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
McDonald Solar Farm, LLC	Cypress Creek Renewables	West Terre Haute, IN	8 GWh	Nov 2015	Dec 2024	Solar
J H Campbell	Consumers Energy Co - (MI)	West Olive, MI	8 TWh	Sep 1962	Sep 2025	Subbituminous Coal : 99.4%
Plant 31 Paper Mill	Graphic Packaging International	West Monroe, LA	523 GWh	Dec 1963	Dec 2024	Natural Gas : 63.2% Black Liquor : 25.1% Wood/Wood Waste Solids : 11.7%
West Liberty	City of West Liberty - (IA)	West Liberty, IA	38 MWh	Sep 1974	Dec 2024	Distillate Fuel Oil
Lake Charles Power	Entergy Louisiana LLC	West Lake, LA	6 TWh	Feb 2020	Sep 2025	Natural Gas
Tippecanoe Solar Power Plant	Duke Energy Indiana, LLC	West Lafayette, IN	3 GWh	Nov 2019	Nov 2024	Solar
Purdue CHP	Duke Energy Indiana, LLC	West Lafayette, IN	123 GWh	Feb 2022	Dec 2024	Natural Gas
Purdue University	Purdue University	West Lafayette, IN	84 GWh	Dec 1968	Sep 2025	Natural Gas : 90.8% Bituminous Coal : 9.2%
Long Lake Solar, LLC	Long Lake Solar, LLC	West Helena, AR	285 GWh	-	Sep 2025	Solar
Kern A Community Solar, LLC CSG	Kern A Community Solar, LLC	West Frankfort, IL	4 GWh	Jun 2021	Dec 2024	Solar
West Bend	City of West Bend	West Bent, IA	174 MWh	Nov 1954	Dec 2024	Distillate Fuel Oil
Regal Ware	Wisconsin Electric Power Co	West Bend, WI	3 GWh	Mar 2021	Dec 2024	Solar
Washington County	Wisconsin Electric Power Co	West Bend, WI	4 GWh	Dec 2019	Dec 2024	Solar
LA3 West Baton Rouge Solar Facility	Sol Systems	West Baton Rouge, LA	113 GWh	Aug 2020	Sep 2025	Solar
Sioux	Union Electric Co - (MO)	West Alton, MO	4 TWh	Apr 1967	Sep 2025	Subbituminous Coal : 73.2% Bituminous Coal : 26.7%
C W Tippy	Consumers Energy Co - (MI)	Wellston, MI	54 GWh	Dec 1917	Dec 2024	Water
Wellsburg Wind Project	MidAmerican Energy Co	Wellsburg, IA	469 GWh	Nov 2014	Dec 2024	Wind
Ivester Wind Farm	MidAmerican Energy Co	Wellsburg, IA	329 GWh	Nov 2018	Sep 2025	Wind
Wells IC	City of Wells - (MN)	Wells, MN	180 MWh	Oct 1950	Dec 2024	Natural Gas : 64.3% Distillate Fuel Oil : 35.7%
Welcome Wind Turbine	Federated Rural Electric Assn	Welcome, MN	6 GWh	Apr 2008	Sep 2024	Wind
Prairie Island	Northern States Power Co - Minnesota	Welch, MN	8 TWh	Jan 1974	Sep 2025	Nuclear
Schultz CSG	DG Minnesota CSG, LLC	Webster, MN	3 GWh	Oct 2018	Dec 2024	Solar
USS Centerfield Solar CSG	Standard Solar	Webster, MN	2 GWh	Oct 2019	Dec 2024	Solar
USS Webster Solar CSG	Standard Solar	Webster, MN	2 GWh	Apr 2019	Dec 2024	Solar
Webster Holdco Solar CSG	Webster Holdco LLC	Webster, MN	7 GWh	Jun 2017	Dec 2024	Solar
Veseli Community Solar Garden	Veseli Solar I LLC	Webster, MN	2 GWh	Jan 2018	Dec 2024	Solar
Webster City	City of Webster City - (IA)	Webster City, IA	809 MWh	Mar 1972	Dec 2024	Distillate Fuel Oil
WaveSun Community Solar	Generate Capital	Waverly, MN	8 GWh	Nov 2017	Dec 2024	Solar
Waverly Community Wind Project	Waverly Municipal Elec Utility	Waverly, IA	6 GWh	Nov 2001	Dec 2024	Wind
