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
Callaway	Union Electric Co - (MO)	Fulton, MO	7 TWh	Nov 1984	Feb 2026	Nuclear
A B Brown	Southern Indiana Gas & Elec Co	Mount Vernon, IN	653 GWh	Feb 1979	Feb 2026	Natural Gas
Purdue University	Purdue University	West Lafayette, IN	99 GWh	Dec 1968	Feb 2026	Natural Gas : 92.5% Bituminous Coal : 7.5%
Gibson	Duke Energy Indiana, LLC	Owensville, IN	10 TWh	Mar 1975	Feb 2026	Bituminous Coal : 99.6%
Dow St Charles Operations	Dow Chemical Co - St Charles	Taft, LA	2 TWh	Nov 1996	Feb 2026	Natural Gas : 99.2% Other Gas : 0.8%
Rolling Hills Wind Farm	MidAmerican Energy Co	Massena, IA	2 TWh	Nov 2011	Feb 2026	Wind
Big Stone	Otter Tail Power Co	Big Stone City, SD	2 TWh	Apr 1975	Feb 2026	Subbituminous Coal : 99.8%
University of Northern Iowa	University of Northern Iowa	Cedar Falls, IA	21 GWh	Oct 1982	Feb 2026	Natural Gas : 73.9% Petroleum Coke : 17.1% Bituminous Coal : 8.9%
Garden Wind LLC	Garden Wind LLC	Zearing, IA	359 GWh	Nov 2009	Feb 2026	Wind
Crystal Lake 3 LLC	Crystal Lake 3 LLC	Britt, IA	228 GWh	Nov 2009	Feb 2026	Wind
Pine Tree Acres WM LFGTE	WM Renewable Energy LLC	Lenox, MI	89 GWh	Feb 2012	Feb 2026	Landfill Gas
Sherburne County	Northern States Power Co - Minnesota	Becker, MN	7 TWh	Mar 1976	Feb 2026	Subbituminous Coal : 99.8%
Lewis & Clark	Montana-Dakota Utilities Co	Richland, MT	12 GWh	Sep 1958	Feb 2026	Natural Gas
Buffalo Ridge II LLC	Avangrid Power LLC	Elkton, SD	442 GWh	Nov 2010	Feb 2026	Wind
Gratiot Wind Park	DTE Electric Company	Breckenridge, MI	235 GWh	Oct 2011	Feb 2026	Wind
Archer Daniels Midland Decatur	Archer Daniels Midland Co	Decatur, IL	908 GWh	Mar 1987	Feb 2026	Bituminous Coal : 61.6% Subbituminous Coal : 38.1%
Smithland Hydroelectric Plant	American Mun Power-Ohio, Inc	Smithland, KY	371 GWh	Jun 2017	Feb 2026	Water
Archer Daniels Midland Cedar Rapids	Archer Daniels Midland Co	Cedar Rapids, IA	981 GWh	Oct 1988	Feb 2026	Subbituminous Coal : 59.7% Natural Gas : 24.0% Bituminous Coal : 16.2%
Cannon Falls Energy Center	Invenergy Services LLC	Cannon Falls, MN	895 GWh	Mar 2008	Feb 2026	Natural Gas : 99.1% Distillate Fuel Oil : 0.9%
Archer Daniels Midland Clinton	Archer Daniels Midland Co	Clinton, IA	705 GWh	Jan 2009	Feb 2026	Subbituminous Coal : 87.9% Other Biomass Solids : 7.5% Bituminous Coal : 4.6%
Riverside Energy Center	Wisconsin Power & Light Co	Beloit, WI	3 TWh	May 2004	Feb 2026	Natural Gas
R M Schahfer	Northern Indiana Pub Serv Co	Wheatfield, IN	1 TWh	Nov 1976	Feb 2026	Bituminous Coal : 94.3% Natural Gas : 5.7%
Lakefield Wind Project LLC	EDF Renewable Asset Holdings, Inc.	Lakefield, MN	383 GWh	Sep 2011	Feb 2026	Wind
