Midcontinent Independent System Operator, Inc.

Balancing Authority Summary Information

Midcontinent Independent System Operator, Inc. is ranked #2 out of 64 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	Oct 2026
Annual Generation	677.7 TWh
Power Plants	3,095
Utilities	1,372
Ranked #2 out of 64 in terms of net annual generation
Ranked #2 out of 53 in terms of annual generation from natural gas
Power Plant Types	Natural Gas \| 37.1% Coal \| 26.2% Wind \| 15% Nuclear \| 13.8% Solar \| 6.1% 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
USS King 2 CSG	Standard Solar	Waconia, MN	2 GWh	Jul 2019	Dec 2025	Solar
Porter Way Community Solar Garden	Onsite Partners, LLC	Waconia, MN	5 GWh	Jan 2018	Jul 2026	Solar
GSSP Schneider LLC	Green Street Power Partners	Waite Park, MN	8 GWh	Sep 2019	Dec 2025	Solar
Held Solar Project	Madison Energy Investments LLC	Waite Park, MN	8 GWh	Feb 2019	Sep 2025	Solar
Lahr 1, LLC	SoCore Energy LLC	Wakefield Township, MN	8 GWh	Dec 2017	Dec 2025	Solar
Walkerton	Indiana Municipal Power Agency	Walkerton, IN	2 GWh	Jun 2022	Dec 2025	Solar
Walnut Wind Farm	MidAmerican Energy Co	Walnut, IA	558 GWh	Nov 2008	Dec 2025	Wind
Wapello Solar LLC	Wapello Solar LLC	Wapello, IA	203 GWh	Feb 2021	Jul 2026	Solar
Agrimony 1	Greenbacker Renewable Energy Corporation	Warren, IL	2 GWh	Dec 2024	Dec 2025	Solar
Agrimony 2	Greenbacker Renewable Energy Corporation	Warren, IL	2 GWh	May 2025	Dec 2025	Solar
Northeast (MI)	DTE Electric Company	Warren, MI	15 GWh	Apr 1966	Dec 2025	Natural Gas : 86.8% Distillate Fuel Oil : 13.2%
Split Rail Solar Energy LLC	Invenergy Services LLC	Warrenton, MO	171 GWh	-	Jun 2026	Solar
Blue Bird Solar, LLC	Blue Bird Solar, LLC	Warrenton, MO	327 GWh	Nov 2024	Jul 2026	Solar
Novel David Solar LLC CSG	REA Investments, LLC	Waseca, MN	2 GWh	Feb 2022	Dec 2025	Solar
Lily Garden	Lily Garden LLC	Waseca, MN	2 GWh	Jun 2023	Dec 2025	Solar
Clear Garden CSG	Clear Garden LLC	Waseca, MN	2 GWh	Aug 2019	Dec 2025	Solar
Silver Lake Garden	Excelsior Energy Capital	Waseca, MN	2 GWh	Dec 2020	Dec 2025	Solar
Everson Garden	Everson Garden LLC	Waseca, MN	2 GWh	Apr 2022	Dec 2025	Solar
Severson Garden	Severson HoldCo LLC	Waseca, MN	2 GWh	Sep 2020	Dec 2025	Solar
Loon Garden	Loon Garden LLC	Waseca, MN	2 GWh	Jan 2020	Dec 2025	Solar
Waseca Solar	Enel Green Power NA, Inc.	Waseca, MN	21 GWh	Nov 2016	Dec 2025	Solar
WasecaSun	Geronimo Power	Waseca, MN	9 GWh	Jan 2018	Dec 2025	Solar
CF Novel Solar CSG Gardens Five, LLC	SunStrong Management, LLC	Waseca, MN	6 GWh	Nov 2017	Dec 2025	Solar
Novel Kanewischer Solar CSG	REA Investments, LLC	Waseca, MN	2 GWh	Sep 2020	Dec 2025	Solar
Novel Haley Solar CSG	REA Investments, LLC	Waseca, MN	2 GWh	May 2020	Dec 2025	Solar
Novel Winegar Partnership Solar CSG	REA Investments, LLC	Waseca, MN	2 GWh	Mar 2021	Dec 2025	Solar