Waverly Municipal Electric North Plant	Waverly Municipal Elec Utility	Waverly, IA	232 MWh	Jul 1958	Dec 2024	Distillate Fuel Oil : 55.1% Natural Gas : 44.9%
South Plant (IA)	Waverly Municipal Elec Utility	Waverly, IA	51 MWh	Apr 2000	Dec 2024	Distillate Fuel Oil
Wautoma Solar	Wisconsin Power & Light Co	Wautoma, WI	187 GWh	Nov 2023	Sep 2025	Solar
Wausau	Wisconsin Public Service Corp	Wausau, WI	19 GWh	Feb 1921	Dec 2024	Water
Galactic Wind	Galactic Wind	Waunakee, WI	22 GWh	Nov 2012	Dec 2024	Wind
Iroquois Solar 1B LLC CSG	Iroquois Solar 1B LLC	Watseka, IL	4 GWh	Nov 2020	Dec 2024	Solar
Watervliet	Energy Developments, Inc d/b/a EDL	Watervliet, MI	28 GWh	Jan 2013	Dec 2024	Landfill Gas
Marigold Community Solar Garden, LLC	National Grid Renewables	Waterville, MN	2 GWh	Dec 2020	Dec 2024	Solar
Novel Peter Solar CSG	REA Investments, LLC	Waterville, MN	2 GWh	Aug 2021	Dec 2024	Solar
Lyra Community Solar	Lyra Community Solar	Waterville, MN	5 GWh	Jan 2018	Dec 2024	Solar
USS Water City Solar LLC CSG	United States Solar Corporation	Waterville, MN	2 GWh	Sep 2021	Dec 2024	Solar
Waterville CSG Solar Holdings LLC	Altus Power America Management, LLC	Waterville, MN	8 GWh	Feb 2018	Sep 2025	Solar
LeSun CSG, LLC	Cypress Creek Renewables	Waterville, MN	8 GWh	Dec 2017	Dec 2024	Solar
USS Water Town Solar LLC CSG	United States Solar Corporation	Waterville, MN	2 GWh	Oct 2021	Dec 2024	Solar
Deertrack Park Gas Recovery	WM Renewable Energy LLC	Watertown, WI	37 GWh	Jan 2006	Dec 2024	Landfill Gas
Concord	Wisconsin Electric Power Co	Watertown, WI	175 GWh	Jun 1993	Dec 2024	Natural Gas : 99.8%
Crowned Ridge Wind II Energy Center	Northern States Power Co - Minnesota	Watertown, SD	860 GWh	Nov 2020	Sep 2025	Wind
Crowned Ridge Wind Energy Center	Crowned Ridge Wind, LLC	Watertown, SD	820 GWh	Nov 2019	Sep 2025	Wind
Nesvold Watertown Solar	SoCore Energy LLC	Watertown, MN	9 GWh	Dec 2017	Dec 2024	Solar
Waterloo Solar (IA)	MidAmerican Energy Co	Waterloo, IA	6 GWh	Feb 2022	Dec 2024	Solar
Electrifarm	MidAmerican Energy Co	Waterloo, IA	11 GWh	Apr 1975	Dec 2024	Natural Gas
Waterloo Lundquist	MidAmerican Energy Co	Waterloo, IA	38 MWh	Mar 2000	Dec 2024	Distillate Fuel Oil
Waterloo Solar, LLC	AES Distributed Energy	Waterloo, IN	592 MWh	Dec 2011	Dec 2024	Solar
Waterloo	City of Waterloo - (IL)	Waterloo, IL	491 MWh	May 1946	Dec 2024	Natural Gas : 68.9% Distillate Fuel Oil : 31.1%
Waterford Holdco CSG	Waterford Holdco LLC	Waterford, MN	4 GWh	Oct 2017	Dec 2024	Solar
IMPA Washington Solar Park	Indiana Municipal Power Agency	Washington, IN	4 GWh	Aug 2016	Dec 2024	Solar
IMPA Washington Solar Park 2	Indiana Municipal Power Agency	Washington, IN	14 GWh	Jun 2023	Dec 2024	Solar
St. Clair Solar 3	Pivot Energy	Washington Park, IL	158 MWh	May 2024	Dec 2024	Solar
Washington Island	Washington Island El Coop, Inc	Washington Island, WI	9 MWh	Nov 1945	Dec 2023	Distillate Fuel Oil
