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	Oct 2026
Annual Generation	677.7 TWh
Power Plants	3,095
Utilities	1,372
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 \| 37.1% Coal \| 26.2% Wind \| 15% Nuclear \| 13.8% Solar \| 6.1% 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
Branch Solar Project	Branch Solar, LLC	Coldwater, MI	83 GWh	-	Jul 2026	Solar
Blue Bird Solar, LLC	Blue Bird Solar, LLC	Warrenton, MO	327 GWh	Nov 2024	Jul 2026	Solar
Genesee Solar Project	Genesee Solar Energy, LLC	Flint, MI	42 GWh	Nov 2025	Jul 2026	Solar
Delta's Edge Solar	Cubico USA, LLC	Greenwood, MS	163 GWh	Oct 2023	Jul 2026	Solar
Posey Solar	Southern Indiana Gas & Elec Co	Mount Vernon, IN	405 GWh	Apr 2025	Jul 2026	Solar
Prairie Creek Solar	Sol Systems	Jacksonville, IL	59 GWh	Oct 2023	Jul 2026	Solar
Indiana Crossroads Wind Farm II	Indiana Crossroads Wind Farm II LLC	Wolcott, IN	604 GWh	Nov 2024	Jul 2026	Wind
Prescott Wind Farm	Prescott Wind Energy LLC	Prescott, IA	168 GWh	Aug 2024	Jul 2026	Wind
Umbriel Solar	Umbriel Solar, LLC	Livington, TX	317 GWh	Sep 2023	Jul 2026	Solar
Magnolia Power	Magnolia Power Holdings LLC	Plaquemine, LA	3 TWh	Nov 2025	Jul 2026	Natural Gas
River Fork Solar, LLC	River Fork Solar, LLC	Albion, MI	291 GWh	Sep 2024	Jul 2026	Solar
Quartz Solar, LLC	RWE Clean Energy	Wynne, AR	293 GWh	Feb 2025	Jul 2026	Solar
Sunlight Road Solar	Sunlight Road Solar, LLC	Franklinton, LA	115 GWh	Oct 2024	Jul 2026	Solar
Forgeview Solar	Forgeview Solar, LLC	Blytheville, AR	322 GWh	Nov 2025	Jul 2026	Solar
Flat Fork Solar	Flat Fork Solar, LLC	Wheatley, AR	444 GWh	Jul 2025	Jul 2026	Solar
Amite Solar, LLC	Amite Solar, LLC	Roseland, LA	208 GWh	Feb 2025	Jul 2026	Solar
Bayou Galion Solar Project	Bayou Galion Solar Project, LLC	Mer Rouge, LA	208 GWh	Oct 2024	Jul 2026	Solar
Pleasant Creek Unit 1	Interstate Power and Light Co	Palo, IA	98 GWh	Feb 2024	Jul 2026	Solar
Liberty County Solar Project	Liberty County Solar Project, LLC	Dayton, TX	245 GWh	Aug 2024	Jul 2026	Solar
Unbridled Solar	Geronimo Power	Robards, KY	317 GWh	Feb 2025	Jul 2026	Solar
Louise Solar	Geronimo Power	Taopi, MN	92 GWh	Nov 2024	Jul 2026	Solar
Fillmore County Solar Project	Geronimo Power	Spring Valley, MN	82 GWh	Nov 2024	Jul 2026	Solar
Cavalry Solar Hybrid	Cavalry Energy Center LLC	Monon, IN	367 GWh	Apr 2024	Jul 2026	Solar
Walnut Bend Solar Station PV	Entergy Arkansas LLC	Moro, AR	203 GWh	Aug 2024	Jul 2026	Solar
Heartwood Solar	Heartwood Solar, LLC	Allen, MI	26 GWh	-	Jun 2026	Solar
Split Rail Solar Energy LLC	Invenergy Services LLC	Warrenton, MO	171 GWh	-	Jun 2026	Solar
Merom	Hallador Power Company, LLC	Sullivan, IN	4 TWh	Jan 1982	Jun 2026	Bituminous Coal : 99.6%
Hot Spring Generating Facility	Entergy Arkansas LLC	Malvern, AR	3 TWh	May 2002	Jun 2026	Natural Gas
