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
Hardin County Peaking Facility	Entergy Texas Inc.	Kountze, TX	257 GWh	Jun 2001	Dec 2025	Natural Gas
Red Barn Energy	Wisconsin Public Service Corp	Montfort, WI	255 GWh	Mar 2023	Jul 2026	Wind
Saratoga Wind Farm	Madison Gas & Electric Co	Lime Springs, IA	255 GWh	Jan 2019	Jul 2026	Wind
Calhoun County Solar Project	AES Clean Energy	Sheridan Township, MI	254 GWh	Feb 2025	Jul 2026	Solar
Farmers City Wind LLC	Avangrid Power LLC	Tarkio, MO	253 GWh	Mar 2009	Dec 2025	Wind
Markland	Duke Energy Indiana, LLC	Florence, IN	253 GWh	Dec 1966	Dec 2025	Water
Lake Winds Energy Park	Consumers Energy Co - (MI)	Ludington, MI	251 GWh	Oct 2012	Dec 2025	Wind
Hancock County Wind Energy Center	FPL Energy Hancock County Wind, LLC	Garner, IA	250 GWh	Nov 2002	Jul 2026	Wind
Macksburg Wind Project	MidAmerican Energy Co	Macksburg, IA	249 GWh	Nov 2014	Dec 2025	Wind
Apple Blossom Wind Farm	Apple Blossom Wind, LLC	Pigeon, MI	248 GWh	Oct 2017	Jul 2026	Wind
Port Arthur Texas Refinery	Total Petrochemicals USA Inc	Port Arthur, TX	248 GWh	Jul 1988	Dec 2025	Natural Gas : 71.8% Other Gas : 28.2%
Sigel Wind Park	DTE Electric Company	Harbor Beach, MI	246 GWh	Nov 2012	Jul 2026	Wind
Brookfield	DTE Electric Company	Pigeon, MI	245 GWh	Jan 2014	Jul 2026	Wind
Pheasant Run Wind LLC	Pheasant Run Wind LLC	Pigeon, MI	245 GWh	Nov 2013	Jul 2026	Wind
Liberty County Solar Project	Liberty County Solar Project, LLC	Dayton, TX	245 GWh	Aug 2024	Jul 2026	Solar
RATTS 1	Ratts 1 Solar LLC	Petersburg, IN	244 GWh	Sep 2025	Jul 2026	Solar
Prairie Ronde Solar Farm	Lightsource Renewable Energy Asset Management, LLC	Opelousas, LA	244 GWh	Oct 2024	Jul 2026	Solar
Hoosier Wind Project LLC	AES Indiana	Goodland, IN	243 GWh	Oct 2009	Dec 2025	Wind
Consumer Operations LLC	Georgia-Pacific Consumer Oper. Green Bay LLC	Green Bay, WI	242 GWh	Dec 1953	Jul 2026	Natural Gas
Crossroads Solar (IN)	Crossroads Solar, LLC - (IN)	Van Buren Township, IN	241 GWh	Nov 2025	Jul 2026	Solar
Coldwater River Solar	Coldwater River Solar, LLC	Coldwater, MI	241 GWh	Jun 2025	Jul 2026	Solar
Ragsdale Solar LLC	Ragsdale Solar, LLC	Canton, MS	239 GWh	Oct 2024	Jul 2026	Solar
Angus Anson	Northern States Power Co - Minnesota	Sioux Falls, SD	239 GWh	Jul 1994	Dec 2025	Natural Gas : 99.9%
Dearborn Energy Center	DTE Electric Company	Dearborn, MI	237 GWh	Nov 2019	Dec 2025	Natural Gas
Lake Benton I	ALLETE Clean Energy	Lake Benton, MN	235 GWh	Jan 1998	Dec 2025	Wind
Crystal Lake 3 LLC	Crystal Lake 3 LLC	Britt, IA	232 GWh	Nov 2009	Jul 2026	Wind
University of Michigan	University of Michigan	Ann Arbor, MI	232 GWh	Dec 1974	Jul 2026	Natural Gas
Montpelier Electric Generating Station	Kimura Power LLC	Poneto, IN	231 GWh	May 2001	Jul 2026	Natural Gas : 99.1% Distillate Fuel Oil : 0.9%
Whitewater Generating Station	Wisconsin Electric Power Co	Whitewater, WI	230 GWh	Aug 1997	Jul 2026	Natural Gas : 99.0% Distillate Fuel Oil : 1.0%
Sauk Solar Park	DTE Electric Company	Union City, MI	229 GWh	Dec 2024	Jul 2026	Solar
Prairie Mist Solar	Prairie Mist Solar Project, LLC	Montrose, AR	229 GWh	Aug 2024	Jul 2026	Solar
Tilden Solar	Sol Systems	Coulterville, IL	228 GWh	Oct 2025	Jul 2026	Solar
Dressor Plains Solar, LLC	Dressor Plains Solar, LLC	Herrick, IL	225 GWh	Aug 2021	Jul 2026	Solar
