Midcontinent Independent System Operator, Inc.

Balancing Authority Summary Information

Midcontinent Independent System Operator, Inc. is ranked #2 out of 64 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	Jul 2026
Annual Generation	669.4 TWh
Power Plants	3,038
Utilities	1,345
Ranked #2 out of 64 in terms of net annual generation
Ranked #2 out of 53 in terms of annual generation from natural gas
Power Plant Types	Natural Gas \| 37% Coal \| 26.5% Wind \| 14.9% Nuclear \| 13.9% Solar \| 5.7% Water \| 1.4% Other Fuel \| 0.6%

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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
Paris (WI)	Wisconsin Electric Power Co	Union Grove, WI	215 GWh	Feb 1995	Dec 2025	Natural Gas
Water Street Station	City of Bay City - (MI)	Bay City, MI	1 GWh	Jul 1980	Dec 2025	Natural Gas : 90.5% Distillate Fuel Oil : 9.5%
Henry Station	City of Bay City - (MI)	Bay City, MI	1 GWh	Apr 1993	Dec 2025	Natural Gas : 93.0% Distillate Fuel Oil : 7.0%
Lakefield Utilities	City of Lakefield - (MN)	Lakefield, MN	11 MWh	Jan 1985	Dec 2025	Distillate Fuel Oil
Interstate	City of Springfield - (IL)	Springfield, IL	58 GWh	Aug 1997	Dec 2025	Natural Gas : 99.2% Distillate Fuel Oil : 0.8%
Marceline	City of Marceline - (MO)	Marceline, MO	20 MWh	Jul 1989	Dec 2025	Distillate Fuel Oil
Panora	City of Panora - (IA)	Panora, IA	8 MWh	Dec 1987	Dec 2025	Distillate Fuel Oil
South Plant (IA)	Waverly Municipal Elec Utility - (IA)	Waverly, IA	71 MWh	Apr 2000	Dec 2025	Distillate Fuel Oil
Georgetown	AES Indiana	Indianapolis, IN	307 GWh	May 2000	Dec 2025	Natural Gas
Tilton	Tilton Energy LLC	Tilton, IL	54 GWh	May 1999	Dec 2025	Natural Gas
Henry County	Duke Energy Indiana, LLC	New Castle, IN	275 GWh	Jun 2001	Dec 2025	Natural Gas
Custer Energy Center	Manitowoc Public Utilities	Manitowoc, WI	4 GWh	May 1999	Dec 2025	Natural Gas
West Marinette 34	Madison Gas & Electric Co	Peshtigo, WI	85 GWh	May 2000	Dec 2025	Natural Gas
Pine Street	Village of Sebewaing - (MI)	Sebewaing, MI	462 MWh	May 1969	Dec 2025	Natural Gas
Argyle	City of Argyle - (WI)	Argyle, WI	193 MWh	Dec 1928	Dec 2025	Water : 92.7% Distillate Fuel Oil : 7.3%
Alsey	Prairie Power, Inc	Alsey, IL	35 GWh	May 1999	Dec 2025	Natural Gas : 99.8%
Big Quinnesec 92	Wisconsin Electric Power Co	Iron Mountain, MI	100 GWh	Oct 1949	Dec 2025	Water
Big Quinnesec 61	Wisconsin Electric Power Co	Iron Mountain, MI	2 GWh	Apr 1914	Dec 2025	Water
Kaukauna City Hydro	City of Kaukauna (WI)	Kaukauna, WI	31 GWh	Nov 1940	Dec 2025	Water
Beaver Island	Great Lakes Energy Coop	Beaver Island, MI	50 MWh	Aug 2000	Dec 2025	Distillate Fuel Oil
Pleasant Valley (MN)	Great River Energy	Dexter, MN	157 GWh	Apr 2001	Dec 2025	Natural Gas : 99.2% Distillate Fuel Oil : 0.8%
Minnesota River	Minnesota Municipal Power Agny	Chaska, MN	2 GWh	Apr 2001	Dec 2025	Natural Gas
Knoxville Industrial	MidAmerican Energy Co	Knoxville, IA	225 MWh	Mar 2000	Dec 2025	Distillate Fuel Oil
Shenandoah	MidAmerican Energy Co	Shenandoah, IA	323 MWh	Mar 2000	Dec 2025	Distillate Fuel Oil
Waterloo Lundquist	MidAmerican Energy Co	Waterloo, IA	255 MWh	Mar 2000	Dec 2025	Distillate Fuel Oil