Grand Gulf	System Energy Resources, Inc	Port Gibson, MS	11 TWh	Jun 1985	Feb 2026	Nuclear
Sabine River Operations	The Dow Chemical Company	Orange, TX	3 TWh	Dec 1947	Feb 2026	Natural Gas : 99.4% Other Gas : 0.6%
Midland Cogeneration Venture	Midland Cogeneration Venture	Midland, MI	10 TWh	May 1989	Feb 2026	Natural Gas
Magnet Cove	Arkansas Electric Coop Corp	Malvern, AR	3 TWh	Jun 2005	Feb 2026	Natural Gas
OREG 3 Inc	Ormat Nevada Inc	Trimont, MN	44 GWh	Jul 2010	Feb 2026	Waste Heat
Montfort Wind Energy Center	Wisconsin Electric Power Co	Montfort, WI	54 GWh	May 2002	Feb 2026	Wind
R D Morrow	Cooperative Energy	Purvis, MS	3 TWh	Mar 1978	Feb 2026	Natural Gas
Glacier Hills	Wisconsin Electric Power Co	Cambria, WI	358 GWh	Nov 2011	Feb 2026	Wind
Big Cajun 2	Louisiana Generating LLC	New Roads, LA	2 TWh	Jun 1981	Feb 2026	Subbituminous Coal : 70.8% Natural Gas : 29.2%
Greenwood (MI)	DTE Electric Company	Avoca, MI	1 TWh	Jun 1979	Feb 2026	Natural Gas
Elk River	Great River Energy	Elk River, MN	147 GWh	Dec 1950	Feb 2026	Natural Gas : 90.3% Distillate Fuel Oil : 9.7%
Belle River	DTE Electric Company	China Twp, MI	5 TWh	Oct 1981	Feb 2026	Subbituminous Coal : 90.5% Natural Gas : 9.0%
MNDOT Standby Generation	State of Minnesota Department of Administration	St. Paul, MN	52 MWh	Jun 1995	Feb 2026	Distillate Fuel Oil
Moselle	Cooperative Energy	Moselle, MS	2 TWh	Jul 1970	Feb 2026	Natural Gas
Coal Creek	Rainbow Energy Center	Underwood, ND	8 TWh	May 1979	Feb 2026	Refined Coal : 99.9%
Labadie	Union Electric Co - (MO)	Labadie, MO	17 TWh	May 1970	Feb 2026	Subbituminous Coal
Prairie State Generating Station	Prairie State Generating Co LLC	Marissa, IL	12 TWh	May 2012	Feb 2026	Bituminous Coal : 99.8%
Sioux	Union Electric Co - (MO)	West Alton, MO	4 TWh	Apr 1967	Feb 2026	Subbituminous Coal : 77.4% Bituminous Coal : 22.5%
International Falls Power	Boise White Paper LLC	International Falls, MN	54 GWh	Dec 1923	Feb 2026	Water
Quilt Block Wind Farm LLC	Quilt Block Wind Farm LLC	Darlington, WI	371 GWh	Aug 2017	Feb 2026	Wind
Boise Cascade International Falls	Boise White Paper LLC	International Falls, MN	333 GWh	Dec 1926	Feb 2026	Black Liquor : 63.6% Natural Gas : 22.2% Wood/Wood Waste Solids : 12.8% Sludge Waste : 1.3%
Expander Turbine	Cleveland Cliffs	East Chicago, IN	87 GWh	Apr 1981	Feb 2026	Blast Furnace Gas
Granite City Works	United States Steel Granite City Works	Granite City, IL	459 GWh	May 2010	Feb 2026	Natural Gas : 50.8% Purchased Steam : 49.2%
R M Heskett	Montana-Dakota Utilities Co	Mandan, ND	55 GWh	Oct 1954	Feb 2026	Natural Gas
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%
Merricourt Wind Energy Center	Otter Tail Power Co	Kulm, ND	555 GWh	Nov 2020	Feb 2026	Wind
