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
Labadie	Union Electric Co - (MO)	Labadie, MO	17 TWh	May 1970	Dec 2025	Subbituminous Coal : 99.9%
Monroe (MI)	DTE Electric Company	Monroe, MI	16 TWh	Oct 1969	Dec 2025	Subbituminous Coal : 74.7% Bituminous Coal : 16.0% Petroleum Coke : 9.1%
Arkansas Nuclear One	Entergy Arkansas LLC	Russellville, AR	15 TWh	Nov 1974	Dec 2025	Nuclear
Prairie State Generating Station	Prairie State Generating Co LLC	Marissa, IL	12 TWh	May 2012	Dec 2025	Bituminous Coal : 99.8%
Grand Gulf	System Energy Resources, Inc	Port Gibson, MS	11 TWh	Jun 1985	Dec 2025	Nuclear
Gibson	Duke Energy Indiana, LLC	Owensville, IN	11 TWh	Mar 1975	Dec 2025	Bituminous Coal : 99.6%
Point Beach Nuclear Plant	NextEra Energy Point Beach LLC	Two Rivers, WI	10 TWh	May 1969	Dec 2025	Nuclear
Union Power Station	Entergy Arkansas LLC	El Dorado, AR	10 TWh	Dec 2002	Dec 2025	Natural Gas
Fermi	DTE Electric Company	Frenchtown Twp, MI	10 TWh	Mar 1966	Dec 2025	Nuclear
Midland Cogeneration Venture	Midland Cogeneration Venture	Midland, MI	10 TWh	May 1989	Dec 2025	Natural Gas
Prairie Island	Northern States Power Co - Minnesota	Welch, MN	9 TWh	Jan 1974	Dec 2025	Nuclear
Waterford 3	Entergy Louisiana LLC	Killona, LA	8 TWh	Aug 1985	Dec 2025	Nuclear
Blue Water Energy Center	DTE Electric Company	East China, MI	8 TWh	May 2022	Dec 2025	Natural Gas
Clinton Power Station	Constellation Nuclear	Clinton, IL	8 TWh	Oct 1987	Dec 2025	Nuclear
Coal Creek	Rainbow Energy Center	Underwood, ND	8 TWh	May 1979	Dec 2025	Refined Coal : 99.9%
Nine Mile Point	Entergy Louisiana LLC	Westwego, LA	8 TWh	Oct 1955	Dec 2025	Natural Gas
J H Campbell	Consumers Energy Co - (MI)	West Olive, MI	8 TWh	Sep 1962	Dec 2025	Subbituminous Coal : 99.8%
Elm Road Generating Station	Wisconsin Electric Power Co	Oak Creek, WI	7 TWh	Jan 2010	Dec 2025	Subbituminous Coal : 78.4% Bituminous Coal : 18.7% Natural Gas : 2.9%
Sherburne County	Northern States Power Co - Minnesota	Becker, MN	7 TWh	Mar 1976	Dec 2025	Subbituminous Coal : 99.8%
Port Washington Generating Station	Wisconsin Electric Power Co	Port Washington, WI	7 TWh	Jun 2005	Dec 2025	Natural Gas
Callaway	Union Electric Co - (MO)	Fulton, MO	7 TWh	Nov 1984	Dec 2025	Nuclear
River Bend	Entergy Louisiana LLC	St. Francisville, LA	7 TWh	May 1986	Dec 2025	Nuclear
Lake Charles Power	Entergy Louisiana LLC	West Lake, LA	7 TWh	Feb 2020	Dec 2025	Natural Gas
Independence Steam Electric Station	Entergy Arkansas LLC	Newark, AR	7 TWh	Dec 1982	Dec 2025	Subbituminous Coal : 99.8%
Baldwin Energy Complex	Dynegy Midwest Generation Inc	Baldwin, IL	7 TWh	Jun 1970	Dec 2025	Subbituminous Coal : 99.8%
Belle River	DTE Electric Company	China Twp, MI	6 TWh	Oct 1981	Dec 2025	Subbituminous Coal : 93.1% Natural Gas : 6.5%
Walter Scott Jr Energy Center	MidAmerican Energy Co	Council Bluffs, IA	6 TWh	Feb 1954	Dec 2025	Subbituminous Coal : 99.1% Distillate Fuel Oil : 0.8%
Columbia (WI)	Wisconsin Power & Light Co	Pardeville, WI	6 TWh	Apr 1975	Dec 2025	Subbituminous Coal : 99.9%
Montgomery County	Entergy Texas Inc.	Willis, TX	6 TWh	Dec 2020	Dec 2025	Natural Gas
Taft Cogeneration Facility	Occidental Chemical Corporation	Hahnville, LA	6 TWh	Jun 2002	Dec 2025	Natural Gas : 98.8% Other Gas : 1.2%
Acadia Energy Center	Cleco Power LLC	Eunice, LA	6 TWh	Jun 2002	Dec 2025	Natural Gas
Clay Boswell	ALLETE, Inc.	Cohasset, MN	6 TWh	Jun 1958	Dec 2025	Subbituminous Coal : 99.8%