CITGO Refinery Powerhouse	CITGO Petroleum Corp	Sulphur, LA	224 GWh	Dec 1941	Dec 2025	Other Gas
Assembly Solar II LLC	Assembly Solar II LLC	Lennon, MI	223 GWh	Nov 2021	Jul 2026	Solar
Roquette America	Roquette America	Keokuk, IA	222 GWh	Jun 2004	Jul 2026	Natural Gas
Prairie State Solar Project	Prairie State Solar, LLC	Swanwick Township, IL	221 GWh	Jun 2021	Jul 2026	Solar
Kelso Solar	Kelso Solar, LLC	Benton, MO	221 GWh	Nov 2025	Jul 2026	Solar
Petersburg Energy Center	Petersburg Energy Center, LLC	Petersburg, IN	220 GWh	-	Jul 2026	Solar
Blakely Mountain	USCE -Vickburg District	Royal, AR	216 GWh	Aug 1955	Dec 2025	Water
Chickadee G-3	Chickadee 3-G Purchaser LLC	Beaumont, TX	216 GWh	Feb 1987	Jul 2026	Natural Gas : 98.4% Waste/Other Oil : 1.6%
Paris (WI)	Wisconsin Electric Power Co	Union Grove, WI	215 GWh	Feb 1995	Dec 2025	Natural Gas
Gratiot Wind Park	DTE Electric Company	Breckenridge, MI	214 GWh	Oct 2011	Jul 2026	Wind
Badger Hollow II	Wisconsin Electric Power Co	Cobb, WI	214 GWh	Nov 2023	Jul 2026	Solar
Covanta Hennepin Energy	Covanta Energy Co	Minneapolis, MN	214 GWh	Sep 1989	Jul 2026	Non-biogenic Municipal Solid Waste : 54.5% Biogenic Municipal Solid Waste : 44.6% Natural Gas : 0.8%
Lotus Wind	Lotus Wind, LLC	Modesto, IL	213 GWh	-	Jul 2026	Wind
University of Illinois Abbott Power Plt	University of Illinois	Champaign, IL	213 GWh	Oct 1940	Dec 2025	Natural Gas : 97.0% Bituminous Coal : 3.0%
Alpena Cement Plant	Amrize Cement Inc.	Alpena, MI	212 GWh	Dec 1951	Jul 2026	Petroleum Coke : 86.9% Natural Gas : 13.1%
Chicot Solar	Chicot Solar, LLC	Lake Village, AR	210 GWh	Aug 2020	Jul 2026	Solar
Happy Solar 1	Lightsource Renewable Energy Asset Management, LLC	Searcy, AR	210 GWh	Sep 2023	Jul 2026	Solar
Bayou Galion Solar Project	Bayou Galion Solar Project, LLC	Mer Rouge, LA	208 GWh	Oct 2024	Jul 2026	Solar
Springfield Solar (WI)	Wisconsin Power & Light Co	Lomira, WI	208 GWh	Nov 2023	Jul 2026	Solar
Sam Rayburn Dam	USACE-Fort Worth District	Jasper, TX	208 GWh	Aug 1965	Dec 2025	Water
Amite Solar, LLC	Amite Solar, LLC	Roseland, LA	208 GWh	Feb 2025	Jul 2026	Solar
Indiana Harbor West	Cleveland Cliffs	East Chicago, IN	208 GWh	Sep 1939	Dec 2025	Natural Gas
Holliday Creek Solar	MidAmerican Energy Co	Fort Dodge, IA	206 GWh	Jun 2022	Jul 2026	Solar
International Paper Vicksburg Mill	International Paper Co-Vicksbg	Vicksburg, MS	204 GWh	Dec 1966	Jul 2026	Black Liquor : 54.2% Natural Gas : 31.2% Wood/Wood Waste Solids : 14.6%
Cereal City Solar, LLC	Cereal City Solar, LLC	Battle Creek, MI	204 GWh	Nov 2023	Jul 2026	Solar
Concord	Wisconsin Electric Power Co	Watertown, WI	203 GWh	Jun 1993	Dec 2025	Natural Gas : 98.9% Distillate Fuel Oil : 1.1%
Worthington Generation LLC	Hoosier Energy R E C, Inc	Worthington, IN	203 GWh	May 2000	Dec 2025	Natural Gas
Walnut Bend Solar Station PV	Entergy Arkansas LLC	Moro, AR	203 GWh	Aug 2024	Jul 2026	Solar
Wapello Solar LLC	Wapello Solar LLC	Wapello, IA	203 GWh	Feb 2021	Jul 2026	Solar
Red Rock Hydro Plant	Western Minnesota Mun Pwr Agny	Pella, IA	202 GWh	Apr 2021	Jul 2026	Water
Eldorado Solar II	Sol Systems	Eldorado, IL	202 GWh	Sep 2025	Jul 2026	Solar
Independence Wind Farm	Independence Wind Energy LLC	Manchester, IA	201 GWh	Nov 2021	Jul 2026	Wind
Wilton Wind II LLC	Wilton Wind II LLC	Wilton, ND	201 GWh	Oct 2009	Dec 2025	Wind