Avenue A Generator Sets	City of Rock Falls - (IL)	Rock Falls, IL	224 MWh	Aug 2000	Dec 2025	Distillate Fuel Oil
North Generation Plant	City of Greenfield - (IA)	Greenfield, IA	11 MWh	Dec 2001	Dec 2025	Distillate Fuel Oil
Gilliam South	City of Stuart - (IA)	Stuart, IA	4 MWh	Jan 2001	Dec 2025	Distillate Fuel Oil
Elk Mound	Dairyland Power Coop	Elk Mound, WI	466 MWh	May 2001	Dec 2025	Natural Gas : 63.5% Distillate Fuel Oil : 36.5%
Earlville	City of Earlville - (IA)	Earlville, IA	7 MWh	Jun 2001	Dec 2025	Distillate Fuel Oil
Wind Turbine	Madison Gas & Electric Co	Casco, WI	12 GWh	May 1999	Dec 2025	Wind
Traer South	City of Traer - (IA)	Traer, IA	12 MWh	Mar 2001	Dec 2025	Distillate Fuel Oil
Brooklyn City North Plant	City of Brooklyn - (IA)	Brooklyn, IA	7 MWh	Apr 2002	Dec 2025	Distillate Fuel Oil
Lakefield Junction	Great River Energy	Trimont, MN	95 GWh	May 2001	Dec 2025	Natural Gas : 99.8%
Gaylord - Wolverine	Wolverine Power Supply Coop	Gaylord, MI	37 GWh	May 2001	Dec 2025	Natural Gas
Industrial Park	City of Rock Falls - (IL)	Rock Falls, IL	838 MWh	Jun 2001	Dec 2025	Distillate Fuel Oil
Solway CT	Otter Tail Power Co	Solway, MN	143 GWh	Apr 2003	Dec 2025	Natural Gas : 99.5%
Lawrence County Station	Hoosier Energy R E C, Inc	Mitchell, IN	164 GWh	Apr 2005	Dec 2025	Natural Gas
Peno Creek	Union Electric Co - (MO)	Bowling Green, MO	156 GWh	Apr 2002	Dec 2025	Natural Gas : 99.3% Distillate Fuel Oil : 0.7%
Pella Peaking	City of Pella - (IA)	Pella, IA	752 MWh	May 2003	Dec 2025	Distillate Fuel Oil
Sumpter	Wolverine Power Supply Coop	Belleville, MI	291 GWh	Jun 2002	Dec 2025	Natural Gas
South Generation	Redwood Falls Public Util Comm	Redwood Falls, MN	281 MWh	Feb 2003	Dec 2025	Distillate Fuel Oil
Kalkaska CT #1	Michigan Public Power Agency	Kalkaska, MI	58 GWh	Nov 2002	Dec 2025	Natural Gas
Greater Des Moines	MidAmerican Energy Co	Pleasant Hill, IA	2 TWh	Apr 2003	Dec 2025	Natural Gas
Silver Creek	Cooperative Energy	Prentiss, MS	282 GWh	May 2003	Dec 2025	Natural Gas
Sylvarena	Cooperative Energy	Raleigh, MS	262 GWh	Jun 2003	Dec 2025	Natural Gas
Altamont	City of Altamont - (IL)	Altamont, IL	75 MWh	Dec 2001	Dec 2025	Distillate Fuel Oil
West Campus Cogeneration Facility	Madison Gas & Electric Co	Madison, WI	305 GWh	Mar 2005	Dec 2025	Natural Gas
Factory	City of Springfield - (IL)	Springfield, IL	132 MWh	Jul 1973	Dec 2025	Distillate Fuel Oil
Blue Lake	Northern States Power Co - Minnesota	Shakopee, MN	435 GWh	Feb 1974	Dec 2025	Natural Gas
Sycamore (IA)	MidAmerican Energy Co	Johnston, IA	30 GWh	Jul 1974	Dec 2025	Natural Gas
Halstad	City of Halstad - (MN)	Halstad, MN	34 MWh	Aug 2007	Dec 2025	Distillate Fuel Oil
Tipton	City of Tipton - (IA)	Tipton, IA	266 MWh	Oct 1955	Dec 2025	Distillate Fuel Oil
Hopkinton	City of Hopkinton - (IA)	Hopkinton, IA	54 MWh	Aug 1973	Dec 2025	Distillate Fuel Oil
Nine Springs	Madison Gas & Electric Co	Madison, WI	89 MWh	Nov 1964	Dec 2025	Natural Gas
ArcelorMittal Burns Harbor	Cleveland-Cliffs Burns Harbor LLC	Burns Harbor, IN	719 GWh	Dec 1968	Dec 2025	Blast Furnace Gas : 37.1% Natural Gas : 32.1% Other Gas : 30.8%
