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	Jan 2026
Annual Generation	656.9 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 \| 35.4% Coal \| 28.9% Wind \| 15.1% Nuclear \| 14% Solar \| 4.6% 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
Buffalo Ridge II LLC	Avangrid Power LLC	Elkton, SD	468 GWh	Nov 2010	Oct 2025	Wind
Lewis & Clark	Montana-Dakota Utilities Co	Richland, MT	8 GWh	Sep 1958	Oct 2025	Natural Gas
Sherburne County	Northern States Power Co - Minnesota	Becker, MN	7 TWh	Mar 1976	Oct 2025	Subbituminous Coal : 99.9%
Pine Tree Acres WM LFGTE	WM Renewable Energy LLC	Lenox, MI	81 GWh	Feb 2012	Oct 2025	Landfill Gas
Crystal Lake 3 LLC	Crystal Lake 3 LLC	Britt, IA	233 GWh	Nov 2009	Oct 2025	Wind
Garden Wind LLC	Garden Wind LLC	Zearing, IA	352 GWh	Nov 2009	Oct 2025	Wind
University of Northern Iowa	University of Northern Iowa	Cedar Falls, IA	21 GWh	Oct 1982	Oct 2025	Natural Gas : 76.8% Petroleum Coke : 16.2% Bituminous Coal : 6.9%
Big Stone	Otter Tail Power Co	Big Stone City, SD	2 TWh	Apr 1975	Oct 2025	Subbituminous Coal : 99.8%
Rolling Hills Wind Farm	MidAmerican Energy Co	Massena, IA	2 TWh	Nov 2011	Oct 2025	Wind
Dow St Charles Operations	Dow Chemical Co - St Charles	Taft, LA	2 TWh	Nov 1996	Oct 2025	Natural Gas : 99.2% Other Gas : 0.8%
Gibson	Duke Energy Indiana, LLC	Owensville, IN	11 TWh	Mar 1975	Oct 2025	Bituminous Coal : 99.6%
Purdue University	Purdue University	West Lafayette, IN	87 GWh	Dec 1968	Oct 2025	Natural Gas : 91.3% Bituminous Coal : 8.7%
A B Brown	Southern Indiana Gas & Elec Co	Mount Vernon, IN	449 GWh	Feb 1979	Oct 2025	Natural Gas : 99.9%
Callaway	Union Electric Co - (MO)	Fulton, MO	8 TWh	Nov 1984	Oct 2025	Nuclear
Prairie Rose Wind Farm	Enel Green Power NA, Inc.	Hardwick, MN	435 GWh	Nov 2012	Oct 2025	Wind
Kindred School	Kindred Public School	Kindred, ND	200 MWh	Sep 2001	Oct 2025	Distillate Fuel Oil
Alpena Cement Plant	Lafarge Corp	Alpena, MI	179 GWh	Dec 1951	Oct 2025	Petroleum Coke : 84.8% Natural Gas : 15.2%
Brame Energy Center	Cleco Power LLC	Lena, LA	3 TWh	May 1975	Oct 2025	Subbituminous Coal : 45.1% Natural Gas : 31.6% Petroleum Coke : 16.6% Bituminous Coal : 6.7%
Wilmarth	Northern States Power Co - Minnesota	Mankato, MN	98 GWh	Aug 1948	Oct 2025	Non-biogenic Municipal Solid Waste : 54.3% Biogenic Municipal Solid Waste : 44.4% Natural Gas : 1.2%
Georgia-Pacific Corp - Nekoosa Mill	Domtar Industries Inc	Nekoosa, WI	184 GWh	Dec 1911	Oct 2025	Black Liquor : 43.1% Natural Gas : 42.3% Water : 14.6%
Riverside (MN)	Northern States Power Co - Minnesota	Minneapolis, MN	818 GWh	Mar 1987	Oct 2025	Natural Gas
Red Wing	Northern States Power Co - Minnesota	Red Wing, MN	127 GWh	Sep 1949	Oct 2025	Non-biogenic Municipal Solid Waste : 52.3% Biogenic Municipal Solid Waste : 42.8% Wood/Wood Waste Solids : 4.1% Natural Gas : 0.8%
Prairie Island	Northern States Power Co - Minnesota	Welch, MN	8 TWh	Jan 1974	Oct 2025	Nuclear
Monticello Nuclear Facility	Northern States Power Co - Minnesota	Monticello, MN	5 TWh	May 1971	Oct 2025	Nuclear
Allen S King	Northern States Power Co - Minnesota	Oak Park Heights, MN	723 GWh	Feb 1958	Oct 2025	Subbituminous Coal : 99.7%
