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	Nov 2025
Annual Generation	655.1 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 \| 35.7% Coal \| 29% Wind \| 14.9% Nuclear \| 13.9% Solar \| 4.5% 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
ArcelorMittal Burns Harbor	Cleveland-Cliffs Burns Harbor LLC	Burns Harbor, IN	922 GWh	Dec 1968	Dec 2024	Blast Furnace Gas : 42.6% Other Gas : 32.9% Natural Gas : 24.4%
Purdue University	Purdue University	West Lafayette, IN	84 GWh	Dec 1968	Sep 2025	Natural Gas : 90.8% Bituminous Coal : 9.2%
Preston (IA)	City of Preston	Preston, IA	9 MWh	Nov 1968	Dec 2024	Natural Gas : 89.7% Distillate Fuel Oil : 10.3%
Wilmot	DTE Electric Company	Kingston Twp, MI	353 MWh	Nov 1968	Sep 2025	Distillate Fuel Oil
City of Peru Plank Road Generating Station	City of Peru - (IL)	Peru, IL	17 GWh	Sep 1968	Sep 2025	Water : 98.6% Distillate Fuel Oil : 1.1%
Detroit Lakes	City of Detroit Lakes - (MN)	Detroit Lakes, MN	50 MWh	Jun 1968	Dec 2024	Distillate Fuel Oil
Dallman	City of Springfield - (IL)	Springfield, IL	809 GWh	May 1968	Sep 2025	Bituminous Coal : 99.6%
Burlington (IA)	Interstate Power and Light Co	Burlington, IA	14 GWh	May 1968	Sep 2025	Natural Gas
Valley (WI)	Wisconsin Electric Power Co	Milwaukee, WI	353 GWh	May 1968	Sep 2025	Natural Gas
Georgia-Pacific Monticello Paper	Georgia-Pacific Monticello LLC	Monticello, MS	550 GWh	May 1968	Dec 2024	Black Liquor : 47.2% Natural Gas : 40.2% Wood/Wood Waste Solids : 12.6%
Ames Electric Services Power Plant	City of Ames - (IA)	Ames, IA	306 GWh	Apr 1968	Dec 2024	Natural Gas : 90.9% Other Biomass Solids : 9.1%
Gas Turbine (IA)	Cedar Falls Utilities	Cedar Falls, IA	690 MWh	Dec 1967	Dec 2024	Natural Gas
Mosaic Phosphates Uncle Sam	Mosaic Phosphates Co.	Uncle Sam, LA	28 GWh	Dec 1967	Sep 2025	Waste Heat
Sycamore (WI)	Madison Gas & Electric Co	Madison, WI	19 MWh	Nov 1967	Dec 2024	Natural Gas
USG Paper, LLC - Orange Mill	USG Paper LLC	Orange, TX	239 GWh	Oct 1967	Dec 2023	Black Liquor : 59.3% Wood/Wood Waste Solids : 39.8% Tire-derived Fuels : 0.9%
AES Petersburg	AES Indiana	Petersburg, IN	5 TWh	May 1967	Sep 2025	Bituminous Coal : 99.8%
Sioux	Union Electric Co - (MO)	West Alton, MO	4 TWh	Apr 1967	Sep 2025	Subbituminous Coal : 73.2% Bituminous Coal : 26.7%
Highland	City of Highland	Highland, IL	187 MWh	Feb 1967	Dec 2024	Distillate Fuel Oil
Markland	Duke Energy Indiana, LLC	Florence, IN	299 GWh	Dec 1966	Dec 2024	Water
Claude Vandyke	Wolverine Power Supply Coop	Dorr, MI	5 GWh	Dec 1966	Dec 2024	Natural Gas
International Paper Vicksburg Mill	International Paper Co-Vicksbg	Vicksburg, MS	233 GWh	Dec 1966	Sep 2025	Black Liquor : 52.7% Natural Gas : 28.5% Wood/Wood Waste Solids : 18.8%
F B Culley	Southern Indiana Gas & Elec Co	Newburgh, IN	1 TWh	Nov 1966	Sep 2025	Bituminous Coal : 96.1% Natural Gas : 3.9%
Atlantic	Atlantic Municipal Utilities	Atlantic, IA	110 MWh	Aug 1966	Dec 2024	Natural Gas
River Hills	MidAmerican Energy Co	Des Moines, IA	1 GWh	Apr 1966	Dec 2024	Natural Gas
Northeast (MI)	DTE Electric Company	Warren, MI	6 GWh	Apr 1966	Dec 2024	Natural Gas : 84.7% Distillate Fuel Oil : 15.3%