St. Paul Intl Airport Red & Blue Parking	Metropolitan Airports Commission	St. Paul, MN	2 GWh	Nov 2015	Jun 2026	Solar
Gary Works	United States Steel-Gary	Gary, IN	995 GWh	Mar 1997	May 2026	Blast Furnace Gas : 57.0% Natural Gas : 43.0%
Southern Minnesota Beet Sugar	Southern Minnesota Beet Sugar	Renville, MN	28 GWh	Aug 1976	May 2026	Subbituminous Coal : 70.1% Natural Gas : 29.2% Residual Fuel Oil : 0.6%
Kindred School	Kindred Public School	Kindred, ND	216 MWh	Sep 2001	Apr 2026	Distillate Fuel Oil
Valley Queen Cheese	Valley Queen Cheese Factory, Inc.	Milbank, SD	20 MWh	Mar 2002	Apr 2026	Distillate Fuel Oil
Iowa Lakes Community College Wind Farm	Iowa Lakes Community College	Estherville, IA	374 MWh	Jan 2005	Apr 2026	Wind
MSC Sebewaing	Michigan Sugar Company	Sebewaing, MI	509 MWh	Sep 1979	Mar 2026	Bituminous Coal : 67.9% Natural Gas : 32.1%
Carpenter	Entergy Arkansas LLC	Hot Springs, AR	147 GWh	Dec 1931	Dec 2025	Water
Lake Catherine	Entergy Arkansas LLC	Jones Mill, AR	336 GWh	Mar 1970	Dec 2025	Natural Gas
Remmel	Entergy Arkansas LLC	Malvern, AR	46 GWh	Dec 1924	Dec 2025	Water
Blakely Mountain	USCE -Vickburg District	Royal, AR	216 GWh	Aug 1955	Dec 2025	Water
Prairie River	ALLETE, Inc.	Grand Rapids, MN	2 GWh	Mar 1920	Dec 2025	Water
Moline	MidAmerican Energy Co	Moline, IL	21 GWh	Dec 1941	Dec 2025	Water : 97.0% Natural Gas : 3.0%
Rockton	Eagle Creek Renewable Energy, LLC	Rockton, IL	6 GWh	Dec 1928	Dec 2025	Water
Venice	Union Electric Co - (MO)	Venice, IL	18 GWh	May 2002	Dec 2025	Natural Gas
Breese	City of Breese - (IL)	Breese, IL	539 MWh	Nov 1953	Dec 2025	Distillate Fuel Oil
Bushnell	City of Bushnell - (IL)	Bushnell, IL	78 MWh	May 1940	Dec 2025	Distillate Fuel Oil
Carlyle	City of Carlyle - (IL)	Carlyle, IL	208 MWh	Jul 1964	Dec 2025	Distillate Fuel Oil
Carmi	City of Carmi - (IL)	Carmi, IL	92 MWh	Nov 1948	Dec 2025	Distillate Fuel Oil
Farmer City	City of Farmer City - (IL)	Farmer City, IL	59 MWh	Mar 1951	Dec 2025	Distillate Fuel Oil
Freeburg	Village of Freeburg - (IL)	Freeburg, IL	145 MWh	Jul 1948	Dec 2025	Distillate Fuel Oil
Highland	City of Highland - (IL)	Highland, IL	222 MWh	Feb 1967	Dec 2025	Distillate Fuel Oil
McLeansboro	City of McLeansboro - (IL)	McLeansboro, IL	42 MWh	Nov 1950	Dec 2025	Distillate Fuel Oil
Marshall (IL)	City of Marshall - (IL)	Marshall, IL	167 MWh	Mar 2002	Dec 2025	Distillate Fuel Oil
Princeton (IL)	City of Princeton - (IL)	Princeton, IL	813 MWh	Jun 1953	Dec 2025	Natural Gas : 99.8%
Red Bud	City of Red Bud - (IL)	Red Bud, IL	262 MWh	Feb 1959	Dec 2025	Distillate Fuel Oil
Reynolds	City of Springfield - (IL)	Springfield, IL	179 MWh	Oct 1970	Dec 2025	Distillate Fuel Oil
Waterloo	City of Waterloo - (IL)	Waterloo, IL	751 MWh	May 1946	Dec 2025	Natural Gas : 73.6% Distillate Fuel Oil : 26.4%
