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
Wolf Run Solar	Wolf Run Solar LLC	Chapin, IL	309 GWh	Oct 2024	Sep 2025	Solar
Contrail Wind Farm	MidAmerican Energy Co	Bedford, IA	310 GWh	Nov 2020	Sep 2025	Wind
Combined Locks Energy Center	McKinley Paper	Combined Locks, WI	310 GWh	Apr 2002	Dec 2024	Natural Gas
West Memphis Solar Station	Entergy Arkansas LLC	Crawfordsville, AR	315 GWh	Nov 2024	Sep 2025	Solar
Sac County Wind, LLC	Sac County Wind	Sac City, IA	315 GWh	Nov 2021	Sep 2025	Wind
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%
Blue Lake	Northern States Power Co - Minnesota	Shakopee, MN	318 GWh	Feb 1974	Dec 2024	Natural Gas : 99.3% Distillate Fuel Oil : 0.7%
Waterford 1 & 2	Entergy Louisiana LLC	Killona, LA	319 GWh	Jun 1975	Dec 2024	Natural Gas : 99.5% Distillate Fuel Oil : 0.5%
Deerfield Wind Energy 2	Deerfield Wind Energy 2, LLC	Port Hope, MI	319 GWh	Feb 2023	Sep 2025	Wind
Umbriel Solar	Umbriel Solar, LLC	Livington, TX	321 GWh	Sep 2023	Sep 2025	Solar
Big River Solar	Big River Solar, LLC	Norris City, IL	322 GWh	Jul 2022	Sep 2025	Solar
Lakefield Wind Project LLC	EDF Renewable Asset Holdings, Inc.	Lakefield, MN	323 GWh	Sep 2011	Sep 2025	Wind
Michigan Wind 2	Michigan Wind 2, LLC	Minden City, MI	327 GWh	Nov 2011	Dec 2024	Wind
Smithland Hydroelectric Plant	American Mun Power-Ohio, Inc	Smithland, KY	328 GWh	Jun 2017	Sep 2025	Water
Ashtabula Wind II LLC	Ashtabula Wind II LLC	Luverne, ND	328 GWh	Sep 2009	Dec 2024	Wind
Ivester Wind Farm	MidAmerican Energy Co	Wellsburg, IA	329 GWh	Nov 2018	Sep 2025	Wind
Macksburg Wind Project	MidAmerican Energy Co	Macksburg, IA	330 GWh	Nov 2014	Dec 2024	Wind
Rugby Wind Power Project	Avangrid Power LLC	Barton, ND	335 GWh	Nov 2009	Dec 2024	Wind
Calhoun Solar	Invenergy Services LLC	Battle Creek, MI	337 GWh	Nov 2022	Sep 2025	Solar
Boise Cascade International Falls	Boise White Paper LLC	International Falls, MN	338 GWh	Dec 1926	Sep 2025	Black Liquor : 63.8% Natural Gas : 22.3% Wood/Wood Waste Solids : 12.5% Sludge Waste : 1.3%
Wabash Valley Power IGCC	Wabash Valley Power Assn, Inc	Terre Haute, IN	340 GWh	Nov 1953	Sep 2025	Natural Gas
Bishop Hill II Wind Farm	Bishop Hill Energy II, LLC	Cambridge, IL	340 GWh	Sep 2012	Dec 2024	Wind
Fenton Wind Farm	EDF Renewable Asset Holdings, Inc.	Chandler, MN	340 GWh	Aug 2007	Sep 2025	Wind
Blue Sky Green Field Wind Project	Wisconsin Electric Power Co	Fond du Lac, WI	341 GWh	Apr 2008	Sep 2025	Wind
Bent Tree Wind Farm Phase 1	Wisconsin Power & Light Co	Hartland, MN	343 GWh	Jan 2011	Dec 2024	Wind
Mower County Wind Energy Center	Northern States Power Co - Minnesota	Grand Meadow, MN	343 GWh	Nov 2006	Dec 2024	Wind
Henry County	Duke Energy Indiana, LLC	New Castle, IN	345 GWh	Jun 2001	Dec 2024	Natural Gas
Garden Wind LLC	Garden Wind LLC	Zearing, IA	345 GWh	Nov 2009	Sep 2025	Wind
Crescent Wind Park	Consumers Energy Co - (MI)	Hillsdale, MI	350 GWh	Jan 2021	Sep 2025	Wind
Gratiot Farms Wind Project	Consumers Energy Co - (MI)	Carson City, MI	350 GWh	Nov 2020	Sep 2025	Wind
Newport Solar Project	Newport Solar, LLC	Newport, AR	353 GWh	Sep 2023	Sep 2025	Solar
Valley (WI)	Wisconsin Electric Power Co	Milwaukee, WI	353 GWh	May 1968	Sep 2025	Natural Gas
Settlers Trail Wind Farm LLC	Big Sky Wind, LLC	Sheldon, IL	354 GWh	Sep 2011	Dec 2024	Wind
