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
Pomeroy Wind Farm	MidAmerican Energy Co	Fonda, IA	972 GWh	Nov 2007	Sep 2025	Wind
South Fond Du Lac	Wisconsin Power & Light Co	Fond du Lac, WI	5 GWh	Apr 1993	Dec 2024	Natural Gas : 98.0% Distillate Fuel Oil : 2.0%
Blue Sky Green Field Wind Project	Wisconsin Electric Power Co	Fond du Lac, WI	341 GWh	Apr 2008	Sep 2025	Wind
Fond du Lac Community Solar	SoCore Energy LLC	Fond Du Lac, WI	2 GWh	Nov 2021	Dec 2024	Solar
Ledgeview	Greenbacker Renewable Energy Corporation	Fond du Lac, WI	2 GWh	Jul 2024	Dec 2024	Solar
ENGIE 2020 ProjectCo-WI1 LLC	ENGIE 2020 ProjectCo-WI1 LLC	Fond Du Lac, WI	2 GWh	Nov 2021	Dec 2024	Solar
Novel Novak Solar LLC CSG	REA Investments, LLC	Foley, MN	1 GWh	Jul 2021	Dec 2024	Solar
Stevens Community Solar LLC	Madison Energy Holdings LLC	Foley, MN	2 GWh	Sep 2020	Dec 2024	Solar
USS Foley Solar LLC	United States Solar Corporation	Foley, MN	2 GWh	Jun 2022	Dec 2024	Solar
Svihel Community Solar LLC CSG	Svihel Community Solar LLC	Foley, MN	2 GWh	Mar 2021	Dec 2024	Solar
Caelum Community Solar	Caelum Community Solar	Foley, MN	3 GWh	Sep 2017	Dec 2024	Solar
Twin Falls (WI)	Wisconsin Electric Power Co	Florence, WI	31 GWh	Jun 2016	Dec 2024	Water
Brule	Wisconsin Electric Power Co	Florence, WI	16 GWh	Dec 1918	Dec 2024	Water
Pine	Wisconsin Electric Power Co	Florence, WI	10 GWh	May 1922	Dec 2024	Water
Markland	Duke Energy Indiana, LLC	Florence, IN	299 GWh	Dec 1966	Dec 2024	Water
IMEA Flora	Illinois Municipal Elec Agency	Flora, IL	48 MWh	Nov 2000	Dec 2024	Distillate Fuel Oil
Flora Site A	City of Flora - (IL)	Flora, IL	37 MWh	Nov 2001	Dec 2024	Distillate Fuel Oil
Flora Site B	City of Flora - (IL)	Flora, IL	32 MWh	Nov 2001	Dec 2024	Distillate Fuel Oil
Genesee Power Station LP	NorthStar Clean Energy	Flint, MI	96 GWh	Nov 1995	Dec 2024	Wood/Wood Waste Solids : 99.9%
Coldwater Solar, LLC	Coldwater Solar, LLC	Flint, MI	4 GWh	Nov 2020	Dec 2024	Solar
Blue Elk VII Solar, LLC	Blue Elk VII Solar, LLC	Flint, MI	22 GWh	Oct 2023	Dec 2024	Solar
California Ridge Wind Energy LLC	SunEdison LLC	Fithian, IL	669 GWh	Nov 2012	Sep 2025	Wind
O'Brien Solar Fields	Madison Gas & Electric Co	Fitchburg, WI	38 GWh	Apr 2021	Dec 2024	Solar
Tyto Solar	Madison Gas & Electric Co	Fitchburg, WI	11 GWh	Jan 2024	Dec 2024	Solar
TES Filer City Station	TES Filer City Station LP	Filer City, MI	316 GWh	Apr 1990	Sep 2025	Bituminous Coal : 64.6% Natural Gas : 21.3% Wood/Wood Waste Solids : 14.1%
PCA, Filer City Mill	PCA, Filer City Mill	Filer City, MI	91 GWh	Dec 1949	Sep 2025	Natural Gas
Rush Island	Union Electric Co - (MO)	Festus, MO	603 GWh	Feb 1976	Sep 2024	Subbituminous Coal : 98.2% Distillate Fuel Oil : 1.8%
Hoot Lake	Otter Tail Power Co	Fergus Falls, MN	3 GWh	Aug 1914	Dec 2024	Water
Hoot Lake Solar	Otter Tail Power Co	Fergus Falls, MN	73 GWh	Jul 2023	Sep 2025	Solar
Fennimore	City of Fennimore - (WI)	Fennimore, WI	27 MWh	Jan 1952	Dec 2024	Distillate Fuel Oil
Fennimore Solar	Butter Solar, LLC	Fennimore, WI	4 GWh	Aug 2019	Dec 2024	Solar
USS Horne North Solar LLC CSG	Standard Solar	Felton, MN	2 GWh	Sep 2020	Dec 2024	Solar
USS Horne South Solar LLC CSG	Standard Solar	Felton, MN	2 GWh	Sep 2020	Dec 2024	Solar
USS JJ Clay Solar LLC CSG	Standard Solar	Felton, MN	2 GWh	Sep 2020	Dec 2024	Solar
