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	Mar 2026
Annual Generation	659.4 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 \| 36.2% Coal \| 28.4% Wind \| 14.7% Nuclear \| 13.9% Solar \| 4.8% Water \| 1.5% 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
Polaris Wind Park	DTE Electric Company	North Star Township, MI	455 GWh	Apr 2020	Dec 2025	Wind
Astoria Station	Otter Tail Power Co	Astoria, SD	455 GWh	Mar 2021	Dec 2025	Natural Gas
Pioneer Trail Wind Farm, LLC	Big Sky Wind, LLC	Paxton, IL	459 GWh	Nov 2011	Dec 2024	Wind
Prairie Rose Wind Farm	Enel Green Power NA, Inc.	Hardwick, MN	460 GWh	Nov 2012	Dec 2025	Wind
Laurel Wind Farm	MidAmerican Energy Co	Laurel, IA	463 GWh	Nov 2011	Dec 2024	Wind
Ford County Wind Farm LLC	Ford Ridge	Ford County, IL	465 GWh	Feb 2022	Dec 2025	Wind
High Prairie Wind Farm	Union Electric Co - (MO)	Queen City, MO	466 GWh	Nov 2020	Dec 2025	Wind
Georgetown	AES Indiana	Indianapolis, IN	466 GWh	May 2000	Dec 2024	Natural Gas
Escanaba Mill	Billerud Escanaba LLC	Escanaba, MI	466 GWh	Dec 1968	Dec 2025	Black Liquor : 45.4% Natural Gas : 30.9% Wood/Wood Waste Solids : 22.9% Residual Fuel Oil : 0.7%
Westrock Hodge (LA)	Westrock (LA)	Hodge, LA	466 GWh	Nov 1952	Dec 2024	Black Liquor : 50.4% Natural Gas : 35.5% Wood/Wood Waste Solids : 14.2%
Wellsburg Wind Project	MidAmerican Energy Co	Wellsburg, IA	469 GWh	Nov 2014	Dec 2024	Wind
Heartland Farms	Consumers Energy Co - (MI)	Middleton, MI	470 GWh	Mar 2024	Dec 2025	Wind
Adams Wind	MidAmerican Energy Co	Lenox, IA	474 GWh	Sep 2015	Dec 2024	Wind
Deerfield Wind Energy, LLC	Deerfield Wind Energy, LLC	Kinde, MI	475 GWh	Jan 2017	Dec 2025	Wind
Tatanka Wind Power LLC	Acciona Wind Energy USA LLC	Ashley, ND	476 GWh	Dec 2007	Dec 2025	Wind
SABIC Innovative Plastics Mt. Vernon	SABIC IP Mt. Vernon, LLC	Mount Vernon, IN	478 GWh	May 1996	Dec 2025	Natural Gas
Walleye Wind	Walleye Wind, LLC	Beaver Creek, MN	479 GWh	Nov 2022	Dec 2025	Wind
Buffalo Ridge II LLC	Avangrid Power LLC	Elkton, SD	479 GWh	Nov 2010	Dec 2025	Wind
Langdon Renewables, LLC	FPL Energy Langdon Wind LLC	Langdon, ND	482 GWh	Nov 2007	Dec 2024	Wind
Maple Flats	Invenergy Services LLC	Louisville, IL	493 GWh	Oct 2024	Dec 2025	Solar
RockGen Energy Center	Dairyland Power Coop	Cambridge, WI	496 GWh	May 2001	Dec 2025	Natural Gas : 99.1% Distillate Fuel Oil : 0.9%
Osage Dam	Union Electric Co - (MO)	Eldon, MO	497 GWh	Sep 1931	Dec 2024	Water
A B Brown	Southern Indiana Gas & Elec Co	Mount Vernon, IN	497 GWh	Feb 1979	Dec 2025	Natural Gas
Richland (IA)	Interstate Power and Light Co	Odebolt, IA	497 GWh	Aug 2020	Dec 2025	Wind
Meridian Wind Park	DTE Electric Company	Merrill, MI	498 GWh	Mar 2023	Dec 2025	Wind
Alpine Power Plant	Wolverine Power Supply Coop	Elmira, MI	499 GWh	May 2016	Dec 2024	Natural Gas