Benton County Wind Farm	Orion Energy Group LLC	Earl Park, IN	358 GWh	Apr 2008	Dec 2024	Wind
Huck Finn Renewable Energy Center	Union Electric Co - (MO)	Vandalia, MO	358 GWh	Nov 2024	Sep 2025	Solar
Whiting Refinery	BP PLC	Whiting, IN	360 GWh	Dec 1947	Dec 2024	Other Gas : 81.0% Natural Gas : 19.0%
Barton Windpower LLC	Avangrid Power LLC	Kensett, IA	361 GWh	May 2009	Dec 2024	Wind
Hardy Hills Solar Energy LLC	Hardy Hills Solar LLC	Frankfort, IN	362 GWh	Feb 2024	Sep 2025	Solar
Pine River Wind Park	DTE Electric Company	Shepherd, MI	363 GWh	Feb 2019	Sep 2025	Wind
Stoneray Power Partners, LLC	EDF Renewable Asset Holdings, Inc.	Woodstock, MN	366 GWh	Jan 2019	Sep 2025	Wind
Tuscola Bay Wind	Tuscola Bay Wind LLC	Reese, MI	367 GWh	Nov 2012	Sep 2025	Wind
Northern Wind	Northern States Power Co - Minnesota	Lake Wilson, MN	369 GWh	Dec 2022	Sep 2025	Wind
International Paper Red River Mill	Red River Mill Intl Paper Company	Campti, LA	371 GWh	Nov 2008	Dec 2023	Black Liquor : 64.7% Wood/Wood Waste Solids : 22.1% Natural Gas : 13.2%
Hoopeston Wind LLC	Hoopeston Wind LLC	Rossville, IL	371 GWh	Feb 2015	Dec 2024	Wind
Cavalry Solar Hybrid	Cavalry Energy Center LLC	Monon, IN	372 GWh	Apr 2024	Sep 2025	Solar
Glacier Hills	Wisconsin Electric Power Co	Cambria, WI	375 GWh	Nov 2011	Sep 2025	Wind
Grant County	Wisconsin Power & Light Co	Town of Potosi, WI	375 GWh	Apr 2024	Sep 2025	Solar
F.D. Kuester Generating Station	Upper Michigan Energy Resources Company	Negaunee, MI	375 GWh	Feb 2019	Dec 2024	Natural Gas
Indiana Crossroads Solar Park	Meadow Lake Solar Park	Reynolds, IN	376 GWh	May 2023	Sep 2025	Solar
White Oak Energy LLC	White Oak Energy LLC	Carlock, IL	376 GWh	May 2011	Dec 2024	Wind
Victory Wind Farm	MidAmerican Energy Co	Westside, IA	378 GWh	Nov 2006	Dec 2024	Wind
Trimont Area Wind Farm	Avangrid Power LLC	Trimont, MN	379 GWh	Oct 2005	Dec 2024	Wind
Grand Meadow	Northern States Power Co - Minnesota	Dexter, MN	380 GWh	Nov 2008	Dec 2024	Wind
Oliver Wind III, LLC	Oliver Wind III, LLC	Mandan, ND	381 GWh	Dec 2016	Sep 2025	Wind
Baldwin Wind LLC	Baldwin Wind LLC	Wilton, ND	381 GWh	Nov 2010	Dec 2024	Wind
Pocahontas Prairie Wind Farm	MidAmerican Energy Co	Pomeroy, IA	382 GWh	Jan 2012	Dec 2024	Wind
Prairie Wolf Solar LLC	National Grid Renewables	Ashmore Township, IL	383 GWh	Oct 2021	Sep 2025	Solar
New Frontier Wind	Meadowlark Wind I LLC	Ruso, ND	384 GWh	Nov 2018	Sep 2025	Wind
Prosperity Wind	Prosperity Wind, LLC	Deland, IL	384 GWh	-	Sep 2025	Wind
SABIC Innovative Plastics Mt. Vernon	SABIC IP Mt. Vernon, LLC	Mount Vernon, IN	386 GWh	May 1996	Sep 2025	Natural Gas
Driver Solar	Entergy Arkansas LLC	Osceola, AR	387 GWh	Oct 2024	Sep 2025	Solar
Quilt Block Wind Farm LLC	Quilt Block Wind Farm LLC	Darlington, WI	387 GWh	Aug 2017	Sep 2025	Wind
Pegasus Wind	Pegasus Wind, LLC	Reese, MI	392 GWh	Nov 2019	Sep 2025	Wind
Sherco Solar I	Northern States Power Co - Minnesota	Clear Lake, MN	393 GWh	Sep 2024	Sep 2025	Solar
Washington Parish Energy Center	Entergy Louisiana LLC	Bogalusa, LA	394 GWh	Oct 2020	Sep 2025	Natural Gas
A B Brown	Southern Indiana Gas & Elec Co	Mount Vernon, IN	395 GWh	Feb 1979	Sep 2025	Natural Gas : 99.9%
Crooked Lake Solar, LLC	Crooked Lake Solar, LLC	Blytheville, AR	396 GWh	Apr 2024	Sep 2025	Solar
Vienna Wind Farm	MidAmerican Energy Co	Marshalltown, IA	398 GWh	Oct 2012	Dec 2024	Wind
