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	Jan 2026
Annual Generation	656.9 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 \| 35.4% Coal \| 28.9% Wind \| 15.1% Nuclear \| 14% Solar \| 4.6% 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
Hoot Lake Solar	Otter Tail Power Co	Fergus Falls, MN	72 GWh	Jul 2023	Oct 2025	Solar
Moraine II Wind LLC	Avangrid Power LLC	Woodstock, MN	73 GWh	Jan 2009	Dec 2024	Wind
Earp Solar, LLC	Birch Creek Power, LLC	Monmouth, IL	74 GWh	Mar 2024	Oct 2025	Solar
Heritage Garden Wind Farm I LLC	DTE Sustainable Generation	Garden, MI	75 GWh	Aug 2012	Dec 2024	Wind
Appleseed Solar	Appleseed Solar, LLC	Logansport, IN	75 GWh	-	Oct 2025	Solar
MMSD Jones Island Wastewater	Milwaukee Metro Sewerage Dist	Milwaukee, WI	75 GWh	Dec 1970	Oct 2025	Natural Gas : 80.6% Landfill Gas : 18.2% Distillate Fuel Oil : 1.2%
Elk River	Great River Energy	Elk River, MN	76 GWh	Dec 1950	Oct 2025	Natural Gas : 99.1% Distillate Fuel Oil : 0.9%
Jonesboro City Water & Light Plant	City Water and Light Plant	Jonesboro, AR	78 GWh	Jun 1999	Dec 2024	Natural Gas : 99.3% Distillate Fuel Oil : 0.7%
Old Gold Energy Center, LLC	Old Gold Energy Center, LLC	Joice, IA	78 GWh	Sep 2001	Dec 2024	Wind
Archer Daniels Midland Peoria	BioUrja Renewables LLC	Peoria, IL	79 GWh	Dec 1987	Dec 2024	Natural Gas
Agrilectric Power Partners Ltd	Agrilectric Power Partners Ltd	Lake Charles, LA	79 GWh	Jun 1984	Dec 2024	Agricultural By-Products : 98.9% Natural Gas : 1.1%
Marshalltown	Interstate Power and Light Co	Marshalltown, IA	79 GWh	May 1978	Dec 2024	Natural Gas
Fillmore County Solar Project	National Grid Renewables	Spring Valley, MN	79 GWh	Nov 2024	Oct 2025	Solar
Omega Hills Gas Recovery	WM Renewable Energy LLC	Germantown, WI	80 GWh	Nov 1985	Oct 2025	Landfill Gas
Pinckneyville	Union Electric Co - (MO)	Pinckneyville, IL	80 GWh	May 2000	Dec 2024	Natural Gas
Coffeen Solar BESS	Vistra Corp	Coffeen, IL	80 GWh	Nov 2024	Oct 2025	Solar
Grandfather Falls	Wisconsin Public Service Corp	Irma, WI	80 GWh	Nov 1938	Dec 2024	Water
Pine Tree Acres WM LFGTE	WM Renewable Energy LLC	Lenox, MI	81 GWh	Feb 2012	Oct 2025	Landfill Gas
Iowa State University	Iowa State University	Ames, IA	81 GWh	Sep 1960	Oct 2025	Natural Gas
Flying Cloud Power Partners LLC	Avangrid Power LLC	Lake Park, IA	81 GWh	Nov 2003	Dec 2024	Wind
Metro Methane Recovery Facility	WM Renewable Energy LLC	Mitchellville, IA	81 GWh	Dec 1997	Oct 2025	Landfill Gas
Ridgewind	Ridgewind Power Partners LLC	Woodstock, MN	81 GWh	Dec 2010	Dec 2024	Wind
Blanchard	ALLETE, Inc.	Royalton, MN	82 GWh	Jan 1925	Dec 2024	Water
Rock Aetna Power Partners	Northern States Power Co - Minnesota	Woodstock, MN	82 GWh	Nov 2022	Dec 2024	Wind
Cornell	Northern States Power Co - Minnesota	Chippewa Falls, WI	82 GWh	Jun 1976	Dec 2024	Water
Sebree Solar, LLC - Hybrid	Sebree Solar, LLC	Robards, KY	83 GWh	-	Oct 2025	Solar
Storm Lake 1	ALLETE Clean Energy	Alta, IA	85 GWh	Apr 1999	Dec 2024	Wind
Weston RICE	Wisconsin Public Service Corp	Kronenwetter, WI	85 GWh	Jun 2023	Dec 2024	Natural Gas
Ewington Energy Systems, LLC	Ewington Energy Systems, LLC	Worthington, MN	86 GWh	Dec 2007	Dec 2024	Wind
Envoy Solar, LLC	Birch Creek Power, LLC	Mexico, MO	86 GWh	-	Oct 2025	Solar