Norway (IN)	Northern Indiana Pub Serv Co	Monticello, IN	12 GWh	May 1923	Dec 2025	Water
Markland	Duke Energy Indiana, LLC	Florence, IN	253 GWh	Dec 1966	Dec 2025	Water
Noblesville	Duke Energy Indiana, LLC	Noblesville, IN	2 TWh	Aug 1950	Dec 2025	Natural Gas
Marshalltown	Interstate Power and Light Co	Marshalltown, IA	20 GWh	May 1978	Dec 2025	Natural Gas
Coralville GT	MidAmerican Energy Co	Coralville, IA	2 GWh	May 1970	Dec 2025	Natural Gas
River Hills	MidAmerican Energy Co	Des Moines, IA	2 GWh	Apr 1966	Dec 2025	Natural Gas
Merl Parr	MidAmerican Energy Co	Charles City, IA	3 GWh	Apr 1969	Dec 2025	Natural Gas
Keokuk	Union Electric Co - (MO)	Keokuk, IA	962 GWh	Jul 1913	Dec 2025	Water
Ames Electric Services Power Plant	City of Ames - (IA)	Ames, IA	285 GWh	Apr 1968	Dec 2025	Natural Gas : 91.0% Other Biomass Solids : 9.0%
Anita	City of Anita - (IA)	Anita, IA	77 MWh	Sep 1939	Dec 2025	Distillate Fuel Oil
Atlantic	Atlantic Municipal Utilities (IA)	Atlantic, IA	115 MWh	Aug 1966	Dec 2025	Natural Gas
Bancroft	Bancroft Municipal Utilities - (IA)	Bancroft, IA	22 MWh	Dec 1947	Dec 2025	Distillate Fuel Oil
Bellevue	City of Bellevue - (IA)	Bellevue, IA	10 MWh	Jun 1947	Dec 2025	Distillate Fuel Oil
Brooklyn	City of Brooklyn - (IA)	Brooklyn, IA	14 MWh	Aug 2012	Dec 2025	Distillate Fuel Oil
Cascade	Cascade Municipal Utilities - (IA)	Cascade, IA	31 MWh	Mar 1951	Dec 2025	Distillate Fuel Oil
Gas Turbine (IA)	Cedar Falls Utilities	Cedar Falls, IA	1 GWh	Dec 1967	Dec 2025	Natural Gas
Streeter Station	Cedar Falls Utilities	Cedar Falls, IA	14 GWh	Aug 1963	Dec 2025	Natural Gas : 96.4% Bituminous Coal : 3.6%
Coggon	Coggon Municipal Light Plant - (IA)	Coggon, IA	38 MWh	Sep 1957	Dec 2025	Distillate Fuel Oil
Corning	City of Corning - (IA)	Corning, IA	6 MWh	May 1975	Dec 2025	Distillate Fuel Oil
Dayton (IA)	City of Dayton - (IA)	Dayton, IA	2 MWh	Sep 2000	Dec 2025	Distillate Fuel Oil
Forest City Light Plant	City of Forest City- (IA)	Forest City, IA	392 MWh	Dec 1945	Dec 2025	Distillate Fuel Oil
Gowrie	Gowrie Municipal Utilities - (IA)	Gowrie, IA	3 MWh	Dec 2012	Dec 2025	Distillate Fuel Oil
Graettinger	City of Graettinger - (IA)	Graettinger, IA	49 MWh	Jul 1957	Dec 2025	Distillate Fuel Oil
Grand Junction	City of Grand Junction - (IA)	Grand Junction, IA	41 MWh	Nov 1994	Dec 2025	Distillate Fuel Oil
Grundy Center City Light Plant	Grundy Center Mun Light & Power	Grundy Center, IA	109 MWh	Oct 1963	Dec 2025	Distillate Fuel Oil
Harlan	Harlan Municipal Utilities - (IA)	Harlan, IA	1 MWh	Jun 2001	Dec 2025	Distillate Fuel Oil
Lake Park	City of Lake Park - (IA)	Lake Park, IA	16 MWh	Mar 2005	Dec 2025	Distillate Fuel Oil
Lake Mills	City of Lake Mills - (IA)	Lake Mills, IA	99 MWh	Dec 1955	Dec 2025	Distillate Fuel Oil
