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
Purdue University	Purdue University	West Lafayette, IN	93 GWh	Dec 1968	Dec 2025	Natural Gas : 91.8% Bituminous Coal : 8.2%
Gibson	Duke Energy Indiana, LLC	Owensville, IN	11 TWh	Mar 1975	Dec 2025	Bituminous Coal : 99.6%
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%
Rolling Hills Wind Farm	MidAmerican Energy Co	Massena, IA	2 TWh	Nov 2011	Dec 2025	Wind
Big Stone	Otter Tail Power Co	Big Stone City, SD	2 TWh	Apr 1975	Dec 2025	Subbituminous Coal : 99.8%
University of Northern Iowa	University of Northern Iowa	Cedar Falls, IA	21 GWh	Oct 1982	Dec 2025	Natural Gas : 72.3% Petroleum Coke : 18.0% Bituminous Coal : 9.6%
Garden Wind LLC	Garden Wind LLC	Zearing, IA	375 GWh	Nov 2009	Dec 2025	Wind
Crystal Lake 3 LLC	Crystal Lake 3 LLC	Britt, IA	237 GWh	Nov 2009	Dec 2025	Wind
Pine Tree Acres WM LFGTE	WM Renewable Energy LLC	Lenox, MI	88 GWh	Feb 2012	Dec 2025	Landfill Gas
Sherburne County	Northern States Power Co - Minnesota	Becker, MN	7 TWh	Mar 1976	Dec 2025	Subbituminous Coal : 99.8%
Lewis & Clark	Montana-Dakota Utilities Co	Richland, MT	10 GWh	Sep 1958	Dec 2025	Natural Gas
Buffalo Ridge II LLC	Avangrid Power LLC	Elkton, SD	479 GWh	Nov 2010	Dec 2025	Wind
Gratiot Wind Park	DTE Electric Company	Breckenridge, MI	235 GWh	Oct 2011	Dec 2025	Wind
Archer Daniels Midland Decatur	Archer Daniels Midland Co	Decatur, IL	901 GWh	Mar 1987	Dec 2025	Bituminous Coal : 61.1% Subbituminous Coal : 38.6%
Smithland Hydroelectric Plant	American Mun Power-Ohio, Inc	Smithland, KY	336 GWh	Jun 2017	Dec 2025	Water
Archer Daniels Midland Cedar Rapids	Archer Daniels Midland Co	Cedar Rapids, IA	990 GWh	Oct 1988	Dec 2025	Subbituminous Coal : 60.4% Natural Gas : 24.6% Bituminous Coal : 15.0%
Cannon Falls Energy Center	Invenergy Services LLC	Cannon Falls, MN	809 GWh	Mar 2008	Dec 2025	Natural Gas
Perryville Power Station	Entergy Louisiana LLC	Sterlington, LA	4 TWh	May 2001	Dec 2025	Natural Gas
Archer Daniels Midland Clinton	Archer Daniels Midland Co	Clinton, IA	716 GWh	Jan 2009	Dec 2025	Subbituminous Coal : 88.3% Other Biomass Solids : 7.7% Bituminous Coal : 4.0%
Riverside Energy Center	Wisconsin Power & Light Co	Beloit, WI	3 TWh	May 2004	Dec 2025	Natural Gas
R M Schahfer	Northern Indiana Pub Serv Co	Wheatfield, IN	1 TWh	Nov 1976	Dec 2025	Bituminous Coal : 94.0% Natural Gas : 6.0%
Lakefield Wind Project LLC	EDF Renewable Asset Holdings, Inc.	Lakefield, MN	374 GWh	Sep 2011	Dec 2025	Wind
Grand Gulf	System Energy Resources, Inc	Port Gibson, MS	11 TWh	Jun 1985	Dec 2025	Nuclear
Sabine River Operations	The Dow Chemical Company	Orange, TX	3 TWh	Dec 1947	Dec 2025	Natural Gas : 99.4% Other Gas : 0.6%
