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	663.6 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 \| 27.8% 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
South Oak Creek	Wisconsin Electric Power Co	Oak Creek, WI	2 TWh	Nov 1959	Jan 2026	Subbituminous Coal : 99.6%
Dan E Karn	Consumers Energy Co - (MI)	Essexville, MI	82 GWh	Oct 1959	Jan 2026	Natural Gas : 93.3% Residual Fuel Oil : 6.7%
Independence Steam Electric Station	Entergy Arkansas LLC	Newark, AR	7 TWh	Dec 1982	Jan 2026	Subbituminous Coal : 99.8%
Degray	USCE -Vickburg District	Arkadelphia, AR	197 GWh	Jan 1972	Jan 2026	Water
High Bridge	Northern States Power Co - Minnesota	St. Paul, MN	3 TWh	Apr 2008	Jan 2026	Natural Gas
George Neal South	MidAmerican Energy Co	Salix, IA	2 TWh	Jun 1979	Jan 2026	Subbituminous Coal : 99.1% Distillate Fuel Oil : 0.9%
Clinton Power Station	Constellation Nuclear	Clinton, IL	8 TWh	Oct 1987	Jan 2026	Nuclear
Big Stone	Otter Tail Power Co	Big Stone City, SD	2 TWh	Apr 1975	Jan 2026	Subbituminous Coal : 99.8%
Baldwin Energy Complex	Dynegy Midwest Generation Inc	Baldwin, IL	6 TWh	Jun 1970	Jan 2026	Subbituminous Coal : 99.8%
John P Madgett	Dairyland Power Coop	Alma, WI	1 TWh	Oct 1979	Jan 2026	Subbituminous Coal : 99.6%
St Clair	DTE Electric Company	East China Twp, MI	7 GWh	Jul 1953	Jan 2026	Distillate Fuel Oil : 51.9% Natural Gas : 48.1%
Ottumwa	Interstate Power and Light Co	Ottumwa, IA	3 TWh	Apr 1981	Jan 2026	Subbituminous Coal : 99.7%
T B Simon Power Plant	Michigan State University	East Lansing, MI	252 GWh	Nov 1965	Jan 2026	Natural Gas
Coyote	Otter Tail Power Co	Beulah, ND	2 TWh	Apr 1981	Jan 2026	Lignite Coal : 99.7%
Warrick	AGC Division of APGI Inc	Newburgh, IN	3 TWh	Mar 1960	Jan 2026	Bituminous Coal : 98.3% Natural Gas : 1.7%
Moselle	Cooperative Energy	Moselle, MS	2 TWh	Jul 1970	Jan 2026	Natural Gas
Wilmarth	Northern States Power Co - Minnesota	Mankato, MN	98 GWh	Aug 1948	Jan 2026	Non-biogenic Municipal Solid Waste : 54.0% Biogenic Municipal Solid Waste : 44.2% Natural Gas : 1.7%
Edgewater	Wisconsin Power & Light Co	Sheboygan, WI	2 TWh	Jun 1951	Jan 2026	Subbituminous Coal : 99.9%
Geneseo	City of Geneseo - (IL)	Geneseo, IL	8 GWh	Jun 1957	Jan 2026	Wind : 74.6% Solar : 20.7% Distillate Fuel Oil : 4.7%
Greenwood (MI)	DTE Electric Company	Avoca, MI	1 TWh	Jun 1979	Jan 2026	Natural Gas
Valley (WI)	Wisconsin Electric Power Co	Milwaukee, WI	372 GWh	May 1968	Jan 2026	Natural Gas
City of Peru Plank Road Generating Station	City of Peru - (IL)	Peru, IL	18 GWh	Sep 1968	Jan 2026	Water : 97.8% Distillate Fuel Oil : 1.8%
Riverside (MN)	Northern States Power Co - Minnesota	Minneapolis, MN	174 GWh	Mar 1987	Jan 2026	Natural Gas
Rantoul	Village of Rantoul - (IL)	Rantoul, IL	250 MWh	Dec 1950	Jan 2026	Distillate Fuel Oil
R D Green	Big Rivers Electric Corp	Robards, KY	691 GWh	Nov 1979	Jan 2026	Natural Gas
Dallman	City of Springfield - (IL)	Springfield, IL	880 GWh	May 1968	Jan 2026	Bituminous Coal : 99.7%
Arkansas Nuclear One	Entergy Arkansas LLC	Russellville, AR	15 TWh	Nov 1974	Jan 2026	Nuclear