Lamoni Municipal Utilities	City of Lamoni - (IA)	Lamoni, IA	45 MWh	Feb 1940	Dec 2025	Distillate Fuel Oil
La Porte	La Porte City Utilities	La Porte City, IA	162 MWh	Nov 2000	Dec 2025	Distillate Fuel Oil
Lenox	City of Lenox - (IA)	Lenox, IA	55 MWh	Aug 1948	Dec 2025	Distillate Fuel Oil
McGregor	City of McGregor- (IA)	McGregor, IA	11 MWh	Nov 1941	Dec 2025	Distillate Fuel Oil
Montezuma	City of Montezuma - (IA)	Montezuma, IA	115 MWh	Jul 1940	Dec 2025	Distillate Fuel Oil : 67.9% Natural Gas : 32.1%
Ogden	City of Ogden - (IA)	Ogden, IA	73 MWh	Jun 1951	Dec 2025	Distillate Fuel Oil
Osage (IA)	City of Osage - (IA)	Osage, IA	5 GWh	Aug 1963	Dec 2025	Wind : 81.8% Solar : 18.2%
Ottumwa City of	City of Ottumwa - (IA)	Ottumwa, IA	3 GWh	Jul 1931	Dec 2025	Water
Preston (IA)	City of Preston - (IA)	Preston, IA	9 MWh	Nov 1968	Dec 2025	Natural Gas : 85.1% Distillate Fuel Oil : 14.9%
Rockford	City of Rockford- (IA)	Rockford, IA	6 MWh	Jul 1951	Dec 2025	Distillate Fuel Oil
Sibley One	City of Sibley - (IA)	Sibley, IA	174 MWh	Aug 1971	Dec 2025	Distillate Fuel Oil : 65.0% Natural Gas : 35.0%
Spencer Gas Turbine	City of Spencer - (IA)	Spencer, IA	86 MWh	Dec 1969	Dec 2025	Kerosene
State Center	City of State Center - (IA)	State Center, IA	153 MWh	Jul 1972	Dec 2025	Distillate Fuel Oil : 72.4% Natural Gas : 27.6%
Story City	City of Story City - (IA)	Story City, IA	315 MWh	Dec 1963	Dec 2025	Distillate Fuel Oil : 87.0% Natural Gas : 13.0%
Sumner	City of Sumner - (IA)	Sumner, IA	55 MWh	Jul 1956	Dec 2025	Distillate Fuel Oil
Traer Main	City of Traer - (IA)	Traer, IA	65 MWh	Dec 1962	Dec 2025	Distillate Fuel Oil : 98.5% Natural Gas : 1.5%

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#61	Alcoa Power Generating, Inc. - Yadkin Division	433.0 GWh	4
#26	Associated Electric Cooperative, Inc.	22.9 TWh	47
#13	Duke Energy Carolinas	113.4 TWh	578
#50	Duke Energy Progress West	4.6 TWh	15
#23	Louisville Gas and Electric Company and Kentucky Utilities Company	34.2 TWh	25
#1	PJM Interconnection, LLC	890.9 TWh	2,806
#6	Southern Company Services, Inc. - Trans	259.3 TWh	423
#5	Southwest Power Pool	314.5 TWh	876
#53	Southwestern Power Administration	3.5 TWh	37
#9	Tennessee Valley Authority	166.2 TWh	209

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#1	PJM Interconnection, LLC	890.9 TWh	2,806
#2	Midcontinent Independent System Operator, Inc.	677.7 TWh	3,095
#3	Electric Reliability Council of Texas, Inc.	506.3 TWh	1,487
#5	Southwest Power Pool	314.5 TWh	876
#6	Southern Company Services, Inc. - Trans	259.3 TWh	423
#7	California Independent System Operator	168.7 TWh	2,170
#9	Tennessee Valley Authority	166.2 TWh	209
#10	Florida Power & Light Co.	153.0 TWh	188
#12	New York Independent System Operator	134.1 TWh	1,334
#13	Duke Energy Carolinas	113.4 TWh	578