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
Perryville Power Station	Entergy Louisiana LLC	Sterlington, LA	4 TWh	May 2001	Dec 2025	Natural Gas
Cannon Falls Energy Center	Invenergy Services LLC	Cannon Falls, MN	809 GWh	Mar 2008	Dec 2025	Natural Gas
Archer Daniels Midland Cedar Rapids	Archer Daniels Midland Co	Cedar Rapids, IA	990 GWh	Oct 1988	Dec 2025	Subbituminous Coal : 60.4% Natural Gas : 24.6% Bituminous Coal : 15.0%
Smithland Hydroelectric Plant	American Mun Power-Ohio, Inc	Smithland, KY	336 GWh	Jun 2017	Dec 2025	Water
Archer Daniels Midland Decatur	Archer Daniels Midland Co	Decatur, IL	901 GWh	Mar 1987	Dec 2025	Bituminous Coal : 61.1% Subbituminous Coal : 38.6%
Gratiot Wind Park	DTE Electric Company	Breckenridge, MI	235 GWh	Oct 2011	Dec 2025	Wind
Buffalo Ridge II LLC	Avangrid Power LLC	Elkton, SD	479 GWh	Nov 2010	Dec 2025	Wind
Lewis & Clark	Montana-Dakota Utilities Co	Richland, MT	10 GWh	Sep 1958	Dec 2025	Natural Gas
Sherburne County	Northern States Power Co - Minnesota	Becker, MN	7 TWh	Mar 1976	Dec 2025	Subbituminous Coal : 99.8%
Pine Tree Acres WM LFGTE	WM Renewable Energy LLC	Lenox, MI	88 GWh	Feb 2012	Dec 2025	Landfill Gas
Crystal Lake 3 LLC	Crystal Lake 3 LLC	Britt, IA	237 GWh	Nov 2009	Dec 2025	Wind
Garden Wind LLC	Garden Wind LLC	Zearing, IA	375 GWh	Nov 2009	Dec 2025	Wind
University of Northern Iowa	University of Northern Iowa	Cedar Falls, IA	21 GWh	Oct 1982	Dec 2025	Natural Gas : 72.3% Petroleum Coke : 18.0% Bituminous Coal : 9.6%
Big Stone	Otter Tail Power Co	Big Stone City, SD	2 TWh	Apr 1975	Dec 2025	Subbituminous Coal : 99.8%
Rolling Hills Wind Farm	MidAmerican Energy Co	Massena, IA	2 TWh	Nov 2011	Dec 2025	Wind
Dow St Charles Operations	Dow Chemical Co - St Charles	Taft, LA	2 TWh	Nov 1996	Dec 2025	Natural Gas : 99.2% Other Gas : 0.8%
Gibson	Duke Energy Indiana, LLC	Owensville, IN	11 TWh	Mar 1975	Dec 2025	Bituminous Coal : 99.6%
Purdue University	Purdue University	West Lafayette, IN	93 GWh	Dec 1968	Dec 2025	Natural Gas : 91.8% Bituminous Coal : 8.2%
A B Brown	Southern Indiana Gas & Elec Co	Mount Vernon, IN	497 GWh	Feb 1979	Dec 2025	Natural Gas
Callaway	Union Electric Co - (MO)	Fulton, MO	7 TWh	Nov 1984	Dec 2025	Nuclear
Prairie Rose Wind Farm	Enel Green Power NA, Inc.	Hardwick, MN	460 GWh	Nov 2012	Dec 2025	Wind
Kindred School	Kindred Public School	Kindred, ND	152 MWh	Sep 2001	Dec 2025	Distillate Fuel Oil
Alpena Cement Plant	Lafarge Corp	Alpena, MI	175 GWh	Dec 1951	Dec 2025	Petroleum Coke : 85.0% Natural Gas : 15.0%
Brame Energy Center	Cleco Power LLC	Lena, LA	3 TWh	May 1975	Dec 2025	Subbituminous Coal : 46.8% Natural Gas : 31.0% Petroleum Coke : 15.9% Bituminous Coal : 6.4%
Wilmarth	Northern States Power Co - Minnesota	Mankato, MN	98 GWh	Aug 1948	Dec 2025	Non-biogenic Municipal Solid Waste : 54.0% Biogenic Municipal Solid Waste : 44.2% Natural Gas : 1.7%