Sullivan (IL)	City of Sullivan - (IL)	Sullivan, IL	334 MWh	May 1946	Jan 2026	Distillate Fuel Oil
Merom	Hallador Power Company, LLC	Sullivan, IN	5 TWh	Jan 1982	Jan 2026	Bituminous Coal : 99.7%
Marion	Southern Illinois Power Coop	Marion, IL	775 GWh	May 1963	Jan 2026	Bituminous Coal : 86.9% Natural Gas : 12.6% Distillate Fuel Oil : 0.5%
Harding Street	AES Indiana	Indianapolis, IN	4 TWh	May 1958	Jan 2026	Natural Gas
Eagle Valley (IN)	AES Indiana	Martinsville, IN	6 TWh	Nov 1951	Jan 2026	Natural Gas
CC Perry K	Citizens Thermal Energy	Indianapolis, IN	11 GWh	Dec 1924	Jan 2026	Natural Gas
AES Petersburg	AES Indiana	Petersburg, IN	5 TWh	May 1967	Jan 2026	Bituminous Coal : 99.8%
Michigan City	Northern Indiana Pub Serv Co	Michigan City, IN	2 TWh	Apr 1974	Jan 2026	Subbituminous Coal : 78.2% Bituminous Coal : 20.4% Natural Gas : 1.3%
Wyandotte	Wyandotte Municipal Serv Comm	Wyandotte, MI	110 MWh	Dec 1947	Jan 2026	Distillate Fuel Oil
Manitowoc	Manitowoc Public Utilities	Manitowoc, WI	172 GWh	May 1955	Jan 2026	Wood/Wood Waste Solids : 90.9% Petroleum Coke : 5.1% Bituminous Coal : 3.6%
Cayuga	Duke Energy Indiana, LLC	Cayuga, IN	4 TWh	Sep 1970	Jan 2026	Bituminous Coal : 99.3%
Edwardsport	Duke Energy Indiana, LLC	Edwardsport, IN	4 TWh	May 2013	Jan 2026	Natural Gas : 50.1% Coal-Derived Synthesis Gas : 41.6% Bituminous Coal : 8.3%
Port Washington Generating Station	Wisconsin Electric Power Co	Port Washington, WI	7 TWh	Jun 2005	Jan 2026	Natural Gas
Lewis & Clark	Montana-Dakota Utilities Co	Richland, MT	12 GWh	Sep 1958	Jan 2026	Natural Gas
F B Culley	Southern Indiana Gas & Elec Co	Newburgh, IN	924 GWh	Nov 1966	Jan 2026	Bituminous Coal : 97.1% Natural Gas : 2.9%
Carpenter Wind Farm LLC	EDP Renewables North America LLC	Remington, IN	139 GWh	-	Jan 2026	Wind
Iowa Hydro LLC	Renewable World Energies LLC	Maquoketa, IA	6 GWh	Dec 1923	Jan 2026	Water
Pulliam	Wisconsin Public Service Corp	Green Bay, WI	117 GWh	Aug 1949	Jan 2026	Natural Gas
Prairie Creek	Interstate Power and Light Co	Cedar Rapids, IA	92 GWh	Sep 1958	Jan 2026	Subbituminous Coal : 65.7% Natural Gas : 34.3%
Wilmot	DTE Electric Company	Kingston Twp, MI	2 GWh	Nov 1968	Jan 2026	Distillate Fuel Oil
Walter Scott Jr Energy Center	MidAmerican Energy Co	Council Bluffs, IA	6 TWh	Feb 1954	Jan 2026	Subbituminous Coal : 99.1% Distillate Fuel Oil : 0.7%
State Farm	State Farm Insurance	Bloomington, IL	26 MWh	Sep 1996	Jan 2026	Distillate Fuel Oil
George Neal North	MidAmerican Energy Co	Sergeant Bluff, IA	2 TWh	Apr 1964	Jan 2026	Subbituminous Coal : 99.0% Natural Gas : 1.0%
D B Wilson	Big Rivers Electric Corp	Centertown, KY	2 TWh	Aug 1984	Jan 2026	Bituminous Coal : 99.2% Distillate Fuel Oil : 0.8%
Burlington (IA)	Interstate Power and Light Co	Burlington, IA	21 GWh	May 1968	Jan 2026	Natural Gas
Louisa	MidAmerican Energy Co	Muscatine, IA	5 TWh	Sep 1983	Jan 2026	Subbituminous Coal : 99.4% Natural Gas : 0.6%
Brame Energy Center	Cleco Power LLC	Lena, LA	3 TWh	May 1975	Jan 2026	Subbituminous Coal : 48.1% Natural Gas : 33.7% Petroleum Coke : 12.9% Bituminous Coal : 5.4%