Louisiana Sugar Refining	Louisiana Sugar Refining LLC	Gramercy, LA	9 GWh	Aug 1930	Dec 2025	Natural Gas
Geismar	BASF Corporation	Geismar, LA	626 GWh	Jun 1985	Dec 2025	Natural Gas : 85.5% Other Gas : 14.5%
Indiana Harbor West	Cleveland Cliffs	East Chicago, IN	208 GWh	Sep 1939	Dec 2025	Natural Gas
LAC Courte Oreilles Hydroelect	Zero6 Energy Hydro	Winter, WI	7 GWh	Nov 1986	Dec 2025	Water
DeRidder Mill	Packaging Corporation of America	DeRidder, LA	405 GWh	Sep 1969	Dec 2025	Black Liquor : 44.6% Wood/Wood Waste Solids : 37.8% Natural Gas : 17.6%
Dayton Hydro	Eagle Creek Renewable Energy, LLC	Ottawa, IL	10 GWh	Dec 1924	Dec 2025	Water
Grand River	Energy Developments, Inc d/b/a EDL	Grand Ledge, MI	8 GWh	Mar 1991	Dec 2025	Landfill Gas
Port Arthur Texas Refinery	Total Petrochemicals USA Inc	Port Arthur, TX	248 GWh	Jul 1988	Dec 2025	Natural Gas : 71.8% Other Gas : 28.2%
Agrilectric Power Partners Ltd	Agrilectric Power Partners Ltd	Lake Charles, LA	84 GWh	Jun 1984	Dec 2025	Agricultural By-Products : 99.5%
Rapids Energy Center	ALLETE, Inc.	Grand Rapids, MN	40 GWh	Dec 1942	Dec 2025	Natural Gas : 81.7% Water : 18.3%
ExxonMobil Baton Rouge Turbine Generator	Exxon Mobil Corp	Baton Rouge, LA	552 GWh	Apr 1990	Dec 2025	Natural Gas
Ada Cogeneration LP	Ada Cogeneration LLC	Ada, MI	185 GWh	Sep 1990	Dec 2025	Natural Gas
Grayling Generating Station	NorthStar Clean Energy	Grayling, MI	182 GWh	Apr 1992	Dec 2025	Wood/Wood Waste Solids
Cargill Corn Milling Division	Cargill Inc North America Sweetners	Eddyville, IA	112 GWh	Nov 1952	Dec 2025	Natural Gas
Archer Daniels Midland Peoria	BioUrja Renewables LLC	Peoria, IL	73 GWh	Dec 1987	Dec 2025	Natural Gas
Primient Decatur Plant Cogen	Primary Products Ingredients Americas, LLC	Decatur, IL	150 GWh	Dec 1988	Dec 2025	Natural Gas
Plant 31 Paper Mill	Graphic Packaging International	West Monroe, LA	515 GWh	Dec 1963	Dec 2025	Natural Gas : 62.4% Black Liquor : 25.3% Wood/Wood Waste Solids : 12.3%
Domtar Paper Company Rothschild	Domtar Paper Company Rothschild	Rothschild, WI	524 MWh	Dec 1909	Dec 2025	Water
Billerud Quinnesec Mill	Billerud Quinnesec Mill	Norway, MI	318 GWh	Sep 1985	Dec 2025	Black Liquor : 64.2% Wood/Wood Waste Solids : 32.7% Natural Gas : 3.1%
Sartell Dam	Eagle Creek Renewable Energy, LLC	Sartell, MN	30 GWh	Feb 1985	Dec 2025	Water
Port Allen (LA)	Placid Refining Co LLC	Port Allen, LA	50 GWh	Apr 1990	Dec 2025	Natural Gas
Park Mill	Eagle Creek Renewable Energy, LLC	Marinette, WI	4 GWh	Dec 1919	Dec 2025	Water
Olmsted Waste Energy	Olmsted County Public Works - (MN)	Rochester, MN	47 GWh	Mar 1987	Dec 2025	Non-biogenic Municipal Solid Waste : 54.7% Biogenic Municipal Solid Waste : 44.8% Natural Gas : 0.5%
Ada Dam	Eagle Creek Renewable Energy, LLC	Ada, MI	2 GWh	Feb 1984	Dec 2025	Water
Cascade Dam (MI)	Eagle Creek Renewable Energy, LLC	Grand Rapids, MI	4 GWh	Nov 1986	Dec 2025	Water
French Landing Dam	Eagle Creek Renewable Energy, LLC	Belleville, MI	5 GWh	Nov 1988	Dec 2025	Water
Oconto Falls Lower	Eagle Creek Renewable Energy, LLC	Oconto Falls, WI	6 GWh	Dec 1970	Dec 2025	Water