Midland Cogeneration Venture	Midland Cogeneration Venture	Midland, MI	10 TWh	May 1989	Dec 2025	Natural Gas
Magnet Cove	Arkansas Electric Coop Corp	Malvern, AR	4 TWh	Jun 2005	Dec 2025	Natural Gas
OREG 3 Inc	Ormat Nevada Inc	Trimont, MN	43 GWh	Jul 2010	Dec 2025	Waste Heat
Montfort Wind Energy Center	Wisconsin Electric Power Co	Montfort, WI	55 GWh	May 2002	Dec 2025	Wind
R D Morrow	Cooperative Energy	Purvis, MS	3 TWh	Mar 1978	Dec 2025	Natural Gas
Glacier Hills	Wisconsin Electric Power Co	Cambria, WI	369 GWh	Nov 2011	Dec 2025	Wind
Big Cajun 2	Louisiana Generating LLC	New Roads, LA	3 TWh	Jun 1981	Dec 2025	Subbituminous Coal : 74.3% Natural Gas : 25.7%
Greenwood (MI)	DTE Electric Company	Avoca, MI	1 TWh	Jun 1979	Dec 2025	Natural Gas
Elk River	Great River Energy	Elk River, MN	124 GWh	Dec 1950	Dec 2025	Natural Gas : 99.9%
Belle River	DTE Electric Company	China Twp, MI	6 TWh	Oct 1981	Dec 2025	Subbituminous Coal : 93.1% Natural Gas : 6.5%
MNDOT Standby Generation	State of Minnesota Department of Administration	St. Paul, MN	43 MWh	Jun 1995	Dec 2025	Distillate Fuel Oil
Moselle	Cooperative Energy	Moselle, MS	2 TWh	Jul 1970	Dec 2025	Natural Gas
Coal Creek	Rainbow Energy Center	Underwood, ND	8 TWh	May 1979	Dec 2025	Refined Coal : 99.9%
Labadie	Union Electric Co - (MO)	Labadie, MO	17 TWh	May 1970	Dec 2025	Subbituminous Coal : 99.9%
Prairie State Generating Station	Prairie State Generating Co LLC	Marissa, IL	12 TWh	May 2012	Dec 2025	Bituminous Coal : 99.8%
Sioux	Union Electric Co - (MO)	West Alton, MO	4 TWh	Apr 1967	Dec 2025	Subbituminous Coal : 75.2% Bituminous Coal : 24.7%
International Falls Power	Boise White Paper LLC	International Falls, MN	48 GWh	Dec 1923	Dec 2025	Water
Quilt Block Wind Farm LLC	Quilt Block Wind Farm LLC	Darlington, WI	381 GWh	Aug 2017	Dec 2025	Wind
Boise Cascade International Falls	Boise White Paper LLC	International Falls, MN	336 GWh	Dec 1926	Dec 2025	Black Liquor : 63.8% Natural Gas : 22.2% Wood/Wood Waste Solids : 12.7% Sludge Waste : 1.3%
Expander Turbine	Cleveland Cliffs	East Chicago, IN	85 GWh	Apr 1981	Dec 2025	Blast Furnace Gas
Granite City Works	United States Steel Granite City Works	Granite City, IL	448 GWh	May 2010	Dec 2025	Natural Gas : 50.8% Purchased Steam : 49.2%
R M Heskett	Montana-Dakota Utilities Co	Mandan, ND	56 GWh	Oct 1954	Dec 2025	Natural Gas
Newton	Illinois Power Generating Co	Newton, IL	4 TWh	Oct 1977	Dec 2025	Subbituminous Coal : 99.9%
Milton R Young	Minnkota Power Coop, Inc	Center, ND	4 TWh	Sep 1970	Dec 2025	Lignite Coal : 99.8%
Merricourt Wind Energy Center	Otter Tail Power Co	Kulm, ND	584 GWh	Nov 2020	Dec 2025	Wind
Lewis Creek	Entergy Texas Inc.	Willis, TX	2 TWh	Nov 1970	Dec 2025	Natural Gas