Georgia-Pacific Corp - Nekoosa Mill	Domtar Industries Inc	Nekoosa, WI	179 GWh	Dec 1911	Dec 2025	Black Liquor : 43.4% Natural Gas : 42.5% Water : 14.1%
Riverside (MN)	Northern States Power Co - Minnesota	Minneapolis, MN	313 GWh	Mar 1987	Dec 2025	Natural Gas
Red Wing	Northern States Power Co - Minnesota	Red Wing, MN	125 GWh	Sep 1949	Dec 2025	Non-biogenic Municipal Solid Waste : 52.7% Biogenic Municipal Solid Waste : 43.2% Wood/Wood Waste Solids : 3.3% Natural Gas : 0.8%
Prairie Island	Northern States Power Co - Minnesota	Welch, MN	9 TWh	Jan 1974	Dec 2025	Nuclear
Monticello Nuclear Facility	Northern States Power Co - Minnesota	Monticello, MN	5 TWh	May 1971	Dec 2025	Nuclear
Allen S King	Northern States Power Co - Minnesota	Oak Park Heights, MN	890 GWh	Feb 1958	Dec 2025	Subbituminous Coal : 99.6%
Merom	Hallador Power Company, LLC	Sullivan, IN	5 TWh	Jan 1982	Dec 2025	Bituminous Coal : 99.7%
High Bridge	Northern States Power Co - Minnesota	St. Paul, MN	3 TWh	Apr 2008	Dec 2025	Natural Gas
Menominee Mill Marinette	Eagle Creek Renewable Energy, LLC	Menominee, MI	11 GWh	Dec 1923	Dec 2025	Water
Point Beach Nuclear Plant	NextEra Energy Point Beach LLC	Two Rivers, WI	10 TWh	May 1969	Dec 2025	Nuclear
University of Michigan	University of Michigan	Ann Arbor, MI	213 GWh	Dec 1974	Dec 2025	Natural Gas
Edgewater	Wisconsin Power & Light Co	Sheboygan, WI	2 TWh	Jun 1951	Dec 2025	Subbituminous Coal : 99.9%
Manitowoc	Manitowoc Public Utilities	Manitowoc, WI	178 GWh	May 1955	Dec 2025	Wood/Wood Waste Solids : 90.5% Petroleum Coke : 5.3% Bituminous Coal : 3.9%
Ottumwa	Interstate Power and Light Co	Ottumwa, IA	3 TWh	Apr 1981	Dec 2025	Subbituminous Coal : 99.7%
M L Hibbard	ALLETE, Inc.	Duluth, MN	98 GWh	May 1949	Dec 2025	Wood/Wood Waste Solids : 91.0% Subbituminous Coal : 6.9% Natural Gas : 2.1%
Wabash Valley Power IGCC	Wabash Valley Power Assn, Inc	Terre Haute, IN	354 GWh	Nov 1953	Dec 2025	Natural Gas
Valley Queen Cheese	Valley Queen Cheese Factory, Inc.	Milbank, SD	12 MWh	Mar 2002	Dec 2025	Distillate Fuel Oil
Sigel Wind Park	DTE Electric Company	Harbor Beach, MI	253 GWh	Nov 2012	Dec 2025	Wind
Clay Boswell	ALLETE, Inc.	Cohasset, MN	6 TWh	Jun 1958	Dec 2025	Subbituminous Coal : 99.8%
Minden Wind Park	DTE Electric Company	Minden City, MI	112 GWh	Nov 2012	Dec 2025	Wind
McKinley Wind Park	DTE Electric Company	Pigeon, MI	52 GWh	Nov 2012	Dec 2025	Wind
Eclipse Wind Farm	MidAmerican Energy Co	Adair, IA	832 GWh	Aug 2012	Dec 2025	Wind
PPG Riverside	Westlake 2 US LLC	Lake Charles, LA	42 GWh	Aug 1947	Dec 2025	Purchased Steam
PPG Powerhouse C	Westlake 2 US LLC	Lake Charles, LA	2 TWh	Jul 1977	Dec 2025	Natural Gas
Columbia (WI)	Wisconsin Power & Light Co	Pardeville, WI	6 TWh	Apr 1975	Dec 2025	Subbituminous Coal : 99.9%