Merom	Hallador Power Company, LLC	Sullivan, IN	5 TWh	Jan 1982	Oct 2025	Bituminous Coal : 99.8%
High Bridge	Northern States Power Co - Minnesota	St. Paul, MN	3 TWh	Apr 2008	Oct 2025	Natural Gas
Menominee Mill Marinette	Eagle Creek Renewable Energy, LLC	Menominee, MI	12 GWh	Dec 1923	Oct 2025	Water
Point Beach Nuclear Plant	NextEra Energy Point Beach LLC	Two Rivers, WI	10 TWh	May 1969	Oct 2025	Nuclear
University of Michigan	University of Michigan	Ann Arbor, MI	211 GWh	Dec 1974	Oct 2025	Natural Gas
Edgewater	Wisconsin Power & Light Co	Sheboygan, WI	2 TWh	Jun 1951	Oct 2025	Subbituminous Coal : 99.9%
Manitowoc	Manitowoc Public Utilities	Manitowoc, WI	191 GWh	May 1955	Oct 2025	Wood/Wood Waste Solids : 91.6% Petroleum Coke : 4.6% Bituminous Coal : 3.4%
Ottumwa	Interstate Power and Light Co	Ottumwa, IA	3 TWh	Apr 1981	Oct 2025	Subbituminous Coal : 99.7%
M L Hibbard	ALLETE, Inc.	Duluth, MN	99 GWh	May 1949	Oct 2025	Wood/Wood Waste Solids : 93.1% Subbituminous Coal : 6.0% Natural Gas : 0.8%
Wabash Valley Power IGCC	Wabash Valley Power Assn, Inc	Terre Haute, IN	337 GWh	Nov 1953	Oct 2025	Natural Gas
Sigel Wind Park	DTE Electric Company	Harbor Beach, MI	250 GWh	Nov 2012	Oct 2025	Wind
Clay Boswell	ALLETE, Inc.	Cohasset, MN	6 TWh	Jun 1958	Oct 2025	Subbituminous Coal : 99.7%
Minden Wind Park	DTE Electric Company	Minden City, MI	109 GWh	Nov 2012	Oct 2025	Wind
McKinley Wind Park	DTE Electric Company	Pigeon, MI	51 GWh	Nov 2012	Oct 2025	Wind
Eclipse Wind Farm	MidAmerican Energy Co	Adair, IA	814 GWh	Aug 2012	Oct 2025	Wind
PPG Powerhouse C	Westlake 2 US LLC	Lake Charles, LA	2 TWh	Jul 1977	Oct 2025	Natural Gas : 99.6%
Columbia (WI)	Wisconsin Power & Light Co	Pardeville, WI	6 TWh	Apr 1975	Oct 2025	Subbituminous Coal : 99.9%
Lake Charles Polymers	Equistar Chemicals LP	Westlake, LA	200 GWh	Aug 2011	Oct 2025	Natural Gas
River Bend	Entergy Louisiana LLC	St. Francisville, LA	7 TWh	May 1986	Oct 2025	Nuclear
SIUC	Southern Illinois University Carbondale	Carbondale, IL	9 GWh	May 1998	Oct 2025	Bituminous Coal
Wyandotte	Wyandotte Municipal Serv Comm	Wyandotte, MI	47 MWh	Dec 1947	Oct 2025	Distillate Fuel Oil
ADA Carbon Solutions Red River	ADA Carbon Solutions (Red River), LLC	Coushatta, LA	99 GWh	Jan 2011	Oct 2025	Waste Heat
Roquette America	Roquette America	Keokuk, IA	210 GWh	Jun 2004	Oct 2025	Natural Gas
Omega Hills Gas Recovery	WM Renewable Energy LLC	Germantown, WI	80 GWh	Nov 1985	Oct 2025	Landfill Gas
Mosinee Mill	Ahlstrom-Munksjo NA Specialty Solutions, LLC	Mosinee, WI	111 GWh	Jun 1916	Oct 2025	Black Liquor : 51.8% Bituminous Coal : 19.6% Water : 14.7% Wood/Wood Waste Solids : 6.2% Natural Gas : 4.1% Residual Fuel Oil : 1.8% Sludge Waste : 1.8%
ExxonMobil Beaumont Refinery	ExxonMobil Oil Corp	Beaumont, TX	4 TWh	Dec 1965	Oct 2025	Natural Gas : 96.7% Other Gas : 3.3%
California Ridge Wind Energy LLC	SunEdison LLC	Fithian, IL	669 GWh	Nov 2012	Oct 2025	Wind
Washington Parish Energy Center	Entergy Louisiana LLC	Bogalusa, LA	392 GWh	Oct 2020	Oct 2025	Natural Gas
Ouachita	Entergy Louisiana LLC	Sterlington, LA	4 TWh	Jul 2002	Oct 2025	Natural Gas
