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
Grand Meadow	Northern States Power Co - Minnesota	Dexter, MN	379 GWh	Nov 2008	Dec 2025	Wind
Sherco Solar II	Northern States Power Co - Minnesota	Becker, MN	378 GWh	Aug 2025	Jul 2026	Solar
Prairie Wolf Solar LLC	Geronimo Power	North Ashmore, IL	378 GWh	Oct 2021	Jul 2026	Solar
Pegasus Wind	Pegasus Wind, LLC	Reese, MI	376 GWh	Nov 2019	Jul 2026	Wind
Emily Solar, LLC	RWE Clean Energy	Casey, IL	376 GWh	Nov 2025	Jul 2026	Solar
Driver Solar	Entergy Arkansas LLC	Osceola, AR	374 GWh	Oct 2024	Jul 2026	Solar
Pocahontas Prairie Wind Farm	MidAmerican Energy Co	Pomeroy, IA	374 GWh	Jan 2012	Dec 2025	Wind
Quilt Block Wind Farm LLC	Quilt Block Wind Farm LLC	Darlington, WI	369 GWh	Aug 2017	Jul 2026	Wind
F.D. Kuester Generating Station	Upper Michigan Energy Resources Company	Negaunee, MI	368 GWh	Feb 2019	Dec 2025	Natural Gas
Calhoun Solar	Invenergy Services LLC	Battle Creek, MI	367 GWh	Nov 2022	Jul 2026	Solar
Cavalry Solar Hybrid	Cavalry Energy Center LLC	Monon, IN	367 GWh	Apr 2024	Jul 2026	Solar
Barton Windpower LLC	Avangrid Power LLC	Kensett, IA	365 GWh	May 2009	Dec 2025	Wind
Darien Solar	Wisconsin Electric Power Co	Darien, WI	365 GWh	Feb 2025	Jul 2026	Solar
Ashtabula Wind II LLC	Ashtabula Wind II LLC	Luverne, ND	364 GWh	Sep 2009	Dec 2025	Wind
Crescent Wind Park	Consumers Energy Co - (MI)	Hillsdale, MI	364 GWh	Jan 2021	Jul 2026	Wind
Combined Locks Energy Center	McKinley Paper	Combined Locks, WI	364 GWh	Apr 2002	Oct 2025	Natural Gas
Flint Hills Resources Pine Bend, LLC	Flint Hills Resources Pine Bend, LLC	Rosemount, MN	362 GWh	Apr 2019	Dec 2025	Natural Gas : 78.8% Solar : 21.2%
Stoneray Power Partners, LLC	EDF Renewable Asset Holdings, Inc.	Woodstock, MN	358 GWh	Jan 2019	Jul 2026	Wind
Hardy Hills Solar Energy LLC	Hardy Hills Solar LLC	Frankfort, IN	357 GWh	Feb 2024	Jul 2026	Solar
Tuscola Bay Wind	Tuscola Bay Wind LLC	Reese, MI	355 GWh	Nov 2012	Jul 2026	Wind
Newport Solar Project	Newport Solar, LLC	Newport, AR	352 GWh	Sep 2023	Jul 2026	Solar
New Madrid Solar, LLC	New Madrid Solar, LLC	Marston, MO	351 GWh	Oct 2025	Jul 2026	Solar
Trimont Area Wind Farm	Avangrid Power LLC	Trimont, MN	350 GWh	Oct 2005	Dec 2025	Wind
Rugby Wind Power Project	Avangrid Power LLC	Barton, ND	348 GWh	Nov 2009	Dec 2025	Wind
Benton County Wind Farm	Orion Energy Group LLC	Earl Park, IN	343 GWh	Apr 2008	Dec 2025	Wind
Northern Wind	Northern States Power Co - Minnesota	Lake Wilson, MN	341 GWh	Dec 2022	Jul 2026	Wind
Contrail Wind Farm	MidAmerican Energy Co	Bedford, IA	340 GWh	Nov 2020	Jul 2026	Wind
Waterford 1 & 2	Entergy Louisiana LLC	Killona, LA	339 GWh	Jun 1975	Dec 2025	Natural Gas : 98.8% Distillate Fuel Oil : 1.2%
Kentucky Mills	Domtar Paper Company LLC	Hawesville, KY	338 GWh	May 2001	Dec 2025	Black Liquor : 75.4% Wood/Wood Waste Solids : 23.7% Natural Gas : 0.8%
Hoopeston Wind LLC	Hoopeston Wind LLC	Rossville, IL	338 GWh	Feb 2015	Dec 2025	Wind
Boise Cascade International Falls	Boise White Paper LLC	International Falls, MN	338 GWh	Dec 1926	Jul 2026	Black Liquor : 63.6% Natural Gas : 22.5% Wood/Wood Waste Solids : 12.6% Sludge Waste : 1.3%
MinnDakota Wind LLC	Avangrid Power LLC	Ivanhoe, MN	337 GWh	Dec 2007	Dec 2025	Wind