Sabine	Entergy Texas Inc.	Orange, TX	3 TWh	Dec 1961	Dec 2025	Natural Gas
Nobles Wind Project	Northern States Power Co - Minnesota	Reading, MN	823 GWh	Nov 2010	Dec 2025	Wind
Anheuser-Busch St Louis	Anheuser-Busch Inc	St. Louis, MO	42 GWh	Dec 1938	Dec 2025	Natural Gas : 93.5% Other Biomass Gas : 6.5%
White Bluff	Entergy Arkansas LLC	Redfield, AR	4 TWh	Jul 1980	Dec 2025	Subbituminous Coal : 99.5%
John P Madgett	Dairyland Power Coop	Alma, WI	1 TWh	Oct 1979	Dec 2025	Subbituminous Coal : 99.7%
Consumer Operations LLC	Georgia-Pacific Consumer Oper. Green Bay LLC	Green Bay, WI	225 GWh	Dec 1953	Dec 2025	Natural Gas
T B Simon Power Plant	Michigan State University	East Lansing, MI	251 GWh	Nov 1965	Dec 2025	Natural Gas
Waterford 3	Entergy Louisiana LLC	Killona, LA	8 TWh	Aug 1985	Dec 2025	Nuclear
Hancock County Wind Energy Center	FPL Energy Hancock County Wind, LLC	Garner, IA	255 GWh	Nov 2002	Dec 2025	Wind
Fox Energy Center	Wisconsin Public Service Corp	Wrightstown, WI	4 TWh	May 2005	Dec 2025	Natural Gas
Escanaba Mill	Billerud Escanaba LLC	Escanaba, MI	466 GWh	Dec 1968	Dec 2025	Black Liquor : 45.4% Natural Gas : 30.9% Wood/Wood Waste Solids : 22.9% Residual Fuel Oil : 0.7%
Forward Wind Energy Center	Wisconsin Public Service Corp	Brownsville, WI	135 GWh	Jun 2008	Dec 2025	Wind
FPL Energy Crystal Lake Wind II LLC	FPL Energy Crystal Lake Wind II LLC	Britt, IA	722 GWh	Dec 2008	Dec 2025	Wind
FPL Energy Story Wind LLC	FPL Energy Story Wind LLC	Zearing, IA	538 GWh	Nov 2008	Dec 2025	Wind
FPL Energy Crystal Lake Wind LLC	FPL Energy Crystal Lake Wind LLC	Britt, IA	585 GWh	Nov 2008	Dec 2025	Wind
Mosaic Phosphates Uncle Sam	Mosaic Phosphates Co.	Uncle Sam, LA	77 GWh	Dec 1967	Dec 2025	Waste Heat
Osceola Windpower II	Osceola Windpower II	Harris, IA	200 GWh	Aug 2008	Dec 2025	Wind
French Island	Northern States Power Co - Minnesota	La Cross, WI	59 GWh	Dec 1939	Dec 2025	Wood/Wood Waste Solids : 48.5% Non-biogenic Municipal Solid Waste : 28.0% Biogenic Municipal Solid Waste : 22.9%
CF Industries Yazoo City Complex	CF Industries Nitrogen LLC	Yazoo City, MS	140 GWh	Jun 1984	Dec 2025	Natural Gas
Covanta Hennepin Energy	Covanta Energy Co	Minneapolis, MN	169 GWh	Sep 1989	Dec 2025	Non-biogenic Municipal Solid Waste : 54.6% Biogenic Municipal Solid Waste : 44.6% Natural Gas : 0.8%
Coyote	Otter Tail Power Co	Beulah, ND	2 TWh	Apr 1981	Dec 2025	Lignite Coal : 99.7%
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%
Diesel Generators	Madison Gas & Electric Co	Madison, WI	861 MWh	May 2001	Dec 2025	Distillate Fuel Oil
Fenton Wind Farm	EDF Renewable Asset Holdings, Inc.	Chandler, MN	388 GWh	Aug 2007	Dec 2025	Wind