Sappi Cloquet Mill	Sappi Cloquet LLC	Cloquet, MN	449 GWh	Dec 1928	Oct 2025	Black Liquor : 64.8% Wood/Wood Waste Solids : 17.9% Natural Gas : 13.1% Water : 3.5%
New Badger	City of Kaukauna	Kaukauna, WI	47 GWh	Dec 2013	Oct 2025	Water
SABIC Innovative Plastics Mt. Vernon	SABIC IP Mt. Vernon, LLC	Mount Vernon, IN	429 GWh	May 1996	Oct 2025	Natural Gas
PCA, Filer City Mill	PCA, Filer City Mill	Filer City, MI	91 GWh	Dec 1949	Oct 2025	Natural Gas
Gary Works	United States Steel-Gary	Gary, IN	867 GWh	Mar 1997	Oct 2025	Blast Furnace Gas : 52.3% Natural Gas : 47.7%
Echo Wind Park	DTE Electric Company	Elkton, MI	569 GWh	Dec 2013	Oct 2025	Wind
Plaquemine Cogeneration Plant	Dow Chemical Co	Plaquemine, LA	6 TWh	Feb 2004	Oct 2025	Natural Gas : 97.7% Other Gas : 2.3%
Otter Creek Ethanol Poet - Ashton	Otter Creek Ethanol LLC - Poet Ashton	Ashton, IA	44 GWh	Feb 2004	Oct 2025	Natural Gas
TES Filer City Station	TES Filer City Station LP	Filer City, MI	326 GWh	Apr 1990	Oct 2025	Bituminous Coal : 65.7% Natural Gas : 20.7% Wood/Wood Waste Solids : 13.6%
Kent County Waste to Energy Facility	Kent County	Grand Rapids, MI	99 GWh	Sep 1989	Oct 2025	Non-biogenic Municipal Solid Waste : 54.8% Biogenic Municipal Solid Waste : 44.8%
Pine Tree Acres	NextEra Renewable Fuels, LLC	Lenox Twp, MI	61 GWh	May 1998	Oct 2025	Landfill Gas
Degray	USCE -Vickburg District	Arkadelphia, AR	214 GWh	Jan 1972	Oct 2025	Water
Waxdale	S.C. Johnson & Son, Inc.	Sturtevant, WI	35 GWh	Nov 2003	Oct 2025	Natural Gas : 47.0% Landfill Gas : 31.9% Wind : 12.0% Solar : 9.0%
Clinton Power Station	Constellation Nuclear	Clinton, IL	8 TWh	Oct 1987	Oct 2025	Nuclear
George Neal South	MidAmerican Energy Co	Salix, IA	2 TWh	Jun 1979	Oct 2025	Subbituminous Coal : 99.0% Distillate Fuel Oil : 1.0%
Baldwin Energy Complex	Dynegy Midwest Generation Inc	Baldwin, IL	7 TWh	Jun 1970	Oct 2025	Subbituminous Coal : 99.8%
Central Michigan University	Central Michigan University	Mt. Pleasant, MI	30 GWh	Nov 1987	Oct 2025	Natural Gas
Westlake Plaquemine	Westlake Chemicals & Vinyls LLC	Plaquemine, LA	2 TWh	Apr 1997	Oct 2025	Natural Gas : 98.2% Other Gas : 1.8%
Zimmerman Energy	Landfill Energy Systems	Argos, IN	40 GWh	Oct 2014	Oct 2025	Landfill Gas
Heat Recovery Coke Facility	Cokenergy Inc	East Chicago, IN	428 GWh	Mar 1998	Oct 2025	Waste Heat
Pine Bluff Energy Center	Pine Bluff Energy LLC	Pine Bluff, AR	931 GWh	Jul 2001	Oct 2025	Natural Gas
Zeeland Generating Station	Consumers Energy Co - (MI)	Zeeland, MI	5 TWh	May 2001	Oct 2025	Natural Gas
Dearborn Industrial Generation	Dearborn Industrial Gen Inc	Dearborn, MI	4 TWh	May 1999	Oct 2025	Natural Gas : 88.1% Blast Furnace Gas : 11.9%
Taft Cogeneration Facility	Occidental Chemical Corporation	Hahnville, LA	5 TWh	Jun 2002	Oct 2025	Natural Gas : 98.8% Other Gas : 1.2%
Plum Point Energy Station	NRG Energy Services - Plum Point	Osceola, AR	4 TWh	Aug 2010	Oct 2025	Subbituminous Coal : 99.9%
Geneseo	City of Geneseo - (IL)	Geneseo, IL	8 GWh	Jun 1957	Oct 2025	Wind : 76.4% Solar : 21.9%
Southwestern Bell Telephone	AT&T	St. Louis, MO	112 MWh	Jan 1992	Oct 2025	Distillate Fuel Oil