Delta Wind Farm (MS)	AES Clean Energy	Dundee, MS	500 GWh	Mar 2024	Dec 2025	Wind
Dunns Bridge I Solar	Dunns Bridge Solar Center LLC	Wheatfield, IN	508 GWh	May 2023	Dec 2025	Solar
Cardinal Point Wind	Cardinal Point LLC	Sciota, IL	510 GWh	Feb 2020	Dec 2025	Wind
Geismar	BASF Corporation	Geismar, LA	514 GWh	Jun 1985	Dec 2024	Natural Gas : 63.1% Other Gas : 36.9%
Thunder Spirit Wind, LLC	Montana-Dakota Utilities Co	Hettinger, ND	523 GWh	Nov 2015	Dec 2024	Wind
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%
Kossuth	Wisconsin Power & Light Co	Lu Verne, IA	533 GWh	Sep 2020	Dec 2025	Wind
FPL Energy Story Wind LLC	FPL Energy Story Wind LLC	Zearing, IA	538 GWh	Nov 2008	Dec 2025	Wind
Intrepid	MidAmerican Energy Co	Schaller, IA	549 GWh	Nov 2004	Dec 2024	Wind
Georgia-Pacific Monticello Paper	Georgia-Pacific Monticello LLC	Monticello, MS	550 GWh	May 1968	Dec 2024	Black Liquor : 47.2% Natural Gas : 40.2% Wood/Wood Waste Solids : 12.6%
Adair Wind Farm	MidAmerican Energy Co	Adair, IA	555 GWh	Nov 2008	Dec 2024	Wind
Oxbow Solar 1	Lightsource Renewable Energy Asset Management, LLC	New Roads, LA	556 GWh	Jun 2024	Dec 2025	Solar
NAFTA Region Olefins Complex Cogen Fac	BASF Corp	Port Arthur, TX	562 GWh	Jun 2001	Dec 2024	Natural Gas
Carroll Wind Farm	MidAmerican Energy Co	Carroll, IA	563 GWh	Nov 2008	Dec 2024	Wind
English Farms	Interstate Power and Light Co	Montezuma, IA	571 GWh	Feb 2019	Dec 2025	Wind
Century	MidAmerican Energy Co	Blairsburg, IA	572 GWh	Aug 2005	Dec 2024	Wind
Shell Chemical	Shell Chemical LP - Geismar	Geismar, LA	572 GWh	Jul 2002	Dec 2024	Natural Gas
Moraine Sands Wind Power	Moraine Sands Wind Power, LLC	Mason City, IL	574 GWh	Nov 2023	Dec 2025	Wind
Echo Wind Park	DTE Electric Company	Elkton, MI	575 GWh	Dec 2013	Dec 2025	Wind
Sugar Creek Wind One LLC	Sugar Creek Wind One LLC	TBD, IL	582 GWh	Oct 2020	Dec 2025	Wind
Merricourt Wind Energy Center	Otter Tail Power Co	Kulm, ND	584 GWh	Nov 2020	Dec 2025	Wind
Walnut Wind Farm	MidAmerican Energy Co	Walnut, IA	584 GWh	Nov 2008	Dec 2024	Wind
FPL Energy Crystal Lake Wind LLC	FPL Energy Crystal Lake Wind LLC	Britt, IA	585 GWh	Nov 2008	Dec 2025	Wind
Geismar Cogen	Air Liquide Large Industries U S LP	Geismar, LA	586 GWh	Dec 1999	Dec 2024	Natural Gas
Prairie Wind Farm	MidAmerican Energy Co	Montezuma, IA	592 GWh	Dec 2017	Dec 2025	Wind
Indiana Crossroads Wind Farm II	Indiana Crossroads Wind Farm II LLC	Wolcott, IN	593 GWh	Nov 2024	Dec 2025	Wind
Tatanka Ridge	Tatanka Ridge LLC	Toronto, SD	594 GWh	Dec 2020	Dec 2025	Wind
FPL Energy Ashtabula Wind LLC	FPL Energy Ashtabula Wind LLC	Luverne, ND	594 GWh	Nov 2008	Dec 2024	Wind
Ledyard Windpower, LLC	Duke Energy Renewables Services	Lakota, IA	596 GWh	Nov 2022	Dec 2025	Wind
