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
Agriwind	Agriwind Holdings, LLC	Tiskilwa, IL	13 GWh	Jun 2007	Dec 2024	Wind
Packaging of America Tomahawk Mill	PCA-Tomahawk Mill	Tomahawk, WI	111 GWh	Dec 1919	Dec 2024	Wood/Wood Waste Solids : 35.7% Natural Gas : 34.2% Black Liquor : 18.1% Water : 11.7%
Tomahawk	Wisconsin Public Service Corp	Tomahawk, WI	11 GWh	Dec 1937	Dec 2024	Water
Briscoe 1A	7th Road Solar 1, LLC (Briscoe 1A)	Tonica, IL	4 GWh	Jan 2023	Dec 2024	Solar
Tatanka Ridge	Tatanka Ridge LLC	Toronto, SD	561 GWh	Dec 2020	Feb 2026	Wind
Tower	Wolverine Power Supply Coop	Tower, MI	62 MWh	Feb 1971	Dec 2024	Distillate Fuel Oil
Potato Rapids	Wisconsin Public Service Corp	Town of Porterfield, WI	4 GWh	Apr 1921	Dec 2024	Water
Grant County	Wisconsin Power & Light Co	Town of Potosi, WI	378 GWh	Apr 2024	Feb 2026	Solar
Caldron Falls	Wisconsin Public Service Corp	Town of Stephenson, WI	14 GWh	Oct 1924	Dec 2024	Water
High Falls (WI)	Wisconsin Public Service Corp	Town of Stephenson, WI	16 GWh	Jul 1910	Dec 2024	Water
Johnson Falls	Wisconsin Public Service Corp	Town of Stephenson, WI	10 GWh	Jun 1923	Dec 2024	Water
Sandstone Rapids	Wisconsin Public Service Corp	Town of Stephenson, WI	9 GWh	Dec 1924	Dec 2024	Water
Antares Community Solar	Antares Community Solar	Tracy, MN	5 GWh	May 2018	Dec 2024	Solar
Aquarius Community Solar	National Grid Renewables	Tracy, MN	2 GWh	Apr 2019	Dec 2024	Solar
Traer Wind Project	City of Traer - (IA)	Traer, IA	6 GWh	Sep 2010	Dec 2024	Wind
Johnson Co. Solar RES	Hoosier Energy R E C, Inc	Trafalgar, IN	2 GWh	Sep 2016	Dec 2024	Solar
TCLP Solar Phase 1	Heritage Sustainable Energy. LLC	Traverse City, MI	1 GWh	Sep 2017	Dec 2024	Solar
M72 West Solar	Heritage Sustainable Energy. LLC	Traverse City, MI	3 GWh	Nov 2019	Dec 2024	Solar
Lakefield Junction	Great River Energy	Trimont, MN	64 GWh	May 2001	Dec 2024	Natural Gas
Trimont Area Wind Farm	Avangrid Power LLC	Trimont, MN	379 GWh	Oct 2005	Dec 2024	Wind
OREG 3 Inc	Ormat Nevada Inc	Trimont, MN	44 GWh	Jul 2010	Feb 2026	Waste Heat
Elm Creek Wind LLC	Avangrid Power LLC	Trimont, MN	176 GWh	Nov 2008	Dec 2024	Wind
Elm Creek Wind II LLC	Avangrid Power LLC	Trimont, MN	205 GWh	Nov 2010	Dec 2024	Wind
Troy Solar	Southern Indiana Gas & Elec Co	Troy, IN	94 GWh	Mar 2021	Feb 2026	Solar
Truman	City of Truman	Truman, MN	39 MWh	Aug 1938	Dec 2024	Distillate Fuel Oil
Viresco Turtle Lake	Viresco Turtle Lake	Turtle Lake, WI	8 GWh	Aug 2013	Dec 2024	Other Biomass Gas
Wildwood Solar Plant	Wildwood Solar, LLC	Tutwiler, MS	39 GWh	-	Feb 2026	Solar
Point Beach Solar	Point Beach Solar	Two Creeks, WI	204 GWh	Aug 2021	Feb 2026	Solar
Point Beach Nuclear Plant	NextEra Energy Point Beach LLC	Two Rivers, WI	10 TWh	May 1969	Feb 2026	Nuclear
Two Creeks Solar	Wisconsin Public Service Corp	Two Rivers, WI	193 GWh	Oct 2020	Feb 2026	Solar
Ubly	Thumb Electric Coop of Mich	Ubly, MI	12 MWh	May 1938	Dec 2024	Distillate Fuel Oil : 63.3% Natural Gas : 36.7%
Michigan Wind 1	Michigan Wind 1, LLC	Ubly, MI	158 GWh	Nov 2008	Dec 2024	Wind
Mosaic Phosphates Uncle Sam	Mosaic Phosphates Co.	Uncle Sam, LA	89 GWh	Dec 1967	Feb 2026	Waste Heat