Pleasant Valley (MN)	Great River Energy	Dexter, MN	86 GWh	Apr 2001	Dec 2024	Natural Gas : 99.3% Distillate Fuel Oil : 0.7%
Expander Turbine	Cleveland Cliffs	East Chicago, IN	86 GWh	Apr 1981	Oct 2025	Blast Furnace Gas
Diamond Willow Wind Facility	Montana-Dakota Utilities Co	Baker, MT	86 GWh	Nov 2007	Dec 2024	Wind
Trigen St. Louis	Centerstream STL, LLC	St Louis, MO	86 GWh	May 1999	Jul 2025	Natural Gas
American Crystal Sugar Hillsboro	American Crystal Sugar Co	Hillsboro, ND	87 GWh	Aug 1990	Dec 2024	Subbituminous Coal
Purdue University	Purdue University	West Lafayette, IN	87 GWh	Dec 1968	Oct 2025	Natural Gas : 91.3% Bituminous Coal : 8.7%
Louise Solar	National Grid Renewables	Taopi, MN	89 GWh	Nov 2024	Oct 2025	Solar
Big Quinnesec 92	Wisconsin Electric Power Co	Iron Mountain, MI	89 GWh	Oct 1949	Dec 2024	Water
Twin Cities Hydro LLC	Twin Cities Hydro LLC	St. Paul, MN	90 GWh	Sep 1924	Dec 2024	Water
Prairie Creek	Interstate Power and Light Co	Cedar Rapids, IA	90 GWh	Sep 1958	Oct 2025	Subbituminous Coal : 64.4% Natural Gas : 35.6%
Crossover Wind	Crossover Wind, LLC	Wynne, AR	91 GWh	-	Oct 2025	Wind
Delray	DTE Electric Company	Detroit, MI	91 GWh	Jan 2000	Nov 2024	Natural Gas
PCA, Filer City Mill	PCA, Filer City Mill	Filer City, MI	91 GWh	Dec 1949	Oct 2025	Natural Gas
Castle Rock	Wisconsin River Power Company	Adams, WI	92 GWh	Jul 1950	Dec 2024	Water
491 E 48th Street	City of Holland	Holland, MI	92 GWh	Apr 1992	Dec 2024	Natural Gas
Holcombe	Northern States Power Co - Minnesota	Holcombe, WI	93 GWh	Dec 1949	Dec 2024	Water
Dan E Karn	Consumers Energy Co - (MI)	Essexville, MI	93 GWh	Oct 1959	Oct 2025	Natural Gas : 93.1% Residual Fuel Oil : 6.9%
G McNeilus Wind Farm Dodge Center	Justin McNeilus	Dodge Center, MN	94 GWh	Aug 2002	Dec 2024	Wind
Calcasieu	Entergy Louisiana LLC	Sulphur, LA	94 GWh	Apr 2000	Nov 2024	Natural Gas
Salt Creek Township Solar, LLC	Birch Creek Power, LLC	Mason City, IL	95 GWh	-	Oct 2025	Solar
Langdon Wind Energy Center	Otter Tail Power Co	Langdon, ND	95 GWh	Nov 2007	Dec 2024	Wind
Troy Solar	Southern Indiana Gas & Elec Co	Troy, IN	95 GWh	Mar 2021	Oct 2025	Solar
Marshall Solar Energy Project	Marshall Solar Energy Project	Marshall, MN	95 GWh	Dec 2016	Oct 2025	Solar
Biron Mill	ND Paper, Inc.	Wisconsin Rapids, WI	96 GWh	Aug 1947	Dec 2024	Natural Gas : 79.6% Subbituminous Coal : 20.4%
Cassville Solar	Wisconsin Power & Light Co	Cassville, WI	96 GWh	Nov 2023	Oct 2025	Solar
Creston Solar (50 MW)	Interstate Power and Light Co	Creston, IA	96 GWh	Sep 2024	Oct 2025	Solar
Genesee Power Station LP	NorthStar Clean Energy	Flint, MI	96 GWh	Nov 1995	Dec 2024	Wood/Wood Waste Solids : 99.9%
Albany Solar (WI)	Wisconsin Power & Light Co	Broadhead, WI	97 GWh	Nov 2023	Oct 2025	Solar
Pleasant Creek Unit 1	Interstate Power and Light Co	Palo, IA	97 GWh	Feb 2024	Oct 2025	Solar
Wilmarth	Northern States Power Co - Minnesota	Mankato, MN	98 GWh	Aug 1948	Oct 2025	Non-biogenic Municipal Solid Waste : 54.3% Biogenic Municipal Solid Waste : 44.4% Natural Gas : 1.2%
Assembly Solar Project	Assembly Solar I, LLC	Venice Township, MI	99 GWh	Nov 2020	Oct 2025	Solar
Beaver Dam Solar	Wisconsin Power & Light Co	Dodge, WI	99 GWh	Nov 2023	Oct 2025	Solar