Lake Charles Polymers	Equistar Chemicals LP	Westlake, LA	196 GWh	Aug 2011	Dec 2025	Natural Gas
River Bend	Entergy Louisiana LLC	St. Francisville, LA	7 TWh	May 1986	Dec 2025	Nuclear
SIUC	Southern Illinois University Carbondale	Carbondale, IL	9 GWh	May 1998	Dec 2025	Bituminous Coal
Wyandotte	Wyandotte Municipal Serv Comm	Wyandotte, MI	53 MWh	Dec 1947	Dec 2025	Distillate Fuel Oil
ADA Carbon Solutions Red River	ADA Carbon Solutions (Red River), LLC	Coushatta, LA	101 GWh	Jan 2011	Dec 2025	Waste Heat
MSC Sebewaing	Michigan Sugar Company	Sebewaing, MI	572 MWh	Sep 1979	Dec 2025	Bituminous Coal : 67.1% Natural Gas : 32.9%
Roquette America	Roquette America	Keokuk, IA	207 GWh	Jun 2004	Dec 2025	Natural Gas
Omega Hills Gas Recovery	WM Renewable Energy LLC	Germantown, WI	79 GWh	Nov 1985	Dec 2025	Landfill Gas
Mosinee Mill	Ahlstrom-Munksjo NA Specialty Solutions, LLC	Mosinee, WI	118 GWh	Jun 1916	Dec 2025	Black Liquor : 51.4% Bituminous Coal : 14.4% Water : 12.5% Natural Gas : 12.1% Wood/Wood Waste Solids : 6.3% Residual Fuel Oil : 1.7% Sludge Waste : 1.6%
ExxonMobil Beaumont Refinery	ExxonMobil Oil Corp	Beaumont, TX	4 TWh	Dec 1965	Dec 2025	Natural Gas : 96.8% Other Gas : 3.2%
California Ridge Wind Energy LLC	SunEdison LLC	Fithian, IL	653 GWh	Nov 2012	Dec 2025	Wind
Washington Parish Energy Center	Entergy Louisiana LLC	Bogalusa, LA	411 GWh	Oct 2020	Dec 2025	Natural Gas
Ouachita	Entergy Louisiana LLC	Sterlington, LA	4 TWh	Jul 2002	Dec 2025	Natural Gas
Sappi Cloquet Mill	Sappi Cloquet LLC	Cloquet, MN	443 GWh	Dec 1928	Dec 2025	Black Liquor : 63.5% Wood/Wood Waste Solids : 17.9% Natural Gas : 14.2% Water : 3.6%
New Badger	City of Kaukauna	Kaukauna, WI	44 GWh	Dec 2013	Dec 2025	Water
SABIC Innovative Plastics Mt. Vernon	SABIC IP Mt. Vernon, LLC	Mount Vernon, IN	478 GWh	May 1996	Dec 2025	Natural Gas
PCA, Filer City Mill	PCA, Filer City Mill	Filer City, MI	90 GWh	Dec 1949	Dec 2025	Natural Gas
Gary Works	United States Steel-Gary	Gary, IN	950 GWh	Mar 1997	Dec 2025	Blast Furnace Gas : 53.1% Natural Gas : 46.9%
Echo Wind Park	DTE Electric Company	Elkton, MI	575 GWh	Dec 2013	Dec 2025	Wind
Plaquemine Cogeneration Plant	Dow Chemical Co	Plaquemine, LA	6 TWh	Feb 2004	Dec 2025	Natural Gas : 97.5% Other Gas : 2.5%
TES Filer City Station	TES Filer City Station LP	Filer City, MI	351 GWh	Apr 1990	Dec 2025	Bituminous Coal : 64.8% Natural Gas : 21.1% Wood/Wood Waste Solids : 14.1%
Pine Tree Acres	NextEra Renewable Fuels, LLC	Lenox Twp, MI	60 GWh	May 1998	Dec 2025	Landfill Gas
Degray	USCE -Vickburg District	Arkadelphia, AR	211 GWh	Jan 1972	Dec 2025	Water
Waxdale	S.C. Johnson & Son, Inc.	Sturtevant, WI	37 GWh	Nov 2003	Dec 2025	Natural Gas : 43.0% Landfill Gas : 35.1% Wind : 13.4% Solar : 8.5%
Clinton Power Station	Constellation Nuclear	Clinton, IL	8 TWh	Oct 1987	Dec 2025	Nuclear