Bullhead Solar, LLC	Bullhead Solar, LLC	Fayette, MI	4 GWh	Dec 2020	Dec 2024	Solar
Overall Road Station	City of Farmington - (MO)	Farmington, MO	26 MWh	Feb 2003	Dec 2024	Distillate Fuel Oil
Walton Street Substation	City of Farmington - (MO)	Farmington, MO	6 MWh	Dec 2002	Dec 2024	Distillate Fuel Oil
Elm Street Substation Generators	City of Farmington - (MO)	Farmington, MO	22 MWh	Sep 2002	Dec 2024	Distillate Fuel Oil
SunE Feely 1 CSG, LLC	Ecoplexus, Inc	Farmington, MN	8 GWh	Aug 2018	Dec 2024	Solar
MSC-Empire01, LLC	MSC-Empire01, LLC	Farmington, MN	2 GWh	Jul 2019	Dec 2024	Solar
Farmington Holdco Solar	Farmington Holdco LLC	Farmington, MN	8 GWh	Jan 2017	Dec 2024	Solar
Empire Solar	Cypress Creek Renewables	Farmington, MN	6 GWh	Nov 2016	Dec 2024	Solar
Dakota Community Solar One LLC CSG	Madison Energy Holdings LLC	Farmington, MN	2 GWh	Nov 2019	Dec 2024	Solar
FastSun 19 CSG	Altus Power America Management, LLC	Farmington, MN	2 GWh	May 2020	Dec 2024	Solar
Ursa Community Solar	Ursa Community Solar	Farmington, MN	8 GWh	Dec 2016	Dec 2024	Solar
Vermillion River_MN_GRE DEA-GM	SoCore Energy LLC	Farmington, MN	5 GWh	Nov 2019	Dec 2024	Solar
Illinois PV Fulton 1 CSG	Illinois PV Fulton 1, LLC	Farmington, IL	4 GWh	May 2020	Dec 2024	Solar
Sapphire Sky Wind Energy LLC	Invenergy Services LLC	Farmer City, IL	937 GWh	Nov 2021	Sep 2025	Wind
Farmer City	City of Farmer City - (IL)	Farmer City, IL	50 MWh	Mar 1951	Dec 2024	Distillate Fuel Oil
Faribault Energy Park	Minnesota Municipal Power Agny	Faribault, MN	1 TWh	Apr 2005	Dec 2024	Natural Gas
Marion Garden	Excelsior Energy Capital	Faribault, MN	2 GWh	Oct 2020	Dec 2024	Solar
USS Fair Park Solar LLC (CSG)	United States Solar Corporation	Faribault, MN	2 GWh	Nov 2023	Dec 2024	Solar
West Faribault Solar	Enel Green Power NA, Inc.	Faribault, MN	10 GWh	Nov 2016	Dec 2024	Solar
Falls Creek Garden	Falls Creek Garden LLC	Faribault, MN	2 GWh	Jan 2020	Dec 2024	Solar
Roberds Garden CSG	Roberds Garden LLC	Faribault, MN	2 GWh	Aug 2019	Dec 2024	Solar
Walcott Solar CSG	Altus Power America Management, LLC	Faribault, MN	9 GWh	Jun 2020	Dec 2024	Solar
Cannon Garden Solar	Cannon Garden LLC	Faribault, MN	2 GWh	Dec 2019	Dec 2024	Solar
Straight Garden Solar	Straight Garden LLC	Faribault, MN	2 GWh	Feb 2020	Dec 2024	Solar
Fairmont Wind	Southern Minnesota Mun P Agny	Fairmont, MN	15 GWh	Feb 2003	Dec 2024	Wind
Fairmont (MN)	Southern Minnesota Mun P Agny	Fairmont, MN	6 GWh	Dec 1974	Dec 2024	Natural Gas : 97.6% Distillate Fuel Oil : 2.4%
Fairfax	City of Fairfax - (MN)	Fairfax, MN	2 MWh	Jul 2001	Dec 2024	Distillate Fuel Oil
Fairbanks Solar Project	Fairbanks Solar Energy Center LLC	Fairbanks, IN	277 GWh	-	Sep 2025	Solar
Herrema Dairy	Herrema Dairy, LLC	Fair Oaks, IN	7 GWh	Mar 2022	Dec 2024	Natural Gas
Bos Dairy, LLC	Bos Dairy, LLC	Fair Oaks, IN	6 GWh	Dec 2004	Dec 2024	Natural Gas
Oak Hill Solar Array	Southern Indiana Gas & Elec Co	Evansville, IN	3 GWh	Oct 2018	Dec 2024	Solar
Volkman Road Solar Array Hybrid	Southern Indiana Gas & Elec Co	Evansville, IN	4 GWh	Oct 2018	Dec 2024	Solar
WestRock (TX)	WestRock (TX)	Evadale, TX	415 GWh	May 1954	Dec 2024	Black Liquor : 58.9% Wood/Wood Waste Solids : 22.0% Natural Gas : 19.1%