Plaquemine Cogeneration Plant	Dow Chemical Co	Plaquemine, LA	6 TWh	Feb 2004	Dec 2025	Natural Gas : 97.5% Other Gas : 2.5%
Eagle Valley (IN)	AES Indiana	Martinsville, IN	6 TWh	Nov 1951	Dec 2025	Natural Gas
St. Charles Power Station (LA)	Entergy Louisiana LLC	La Place, LA	6 TWh	Apr 2019	Dec 2025	Natural Gas
AES Petersburg	AES Indiana	Petersburg, IN	5 TWh	May 1967	Dec 2025	Bituminous Coal : 99.8%
Zeeland Generating Station	Consumers Energy Co - (MI)	Zeeland, MI	5 TWh	May 2001	Dec 2025	Natural Gas
Weston	Wisconsin Public Service Corp	Rothschild, WI	5 TWh	Nov 1954	Dec 2025	Subbituminous Coal : 99.4% Natural Gas : 0.6%
Merom	Hallador Power Company, LLC	Sullivan, IN	5 TWh	Jan 1982	Dec 2025	Bituminous Coal : 99.7%
Monticello Nuclear Facility	Northern States Power Co - Minnesota	Monticello, MN	5 TWh	May 1971	Dec 2025	Nuclear
Cottonwood Energy Company LP	NRG Cottonwood Tenant LLC	Deweyville, TX	5 TWh	Jun 2003	Dec 2025	Natural Gas
Louisa	MidAmerican Energy Co	Muscatine, IA	5 TWh	Sep 1983	Dec 2025	Subbituminous Coal : 99.4% Natural Gas : 0.6%
ExxonMobil Beaumont Refinery	ExxonMobil Oil Corp	Beaumont, TX	4 TWh	Dec 1965	Dec 2025	Natural Gas : 96.8% Other Gas : 3.2%
West Riverside Energy Center	Wisconsin Power & Light Co	Beloit, WI	4 TWh	Apr 2020	Dec 2025	Natural Gas : 99.9%
Cayuga	Duke Energy Indiana, LLC	Cayuga, IN	4 TWh	Sep 1970	Dec 2025	Bituminous Coal : 99.6%
Sioux	Union Electric Co - (MO)	West Alton, MO	4 TWh	Apr 1967	Dec 2025	Subbituminous Coal : 75.2% Bituminous Coal : 24.7%
Plum Point Energy Station	NRG Energy Services - Plum Point	Osceola, AR	4 TWh	Aug 2010	Nov 2025	Subbituminous Coal : 99.9%
Ouachita	Entergy Louisiana LLC	Sterlington, LA	4 TWh	Jul 2002	Dec 2025	Natural Gas
White Bluff	Entergy Arkansas LLC	Redfield, AR	4 TWh	Jul 1980	Dec 2025	Subbituminous Coal : 99.5%
Sugar Creek Power	Northern Indiana Pub Serv Co	West Terre Haute, IN	4 TWh	May 2002	Dec 2025	Natural Gas
Perryville Power Station	Entergy Louisiana LLC	Sterlington, LA	4 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%
Milton R Young	Minnkota Power Coop, Inc	Center, ND	4 TWh	Sep 1970	Dec 2025	Lignite Coal : 99.8%
Newton	Illinois Power Generating Co	Newton, IL	4 TWh	Oct 1977	Dec 2025	Subbituminous Coal : 99.9%
Jack Fusco Energy Center	Brazos Valley Energy	Thompsons, TX	4 TWh	Apr 2003	Dec 2025	Natural Gas
Magnet Cove	Arkansas Electric Coop Corp	Malvern, AR	4 TWh	Jun 2005	Dec 2025	Natural Gas
Fox Energy Center	Wisconsin Public Service Corp	Wrightstown, WI	4 TWh	May 2005	Dec 2025	Natural Gas
Edwardsport	Duke Energy Indiana, LLC	Edwardsport, IN	4 TWh	May 2013	Dec 2025	Natural Gas : 47.8% Coal-Derived Synthesis Gas : 43.4% Bituminous Coal : 8.8%
Sabine	Entergy Texas Inc.	Orange, TX	3 TWh	Dec 1961	Dec 2025	Natural Gas
Harding Street	AES Indiana	Indianapolis, IN	3 TWh	May 1958	Dec 2025	Natural Gas
Riverside Energy Center	Wisconsin Power & Light Co	Beloit, WI	3 TWh	May 2004	Dec 2025	Natural Gas
Coughlin Power Station	Cleco Power LLC	St Landry, LA	3 TWh	Mar 1961	Dec 2025	Natural Gas
Marshalltown Generating Station	Interstate Power and Light Co	Marshalltown, IA	3 TWh	Mar 2017	Dec 2025	Natural Gas : 99.9%
Carville Energy LLC	Carville Energy LLC	St Gabriel, LA	3 TWh	May 2003	Dec 2025	Natural Gas
High Bridge	Northern States Power Co - Minnesota	St. Paul, MN	3 TWh	Apr 2008	Dec 2025	Natural Gas