Badger Hollow I	Wisconsin Public Service Corp	Montfort, WI	201 GWh	Oct 2021	Jul 2026	Solar
Lake Charles Polymers	Equistar Chemicals LP	Westlake, LA	200 GWh	Aug 2011	Jul 2026	Natural Gas
Point Beach Solar	Point Beach Solar	Two Creeks, WI	199 GWh	Aug 2021	Jul 2026	Solar
Harvest 2	Harvest II Windfarm, LLC	Elkton, MI	199 GWh	Oct 2012	Dec 2025	Wind
Crossett Solar	Cubico USA, LLC	Crossett, AR	198 GWh	Aug 2024	Jul 2026	Solar
Thomson	ALLETE, Inc.	Carlton, MN	198 GWh	Dec 1906	Dec 2025	Water
Wildflower Solar, LLC (MS)	Deriva Energy	DeSoto, MS	197 GWh	Apr 2024	Jul 2026	Solar
Harvest Gold Solar	Harvest Gold Solar Power, LLC	Indianola, MS	197 GWh	Jul 2024	Jul 2026	Solar
MU Combined Heat and Power Plant	Curators of the University of Missouri	Columbia, MO	197 GWh	Jun 1961	Jul 2026	Natural Gas : 77.6% Wood/Wood Waste Solids : 20.6% Bituminous Coal : 1.8%
Bison I Wind Energy Center	ALLETE, Inc.	New Salem, ND	196 GWh	Nov 2010	Dec 2025	Wind
Jeffers Wind 20 LLC	Northern States Power Co - Minnesota	Jeffers, MN	196 GWh	Sep 2008	Dec 2025	Wind
Syl Laskin	ALLETE, Inc.	Hoyt Lakes, MN	196 GWh	May 1953	Dec 2025	Natural Gas
Wautoma Solar	Wisconsin Power & Light Co	Wautoma, WI	192 GWh	Nov 2023	Jul 2026	Solar
Elm Creek Wind LLC	Avangrid Power LLC	Trimont, MN	192 GWh	Nov 2008	Dec 2025	Wind
Osceola Windpower II	Osceola Windpower II	Harris, IA	191 GWh	Aug 2008	Jul 2026	Wind
FPL Energy Oliver Wind II LLC	FPL Energy Oliver County Wind II LLC	Center, ND	189 GWh	Nov 2007	Dec 2025	Wind
Wheatland	Origis Energy USA, Inc	Wheatland, IN	187 GWh	-	Jul 2026	Solar
Elm Creek Wind II LLC	Avangrid Power LLC	Trimont, MN	187 GWh	Nov 2010	Dec 2025	Wind
Two Creeks Solar	Wisconsin Public Service Corp	Two Rivers, WI	187 GWh	Oct 2020	Jul 2026	Solar
FPL Energy Burleigh County Wind	FPL Energy Burleigh County Wind LLC	Wilton, ND	186 GWh	Nov 2005	Dec 2025	Wind
Beebe 1A	Beebe Renewable Energy, LLC	Ithaca, MI	186 GWh	Nov 2012	Dec 2025	Wind
Manitowoc	Manitowoc Public Utilities	Manitowoc, WI	185 GWh	May 1955	Jul 2026	Wood/Wood Waste Solids : 80.7% Petroleum Coke : 9.9% Bituminous Coal : 9.1%
Ada Cogeneration LP	Ada Cogeneration LLC	Ada, MI	185 GWh	Sep 1990	Dec 2025	Natural Gas
Cedar Ridge	Wisconsin Power & Light Co	Eden, WI	185 GWh	Nov 2008	Dec 2025	Wind
A.J. Mihm Generating Station	Upper Michigan Energy Resources Company	Pelkie, MI	185 GWh	Feb 2019	Dec 2025	Natural Gas
Shelby Energy County	Shelby County Energy Center, LLC	Neoga, IL	184 GWh	May 2000	Dec 2025	Natural Gas
Grayling Generating Station	NorthStar Clean Energy	Grayling, MI	182 GWh	Apr 1992	Dec 2025	Wood/Wood Waste Solids
FPL Energy Oliver Wind I LLC	FPL Energy Oliver County Wind	Center, ND	182 GWh	Nov 2006	Dec 2025	Wind
St. Mary Clean Energy Center	Cleco Power LLC	Centerville, LA	181 GWh	Jul 2019	Dec 2025	Waste Heat
Edison Sault	Cloverland Electric Co-op	Sault Ste. Marie, MI	181 GWh	Jun 1901	Dec 2025	Water
Atlantic Alumina, Gramercy Operations	Atalco Gramercy LLC	Gramercy, LA	181 GWh	Jan 1958	Dec 2025	Natural Gas
Muskegon Solar	Consumers Energy Co - (MI)	Muskegon, MI	180 GWh	-	Jul 2026	Solar
De Pere Energy Center	Wisconsin Public Service Corp	De Pere, WI	180 GWh	May 1999	Dec 2025	Natural Gas : 59.9% Distillate Fuel Oil : 40.1%
Fairbanks Wind Park	DTE Electric Company	Garden, MI	180 GWh	Dec 2021	Jul 2026	Wind

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