CF Industries Yazoo City Complex	CF Industries Nitrogen LLC	Yazoo City, MS	133 GWh	Jun 1984	Jan 2026	Natural Gas
Covanta Hennepin Energy	Covanta Energy Co	Minneapolis, MN	169 GWh	Sep 1989	Jan 2026	Non-biogenic Municipal Solid Waste : 54.5% Biogenic Municipal Solid Waste : 44.6% Natural Gas : 0.9%
Emery Station	Interstate Power and Light Co	Clear Lake, IA	2 TWh	Apr 2004	Jan 2026	Natural Gas
Escanaba Mill	Billerud Escanaba LLC	Escanaba, MI	466 GWh	Dec 1968	Jan 2026	Black Liquor : 45.5% Natural Gas : 31.5% Wood/Wood Waste Solids : 22.3% Residual Fuel Oil : 0.6%
Anheuser-Busch St Louis	Anheuser-Busch Inc	St. Louis, MO	41 GWh	Dec 1938	Jan 2026	Natural Gas : 93.3% Other Biomass Gas : 6.7%
Consumer Operations LLC	Georgia-Pacific Consumer Oper. Green Bay LLC	Green Bay, WI	225 GWh	Dec 1953	Jan 2026	Natural Gas
Mosaic Phosphates Uncle Sam	Mosaic Phosphates Co.	Uncle Sam, LA	83 GWh	Dec 1967	Jan 2026	Waste Heat
Columbia (WI)	Wisconsin Power & Light Co	Pardeville, WI	6 TWh	Apr 1975	Jan 2026	Subbituminous Coal : 99.9%
River Bend	Entergy Louisiana LLC	St. Francisville, LA	7 TWh	May 1986	Jan 2026	Nuclear
Monroe (MI)	DTE Electric Company	Monroe, MI	16 TWh	Oct 1969	Jan 2026	Subbituminous Coal : 74.7% Bituminous Coal : 16.1% Petroleum Coke : 9.1%
M L Hibbard	ALLETE, Inc.	Duluth, MN	101 GWh	May 1949	Jan 2026	Wood/Wood Waste Solids : 91.2% Subbituminous Coal : 6.8% Natural Gas : 2.0%
Monticello Nuclear Facility	Northern States Power Co - Minnesota	Monticello, MN	5 TWh	May 1971	Jan 2026	Nuclear
Allen S King	Northern States Power Co - Minnesota	Oak Park Heights, MN	786 GWh	Feb 1958	Jan 2026	Subbituminous Coal : 99.6%
Clay Boswell	ALLETE, Inc.	Cohasset, MN	6 TWh	Jun 1958	Jan 2026	Subbituminous Coal : 99.8%
Fermi	DTE Electric Company	Frenchtown Twp, MI	10 TWh	Mar 1966	Jan 2026	Nuclear
Labadie	Union Electric Co - (MO)	Labadie, MO	17 TWh	May 1970	Jan 2026	Subbituminous Coal
Elk River	Great River Energy	Elk River, MN	140 GWh	Dec 1950	Jan 2026	Natural Gas : 89.8% Distillate Fuel Oil : 10.2%
Red Wing	Northern States Power Co - Minnesota	Red Wing, MN	127 GWh	Sep 1949	Jan 2026	Non-biogenic Municipal Solid Waste : 52.9% Biogenic Municipal Solid Waste : 43.3% Wood/Wood Waste Solids : 3.1% Natural Gas : 0.8%
R M Heskett	Montana-Dakota Utilities Co	Mandan, ND	56 GWh	Oct 1954	Jan 2026	Natural Gas
Milton R Young	Minnkota Power Coop, Inc	Center, ND	4 TWh	Sep 1970	Jan 2026	Lignite Coal : 99.8%
Sioux	Union Electric Co - (MO)	West Alton, MO	4 TWh	Apr 1967	Jan 2026	Subbituminous Coal : 76.8% Bituminous Coal : 23.1%
Prairie Island	Northern States Power Co - Minnesota	Welch, MN	9 TWh	Jan 1974	Jan 2026	Nuclear
J H Campbell	Consumers Energy Co - (MI)	West Olive, MI	7 TWh	Sep 1962	Jan 2026	Subbituminous Coal : 99.8%
Point Beach Nuclear Plant	NextEra Energy Point Beach LLC	Two Rivers, WI	10 TWh	May 1969	Jan 2026	Nuclear
Muscatine Plant #1	Board of Water Electric & Communications	Muscatine, IA	770 GWh	Mar 1958	Jan 2026	Subbituminous Coal : 99.7%
French Island	Northern States Power Co - Minnesota	La Cross, WI	65 GWh	Dec 1939	Jan 2026	Wood/Wood Waste Solids : 43.8% Non-biogenic Municipal Solid Waste : 25.6% Biogenic Municipal Solid Waste : 21.0% Distillate Fuel Oil : 9.3%