Lewis Creek	Entergy Texas Inc.	Willis, TX	2 TWh	Nov 1970	Feb 2026	Natural Gas
Nobles Wind Project	Northern States Power Co - Minnesota	Reading, MN	801 GWh	Nov 2010	Feb 2026	Wind
Anheuser-Busch St Louis	Anheuser-Busch Inc	St. Louis, MO	40 GWh	Dec 1938	Feb 2026	Natural Gas : 93.3% Other Biomass Gas : 6.7%
White Bluff	Entergy Arkansas LLC	Redfield, AR	3 TWh	Jul 1980	Feb 2026	Subbituminous Coal : 99.5%
John P Madgett	Dairyland Power Coop	Alma, WI	1 TWh	Oct 1979	Feb 2026	Subbituminous Coal : 99.5%
Consumer Operations LLC	Georgia-Pacific Consumer Oper. Green Bay LLC	Green Bay, WI	228 GWh	Dec 1953	Feb 2026	Natural Gas
T B Simon Power Plant	Michigan State University	East Lansing, MI	252 GWh	Nov 1965	Feb 2026	Natural Gas
Waterford 3	Entergy Louisiana LLC	Killona, LA	9 TWh	Aug 1985	Feb 2026	Nuclear
Hancock County Wind Energy Center	FPL Energy Hancock County Wind, LLC	Garner, IA	251 GWh	Nov 2002	Feb 2026	Wind
Fox Energy Center	Wisconsin Public Service Corp	Wrightstown, WI	4 TWh	May 2005	Feb 2026	Natural Gas
Escanaba Mill	Billerud Escanaba LLC	Escanaba, MI	462 GWh	Dec 1968	Feb 2026	Black Liquor : 45.7% Natural Gas : 31.3% Wood/Wood Waste Solids : 22.3% Residual Fuel Oil : 0.7%
Forward Wind Energy Center	Wisconsin Public Service Corp	Brownsville, WI	132 GWh	Jun 2008	Feb 2026	Wind
FPL Energy Crystal Lake Wind II LLC	FPL Energy Crystal Lake Wind II LLC	Britt, IA	708 GWh	Dec 2008	Feb 2026	Wind
FPL Energy Story Wind LLC	FPL Energy Story Wind LLC	Zearing, IA	538 GWh	Nov 2008	Feb 2026	Wind
FPL Energy Crystal Lake Wind LLC	FPL Energy Crystal Lake Wind LLC	Britt, IA	573 GWh	Nov 2008	Feb 2026	Wind
Mosaic Phosphates Uncle Sam	Mosaic Phosphates Co.	Uncle Sam, LA	89 GWh	Dec 1967	Feb 2026	Waste Heat
Osceola Windpower II	Osceola Windpower II	Harris, IA	193 GWh	Aug 2008	Feb 2026	Wind
French Island	Northern States Power Co - Minnesota	La Cross, WI	67 GWh	Dec 1939	Feb 2026	Wood/Wood Waste Solids : 43.0% Non-biogenic Municipal Solid Waste : 25.7% Biogenic Municipal Solid Waste : 21.1% Distillate Fuel Oil : 9.9%
CF Industries Yazoo City Complex	CF Industries Nitrogen LLC	Yazoo City, MS	126 GWh	Jun 1984	Feb 2026	Natural Gas
Covanta Hennepin Energy	Covanta Energy Co	Minneapolis, MN	170 GWh	Sep 1989	Feb 2026	Non-biogenic Municipal Solid Waste : 54.5% Biogenic Municipal Solid Waste : 44.6% Natural Gas : 0.8%
Coyote	Otter Tail Power Co	Beulah, ND	2 TWh	Apr 1981	Feb 2026	Lignite Coal : 99.8%
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%
Diesel Generators	Madison Gas & Electric Co	Madison, WI	1 GWh	May 2001	Feb 2026	Distillate Fuel Oil
Fenton Wind Farm	EDF Renewable Asset Holdings, Inc.	Chandler, MN	382 GWh	Aug 2007	Feb 2026	Wind