Richland Township Solar, LLC	Birch Creek Power, LLC	Washburn, IL	62 GWh	-	Sep 2025	Solar
Novel David Solar LLC CSG	REA Investments, LLC	Waseca, MN	2 GWh	Feb 2022	Dec 2024	Solar
Lily Garden	Lily Garden LLC	Waseca, MN	2 GWh	Jun 2023	Dec 2024	Solar
Everson Garden	Everson Garden LLC	Waseca, MN	2 GWh	Apr 2022	Dec 2024	Solar
Silver Lake Garden	Excelsior Energy Capital	Waseca, MN	2 GWh	Dec 2020	Dec 2024	Solar
Severson Garden	Severson HoldCo LLC	Waseca, MN	943 MWh	Sep 2020	Dec 2024	Solar
Buffalo Garden	Buffalo Garden LLC	Waseca, MN	2 GWh	Feb 2020	Dec 2024	Solar
Loon Garden	Loon Garden LLC	Waseca, MN	2 GWh	Jan 2020	Dec 2024	Solar
Clear Garden CSG	Clear Garden LLC	Waseca, MN	2 GWh	Aug 2019	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
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
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
Waseca Solar	Enel Green Power NA, Inc.	Waseca, MN	21 GWh	Nov 2016	Dec 2024	Solar
Blue Bird Solar, LLC	Blue Bird Solar, LLC	Warrenton, MO	224 GWh	Nov 2024	Sep 2025	Solar
Northeast (MI)	DTE Electric Company	Warren, MI	6 GWh	Apr 1966	Dec 2024	Natural Gas : 84.7% Distillate Fuel Oil : 15.3%
Wapello Solar LLC	Wapello Solar LLC	Wapello, IA	210 GWh	Feb 2021	Sep 2025	Solar
Walnut Wind Farm	MidAmerican Energy Co	Walnut, IA	584 GWh	Nov 2008	Dec 2024	Wind
Walkerton	Indiana Municipal Power Agency	Walkerton, IN	2 GWh	Jun 2022	Dec 2024	Solar
Lahr 1, LLC	SoCore Energy LLC	Wakefield Township, MN	9 GWh	Dec 2017	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
Lake Waconia Community Solar Garden	Lake Waconia Solar 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
USS DVL Solar CSG	Standard Solar	Waconia, MN	2 GWh	Jul 2019	Dec 2024	Solar
Porter Way Community Solar Garden	AEP Onsite Partners, LLC	Waconia, MN	5 GWh	Jan 2018	Sep 2025	Solar
Lake Waconia IV Community Solar Garden	Lake Waconia Solar IV LLC	Waconia, MN	2 GWh	Jan 2018	Dec 2024	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
Liberty Pole DPC Solar	SoCore Energy LLC	Viroqua, WI	2 GWh	Apr 2017	Sep 2025	Solar
Double Back Diamond	Double Back Diamond Solar Power, LLC	Virden, IL	995 GWh	Oct 2024	Sep 2025	Solar
Viola	Village of Viola - (WI)	Viola, WI	5 MWh	Dec 2001	Dec 2024	Distillate Fuel Oil
Villisca Municipal Power Plant	City of Villisca - (IA)	Villisca, IA	7 MWh	May 2003	Dec 2024	Distillate Fuel Oil
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
Sidney A Murray Jr Hydroelectric	First National Bank-Commerce	Vidalia, LA	885 GWh	Apr 1990	Dec 2024	Water
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	233 GWh	Dec 1966	Sep 2025	Black Liquor : 52.7% Natural Gas : 28.5% Wood/Wood Waste Solids : 18.8%
Vestaburg	Wolverine Power Supply Coop	Vestaburg, MI	2 GWh	Dec 1958	Dec 2024	Natural Gas

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