Acadia Energy Center	Cleco Power LLC	Eunice, LA	6 TWh	Jun 2002	Sep 2025	Natural Gas
Iowa Lakes Community College Wind Farm	Iowa Lakes Community College	Estherville, IA	2 GWh	Jan 2005	Sep 2025	Wind
Dan E Karn	Consumers Energy Co - (MI)	Essexville, MI	91 GWh	Oct 1959	Sep 2025	Natural Gas : 93.0% Residual Fuel Oil : 7.0%
Escanaba Mill	Billerud Escanaba LLC	Escanaba, MI	475 GWh	Dec 1968	Sep 2025	Black Liquor : 44.9% Natural Gas : 31.2% Wood/Wood Waste Solids : 23.2% Residual Fuel Oil : 0.7%
Temperance Solar, LLC	National Grid Renewables	Erie, MI	40 GWh	Nov 2020	Dec 2024	Solar
Palo Alto Wind Farm	MidAmerican Energy Co	Emmetsburg, IA	1 TWh	Dec 2019	Sep 2025	Wind
Poet Bioprocessing Emmetsburg	Poet Bioprocessing Emmetsburg	Emmetsburg, IA	18 GWh	Nov 2023	Dec 2024	Natural Gas : 83.1% Other Biomass Solids : 16.9%
Elroy	City of Elroy - (WI)	Elroy, WI	2 MWh	Apr 1973	Dec 2024	Distillate Fuel Oil
Alpine Power Plant	Wolverine Power Supply Coop	Elmira, MI	499 GWh	May 2016	Dec 2024	Natural Gas
Ellettsville Solar RES	Hoosier Energy R E C, Inc	Ellettsville, IN	1 GWh	Sep 2016	Dec 2024	Solar
Buffalo Ridge I LLC	Avangrid Power LLC	Elkton, SD	100 GWh	Mar 2009	Sep 2025	Wind
Buffalo Ridge II LLC	Avangrid Power LLC	Elkton, SD	454 GWh	Nov 2010	Sep 2025	Wind
Echo Wind Park	DTE Electric Company	Elkton, MI	583 GWh	Dec 2013	Sep 2025	Wind
Harvest 2	Harvest II Windfarm, LLC	Elkton, MI	202 GWh	Oct 2012	Dec 2024	Wind
Harvest	Harvest Windfarm, LLC	Elkton, MI	116 GWh	Dec 2007	Dec 2024	Wind
LaFayette Solar WI, LLC	Wisconsin Electric Power Co	Elkhorn, WI	15 MWh	Nov 2024	Dec 2024	Solar
Elk River	Great River Energy	Elk River, MN	73 GWh	Dec 1950	Sep 2025	Natural Gas : 99.1% Distillate Fuel Oil : 0.9%
Elk River City of	City of Elk River	Elk River, MN	32 MWh	Feb 1948	Dec 2023	Distillate Fuel Oil
Elk Mound	Dairyland Power Coop	Elk Mound, WI	25 GWh	May 2001	Dec 2024	Natural Gas : 99.5% Distillate Fuel Oil : 0.5%
Eldorado Solar I	Sol Systems	Eldorado, IL	257 GWh	-	Sep 2025	Solar
Osage Dam	Union Electric Co - (MO)	Eldon, MO	497 GWh	Sep 1931	Dec 2024	Water
Union Power Station	Entergy Arkansas LLC	El Dorado, AR	9 TWh	Dec 2002	Sep 2025	Natural Gas
El Dorado AR	Entegrity Solar El Dorado SD, LLC	El Dorado, AR	2 GWh	Jan 2024	Dec 2024	Solar
Edwardsville Solar II	Edwardsville Solar II, LLC	Edwardsville, IL	4 GWh	Jun 2021	Dec 2024	Solar
Edwardsport	Duke Energy Indiana, LLC	Edwardsport, IN	4 TWh	May 2013	Sep 2025	Natural Gas : 52.4% Coal-Derived Synthesis Gas : 40.0% Bituminous Coal : 7.5%
Camp Atterbury Microgrid Hybrid	Duke Energy Indiana, LLC	Edinburgh, IN	3 GWh	Oct 2019	Dec 2024	Solar
North Rock	Wisconsin Power & Light Co	Edgerton, WI	100 GWh	Sep 2022	Sep 2025	Solar
Johnson Solar CSG	National Grid Renewables	Edgerton, MN	9 GWh	Dec 2017	Dec 2024	Solar
Antlia Community Solar	Antlia Community Solar	Edgerton, MN	3 GWh	Aug 2017	Dec 2024	Solar
Hilltop Power	Hilltop Power, LLC	Edgerton, MN	4 GWh	Nov 2008	Dec 2024	Wind
FPL Energy North Dakota Wind I/II	FPL Energy North Dakota Wind LLC	Edgeley, ND	137 GWh	Sep 2003	Dec 2024	Wind
Cedar Ridge	Wisconsin Power & Light Co	Eden, WI	175 GWh	Nov 2008	Dec 2024	Wind
SolarClub 30 (CSG)	Nautilus Solar Solutions	Eden Valley, MN	2 GWh	Dec 2023	Dec 2024	Solar

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