Warrick	AGC Division of APGI Inc	Newburgh, IN	3 TWh	Mar 1960	Dec 2025	Bituminous Coal : 98.3% Natural Gas : 1.7%
Ottumwa	Interstate Power and Light Co	Ottumwa, IA	3 TWh	Apr 1981	Dec 2025	Subbituminous Coal : 99.7%
Sabine River Operations	The Dow Chemical Company	Orange, TX	3 TWh	Dec 1947	Dec 2025	Natural Gas : 99.4% Other Gas : 0.6%
R D Morrow	Cooperative Energy	Purvis, MS	3 TWh	Mar 1978	Dec 2025	Natural Gas
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%
Whiting Clean Energy	BP Alternative Energy	Whiting, IN	3 TWh	Mar 2002	Dec 2025	Natural Gas
RS Cogen	Westlake 2 US LLC	Lake Charles, LA	3 TWh	Nov 2002	Dec 2025	Natural Gas
Louisiana 1	Entergy Louisiana LLC	Baton Rouge, LA	3 TWh	Sep 1951	Dec 2025	Natural Gas : 72.9% Other Gas : 27.1%
Mankato Energy Center	MEC Holdings, LLC	Mankato, MN	3 TWh	Jun 2006	Dec 2024	Natural Gas
Big Cajun 2	Louisiana Generating LLC	New Roads, LA	3 TWh	Jun 1981	Dec 2025	Subbituminous Coal : 74.3% Natural Gas : 25.7%
Hot Spring Generating Facility	Entergy Arkansas LLC	Malvern, AR	3 TWh	May 2002	Dec 2025	Natural Gas
Emery Station	Interstate Power and Light Co	Clear Lake, IA	2 TWh	Apr 2004	Dec 2025	Natural Gas
D B Wilson	Big Rivers Electric Corp	Centertown, KY	2 TWh	Aug 1984	Dec 2025	Bituminous Coal : 99.3% Distillate Fuel Oil : 0.7%
Black Dog	Northern States Power Co - Minnesota	Burnsville, MN	2 TWh	Sep 1954	Dec 2024	Natural Gas
Attala	Entergy Mississippi LLC	Sallis, MS	2 TWh	Feb 2001	Dec 2025	Natural Gas
Greater Des Moines	MidAmerican Energy Co	Pleasant Hill, IA	2 TWh	Apr 2003	Dec 2024	Natural Gas
Coyote	Otter Tail Power Co	Beulah, ND	2 TWh	Apr 1981	Dec 2025	Lignite Coal : 99.7%
South Oak Creek	Wisconsin Electric Power Co	Oak Creek, WI	2 TWh	Nov 1959	Dec 2025	Subbituminous Coal : 99.6%
Big Stone	Otter Tail Power Co	Big Stone City, SD	2 TWh	Apr 1975	Dec 2025	Subbituminous Coal : 99.8%
Edgewater	Wisconsin Power & Light Co	Sheboygan, WI	2 TWh	Jun 1951	Dec 2025	Subbituminous Coal : 99.9%
R S Nelson	Entergy Louisiana LLC	Westlake, LA	2 TWh	Jan 1959	Dec 2025	Subbituminous Coal : 99.5%
Jackson Generating Station	Consumers Energy Co - (MI)	Jackson, MI	2 TWh	Jun 2002	Dec 2025	Natural Gas
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%
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%
Hinds Energy Facility	Entergy Mississippi LLC	Jackson, MS	2 TWh	Apr 2001	Dec 2025	Natural Gas
Lewis Creek	Entergy Texas Inc.	Willis, TX	2 TWh	Nov 1970	Dec 2025	Natural Gas
George Neal South	MidAmerican Energy Co	Salix, IA	2 TWh	Jun 1979	Dec 2025	Subbituminous Coal : 99.0% Distillate Fuel Oil : 1.0%
Orient Wind Farm	MidAmerican Energy Co	Orient, IA	2 TWh	Nov 2018	Dec 2025	Wind
George Neal North	MidAmerican Energy Co	Sergeant Bluff, IA	2 TWh	Apr 1964	Dec 2025	Subbituminous Coal : 99.1% Natural Gas : 0.9%
Noblesville	Duke Energy Indiana, LLC	Noblesville, IN	2 TWh	Aug 1950	Dec 2024	Natural Gas
Moselle	Cooperative Energy	Moselle, MS	2 TWh	Jul 1970	Dec 2025	Natural Gas
Holland Energy Facility	NAES Corporation - (WA)	Beecher City, IL	2 TWh	Aug 2002	Dec 2025	Natural Gas
Motiva Enterprises Port Arthur Refinery	Motiva Enterprises LLC	Port Arthur, TX	2 TWh	May 1957	Dec 2025	Natural Gas : 91.2% Other Gas : 8.8%
Rolling Hills Wind Farm	MidAmerican Energy Co	Massena, IA	2 TWh	Nov 2011	Dec 2025	Wind
Highland Wind Project (IA)	MidAmerican Energy Co	Primghar, IA	2 TWh	May 2015	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