Rush Island	Union Electric Co - (MO)	Festus, MO	603 GWh	Feb 1976	Sep 2024	Subbituminous Coal : 98.2% Distillate Fuel Oil : 1.8%
JCO Oxides Olefins Plant	Indorama Ventures	Port Neeches, TX	614 GWh	Aug 1992	Dec 2024	Natural Gas
Border Winds Wind Farm	Northern States Power Co - Minnesota	Rolla, ND	614 GWh	Jul 2015	Dec 2024	Wind
Foxtail Wind, LLC	Foxtail Wind, LLC	Forbes, ND	623 GWh	Dec 2019	Dec 2025	Wind
Bison 4 Wind Energy Center	ALLETE, Inc.	New Salem, ND	624 GWh	Dec 2014	Dec 2024	Wind
Glacier Sands Wind Power, LLC	Glacier Sands Wind Power, LLC	Mason City, IL	632 GWh	Oct 2021	Dec 2025	Wind
Meadow Lake Wind Farm VI LLC	Meadow Lake Wind Farm VI LLC	Remington, IN	642 GWh	Oct 2018	Dec 2025	Wind
Sheboygan Falls	Wisconsin Power & Light Co	Sheboygan, WI	642 GWh	May 2005	Dec 2024	Natural Gas
Chickasaw Wind Farm	MidAmerican Energy Co	New Hampton, IA	645 GWh	Nov 2023	Dec 2025	Wind
California Ridge Wind Energy LLC	SunEdison LLC	Fithian, IL	653 GWh	Nov 2012	Dec 2025	Wind
ExxonMobil Baton Rouge Turbine Generator	Exxon Mobil Corp	Baton Rouge, LA	654 GWh	Apr 1990	Dec 2024	Natural Gas
Indiana Harbor E 5 AC Station	Northlake Energy	East Chicago, IN	655 GWh	Apr 1996	Dec 2024	Blast Furnace Gas : 92.6% Natural Gas : 7.4%
Harvest Ridge Wind Farm	Harvest Ridge Wind Farm	Newman, IL	667 GWh	Jun 2020	Dec 2025	Wind
Prosperity Wind	Prosperity Wind, LLC	Deland, IL	678 GWh	-	Dec 2025	Wind
R D Green	Big Rivers Electric Corp	Robards, KY	713 GWh	Nov 1979	Dec 2025	Natural Gas
Archer Daniels Midland Clinton	Archer Daniels Midland Co	Clinton, IA	716 GWh	Jan 2009	Dec 2025	Subbituminous Coal : 88.3% Other Biomass Solids : 7.7% Bituminous Coal : 4.0%
Turtle Creek Wind Farm LLC	Turtle Creek Wind Farm LLC	St. Ansgar, IA	720 GWh	Nov 2018	Dec 2025	Wind
Cross Winds Energy Park	Consumers Energy Co - (MI)	Unionville, MI	721 GWh	Nov 2014	Dec 2024	Wind
FPL Energy Crystal Lake Wind II LLC	FPL Energy Crystal Lake Wind II LLC	Britt, IA	722 GWh	Dec 2008	Dec 2025	Wind
Ida Grove II	MidAmerican Energy Co	Ida Grove, IA	727 GWh	Nov 2019	Dec 2025	Wind
Vermillion Energy Facility	Duke Energy Ohio Inc	Cayuga, IN	728 GWh	May 2000	Dec 2024	Natural Gas
Whispering Willow North	Interstate Power and Light Co	Latimer, IA	734 GWh	Dec 2019	Dec 2025	Wind
Golden Plains	Interstate Power and Light Co	Buffalo Center, IA	737 GWh	Feb 2020	Dec 2025	Wind
Alliant Energy Neenah	Wisconsin Power & Light Co	Neenah, WI	740 GWh	Apr 2000	Dec 2024	Natural Gas
Muscatine Plant #1	Board of Water Electric & Communications	Muscatine, IA	748 GWh	Mar 1958	Dec 2025	Subbituminous Coal : 99.7%
Marion	Southern Illinois Power Coop	Marion, IL	767 GWh	May 1963	Dec 2025	Bituminous Coal : 87.8% Natural Gas : 12.1%
Dean	DTE Electric Company	East China, MI	770 GWh	May 2002	Dec 2024	Natural Gas
Pleasant Valley Wind Farm	Northern States Power Co - Minnesota	Dexter, MN	770 GWh	Jul 2015	Dec 2024	Wind
