergy Services LLC	Battle Creek, MI	355 GWh	Nov 2022	Feb 2026	Solar
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
Louisiana 1	Entergy Louisiana LLC	Baton Rouge, LA	3 TWh	Sep 1951	Feb 2026	Natural Gas : 72.7% Other Gas : 27.3%
LSU Cogen	LSU and A&M College	Baton Rouge, LA	63 GWh	Nov 2004	Feb 2026	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	6 TWh	Jun 1970	Feb 2026	Subbituminous Coal : 99.7%
Baldwin Solar BESS	Vistra Corp	Baldwin, IL	142 GWh	Nov 2024	Feb 2026	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	Feb 2026	Solar
Greenwood (MI)	DTE Electric Company	Avoca, MI	1 TWh	Jun 1979	Feb 2026	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	195 GWh	Sep 2024	Feb 2026	Solar
Heartland Divide II	Heartland Divide II	Audubon, IA	781 GWh	Feb 2022	Feb 2026	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	478 GWh	Mar 2021	Feb 2026	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	45 GWh	Feb 2004	Feb 2026	Natural Gas
Prairie Wolf Solar LLC	National Grid Renewables	Ashmore Township, IL	378 GWh	Oct 2021	Feb 2026	Solar
Tatanka Wind Power LLC	Acciona Wind Energy USA LLC	Ashley, ND	436 GWh	Dec 2007	Feb 2026	Wind
Polaris Solar Park	DTE Electric Company	Ashley, MI	76 GWh	-	Feb 2026	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	148 GWh	Jan 1972	Feb 2026	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	41 GWh	Oct 2014	Feb 2026	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	Feb 2026	Solar
University of Michigan	University of Michigan	Ann Arbor, MI	233 GWh	Dec 1974	Feb 2026	Natural Gas

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#60	Alcoa Power Generating, Inc. - Yadkin Division	582.3 GWh	4
#27	Associated Electric Cooperative, Inc.	23.9 TWh	47
#13	Duke Energy Carolinas	112.5 TWh	565
#52	Duke Energy Progress West	4.4 TWh	10
#23	Louisville Gas and Electric Company and Kentucky Utilities Company	34.0 TWh	25
#1	PJM Interconnection, LLC	881.5 TWh	2,465
#6	Southern Company Services, Inc. - Trans	250.9 TWh	417
#5	Southwest Power Pool	302.9 TWh	835
#51	Southwestern Power Administration	4.6 TWh	34
#9	Tennessee Valley Authority	163.1 TWh	204

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#1	PJM Interconnection, LLC	881.5 TWh	2,465
#2	Midcontinent Independent System Operator, Inc.	664.4 TWh	2,831
#3	Electric Reliability Council of Texas, Inc.	488.2 TWh	1,313
#5	Southwest Power Pool	302.9 TWh	835
#6	Southern Company Services, Inc. - Trans	250.9 TWh	417
#7	California Independent System Operator	176.8 TWh	2,075
#9	Tennessee Valley Authority	163.1 TWh	204
#10	Florida Power & Light Co.	150.9 TWh	187
#12	New York Independent System Operator	134.4 TWh	1,211
#13	Duke Energy Carolinas	112.5 TWh	565