MMSD Jones Island Wastewater	Milwaukee Metro Sewerage Dist	Milwaukee, WI	75 GWh	Dec 1970	Oct 2025	Natural Gas : 80.6% Landfill Gas : 18.2% Distillate Fuel Oil : 1.2%
City of Peru Plank Road Generating Station	City of Peru - (IL)	Peru, IL	18 GWh	Sep 1968	Oct 2025	Water : 98.6% Distillate Fuel Oil : 1.1%
Weston	Wisconsin Public Service Corp	Rothschild, WI	5 TWh	Nov 1954	Oct 2025	Subbituminous Coal : 99.4% Natural Gas : 0.6%
Rantoul	Village of Rantoul - (IL)	Rantoul, IL	203 MWh	Dec 1950	Oct 2025	Distillate Fuel Oil
Dallman	City of Springfield - (IL)	Springfield, IL	817 GWh	May 1968	Oct 2025	Bituminous Coal : 99.5%
Sullivan (IL)	City of Sullivan - (IL)	Sullivan, IL	245 MWh	May 1946	Oct 2025	Distillate Fuel Oil
RS Cogen	Westlake 2 US LLC	Lake Charles, LA	3 TWh	Nov 2002	Oct 2025	Natural Gas
Marion	Southern Illinois Power Coop	Marion, IL	751 GWh	May 1963	Oct 2025	Bituminous Coal : 87.7% Natural Gas : 12.2%
Harding Street	AES Indiana	Indianapolis, IN	3 TWh	May 1958	Oct 2025	Natural Gas
Eagle Valley (IN)	AES Indiana	Martinsville, IN	6 TWh	Nov 1951	Oct 2025	Natural Gas
CC Perry K	Citizens Thermal Energy	Indianapolis, IN	8 GWh	Dec 1924	Oct 2025	Natural Gas
AES Petersburg	AES Indiana	Petersburg, IN	5 TWh	May 1967	Oct 2025	Bituminous Coal : 99.8%
Michigan City	Northern Indiana Pub Serv Co	Michigan City, IN	1 TWh	Apr 1974	Oct 2025	Subbituminous Coal : 77.7% Bituminous Coal : 20.3% Natural Gas : 2.0%
Tatanka Wind Power LLC	Acciona Wind Energy USA LLC	Ashley, ND	479 GWh	Dec 2007	Oct 2025	Wind
Thomson Reuters Campus Bldg A-D	Thomson Corp	Eagan, MN	6 GWh	Mar 1999	Oct 2025	Distillate Fuel Oil
Cayuga	Duke Energy Indiana, LLC	Cayuga, IN	4 TWh	Sep 1970	Oct 2025	Bituminous Coal : 99.5%
Edwardsport	Duke Energy Indiana, LLC	Edwardsport, IN	4 TWh	May 2013	Oct 2025	Coal-Derived Synthesis Gas : 46.6% Natural Gas : 44.4% Bituminous Coal : 9.1%
Pomeroy Wind Farm	MidAmerican Energy Co	Fonda, IA	966 GWh	Nov 2007	Oct 2025	Wind
Spiritwood Station	Great River Energy	Spiritwood, ND	161 GWh	Oct 2014	Oct 2025	Natural Gas : 58.4% Refined Coal : 41.6%

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#60	Alcoa Power Generating, Inc. - Yadkin Division	643.5 GWh	4
#27	Associated Electric Cooperative, Inc.	23.9 TWh	47
#13	Duke Energy Carolinas	111.6 TWh	565
#52	Duke Energy Progress West	4.3 TWh	10
#24	Louisville Gas and Electric Company and Kentucky Utilities Company	34.2 TWh	25
#1	PJM Interconnection, LLC	872.9 TWh	2,465
#6	Southern Company Services, Inc. - Trans	249.9 TWh	417
#5	Southwest Power Pool	300.6 TWh	835
#51	Southwestern Power Administration	5.0 TWh	34
#9	Tennessee Valley Authority	161.0 TWh	204

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#1	PJM Interconnection, LLC	872.9 TWh	2,465
#2	Midcontinent Independent System Operator, Inc.	656.9 TWh	2,831
#3	Electric Reliability Council of Texas, Inc.	484.7 TWh	1,313
#5	Southwest Power Pool	300.6 TWh	835
#6	Southern Company Services, Inc. - Trans	249.9 TWh	417
#7	California Independent System Operator	184.8 TWh	2,075
#9	Tennessee Valley Authority	161.0 TWh	204
#10	Florida Power & Light Co.	149.6 TWh	187
#12	New York Independent System Operator	132.6 TWh	1,211
#13	Duke Energy Carolinas	111.6 TWh	565