Packaging of America Tomahawk Mill	PCA-Tomahawk Mill	Tomahawk, WI	113 GWh	Dec 1919	Dec 2025	Wood/Wood Waste Solids : 35.4% Natural Gas : 35.0% Black Liquor : 18.0% Water : 11.0% Other Biomass Solids : 0.6%
PPG Plant C Caustic	Westlake 2 US LLC	Lake Charles, LA	14 GWh	Sep 1986	Dec 2025	Natural Gas
Milam Gas Recovery	WM Illinois Renewable Energy LLC	East St. Lois, IL	19 GWh	Mar 1991	Dec 2025	Natural Gas
Metro Gas Recovery	WM Renewable Energy LLC	Franklin, WI	41 GWh	Nov 1985	Dec 2025	Landfill Gas
Chalmette Refining LLC	Chalmette Refining LLC	Chalmette, LA	6 GWh	Feb 1990	Dec 2025	Other Fuel
Brainerd Public Utilities	Brainerd Public Utilities	Brainerd, MN	13 GWh	Dec 1916	Dec 2025	Water
Clearwater Paper APP CB	Clearwater Paper Corporation	Arkansas City, AR	123 GWh	Oct 1977	Dec 2025	Black Liquor : 58.1% Natural Gas : 41.5%
Tazewell Gas Recovery	WM Illinois Renewable Energy LLC	East Peoria, IL	11 GWh	Jun 1989	Dec 2025	Landfill Gas
Westrock Hodge (LA)	Westrock (LA)	Hodge, LA	489 GWh	Nov 1952	Dec 2025	Black Liquor : 51.3% Natural Gas : 35.6% Wood/Wood Waste Solids : 13.1%
Des Moines Wastewater Reclamation Fac	Des Moines Metro WRF	Des Moines, IA	74 MWh	Jun 1991	Dec 2025	Natural Gas
Winnebago County Landfill Gas	Winnebago County - (WI)	Oshkosh, WI	3 GWh	Jan 2000	Dec 2025	Landfill Gas
Whiting Refinery	BP PLC	Whiting, IN	328 GWh	Dec 1947	Dec 2025	Other Gas : 87.1% Natural Gas : 12.9%
CITGO Refinery Powerhouse	CITGO Petroleum Corp	Sulphur, LA	224 GWh	Dec 1941	Dec 2025	Other Gas
American Crystal Sugar Hillsboro	American Crystal Sugar Co	Hillsboro, ND	85 GWh	Aug 1990	Dec 2025	Subbituminous Coal
American Crystal Sugar Crookston	American Crystal Sugar Co	Crookston, MN	41 GWh	Aug 1954	Dec 2025	Subbituminous Coal
American Crystal Sugar Drayton	American Crystal Sugar Co	Drayton, ND	43 GWh	Aug 1965	Dec 2025	Subbituminous Coal
American Crystal Sugar East Grand Forks	American Crystal Sugar Co	East Grand Forks, MN	43 GWh	Aug 1990	Dec 2025	Subbituminous Coal

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#61	Alcoa Power Generating, Inc. - Yadkin Division	442.5 GWh	4
#26	Associated Electric Cooperative, Inc.	23.4 TWh	47
#13	Duke Energy Carolinas	112.6 TWh	577
#50	Duke Energy Progress West	4.5 TWh	15
#23	Louisville Gas and Electric Company and Kentucky Utilities Company	33.9 TWh	25
#1	PJM Interconnection, LLC	882.8 TWh	2,652
#6	Southern Company Services, Inc. - Trans	253.5 TWh	422
#5	Southwest Power Pool	306.8 TWh	856
#53	Southwestern Power Administration	4.1 TWh	34
#9	Tennessee Valley Authority	163.4 TWh	207

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#1	PJM Interconnection, LLC	882.8 TWh	2,652
#2	Midcontinent Independent System Operator, Inc.	669.4 TWh	3,038
#3	Electric Reliability Council of Texas, Inc.	494.1 TWh	1,471
#5	Southwest Power Pool	306.8 TWh	856
#6	Southern Company Services, Inc. - Trans	253.5 TWh	422
#7	California Independent System Operator	169.4 TWh	2,135
#9	Tennessee Valley Authority	163.4 TWh	207
#10	Florida Power & Light Co.	152.2 TWh	187
#12	New York Independent System Operator	134.3 TWh	1,299
#13	Duke Energy Carolinas	112.6 TWh	577