Winegar CSG	Terraform Arcadia	Waseca, MN	2 GWh	Sep 2018	Dec 2025	Solar
Buffalo Garden	Buffalo Garden LLC	Waseca, MN	2 GWh	Feb 2020	Dec 2025	Solar
Richland Township Solar II, LLC	Birch Creek Power, LLC	Washburn, IL	5 GWh	Aug 2025	Dec 2025	Solar
Richland Township Solar, LLC	Birch Creek Power, LLC	Washburn, IL	80 GWh	Dec 2024	Jul 2026	Solar
Washington Island	Washington Island El Coop, Inc	Washington Island, WI	5 MWh	Nov 1945	Dec 2025	Distillate Fuel Oil
St. Clair Solar 3	Pivot Energy	Washington Park, IL	4 GWh	May 2024	Dec 2025	Solar
IMPA Washington Solar Park 2	Indiana Municipal Power Agency	Washington, IN	19 GWh	Jun 2023	Dec 2025	Solar
IMPA Washington Solar Park	Indiana Municipal Power Agency	Washington, IN	4 GWh	Aug 2016	Dec 2025	Solar
Waterford Holdco CSG	Waterford Holdco LLC	Waterford, MN	4 GWh	Oct 2017	Dec 2025	Solar
Waterloo	City of Waterloo - (IL)	Waterloo, IL	751 MWh	May 1946	Dec 2025	Natural Gas : 73.6% Distillate Fuel Oil : 26.4%
Waterloo Solar, LLC	AES Distributed Energy	Waterloo, IN	584 MWh	Dec 2011	Jan 2025	Solar
Waterloo Lundquist	MidAmerican Energy Co	Waterloo, IA	255 MWh	Mar 2000	Dec 2025	Distillate Fuel Oil
Electrifarm	MidAmerican Energy Co	Waterloo, IA	17 GWh	Apr 1975	Dec 2025	Natural Gas
Waterloo Solar (IA)	MidAmerican Energy Co	Waterloo, IA	6 GWh	Feb 2022	Dec 2025	Solar
Rock LakeSolar WI, LLC	Wisconsin Electric Power Co	Waterloo, WI	318 MWh	Oct 2025	Dec 2025	Solar
Nesvold Watertown Solar	SoCore Energy LLC	Watertown, MN	9 GWh	Dec 2017	Dec 2025	Solar
Crowned Ridge Wind II Energy Center	Northern States Power Co - Minnesota	Watertown, SD	863 GWh	Nov 2020	Jul 2026	Wind
Crowned Ridge Wind Energy Center	Crowned Ridge Wind, LLC	Watertown, SD	807 GWh	Nov 2019	Jul 2026	Wind
Concord	Wisconsin Electric Power Co	Watertown, WI	203 GWh	Jun 1993	Dec 2025	Natural Gas : 98.9% Distillate Fuel Oil : 1.1%
Deertrack Park Gas Recovery	WM Renewable Energy LLC	Watertown, WI	33 GWh	Jan 2006	Dec 2025	Landfill Gas
Waterville CSG Solar Holdings LLC	Altus Power America Management, LLC	Waterville, MN	8 GWh	Feb 2018	Jul 2026	Solar
Marigold Community Solar Garden, LLC	Geronimo Power	Waterville, MN	2 GWh	Dec 2020	Dec 2025	Solar
USS Water Town Solar LLC CSG	United States Solar Corporation	Waterville, MN	2 GWh	Oct 2021	Dec 2025	Solar
Lyra Community Solar	Lyra Community Solar	Waterville, MN	5 GWh	Jan 2018	Dec 2025	Solar
LeSun CSG, LLC	SunStrong Management, LLC	Waterville, MN	8 GWh	Dec 2017	Dec 2025	Solar
Novel Peter Solar CSG	REA Investments, LLC	Waterville, MN	2 GWh	Aug 2021	Dec 2025	Solar
USS Water City Solar LLC CSG	United States Solar Corporation	Waterville, MN	2 GWh	Sep 2021	Dec 2025	Solar
Watervliet	Energy Developments, Inc d/b/a EDL	Watervliet, MI	26 GWh	Jan 2013	Dec 2025	Landfill Gas
Iroquois Solar 1B LLC CSG	Iroquois Solar 1B LLC	Watseka, IL	4 GWh	Nov 2020	Dec 2025	Solar