New Badger	City of Kaukauna	Kaukauna, WI	44 GWh	Dec 2013	Jan 2026	Water
Little Gypsy	Entergy Louisiana LLC	La Place, LA	795 GWh	Feb 1961	Jan 2026	Natural Gas
White Bluff	Entergy Arkansas LLC	Redfield, AR	4 TWh	Jul 1980	Jan 2026	Subbituminous Coal : 99.5%
Waterford 3	Entergy Louisiana LLC	Killona, LA	8 TWh	Aug 1985	Jan 2026	Nuclear
Weston	Wisconsin Public Service Corp	Rothschild, WI	5 TWh	Nov 1954	Jan 2026	Subbituminous Coal : 99.4% Natural Gas : 0.6%
Sabine	Entergy Texas Inc.	Orange, TX	3 TWh	Dec 1961	Jan 2026	Natural Gas
R D Morrow	Cooperative Energy	Purvis, MS	3 TWh	Mar 1978	Jan 2026	Natural Gas
Big Cajun 2	Louisiana Generating LLC	New Roads, LA	2 TWh	Jun 1981	Jan 2026	Subbituminous Coal : 72.5% Natural Gas : 27.5%
Coal Creek	Rainbow Energy Center	Underwood, ND	8 TWh	May 1979	Jan 2026	Refined Coal : 99.9%
R M Schahfer	Northern Indiana Pub Serv Co	Wheatfield, IN	1 TWh	Nov 1976	Jan 2026	Bituminous Coal : 93.8% Natural Gas : 6.2%
Gibson	Duke Energy Indiana, LLC	Owensville, IN	11 TWh	Mar 1975	Jan 2026	Bituminous Coal : 99.6%
Sherburne County	Northern States Power Co - Minnesota	Becker, MN	7 TWh	Mar 1976	Jan 2026	Subbituminous Coal : 99.8%
Grand Gulf	System Energy Resources, Inc	Port Gibson, MS	11 TWh	Jun 1985	Jan 2026	Nuclear
Newton	Illinois Power Generating Co	Newton, IL	4 TWh	Oct 1977	Jan 2026	Subbituminous Coal : 99.9%
Lewis Creek	Entergy Texas Inc.	Willis, TX	2 TWh	Nov 1970	Jan 2026	Natural Gas
Callaway	Union Electric Co - (MO)	Fulton, MO	7 TWh	Nov 1984	Jan 2026	Nuclear
Nine Mile Point	Entergy Louisiana LLC	Westwego, LA	8 TWh	Oct 1955	Jan 2026	Natural Gas : 99.4% Distillate Fuel Oil : 0.6%
Louisiana 1	Entergy Louisiana LLC	Baton Rouge, LA	3 TWh	Sep 1951	Jan 2026	Natural Gas : 73.0% Other Gas : 27.0%
R S Nelson	Entergy Louisiana LLC	Westlake, LA	2 TWh	Jan 1959	Jan 2026	Subbituminous Coal : 99.6%
Coughlin Power Station	Cleco Power LLC	St Landry, LA	3 TWh	Mar 1961	Jan 2026	Natural Gas

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#60	Alcoa Power Generating, Inc. - Yadkin Division	585.1 GWh	4
#27	Associated Electric Cooperative, Inc.	23.9 TWh	47
#13	Duke Energy Carolinas	112.7 TWh	565
#52	Duke Energy Progress West	4.4 TWh	10
#23	Louisville Gas and Electric Company and Kentucky Utilities Company	34.1 TWh	25
#1	PJM Interconnection, LLC	881.1 TWh	2,465
#6	Southern Company Services, Inc. - Trans	252.1 TWh	417
#5	Southwest Power Pool	302.6 TWh	835
#51	Southwestern Power Administration	4.7 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	881.1 TWh	2,465
#2	Midcontinent Independent System Operator, Inc.	663.6 TWh	2,831
#3	Electric Reliability Council of Texas, Inc.	488.4 TWh	1,313
#5	Southwest Power Pool	302.6 TWh	835
#6	Southern Company Services, Inc. - Trans	252.1 TWh	417
#7	California Independent System Operator	177.5 TWh	2,075
#9	Tennessee Valley Authority	163.1 TWh	204
#10	Florida Power & Light Co.	151.0 TWh	187
#12	New York Independent System Operator	134.4 TWh	1,211
#13	Duke Energy Carolinas	112.7 TWh	565