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	Apr 2026
Annual Generation	664.4 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 \| 36.9% Coal \| 27.6% Wind \| 14.8% Nuclear \| 13.6% Solar \| 5% 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
Newton	Illinois Power Generating Co	Newton, IL	4 TWh	Oct 1977	Feb 2026	Subbituminous Coal : 99.9%
Milton R Young	Minnkota Power Coop, Inc	Center, ND	4 TWh	Sep 1970	Feb 2026	Lignite Coal : 99.8%
Perryville Power Station	Entergy Louisiana LLC	Sterlington, LA	4 TWh	May 2001	Jan 2026	Natural Gas
Harding Street	AES Indiana	Indianapolis, IN	4 TWh	May 1958	Feb 2026	Natural Gas
Sioux	Union Electric Co - (MO)	West Alton, MO	4 TWh	Apr 1967	Feb 2026	Subbituminous Coal : 77.4% Bituminous Coal : 22.5%
Jack Fusco Energy Center	Brazos Valley Energy	Thompsons, TX	4 TWh	Apr 2003	Feb 2026	Natural Gas
Ouachita	Entergy Louisiana LLC	Sterlington, LA	4 TWh	Jul 2002	Feb 2026	Natural Gas
Plum Point Energy Station	NRG Energy Services - Plum Point	Osceola, AR	4 TWh	Aug 2010	Nov 2025	Subbituminous Coal : 99.9%
Cayuga	Duke Energy Indiana, LLC	Cayuga, IN	4 TWh	Sep 1970	Jan 2026	Bituminous Coal : 99.3%
Dearborn Industrial Generation	Dearborn Industrial Gen Inc	Dearborn, MI	4 TWh	May 1999	Feb 2026	Natural Gas : 95.2% Blast Furnace Gas : 4.8%
West Riverside Energy Center	Wisconsin Power & Light Co	Beloit, WI	4 TWh	Apr 2020	Feb 2026	Natural Gas : 99.9%
ExxonMobil Beaumont Refinery	ExxonMobil Oil Corp	Beaumont, TX	4 TWh	Dec 1965	Feb 2026	Natural Gas : 96.7% Other Gas : 3.3%
Cottonwood Energy Company LP	NRG Cottonwood Tenant LLC	Deweyville, TX	4 TWh	Jun 2003	Feb 2026	Natural Gas
Merom	Hallador Power Company, LLC	Sullivan, IN	4 TWh	Jan 1982	Feb 2026	Bituminous Coal : 99.6%
Monticello Nuclear Facility	Northern States Power Co - Minnesota	Monticello, MN	5 TWh	May 1971	Feb 2026	Nuclear
Louisa	MidAmerican Energy Co	Muscatine, IA	5 TWh	Sep 1983	Feb 2026	Subbituminous Coal : 99.4% Natural Gas : 0.6%
Weston	Wisconsin Public Service Corp	Rothschild, WI	5 TWh	Nov 1954	Feb 2026	Subbituminous Coal : 99.4% Natural Gas : 0.6%
AES Petersburg	AES Indiana	Petersburg, IN	5 TWh	May 1967	Feb 2026	Bituminous Coal : 99.8%
Zeeland Generating Station	Consumers Energy Co - (MI)	Zeeland, MI	5 TWh	May 2001	Feb 2026	Natural Gas
St. Charles Power Station (LA)	Entergy Louisiana LLC	La Place, LA	5 TWh	Apr 2019	Jan 2026	Natural Gas
Belle River	DTE Electric Company	China Twp, MI	5 TWh	Oct 1981	Feb 2026	Subbituminous Coal : 90.5% Natural Gas : 9.0%
Eagle Valley (IN)	AES Indiana	Martinsville, IN	6 TWh	Nov 1951	Feb 2026	Natural Gas
Plaquemine Cogeneration Plant	Dow Chemical Co	Plaquemine, LA	6 TWh	Feb 2004	Feb 2026	Natural Gas : 97.4% Other Gas : 2.6%
Taft Cogeneration Facility	Occidental Chemical Corporation	Hahnville, LA	6 TWh	Jun 2002	Feb 2026	Natural Gas : 98.3% Other Gas : 1.7%
Columbia (WI)	Wisconsin Power & Light Co	Pardeville, WI	6 TWh	Apr 1975	Feb 2026	Subbituminous Coal : 99.9%
Montgomery County	Entergy Texas Inc.	Willis, TX	6 TWh	Dec 2020	Feb 2026	Natural Gas
Clay Boswell	ALLETE, Inc.	Cohasset, MN	6 TWh	Jun 1958	Feb 2026	Subbituminous Coal : 99.8%
Acadia Energy Center	Cleco Power LLC	Eunice, LA	6 TWh	Jun 2002	Feb 2026	Natural Gas
Baldwin Energy Complex	Dynegy Midwest Generation Inc	Baldwin, IL	6 TWh	Jun 1970	Feb 2026	Subbituminous Coal : 99.7%
Walter Scott Jr Energy Center	MidAmerican Energy Co	Council Bluffs, IA	6 TWh	Feb 1954	Feb 2026	Subbituminous Coal : 99.2% Distillate Fuel Oil : 0.7%
J H Campbell	Consumers Energy Co - (MI)	West Olive, MI	7 TWh	Sep 1962	Feb 2026	Subbituminous Coal : 99.7%