Fermi	DTE Electric Company	Frenchtown Twp, MI	10 TWh	Mar 1966	Sep 2025	Nuclear
Hancock	DTE Electric Company	Commerce Twp, MI	9 GWh	Mar 1966	Dec 2024	Natural Gas
St Francisville Mill	Hood Container of Louisiana, LLC	St. Francisville, LA	110 GWh	Feb 1966	Dec 2024	Black Liquor : 58.6% Natural Gas : 41.4%
Indianola	Indianola Municipal Utilities	Indianola, IA	446 MWh	Dec 1965	Dec 2024	Distillate Fuel Oil
Robert A Reid	Big Rivers Electric Corp	Robards, KY	21 GWh	Dec 1965	Aug 2024	Natural Gas
New Lisbon	City of New Lisbon	New Lisbon, WI	19 MWh	Dec 1965	Dec 2024	Distillate Fuel Oil
ExxonMobil Beaumont Refinery	ExxonMobil Oil Corp	Beaumont, TX	4 TWh	Dec 1965	Sep 2025	Natural Gas : 96.9% Other Gas : 3.1%
T B Simon Power Plant	Michigan State University	East Lansing, MI	250 GWh	Nov 1965	Sep 2025	Natural Gas
Sam Rayburn Dam	USACE-Fort Worth District	Jasper, TX	199 GWh	Aug 1965	Dec 2024	Water
American Crystal Sugar Drayton	American Crystal Sugar Co	Drayton, ND	42 GWh	Aug 1965	Dec 2024	Subbituminous Coal
D G Hunter	City of Alexandria - (LA)	Alexandria, LA	69 GWh	Apr 1965	Dec 2024	Natural Gas
Hibbing	Hibbing Public Utilities Comm	Hibbing, MN	36 GWh	Mar 1965	Dec 2024	Natural Gas : 60.1% Wood/Wood Waste Solids : 38.2% Bituminous Coal : 1.7%
Nine Springs	Madison Gas & Electric Co	Madison, WI	82 MWh	Nov 1964	Dec 2024	Natural Gas
Carlyle	City of Carlyle - (IL)	Carlyle, IL	231 MWh	Jul 1964	Dec 2024	Distillate Fuel Oil
George Neal North	MidAmerican Energy Co	Sergeant Bluff, IA	2 TWh	Apr 1964	Sep 2025	Subbituminous Coal : 99.1% Natural Gas : 0.9%
Story City	City of Story City - (IA)	Story City, IA	97 MWh	Dec 1963	Dec 2024	Distillate Fuel Oil : 89.6% Natural Gas : 10.4%
Plant 31 Paper Mill	Graphic Packaging International	West Monroe, LA	523 GWh	Dec 1963	Dec 2024	Natural Gas : 63.2% Black Liquor : 25.1% Wood/Wood Waste Solids : 11.7%
Streeter Station	Cedar Falls Utilities	Cedar Falls, IA	8 GWh	Aug 1963	Dec 2024	Natural Gas : 94.0% Bituminous Coal : 6.0%
Osage (IA)	City of Osage - (IA)	Osage, IA	6 GWh	Aug 1963	Dec 2024	Wind : 81.2% Solar : 18.8%
Litchfield	Litchfield Public Utilities	Litchfield, MN	143 MWh	Aug 1963	Dec 2024	Natural Gas : 62.5% Distillate Fuel Oil : 37.5%
Marion	Southern Illinois Power Coop	Marion, IL	762 GWh	May 1963	Sep 2025	Bituminous Coal : 85.9% Natural Gas : 14.0%
J H Campbell	Consumers Energy Co - (MI)	West Olive, MI	8 TWh	Sep 1962	Sep 2025	Subbituminous Coal : 99.4%
Georgia-Pacific Crossett LLC	Georgia-Pacific Crossett LLC	Crossett, AR	4 GWh	Apr 1962	Jun 2024	Natural Gas
Sabine	Entergy Texas Inc.	Orange, TX	4 TWh	Dec 1961	Sep 2025	Natural Gas
MU Combined Heat and Power Plant	Curators of the University of Missouri	Columbia, MO	196 GWh	Jun 1961	Sep 2025	Natural Gas : 73.6% Wood/Wood Waste Solids : 23.7% Bituminous Coal : 2.6%
Coughlin Power Station	Cleco Power LLC	St Landry, LA	4 TWh	Mar 1961	Sep 2025	Natural Gas
Little Gypsy	Entergy Louisiana LLC	La Place, LA	815 GWh	Feb 1961	Sep 2025	Natural Gas
Blue Earth	Blue Earth Light & Water	Blue Earth, MN	96 MWh	Oct 1960	Dec 2024	Distillate Fuel Oil