Henryville Solar RES	Hoosier Energy R E C, Inc	Underwood, IN	2 GWh	Aug 2016	Dec 2024	Solar
Coal Creek	Rainbow Energy Center	Underwood, ND	8 TWh	May 1979	Feb 2026	Refined Coal : 99.9%
Sauk Solar Park	DTE Electric Company	Union City, MI	223 GWh	-	Feb 2026	Solar
Paris Solar	Wisconsin Electric Power Co	Union Grove, WI	298 GWh	Nov 2024	Feb 2026	Solar
Paris (WI)	Wisconsin Electric Power Co	Union Grove, WI	227 GWh	Feb 1995	Dec 2024	Natural Gas
Cerro Gordo Wind Farm	Cerro Gordo Wind Farm	Union, IA	168 GWh	Jul 2020	Feb 2026	Wind
Cross Winds Energy Park	Consumers Energy Co - (MI)	Unionville, MI	721 GWh	Nov 2014	Dec 2024	Wind
Solar Star Urbana Landfill East	Solar Star Urbana Landfill East, LLC	Urbana, IL	4 GWh	Sep 2021	Dec 2024	Solar
Solar Star Urbana Landfill Central	Solar Star Urbana Landfill Central, LLC	Urbana, IL	4 GWh	Oct 2021	Dec 2024	Solar
St. James Solar (LA)	St. James Solar, LLC	Vacherie, LA	45 GWh	Jan 2023	Dec 2024	Solar
Valparaiso Solar, LLC	AES Distributed Energy	Valparaiso, IN	1 GWh	Nov 2012	Sep 2024	Solar
Portage Solar	Ecos Energy LLC	Valparaiso, IN	1 GWh	Oct 2012	Dec 2024	Solar
Crossroads Solar (IN)	Crossroads Solar, LLC - (IN)	Van Buren Township, IN	41 GWh	-	Feb 2026	Solar
Huck Finn Renewable Energy Center	Union Electric Co - (MO)	Vandalia, MO	415 GWh	Nov 2024	Feb 2026	Solar
Audrain Generating Station	Union Electric Co - (MO)	Vandalia, MO	146 GWh	Jan 2001	Dec 2024	Natural Gas
Velva Windfarm LLC	Acciona Wind Energy USA LLC	Velva, ND	25 GWh	Nov 2005	Dec 2024	Wind
Assembly Solar Project	Assembly Solar I, LLC	Venice Township, MI	102 GWh	Nov 2020	Feb 2026	Solar
Venice	Union Electric Co - (MO)	Venice, IL	27 GWh	May 2002	Dec 2024	Natural Gas
Community Wind North LLC	Northern States Power Co - Minnesota	Verdi Township, MN	115 GWh	Apr 2011	Dec 2024	Wind
Epic Verona	Epic Hosting, LLC	Verona, WI	3 GWh	May 2009	Dec 2024	Solar : 91.9% Distillate Fuel Oil : 8.1%
Vestaburg	Wolverine Power Supply Coop	Vestaburg, MI	2 GWh	Dec 1958	Dec 2024	Natural Gas
Ergon Refining Vicksburg	Ergon Refining Inc	Vicksburg, MS	32 GWh	Feb 1995	Dec 2024	Natural Gas
International Paper Vicksburg Mill	International Paper Co-Vicksbg	Vicksburg, MS	212 GWh	Dec 1966	Feb 2026	Black Liquor : 53.4% Natural Gas : 29.3% Wood/Wood Waste Solids : 17.3%
Sidney A Murray Jr Hydroelectric	First National Bank-Commerce	Vidalia, LA	885 GWh	Apr 1990	Dec 2024	Water
Leven Garden Solar	Leven Garden LLC	Villard, MN	2 GWh	Apr 2020	Dec 2024	Solar
Swan Garden	Swan Garden LLC	Villard, MN	2 GWh	Sep 2021	Dec 2024	Solar
Villisca Municipal Power Plant	City of Villisca - (IA)	Villisca, IA	7 MWh	May 2003	Dec 2024	Distillate Fuel Oil
Viola	Village of Viola - (WI)	Viola, WI	5 MWh	Dec 2001	Dec 2024	Distillate Fuel Oil
Double Back Diamond	Double Back Diamond Solar Power, LLC	Virden, IL	888 GWh	Oct 2024	Feb 2026	Solar
Liberty Pole DPC Solar	SoCore Energy LLC	Viroqua, WI	2 GWh	Apr 2017	Feb 2026	Solar
Wabasha Holdco Solar CSG	Wabasha Holdco LLC	Wabasha, MN	2 GWh	Feb 2017	Dec 2024	Solar
Wabasha Solar	Wabasha Solar LLC	Wabasha, MN	2 GWh	Jul 2019	Dec 2024	Solar