Lake Catherine	Entergy Arkansas LLC	Jones Mill, AR	336 GWh	Mar 1970	Dec 2025	Natural Gas
Bishop Hill II Wind Farm	Bishop Hill Energy II, LLC	Cambridge, IL	334 GWh	Sep 2012	Dec 2025	Wind
Bent Tree Wind Farm Phase 1	Wisconsin Power & Light Co	Hartland, MN	334 GWh	Jan 2011	Dec 2025	Wind
Mower County Wind Energy Center	Northern States Power Co - Minnesota	Grand Meadow, MN	334 GWh	Nov 2006	Dec 2025	Wind
Twin Lakes Solar LLC	Twin Lakes Solar LLC	Monticello, IN	334 GWh	Nov 2024	Jul 2026	Solar
Gratiot Farms Wind Project	Consumers Energy Co - (MI)	Carson City, MI	332 GWh	Nov 2020	Jul 2026	Wind
Glacier Hills	Wisconsin Electric Power Co	Cambria, WI	331 GWh	Nov 2011	Jul 2026	Wind
Michigan Wind 2	Michigan Wind 2, LLC	Minden City, MI	329 GWh	Nov 2011	Dec 2025	Wind
Whiting Refinery	BP PLC	Whiting, IN	328 GWh	Dec 1947	Dec 2025	Other Gas : 87.1% Natural Gas : 12.9%
Valley (WI)	Wisconsin Electric Power Co	Milwaukee, WI	327 GWh	May 1968	Jul 2026	Natural Gas
Blue Bird Solar, LLC	Blue Bird Solar, LLC	Warrenton, MO	327 GWh	Nov 2024	Jul 2026	Solar
Sac County Wind, LLC	Sac County Wind	Sac City, IA	323 GWh	Nov 2021	Jul 2026	Wind
Garden Wind LLC	Garden Wind LLC	Zearing, IA	322 GWh	Nov 2009	Jul 2026	Wind
TES Filer City Station	TES Filer City Station LP	Filer City, MI	322 GWh	Apr 1990	Jul 2026	Bituminous Coal : 67.5% Natural Gas : 20.1% Wood/Wood Waste Solids : 12.4%
Forgeview Solar	Forgeview Solar, LLC	Blytheville, AR	322 GWh	Nov 2025	Jul 2026	Solar
Ivester Wind Farm	MidAmerican Energy Co	Wellsburg, IA	322 GWh	Nov 2018	Jul 2026	Wind
Rosewater Wind Farm	Rosewater Wind Farm LLC	Chalmers, IN	321 GWh	Nov 2020	Jul 2026	Wind
Settlers Trail Wind Farm LLC	RWE Clean Energy	Sheldon, IL	320 GWh	Sep 2011	Dec 2025	Wind
Billerud Quinnesec Mill	Billerud Quinnesec Mill	Norway, MI	318 GWh	Sep 1985	Dec 2025	Black Liquor : 64.2% Wood/Wood Waste Solids : 32.7% Natural Gas : 3.1%
Umbriel Solar	Umbriel Solar, LLC	Livington, TX	317 GWh	Sep 2023	Jul 2026	Solar
Unbridled Solar	Geronimo Power	Robards, KY	317 GWh	Feb 2025	Jul 2026	Solar
Blue Sky Green Field Wind Project	Wisconsin Electric Power Co	Fond du Lac, WI	317 GWh	Apr 2008	Jul 2026	Wind
Eldorado Solar I	Sol Systems	Eldorado, IL	317 GWh	Dec 2024	Jul 2026	Solar
Big River Solar	Big River Solar, LLC	Norris City, IL	316 GWh	Jul 2022	Jul 2026	Solar
Wolf Run Solar	Wolf Run Solar LLC	Chapin, IL	309 GWh	Oct 2024	Jul 2026	Solar
Black Oak Wind Farm	Black Oak Wind, LLC	Sauk Centre, MN	309 GWh	Nov 2016	Jul 2026	Wind
Bennington Wind	Minonk Stewardship Wind LLC	Minonk, IL	308 GWh	Sep 2021	Jul 2026	Wind
Cass County Renewable Energy Center	Union Electric Co - (MO)	Beardstown, IL	308 GWh	Nov 2024	Jul 2026	Solar
Georgetown	AES Indiana	Indianapolis, IN	307 GWh	May 2000	Dec 2025	Natural Gas
West Campus Cogeneration Facility	Madison Gas & Electric Co	Madison, WI	305 GWh	Mar 2005	Dec 2025	Natural Gas
Wellsburg Wind Project	MidAmerican Energy Co	Wellsburg, IA	305 GWh	Nov 2014	Dec 2025	Wind
Prairie Star Wind Farm	High Prairie Wind Farm II LLC	Grand Meadow, MN	303 GWh	Nov 2007	Dec 2025	Wind
West Memphis Solar Station	Entergy Arkansas LLC	Crawfordsville, AR	303 GWh	Nov 2024	Jul 2026	Solar
Boomtown Renewable Energy Center	Union Electric Co - (MO)	Carmi, IL	295 GWh	Nov 2024	Jul 2026	Solar