George Neal South	MidAmerican Energy Co	Salix, IA	2 TWh	Jun 1979	Dec 2025	Subbituminous Coal : 99.0% Distillate Fuel Oil : 1.0%
Baldwin Energy Complex	Dynegy Midwest Generation Inc	Baldwin, IL	7 TWh	Jun 1970	Dec 2025	Subbituminous Coal : 99.8%
Central Michigan University	Central Michigan University	Mt. Pleasant, MI	30 GWh	Nov 1987	Dec 2025	Natural Gas
Westlake Plaquemine	Westlake Chemicals & Vinyls LLC	Plaquemine, LA	1 TWh	Apr 1997	Dec 2025	Natural Gas : 98.5% Other Gas : 1.5%
Zimmerman Energy	Landfill Energy Systems	Argos, IN	40 GWh	Oct 2014	Dec 2025	Landfill Gas
Heat Recovery Coke Facility	Cokenergy Inc	East Chicago, IN	419 GWh	Mar 1998	Dec 2025	Waste Heat
Pine Bluff Energy Center	Pine Bluff Energy LLC	Pine Bluff, AR	1 TWh	Jul 2001	Dec 2025	Natural Gas
Zeeland Generating Station	Consumers Energy Co - (MI)	Zeeland, MI	5 TWh	May 2001	Dec 2025	Natural Gas
Dearborn Industrial Generation	Dearborn Industrial Gen Inc	Dearborn, MI	4 TWh	May 1999	Dec 2025	Natural Gas : 90.7% Blast Furnace Gas : 9.3%
Taft Cogeneration Facility	Occidental Chemical Corporation	Hahnville, LA	6 TWh	Jun 2002	Dec 2025	Natural Gas : 98.8% Other Gas : 1.2%
Geneseo	City of Geneseo - (IL)	Geneseo, IL	8 GWh	Jun 1957	Dec 2025	Wind : 77.0% Solar : 21.4%
MMSD Jones Island Wastewater	Milwaukee Metro Sewerage Dist	Milwaukee, WI	80 GWh	Dec 1970	Dec 2025	Natural Gas : 80.4% Landfill Gas : 18.4% Distillate Fuel Oil : 1.2%
City of Peru Plank Road Generating Station	City of Peru - (IL)	Peru, IL	17 GWh	Sep 1968	Dec 2025	Water : 98.7% Distillate Fuel Oil : 1.2%
Weston	Wisconsin Public Service Corp	Rothschild, WI	5 TWh	Nov 1954	Dec 2025	Subbituminous Coal : 99.4% Natural Gas : 0.6%
Rantoul	Village of Rantoul - (IL)	Rantoul, IL	186 MWh	Dec 1950	Dec 2025	Distillate Fuel Oil
Dallman	City of Springfield - (IL)	Springfield, IL	901 GWh	May 1968	Dec 2025	Bituminous Coal : 99.7%
Sullivan (IL)	City of Sullivan - (IL)	Sullivan, IL	284 MWh	May 1946	Dec 2025	Distillate Fuel Oil
RS Cogen	Westlake 2 US LLC	Lake Charles, LA	3 TWh	Nov 2002	Dec 2025	Natural Gas
Marion	Southern Illinois Power Coop	Marion, IL	767 GWh	May 1963	Dec 2025	Bituminous Coal : 87.8% Natural Gas : 12.1%
Harding Street	AES Indiana	Indianapolis, IN	3 TWh	May 1958	Dec 2025	Natural Gas
Eagle Valley (IN)	AES Indiana	Martinsville, IN	6 TWh	Nov 1951	Dec 2025	Natural Gas
CC Perry K	Citizens Thermal Energy	Indianapolis, IN	10 GWh	Dec 1924	Dec 2025	Natural Gas
AES Petersburg	AES Indiana	Petersburg, IN	5 TWh	May 1967	Dec 2025	Bituminous Coal : 99.8%
Michigan City	Northern Indiana Pub Serv Co	Michigan City, IN	2 TWh	Apr 1974	Dec 2025	Subbituminous Coal : 78.0% Bituminous Coal : 20.4% Natural Gas : 1.6%
Tatanka Wind Power LLC	Acciona Wind Energy USA LLC	Ashley, ND	476 GWh	Dec 2007	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