Iowa State University	Iowa State University	Ames, IA	81 GWh	Sep 1960	Sep 2025	Natural Gas
Manistique	Cloverland Electric Co-op	Manistique, MI	1 GWh	Jun 1960	Dec 2024	Distillate Fuel Oil
Warrick	AGC Division of APGI Inc	Newburgh, IN	3 TWh	Mar 1960	Sep 2025	Bituminous Coal : 98.5% Natural Gas : 1.5%
South Oak Creek	Wisconsin Electric Power Co	Oak Creek, WI	2 TWh	Nov 1959	Sep 2025	Subbituminous Coal : 99.7%
Dan E Karn	Consumers Energy Co - (MI)	Essexville, MI	91 GWh	Oct 1959	Sep 2025	Natural Gas : 93.0% Residual Fuel Oil : 7.0%
John H Warden	L'Anse Warden Electric Company LLC	L'Anse, MI	111 GWh	Jul 1959	Dec 2024	Wood/Wood Waste Solids : 87.2% Tire-derived Fuels : 12.6%
Red Bud	City of Red Bud - (IL)	Red Bud, IL	121 MWh	Feb 1959	Dec 2024	Distillate Fuel Oil
R S Nelson	Entergy Louisiana LLC	Westlake, LA	2 TWh	Jan 1959	Sep 2025	Subbituminous Coal : 99.5%
Vestaburg	Wolverine Power Supply Coop	Vestaburg, MI	2 GWh	Dec 1958	Dec 2024	Natural Gas
Prairie Creek	Interstate Power and Light Co	Cedar Rapids, IA	86 GWh	Sep 1958	Sep 2025	Subbituminous Coal : 64.8% Natural Gas : 35.2%
Lewis & Clark	Montana-Dakota Utilities Co	Richland, MT	8 GWh	Sep 1958	Sep 2025	Natural Gas
Waverly Municipal Electric North Plant	Waverly Municipal Elec Utility	Waverly, IA	232 MWh	Jul 1958	Dec 2024	Distillate Fuel Oil : 55.1% Natural Gas : 44.9%
Clay Boswell	ALLETE, Inc.	Cohasset, MN	6 TWh	Jun 1958	Sep 2025	Subbituminous Coal : 99.7%
Harding Street	AES Indiana	Indianapolis, IN	3 TWh	May 1958	Sep 2025	Natural Gas
LaO Energy Systems	Dow Chemical Co	Plaquemine, LA	1 TWh	May 1958	Dec 2024	Natural Gas : 84.1% Other Gas : 15.9%
Pine Bluff Mill	Suzano Packaging LLC	Pine Bluff, AR	289 GWh	Apr 1958	Dec 2023	Black Liquor : 80.1% Natural Gas : 19.9%
Muscatine Plant #1	Board of Water Electric & Communications	Muscatine, IA	724 GWh	Mar 1958	Sep 2025	Subbituminous Coal : 99.7%
Allen S King	Northern States Power Co - Minnesota	Oak Park Heights, MN	721 GWh	Feb 1958	Sep 2025	Subbituminous Coal : 99.7%
Atlantic Alumina, Gramercy Operations	Atalco Gramercy LLC	Gramercy, LA	208 GWh	Jan 1958	Dec 2024	Natural Gas
Hutchinson Plant #1	Hutchinson Utilities Comm	Hutchinson, MN	36 GWh	Dec 1957	Dec 2024	Natural Gas
Menomonie	Northern States Power Co - Minnesota	Menomonie, WI	24 GWh	Dec 1957	Dec 2024	Water
Decorative Panels Intl	Decorative Panels International, Inc.	Alpena, MI	43 GWh	Oct 1957	Dec 2023	Natural Gas : 79.6% Wood/Wood Waste Solids : 20.4%
Coggon	Coggon Municipal Light Plant	Coggon, IA	8 MWh	Sep 1957	Dec 2024	Distillate Fuel Oil
Graettinger	City of Graettinger - (IA)	Graettinger, IA	59 MWh	Jul 1957	Dec 2024	Distillate Fuel Oil
Geneseo	City of Geneseo - (IL)	Geneseo, IL	8 GWh	Jun 1957	Sep 2025	Wind : 75.9% Solar : 22.4%
Glencoe	Glencoe Light & Power Comm	Glencoe, MN	182 MWh	May 1957	Dec 2024	Distillate Fuel Oil : 99.8%
Blount Street	Madison Gas & Electric Co	Madison, WI	49 GWh	May 1957	Dec 2024	Natural Gas
Motiva Enterprises Port Arthur Refinery	Motiva Enterprises LLC	Port Arthur, TX	2 TWh	May 1957	Sep 2025	Natural Gas : 90.8% Other Gas : 9.2%