Galactic Wind	Galactic Wind	Waunakee, WI	21 GWh	Nov 2012	Dec 2025	Wind
Wausau	Wisconsin Public Service Corp	Wausau, WI	24 GWh	Feb 1921	Dec 2025	Water
Wautoma Solar	Wisconsin Power & Light Co	Wautoma, WI	192 GWh	Nov 2023	Jul 2026	Solar
Waverly Municipal Electric North Plant	Waverly Municipal Elec Utility - (IA)	Waverly, IA	212 MWh	Jul 1958	Dec 2025	Distillate Fuel Oil : 67.7% Natural Gas : 32.3%
South Plant (IA)	Waverly Municipal Elec Utility - (IA)	Waverly, IA	71 MWh	Apr 2000	Dec 2025	Distillate Fuel Oil
Waverly Community Wind Project	Waverly Municipal Elec Utility - (IA)	Waverly, IA	4 GWh	Nov 2001	Dec 2025	Wind
WaveSun Community Solar	Generate Capital	Waverly, MN	8 GWh	Nov 2017	Dec 2025	Solar
Webster City	City of Webster City - (IA)	Webster City, IA	383 MWh	Mar 1972	Dec 2025	Distillate Fuel Oil
Webster Holdco Solar CSG	Webster Holdco LLC	Webster, MN	8 GWh	Jun 2017	Dec 2025	Solar
Schultz CSG	Madison Energy Investments LLC	Webster, MN	3 GWh	Oct 2018	Sep 2025	Solar
USS Centerfield Solar CSG	Standard Solar	Webster, MN	2 GWh	Oct 2019	Dec 2025	Solar
USS Webster Solar CSG	Standard Solar	Webster, MN	2 GWh	Apr 2019	Dec 2025	Solar
Veseli Community Solar Garden	Veseli Solar I LLC	Webster, MN	2 GWh	Jan 2018	Dec 2025	Solar
Viola	OneEnergy, Inc.	Webster, WI	65 MWh	Nov 2025	Dec 2025	Solar
Tinta Wita 5 MW Solar PV System	Tinta Wita Energy LLC	Welch, MN	7 GWh	Apr 2024	Dec 2025	Solar
Prairie Island	Northern States Power Co - Minnesota	Welch, MN	9 TWh	Jan 1974	Jul 2026	Nuclear
Welcome Wind Turbine	Federated Rural Electric Assn	Welcome, MN	3 GWh	Apr 2008	Dec 2025	Wind
Wells IC	City of Wells - (MN)	Wells, MN	437 MWh	Oct 1950	Dec 2025	Natural Gas : 67.1% Distillate Fuel Oil : 32.9%
Ivester Wind Farm	MidAmerican Energy Co	Wellsburg, IA	322 GWh	Nov 2018	Jul 2026	Wind
Wellsburg Wind Project	MidAmerican Energy Co	Wellsburg, IA	305 GWh	Nov 2014	Dec 2025	Wind
C W Tippy	Consumers Energy Co - (MI)	Wellston, MI	56 GWh	Dec 1917	Dec 2025	Water
Sioux	Union Electric Co - (MO)	West Alton, MO	4 TWh	Apr 1967	Jul 2026	Subbituminous Coal : 80.6% Bituminous Coal : 19.3%
LA3 West Baton Rouge Solar Facility	Sol Systems	West Baton Rouge, LA	109 GWh	Aug 2020	Jul 2026	Solar
Regal Ware	Wisconsin Electric Power Co	West Bend, WI	3 GWh	Mar 2021	May 2025	Solar
Washington County	Wisconsin Electric Power Co	West Bend, WI	4 GWh	Dec 2019	Dec 2025	Solar
West Bend	City of West Bend - (IA)	West Bent, IA	68 MWh	Nov 1954	Dec 2025	Distillate Fuel Oil
Kern A Community Solar, LLC CSG	Kern A Community Solar, LLC	West Frankfort, IL	4 GWh	Jun 2021	Dec 2025	Solar
Long Lake Solar, LLC	Long Lake Solar, LLC	West Helena, AR	490 GWh	Mar 2025	Jul 2026	Solar
Purdue CHP	Duke Energy Indiana, LLC	West Lafayette, IN	125 GWh	Feb 2022	Dec 2025	Natural Gas