SolarClub 20 LLC	Nautilus Solar Solutions	Wabasha, MN	2 GWh	Nov 2020	Dec 2024	Solar
Lake Waconia Community Solar Garden	Lake Waconia Solar LLC	Waconia, MN	2 GWh	Jan 2018	Dec 2024	Solar
Porter Way Community Solar Garden	AEP Onsite Partners, LLC	Waconia, MN	5 GWh	Jan 2018	Feb 2026	Solar
USS DVL Solar CSG	Standard Solar	Waconia, MN	2 GWh	Jul 2019	Dec 2024	Solar
Lake Waconia IV Community Solar Garden	Lake Waconia Solar IV LLC	Waconia, MN	2 GWh	Jan 2018	Dec 2024	Solar
USS King 2 CSG	Standard Solar	Waconia, MN	2 GWh	Jul 2019	Dec 2024	Solar
Held Solar Project	DG Minnesota CSG, LLC	Waite Park, MN	8 GWh	Feb 2019	Dec 2024	Solar
GSSP Schneider LLC	Green Street Power Partners	Waite Park, MN	9 GWh	Sep 2019	Dec 2024	Solar
Lahr 1, LLC	SoCore Energy LLC	Wakefield Township, MN	9 GWh	Dec 2017	Dec 2024	Solar
Walkerton	Indiana Municipal Power Agency	Walkerton, IN	2 GWh	Jun 2022	Dec 2024	Solar
Walnut Wind Farm	MidAmerican Energy Co	Walnut, IA	584 GWh	Nov 2008	Dec 2024	Wind
Wapello Solar LLC	Wapello Solar LLC	Wapello, IA	203 GWh	Feb 2021	Feb 2026	Solar
Northeast (MI)	DTE Electric Company	Warren, MI	6 GWh	Apr 1966	Dec 2024	Natural Gas : 84.7% Distillate Fuel Oil : 15.3%
Blue Bird Solar, LLC	Blue Bird Solar, LLC	Warrenton, MO	299 GWh	Nov 2024	Feb 2026	Solar
Severson Garden	Severson HoldCo LLC	Waseca, MN	943 MWh	Sep 2020	Dec 2024	Solar
Silver Lake Garden	Excelsior Energy Capital	Waseca, MN	2 GWh	Dec 2020	Dec 2024	Solar
Lily Garden	Lily Garden LLC	Waseca, MN	2 GWh	Jun 2023	Dec 2024	Solar
Clear Garden CSG	Clear Garden LLC	Waseca, MN	2 GWh	Aug 2019	Dec 2024	Solar
Loon Garden	Loon Garden LLC	Waseca, MN	2 GWh	Jan 2020	Dec 2024	Solar
Buffalo Garden	Buffalo Garden LLC	Waseca, MN	2 GWh	Feb 2020	Dec 2024	Solar
Novel David Solar LLC CSG	REA Investments, LLC	Waseca, MN	2 GWh	Feb 2022	Dec 2024	Solar
Everson Garden	Everson Garden LLC	Waseca, MN	2 GWh	Apr 2022	Dec 2024	Solar
Waseca Solar	Enel Green Power NA, Inc.	Waseca, MN	21 GWh	Nov 2016	Dec 2024	Solar
WasecaSun	National Grid Renewables	Waseca, MN	9 GWh	Jan 2018	Dec 2024	Solar
Winegar CSG	Terraform Arcadia	Waseca, MN	2 GWh	Sep 2018	Dec 2024	Solar
CF Novel Solar CSG Gardens Five, LLC	Cypress Creek Renewables	Waseca, MN	6 GWh	Nov 2017	Dec 2024	Solar
Novel Winegar Partnership Solar CSG	REA Investments, LLC	Waseca, MN	2 GWh	Mar 2021	Dec 2024	Solar
Novel Kanewischer Solar CSG	REA Investments, LLC	Waseca, MN	982 MWh	Sep 2020	Dec 2024	Solar
Novel Haley Solar CSG	REA Investments, LLC	Waseca, MN	2 GWh	May 2020	Dec 2024	Solar
Richland Township Solar, LLC	Birch Creek Power, LLC	Washburn, IL	77 GWh	-	Feb 2026	Solar
Washington Island	Washington Island El Coop, Inc	Washington Island, WI	9 MWh	Nov 1945	Dec 2023	Distillate Fuel Oil
St. Clair Solar 3	Pivot Energy	Washington Park, IL	158 MWh	May 2024	Dec 2024	Solar
IMPA Washington Solar Park 2	Indiana Municipal Power Agency	Washington, IN	14 GWh	Jun 2023	Dec 2024	Solar
IMPA Washington Solar Park	Indiana Municipal Power Agency	Washington, IN	4 GWh	Aug 2016	Dec 2024	Solar
Waterford Holdco CSG	Waterford Holdco LLC	Waterford, MN	4 GWh	Oct 2017	Dec 2024	Solar

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