Port Washington Generating Station	Wisconsin Electric Power Co	Port Washington, WI	7 TWh	Jun 2005	Dec 2025	Natural Gas
South Oak Creek	Wisconsin Electric Power Co	Oak Creek, WI	2 TWh	Nov 1959	Dec 2025	Subbituminous Coal : 99.6%
Valley (WI)	Wisconsin Electric Power Co	Milwaukee, WI	370 GWh	May 1968	Dec 2025	Natural Gas
Arkansas Nuclear One	Entergy Arkansas LLC	Russellville, AR	15 TWh	Nov 1974	Dec 2025	Nuclear
Emery Station	Interstate Power and Light Co	Clear Lake, IA	2 TWh	Apr 2004	Dec 2025	Natural Gas
Point Beach Nuclear Plant	NextEra Energy Point Beach LLC	Two Rivers, WI	10 TWh	May 1969	Dec 2025	Nuclear
Edgewater	Wisconsin Power & Light Co	Sheboygan, WI	2 TWh	Jun 1951	Dec 2025	Subbituminous Coal : 99.9%
Manitowoc	Manitowoc Public Utilities	Manitowoc, WI	178 GWh	May 1955	Dec 2025	Wood/Wood Waste Solids : 90.5% Petroleum Coke : 5.3% Bituminous Coal : 3.9%
Columbia (WI)	Wisconsin Power & Light Co	Pardeville, WI	6 TWh	Apr 1975	Dec 2025	Subbituminous Coal : 99.9%
New Badger	City of Kaukauna	Kaukauna, WI	44 GWh	Dec 2013	Dec 2025	Water
Pioneer Prairie Wind Farm	Pioneer Prairie Wind Farm I, LLC	McIntire, IA	859 GWh	Sep 2008	Dec 2025	Wind
Butler Ridge	Butler Ridge Wind Energy Center	Mayville, WI	142 GWh	Jan 2009	Dec 2025	Wind
Buffalo Ridge I LLC	Avangrid Power LLC	Elkton, SD	106 GWh	Mar 2009	Dec 2025	Wind
Pulliam	Wisconsin Public Service Corp	Green Bay, WI	110 GWh	Aug 1949	Dec 2025	Natural Gas
Spiritwood Station	Great River Energy	Spiritwood, ND	186 GWh	Oct 2014	Dec 2025	Natural Gas : 51.7% Refined Coal : 48.3%
Tatanka Wind Power LLC	Acciona Wind Energy USA LLC	Ashley, ND	476 GWh	Dec 2007	Dec 2025	Wind
Weston	Wisconsin Public Service Corp	Rothschild, WI	5 TWh	Nov 1954	Dec 2025	Subbituminous Coal : 99.4% Natural Gas : 0.6%
Central Michigan University	Central Michigan University	Mt. Pleasant, MI	30 GWh	Nov 1987	Dec 2025	Natural Gas
Prairie State Solar Project	Prairie State Solar, LLC	Swanwick Township, IL	220 GWh	Jun 2021	Dec 2025	Solar
Assembly Solar Project	Assembly Solar I, LLC	Venice Township, MI	100 GWh	Nov 2020	Dec 2025	Solar
Assembly Solar II LLC	Assembly Solar II LLC	Lennon, MI	226 GWh	Nov 2021	Dec 2025	Solar
Clinton LFGTE	Wabash Valley Power Assn, Inc	Clinton, IL	16 GWh	Jan 2006	Dec 2025	Landfill Gas
Emmons-Logan Wind, LLC	Emmons-Logan Wind, LLC	Linton, ND	877 GWh	Nov 2019	Dec 2025	Wind
St. Paul Intl Airport Red & Blue Parking	Metropolitan Airports Commission	St. Paul, MN	3 GWh	Nov 2015	Dec 2025	Solar
Nobles 2 Wind Project	Nobles 2 Power Partners, LLC	Wilmont, MN	974 GWh	Nov 2020	Dec 2025	Wind
Holliday Creek Solar	MidAmerican Energy Co	Fort Dodge, IA	209 GWh	Jun 2022	Dec 2025	Solar

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