Dam 2	Arkansas Electric Coop Corp	Dumas, AR	401 GWh	May 1999	Dec 2024	Water
Formosa Plastics	Formosa Plastics Corp	Baton Rouge, LA	402 GWh	Apr 1985	Dec 2024	Natural Gas
DeRidder Mill	Packaging Corporation of America	DeRidder, LA	402 GWh	Sep 1969	Dec 2024	Black Liquor : 46.7% Wood/Wood Waste Solids : 34.3% Natural Gas : 18.9%
Primient	Primary Products Ingredients Americas, LLC d/b/a Primient	Lafayette, IN	406 GWh	May 2021	Dec 2024	Natural Gas
Morning Light Wind Farm	MidAmerican Energy Co	Adair, IA	413 GWh	Sep 2012	Dec 2024	Wind
Prairie Rose Wind Farm	Enel Green Power NA, Inc.	Hardwick, MN	414 GWh	Nov 2012	Sep 2025	Wind
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%
Cannelton Hydroelectric Plant	American Mun Power-Ohio, Inc	Hawesville, KY	416 GWh	Dec 2015	Dec 2024	Water
Oak Ridge Solar	AES Clean Energy	Oak Ridge, LA	422 GWh	Nov 2023	Sep 2025	Solar
Heartland Divide Wind Project, LLC	Heartland Divide Wind Project, LLC	Melville, IA	424 GWh	Nov 2018	Sep 2025	Wind
Whispering Willow Wind Farm - East	Interstate Power and Light Co	Iowa Falls, IA	425 GWh	Nov 2009	Dec 2024	Wind
Glen Ullin Energy Center	ALLETE Clean Energy	Glen Ullin, ND	427 GWh	Nov 2019	Sep 2025	Wind
Pearl River Solar Park LLC	Pearl River Solar Park, LLC	Morton, MS	427 GWh	Jun 2024	Sep 2025	Solar
Silver Creek	Cooperative Energy	Prentiss, MS	428 GWh	May 2003	Dec 2024	Natural Gas
Big Cypress Solar, LLC	Big Cypress Solar, LLC	Crawfordsville, AR	429 GWh	Nov 2023	Sep 2025	Solar
Maple Flats	Invenergy Services LLC	Louisville, IL	431 GWh	Oct 2024	Sep 2025	Solar
Bishop Hill III	Invenergy Services LLC	Cambridge, IL	432 GWh	May 2018	Sep 2025	Wind
Buffalo Ridge Wind	Buffalo Ridge Wind, LLC	Lake Benton, MN	432 GWh	Nov 2022	Sep 2025	Wind
Gerald Andrus	Entergy Mississippi LLC	Greenville, MS	435 GWh	Dec 1974	Aug 2024	Natural Gas : 99.9%
Lansing BWL REO Town Plant	Lansing Board of Water and Light	Lansing, MI	437 GWh	Jun 2013	Dec 2024	Natural Gas
Granite City Works	United States Steel Granite City Works	Granite City, IL	438 GWh	May 2010	Sep 2025	Natural Gas : 50.8% Purchased Steam : 49.2%
Lake Benton II	Northern States Power Co - Minnesota	Ruthton, MN	438 GWh	May 1999	Dec 2024	Wind
Heat Recovery Coke Facility	Cokenergy Inc	East Chicago, IN	438 GWh	Mar 1998	Sep 2025	Waste Heat
Gaylord Container Bogalusa	Temple-Inland Corp	Bogalusa, LA	439 GWh	May 1979	Sep 2025	Black Liquor : 55.5% Wood/Wood Waste Solids : 37.5% Natural Gas : 7.0%
Sappi Cloquet Mill	Sappi Cloquet LLC	Cloquet, MN	448 GWh	Dec 1928	Sep 2025	Black Liquor : 64.5% Wood/Wood Waste Solids : 17.7% Natural Gas : 13.6% Water : 3.5%
Polaris Wind Park	DTE Electric Company	North Star Township, MI	452 GWh	Apr 2020	Sep 2025	Wind
Buffalo Ridge II LLC	Avangrid Power LLC	Elkton, SD	454 GWh	Nov 2010	Sep 2025	Wind
Pioneer Trail Wind Farm, LLC	Big Sky Wind, LLC	Paxton, IL	459 GWh	Nov 2011	Dec 2024	Wind
Astoria Station	Otter Tail Power Co	Astoria, SD	459 GWh	Mar 2021	Sep 2025	Natural Gas
Laurel Wind Farm	MidAmerican Energy Co	Laurel, IA	463 GWh	Nov 2011	Dec 2024	Wind
Tatanka Wind Power LLC	Acciona Wind Energy USA LLC	Ashley, ND	465 GWh	Dec 2007	Sep 2025	Wind
Georgetown	AES Indiana	Indianapolis, IN	466 GWh	May 2000	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