Purdue University	Purdue University	West Lafayette, IN	129 GWh	Dec 1968	Jul 2026	Natural Gas : 94.3% Bituminous Coal : 5.7%
Tippecanoe Solar Power Plant	Duke Energy Indiana, LLC	West Lafayette, IN	2 GWh	Nov 2019	Dec 2025	Solar
Lake Charles Power	Entergy Louisiana LLC	West Lake, LA	7 TWh	Feb 2020	Jul 2026	Natural Gas
West Liberty	City of West Liberty - (IA)	West Liberty, IA	234 MWh	Sep 1974	Dec 2025	Distillate Fuel Oil
Plant 31 Paper Mill	Graphic Packaging International	West Monroe, LA	515 GWh	Dec 1963	Dec 2025	Natural Gas : 62.4% Black Liquor : 25.3% Wood/Wood Waste Solids : 12.3%
J H Campbell	Consumers Energy Co - (MI)	West Olive, MI	5 TWh	Sep 1962	Jul 2026	Subbituminous Coal : 99.6%
Sugar Creek Power	Northern Indiana Pub Serv Co	West Terre Haute, IN	4 TWh	May 2002	Jul 2026	Natural Gas
McDonald Solar Farm, LLC	Cypress Creek Renewables	West Terre Haute, IN	8 GWh	Nov 2015	Dec 2025	Solar
Westbrook	City of Westbrook - (MN)	Westbrook, MN	10 MWh	Sep 2003	Dec 2025	Distillate Fuel Oil
R S Nelson	Entergy Louisiana LLC	Westlake, LA	2 TWh	Jan 1959	Jul 2026	Subbituminous Coal : 99.7%
Lake Charles Polymers	Equistar Chemicals LP	Westlake, LA	200 GWh	Aug 2011	Jul 2026	Natural Gas
Victory Wind Farm	MidAmerican Energy Co	Westside, IA	384 GWh	Nov 2006	Dec 2025	Wind
Nine Mile Point	Entergy Louisiana LLC	Westwego, LA	8 TWh	Oct 1955	Jul 2026	Natural Gas : 99.3% Distillate Fuel Oil : 0.7%
Wever Solar (150MW)	Interstate Power and Light Co	Wever, IA	288 GWh	Oct 2024	Jul 2026	Solar
Timberline Trail Gas Recovery	WM Renewable Energy LLC	Weyerhaeser, WI	19 GWh	Jan 2006	Dec 2025	Landfill Gas
R M Schahfer	Northern Indiana Pub Serv Co	Wheatfield, IN	773 GWh	Nov 1976	Jul 2026	Bituminous Coal : 97.4% Natural Gas : 2.6%

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#61	Alcoa Power Generating, Inc. - Yadkin Division	433.0 GWh	4
#26	Associated Electric Cooperative, Inc.	22.9 TWh	47
#13	Duke Energy Carolinas	113.4 TWh	578
#50	Duke Energy Progress West	4.6 TWh	15
#23	Louisville Gas and Electric Company and Kentucky Utilities Company	34.2 TWh	25
#1	PJM Interconnection, LLC	890.9 TWh	2,806
#6	Southern Company Services, Inc. - Trans	259.3 TWh	423
#5	Southwest Power Pool	314.5 TWh	876
#53	Southwestern Power Administration	3.5 TWh	37
#9	Tennessee Valley Authority	166.2 TWh	209

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#1	PJM Interconnection, LLC	890.9 TWh	2,806
#2	Midcontinent Independent System Operator, Inc.	677.7 TWh	3,095
#3	Electric Reliability Council of Texas, Inc.	506.3 TWh	1,487
#5	Southwest Power Pool	314.5 TWh	876
#6	Southern Company Services, Inc. - Trans	259.3 TWh	423
#7	California Independent System Operator	168.7 TWh	2,170
#9	Tennessee Valley Authority	166.2 TWh	209
#10	Florida Power & Light Co.	153.0 TWh	188
#12	New York Independent System Operator	134.1 TWh	1,334
#13	Duke Energy Carolinas	113.4 TWh	578