New Ulm	New Ulm Public Utilities Comm	New Ulm, MN	2 GWh	Dec 1956	Dec 2024	Natural Gas : 95.4% Distillate Fuel Oil : 4.6%
Columbia (MO)	City of Columbia - (MO)	Columbia, MO	22 GWh	Dec 1956	Dec 2024	Landfill Gas : 63.9% Natural Gas : 36.1%
Willmar	Willmar Municipal Utilities	Willmar, MN	5 GWh	Aug 1956	Jul 2024	Wind
Sumner	City of Sumner - (IA)	Sumner, IA	175 MWh	Jul 1956	Dec 2024	Distillate Fuel Oil
Winterset	City of Winterset - (IA)	Winterset, IA	35 MWh	Jun 1956	Dec 2024	Natural Gas : 55.9% Distillate Fuel Oil : 44.1%
Lake Mills	City of Lake Mills	Lake Mills, IA	38 MWh	Dec 1955	Dec 2024	Distillate Fuel Oil
Nine Mile Point	Entergy Louisiana LLC	Westwego, LA	8 TWh	Oct 1955	Sep 2025	Natural Gas
Dafter	Cloverland Electric Co-op	Dafter, MI	3 GWh	Oct 1955	Dec 2024	Distillate Fuel Oil
Tipton	City of Tipton - (IA)	Tipton, IA	69 MWh	Oct 1955	Dec 2024	Distillate Fuel Oil
Blakely Mountain	USCE -Vickburg District	Royal, AR	158 GWh	Aug 1955	Dec 2024	Water
Manitowoc	Manitowoc Public Utilities	Manitowoc, WI	179 GWh	May 1955	Sep 2025	Wood/Wood Waste Solids : 91.2% Petroleum Coke : 4.8% Bituminous Coal : 3.6%
Janesville	City of Janesville - (MN)	Janesville, MN	20 MWh	Apr 1955	Dec 2024	Distillate Fuel Oil : 97.0% Natural Gas : 3.0%
West Bend	City of West Bend	West Bent, IA	174 MWh	Nov 1954	Dec 2024	Distillate Fuel Oil
Weston	Wisconsin Public Service Corp	Rothschild, WI	5 TWh	Nov 1954	Sep 2025	Subbituminous Coal : 99.5% Natural Gas : 0.5%
R M Heskett	Montana-Dakota Utilities Co	Mandan, ND	57 GWh	Oct 1954	Sep 2025	Natural Gas
Black Dog	Northern States Power Co - Minnesota	Burnsville, MN	2 TWh	Sep 1954	Dec 2024	Natural Gas
Hennepin Island	Northern States Power Co - Minnesota	Minneapolis, MN	47 GWh	Sep 1954	Dec 2024	Water
American Crystal Sugar Crookston	American Crystal Sugar Co	Crookston, MN	43 GWh	Aug 1954	Dec 2024	Subbituminous Coal
WestRock (TX)	WestRock (TX)	Evadale, TX	415 GWh	May 1954	Dec 2024	Black Liquor : 58.9% Wood/Wood Waste Solids : 22.0% Natural Gas : 19.1%

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#61	Alcoa Power Generating, Inc. - Yadkin Division	696.7 GWh	4
#27	Associated Electric Cooperative, Inc.	23.6 TWh	47
#13	Duke Energy Carolinas	112.5 TWh	565
#52	Duke Energy Progress West	4.3 TWh	10
#24	Louisville Gas and Electric Company and Kentucky Utilities Company	34.4 TWh	25
#1	PJM Interconnection, LLC	870.7 TWh	2,465
#6	Southern Company Services, Inc. - Trans	250.9 TWh	417
#5	Southwest Power Pool	299.9 TWh	835
#49	Southwestern Power Administration	5.2 TWh	34
#9	Tennessee Valley Authority	161.6 TWh	204

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#1	PJM Interconnection, LLC	870.7 TWh	2,465
#2	Midcontinent Independent System Operator, Inc.	655.1 TWh	2,831
#4	Electric Reliability Council of Texas, Inc.	485.0 TWh	1,313
#5	Southwest Power Pool	299.9 TWh	835
#6	Southern Company Services, Inc. - Trans	250.9 TWh	417
#7	California Independent System Operator	188.0 TWh	2,075
#9	Tennessee Valley Authority	161.6 TWh	204
#10	Florida Power & Light Co.	148.9 TWh	187
#12	New York Independent System Operator	131.6 TWh	1,211
#13	Duke Energy Carolinas	112.5 TWh	565