Port Washington Generating Station	Wisconsin Electric Power Co	Port Washington, WI	7 TWh	Jun 2005	Feb 2026	Natural Gas
South Oak Creek	Wisconsin Electric Power Co	Oak Creek, WI	2 TWh	Nov 1959	Feb 2026	Subbituminous Coal : 99.5%
Valley (WI)	Wisconsin Electric Power Co	Milwaukee, WI	365 GWh	May 1968	Feb 2026	Natural Gas
Arkansas Nuclear One	Entergy Arkansas LLC	Russellville, AR	15 TWh	Nov 1974	Feb 2026	Nuclear
Emery Station	Interstate Power and Light Co	Clear Lake, IA	3 TWh	Apr 2004	Feb 2026	Natural Gas
Point Beach Nuclear Plant	NextEra Energy Point Beach LLC	Two Rivers, WI	10 TWh	May 1969	Feb 2026	Nuclear
Edgewater	Wisconsin Power & Light Co	Sheboygan, WI	2 TWh	Jun 1951	Feb 2026	Subbituminous Coal : 99.9%
Manitowoc	Manitowoc Public Utilities	Manitowoc, WI	179 GWh	May 1955	Feb 2026	Wood/Wood Waste Solids : 91.2% Petroleum Coke : 4.9% Bituminous Coal : 3.6%
Columbia (WI)	Wisconsin Power & Light Co	Pardeville, WI	6 TWh	Apr 1975	Feb 2026	Subbituminous Coal : 99.9%
New Badger	City of Kaukauna	Kaukauna, WI	45 GWh	Dec 2013	Feb 2026	Water
Pioneer Prairie Wind Farm	Pioneer Prairie Wind Farm I, LLC	McIntire, IA	840 GWh	Sep 2008	Feb 2026	Wind
Butler Ridge	Butler Ridge Wind Energy Center	Mayville, WI	142 GWh	Jan 2009	Feb 2026	Wind
Buffalo Ridge I LLC	Avangrid Power LLC	Elkton, SD	96 GWh	Mar 2009	Feb 2026	Wind
Pulliam	Wisconsin Public Service Corp	Green Bay, WI	111 GWh	Aug 1949	Feb 2026	Natural Gas
Spiritwood Station	Great River Energy	Spiritwood, ND	198 GWh	Oct 2014	Feb 2026	Natural Gas : 52.8% Refined Coal : 47.2%
Tatanka Wind Power LLC	Acciona Wind Energy USA LLC	Ashley, ND	436 GWh	Dec 2007	Feb 2026	Wind
Weston	Wisconsin Public Service Corp	Rothschild, WI	5 TWh	Nov 1954	Feb 2026	Subbituminous Coal : 99.4% Natural Gas : 0.6%
Central Michigan University	Central Michigan University	Mt. Pleasant, MI	29 GWh	Nov 1987	Feb 2026	Natural Gas
Assembly Solar Project	Assembly Solar I, LLC	Venice Township, MI	102 GWh	Nov 2020	Feb 2026	Solar
Assembly Solar II LLC	Assembly Solar II LLC	Lennon, MI	229 GWh	Nov 2021	Feb 2026	Solar
Prairie State Solar Project	Prairie State Solar, LLC	Swanwick Township, IL	225 GWh	Jun 2021	Feb 2026	Solar
Clinton LFGTE	Wabash Valley Power Assn, Inc	Clinton, IL	16 GWh	Jan 2006	Feb 2026	Landfill Gas
St. Paul Intl Airport Red & Blue Parking	Metropolitan Airports Commission	St. Paul, MN	3 GWh	Nov 2015	Feb 2026	Solar
Walnut Bend Solar Station PV	Walnut Bend Solar Station	Moro, AR	209 GWh	Aug 2024	Feb 2026	Solar
Cavalry Solar Hybrid	Cavalry Energy Center LLC	Monon, IN	366 GWh	Apr 2024	Feb 2026	Solar
Emmons-Logan Wind, LLC	Emmons-Logan Wind, LLC	Linton, ND	859 GWh	Nov 2019	Feb 2026	Wind

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