Little Gypsy	Entergy Louisiana LLC	La Place, LA	772 GWh	Feb 1961	Dec 2025	Natural Gas
Odell Wind Farm	Algonquin Power Co	Mountain Lake, MN	773 GWh	Jun 2016	Dec 2024	Wind
Red Pine Wind Project	EDF Renewable Asset Holdings, Inc.	Ivanhoe, MN	774 GWh	Nov 2017	Dec 2025	Wind
Freeborn Wind Farm	Northern States Power Co - Minnesota	Glenville, MN	785 GWh	Apr 2021	Dec 2025	Wind
Crocker Wind Farm	Crocker Wind Farm, LLC	Conde, SD	787 GWh	Oct 2019	Dec 2025	Wind
Dunns Bridge II Solar	Dunns Bridge II Solar and Storage Generation LLC	San Pierre, IN	796 GWh	-	Dec 2025	Solar
Heartland Divide II	Heartland Divide II	Audubon, IA	798 GWh	Feb 2022	Dec 2025	Wind
Plymouth Wind	MidAmerican Energy Co	Remsen, IA	800 GWh	Dec 2021	Dec 2025	Wind
Lundgren Wind Project	MidAmerican Energy Co	Otho, IA	804 GWh	Jul 2014	Dec 2024	Wind
Cannon Falls Energy Center	Invenergy Services LLC	Cannon Falls, MN	809 GWh	Mar 2008	Dec 2025	Natural Gas
Great Pathfinder Wind	Great Pathfinder Wind	Stratford, IA	810 GWh	Jan 2023	Dec 2025	Wind
Crowned Ridge Wind Energy Center	Crowned Ridge Wind, LLC	Watertown, SD	812 GWh	Nov 2019	Dec 2025	Wind
Southern Hills Wind Farm	MidAmerican Energy Co	Creston, IA	814 GWh	Feb 2021	Dec 2025	Wind
Nobles Wind Project	Northern States Power Co - Minnesota	Reading, MN	823 GWh	Nov 2010	Dec 2025	Wind
Glaciers Edge Wind Project	EDF Renewable Asset Holdings, Inc.	Cleghorn, IA	828 GWh	Nov 2019	Dec 2025	Wind
Eclipse Wind Farm	MidAmerican Energy Co	Adair, IA	832 GWh	Aug 2012	Dec 2025	Wind
Isabella Wind Park	DTE Electric Company	Rosebush, MI	854 GWh	May 2021	Dec 2025	Wind

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#60	Alcoa Power Generating, Inc. - Yadkin Division	610.0 GWh	4
#27	Associated Electric Cooperative, Inc.	24.1 TWh	47
#13	Duke Energy Carolinas	112.4 TWh	565
#52	Duke Energy Progress West	4.3 TWh	10
#23	Louisville Gas and Electric Company and Kentucky Utilities Company	34.3 TWh	25
#1	PJM Interconnection, LLC	879.0 TWh	2,465
#6	Southern Company Services, Inc. - Trans	250.9 TWh	417
#5	Southwest Power Pool	300.1 TWh	835
#51	Southwestern Power Administration	4.8 TWh	34
#9	Tennessee Valley Authority	162.4 TWh	204

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#1	PJM Interconnection, LLC	879.0 TWh	2,465
#2	Midcontinent Independent System Operator, Inc.	659.4 TWh	2,831
#3	Electric Reliability Council of Texas, Inc.	484.9 TWh	1,313
#5	Southwest Power Pool	300.1 TWh	835
#6	Southern Company Services, Inc. - Trans	250.9 TWh	417
#7	California Independent System Operator	179.9 TWh	2,075
#9	Tennessee Valley Authority	162.4 TWh	204
#10	Florida Power & Light Co.	150.5 TWh	187
#12	New York Independent System Operator	134.0 TWh	1,211
#13	Duke Energy Carolinas	112.4 TWh	565