Paris Solar	Wisconsin Electric Power Co	Union Grove, WI	294 GWh	Nov 2024	Jul 2026	Solar
Tuscola Wind II LLC	Tuscola Wind II LLC	Reese, MI	293 GWh	Oct 2013	Jul 2026	Wind
Quartz Solar, LLC	RWE Clean Energy	Wynne, AR	293 GWh	Feb 2025	Jul 2026	Solar
River Fork Solar, LLC	River Fork Solar, LLC	Albion, MI	291 GWh	Sep 2024	Jul 2026	Solar
Sumpter	Wolverine Power Supply Coop	Belleville, MI	291 GWh	Jun 2002	Dec 2025	Natural Gas
Washington Parish Energy Center	Entergy Louisiana LLC	Bogalusa, LA	290 GWh	Oct 2020	Jul 2026	Natural Gas
Winfield Solar	Winfield Solar I, LLC	Winfield, MO	289 GWh	Apr 2025	Jul 2026	Solar
Wever Solar (150MW)	Interstate Power and Light Co	Wever, IA	288 GWh	Oct 2024	Jul 2026	Solar
San Jacinto County Peaking Facility	East Texas Electric Coop, Inc	Shepherd, TX	287 GWh	Jun 2001	Dec 2025	Natural Gas
Ames Electric Services Power Plant	City of Ames - (IA)	Ames, IA	285 GWh	Apr 1968	Dec 2025	Natural Gas : 91.0% Other Biomass Solids : 9.0%
Crane Creek Wind Energy Center	Wisconsin Public Service Corp	Riceville, IA	284 GWh	Nov 2009	Dec 2025	Wind
Silver Creek	Cooperative Energy	Prentiss, MS	282 GWh	May 2003	Dec 2025	Natural Gas
Wood County	Wisconsin Power & Light Co	Nekoosa, WI	279 GWh	Nov 2022	Jul 2026	Solar
Deerfield Wind Energy 2	Deerfield Wind Energy 2, LLC	Port Hope, MI	278 GWh	Feb 2023	Jul 2026	Wind
Kossuth County Wind	Kossuth County Wind, LLC	Lu Verne, IA	276 GWh	Nov 2022	Jul 2026	Wind
Elizabeth Solar Plant	Horus Louisiana 1, LLC	Pitkin, LA	276 GWh	Jul 2024	Jul 2026	Solar
Henry County	Duke Energy Indiana, LLC	New Castle, IN	275 GWh	Jun 2001	Dec 2025	Natural Gas
T B Simon Power Plant	Michigan State University	East Lansing, MI	274 GWh	Nov 1965	Jul 2026	Natural Gas
Pleasant Creek Unit 2	Interstate Power and Light Co	Palo, IA	273 GWh	Nov 2024	Jul 2026	Solar
Franklin County Wind Farm	Interstate Power and Light Co	Iowa Falls, IA	271 GWh	Nov 2012	Dec 2025	Wind
Lost Lakes Wind Farm LLC	Lost Lakes Wind Farm LLC	Lake Park, IA	270 GWh	Nov 2009	Dec 2025	Wind
Bison 2 Wind Energy Center	ALLETE, Inc.	New Salem, ND	270 GWh	Nov 2012	Dec 2025	Wind
Rail Splitter Wind Farm	Rail Splitter Wind Farm LLC	Hopedale, IL	269 GWh	Jul 2009	Dec 2025	Wind
Wapsipinicon Wind Project	EDF Renewable Asset Holdings, Inc.	Dexter, MN	268 GWh	Jan 2009	Dec 2025	Wind
Bison 3 Wind Energy Center	ALLETE, Inc.	New Salem, ND	268 GWh	Nov 2012	Dec 2025	Wind
Charles City Wind Farm	MidAmerican Energy Co	Charles City, IA	268 GWh	Mar 2008	Dec 2025	Wind
Hickory Solar	Hickory Solar LLC	Jerseyville, IL	266 GWh	Aug 2024	Jul 2026	Solar
New Harvest Wind Project LLC	Avangrid Power LLC	Schleswig, IA	263 GWh	Nov 2011	Dec 2025	Wind
Spiritwood Station	Great River Energy	Spiritwood, ND	263 GWh	Oct 2014	Jul 2026	Natural Gas : 60.6% Refined Coal : 39.4%
Portside Energy	Primary Energy Recycling Holdings, LLC	Portage, IN	262 GWh	Aug 1997	Dec 2025	Natural Gas
Gratiot County Wind LLC	Invenergy Services LLC	Breckenridge, MI	262 GWh	Apr 2012	Dec 2025	Wind
Sylvarena	Cooperative Energy	Raleigh, MS	262 GWh	Jun 2003	Dec 2025	Natural Gas
Onion River	Wisconsin Power & Light Co	Sheboygan Cedar Grove, WI	262 GWh	Nov 2023	Jul 2026	Solar
Pleasantville Solar Park	Pleasantville Solar Park LLC	Ipava, IL	259 GWh	Oct 2025	Jul 2026	Solar

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