Lake Charles Power	Entergy Louisiana LLC	West Lake, LA	7 TWh	Feb 2020	Feb 2026	Natural Gas
Sherburne County	Northern States Power Co - Minnesota	Becker, MN	7 TWh	Mar 1976	Feb 2026	Subbituminous Coal : 99.8%
Independence Steam Electric Station	Entergy Arkansas LLC	Newark, AR	7 TWh	Dec 1982	Feb 2026	Subbituminous Coal : 99.8%
Callaway	Union Electric Co - (MO)	Fulton, MO	7 TWh	Nov 1984	Feb 2026	Nuclear
River Bend	Entergy Louisiana LLC	St. Francisville, LA	7 TWh	May 1986	Feb 2026	Nuclear
Port Washington Generating Station	Wisconsin Electric Power Co	Port Washington, WI	7 TWh	Jun 2005	Feb 2026	Natural Gas
Elm Road Generating Station	Wisconsin Electric Power Co	Oak Creek, WI	7 TWh	Jan 2010	Feb 2026	Subbituminous Coal : 80.6% Bituminous Coal : 16.4% Natural Gas : 3.0%
Nine Mile Point	Entergy Louisiana LLC	Westwego, LA	8 TWh	Oct 1955	Feb 2026	Natural Gas : 99.3% Distillate Fuel Oil : 0.7%
Coal Creek	Rainbow Energy Center	Underwood, ND	8 TWh	May 1979	Feb 2026	Refined Coal : 99.9%
Blue Water Energy Center	DTE Electric Company	East China, MI	8 TWh	May 2022	Feb 2026	Natural Gas
Clinton Power Station	Constellation Nuclear	Clinton, IL	8 TWh	Oct 1987	Feb 2026	Nuclear
Waterford 3	Entergy Louisiana LLC	Killona, LA	9 TWh	Aug 1985	Feb 2026	Nuclear
Prairie Island	Northern States Power Co - Minnesota	Welch, MN	9 TWh	Jan 1974	Feb 2026	Nuclear
Midland Cogeneration Venture	Midland Cogeneration Venture	Midland, MI	10 TWh	May 1989	Feb 2026	Natural Gas
Fermi	DTE Electric Company	Frenchtown Twp, MI	10 TWh	Mar 1966	Feb 2026	Nuclear
Point Beach Nuclear Plant	NextEra Energy Point Beach LLC	Two Rivers, WI	10 TWh	May 1969	Feb 2026	Nuclear
Gibson	Duke Energy Indiana, LLC	Owensville, IN	10 TWh	Mar 1975	Feb 2026	Bituminous Coal : 99.6%
Union Power Station	Entergy Arkansas LLC	El Dorado, AR	11 TWh	Dec 2002	Feb 2026	Natural Gas
Grand Gulf	System Energy Resources, Inc	Port Gibson, MS	11 TWh	Jun 1985	Feb 2026	Nuclear
Prairie State Generating Station	Prairie State Generating Co LLC	Marissa, IL	12 TWh	May 2012	Feb 2026	Bituminous Coal : 99.8%
Arkansas Nuclear One	Entergy Arkansas LLC	Russellville, AR	15 TWh	Nov 1974	Feb 2026	Nuclear
Monroe (MI)	DTE Electric Company	Monroe, MI	16 TWh	Oct 1969	Feb 2026	Subbituminous Coal : 74.7% Bituminous Coal : 16.2% Petroleum Coke : 8.9%
Labadie	Union Electric Co - (MO)	Labadie, MO	17 TWh	May 1970	Feb 2026	Subbituminous Coal

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#60	Alcoa Power Generating, Inc. - Yadkin Division	582.3 GWh	4
#27	Associated Electric Cooperative, Inc.	23.9 TWh	47
#13	Duke Energy Carolinas	112.5 TWh	565
#52	Duke Energy Progress West	4.4 TWh	10
#23	Louisville Gas and Electric Company and Kentucky Utilities Company	34.0 TWh	25
#1	PJM Interconnection, LLC	881.5 TWh	2,465
#6	Southern Company Services, Inc. - Trans	250.9 TWh	417
#5	Southwest Power Pool	302.9 TWh	835
#51	Southwestern Power Administration	4.6 TWh	34
#9	Tennessee Valley Authority	163.1 TWh	204

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#1	PJM Interconnection, LLC	881.5 TWh	2,465
#2	Midcontinent Independent System Operator, Inc.	664.4 TWh	2,831
#3	Electric Reliability Council of Texas, Inc.	488.2 TWh	1,313
#5	Southwest Power Pool	302.9 TWh	835
#6	Southern Company Services, Inc. - Trans	250.9 TWh	417
#7	California Independent System Operator	176.8 TWh	2,075
#9	Tennessee Valley Authority	163.1 TWh	204
#10	Florida Power & Light Co.	150.9 TWh	187
#12	New York Independent System Operator	134.4 TWh	1,211
#13	Duke Energy Carolinas	112.5 TWh	565