Bear Creek (WI)	Wisconsin Power & Light Co	Lone Rock, WI	99 GWh	Aug 2022	Oct 2025	Solar
North Rock	Wisconsin Power & Light Co	Edgerton, WI	99 GWh	Sep 2022	Oct 2025	Solar
M L Hibbard	ALLETE, Inc.	Duluth, MN	99 GWh	May 1949	Oct 2025	Wood/Wood Waste Solids : 93.1% Subbituminous Coal : 6.0% Natural Gas : 0.8%
Oak Point Cogen	Chevron Oronite Co LLC	Belle Chasse, LA	99 GWh	Sep 1999	Dec 2024	Natural Gas
Kent County Waste to Energy Facility	Kent County	Grand Rapids, MI	99 GWh	Sep 1989	Oct 2025	Non-biogenic Municipal Solid Waste : 54.8% Biogenic Municipal Solid Waste : 44.8%
ADA Carbon Solutions Red River	ADA Carbon Solutions (Red River), LLC	Coushatta, LA	99 GWh	Jan 2011	Oct 2025	Waste Heat
Panther Creek Wind Project	Greenbacker Renewable Energy Corporation	Pittsfield, IL	100 GWh	-	Oct 2025	Wind
Kimmel Road Solar, LLC	Birch Creek Power, LLC	Du Quoin, IL	102 GWh	Sep 2024	Oct 2025	Solar
Flat Fork Solar	Flat Fork Solar, LLC	Wheatley, AR	102 GWh	-	Oct 2025	Solar
Buffalo Ridge I LLC	Avangrid Power LLC	Elkton, SD	102 GWh	Mar 2009	Oct 2025	Wind
Carpenter	Entergy Arkansas LLC	Hot Springs, AR	102 GWh	Dec 1931	Dec 2024	Water
St Croix Falls	Northern States Power Co - Minnesota	St Croix Falls, WI	105 GWh	Dec 1909	Dec 2024	Water
Kaukauna Paper Mill	Thilmany LLC	Kaukauna, WI	105 GWh	Dec 1950	Oct 2025	Natural Gas : 53.6% Black Liquor : 46.4%
Big Turtle Wind Farm 2	DTE Electric Company	Harbor Beach, MI	107 GWh	Sep 2016	Dec 2024	Wind
Petenwell	Wisconsin River Power Company	Necedah, WI	108 GWh	Jul 1949	Dec 2024	Water
Gibson Solar	Gibson Solar, LLC	Princeton, IN	109 GWh	-	Oct 2025	Solar
Minden Wind Park	DTE Electric Company	Minden City, MI	109 GWh	Nov 2012	Oct 2025	Wind
Lawrence County Station	Hoosier Energy R E C, Inc	Mitchell, IN	109 GWh	Apr 2005	Dec 2024	Natural Gas
Gibson City Energy Center LLC	Gibson City Energy Center LLC	Gibson City, IL	109 GWh	May 2000	Dec 2024	Natural Gas
Sumrall II Solar Farm	Onward Energy	Sumrall, MS	110 GWh	Nov 2017	Oct 2025	Solar
Luverne Wind Energy Center	Otter Tail Power Co	Luverne, ND	110 GWh	Aug 2009	Dec 2024	Wind
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%
Cargill Corn Milling Division	Cargill Inc North America Sweetners	Eddyville, IA	110 GWh	Nov 1952	Dec 2024	Natural Gas
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%
Mosinee Mill	Ahlstrom-Munksjo NA Specialty Solutions, LLC	Mosinee, WI	111 GWh	Jun 1916	Oct 2025	Black Liquor : 51.8% Bituminous Coal : 19.6% Water : 14.7% Wood/Wood Waste Solids : 6.2% Natural Gas : 4.1% Residual Fuel Oil : 1.8% Sludge Waste : 1.8%
Pulliam	Wisconsin Public Service Corp	Green Bay, WI	111 GWh	Aug 1949	Oct 2025	Natural Gas
Packaging of America Tomahawk Mill	PCA-Tomahawk Mill	Tomahawk, WI	111 GWh	Dec 1919	Dec 2024	Wood/Wood Waste Solids : 35.7% Natural Gas : 34.2% Black Liquor : 18.1% Water : 11.7%
LA3 West Baton Rouge Solar Facility	Sol Systems	West Baton Rouge, LA	112 GWh	Aug 2020	Oct 2025	Solar
Murray	City of North Little Rock - (AR)	North Little Rock, AR	114 GWh	Sep 1988	Dec 2024	Water
Storm Lake II	ALLETE Clean Energy	Alta, IA	114 GWh	Mar 1999	Dec 2024	Wind
Iris Solar LLC	Iris Solar LLC	Franklinton, LA	114 GWh	Sep 2022	Oct 2025	Solar
Community Wind North LLC	Northern States Power Co - Minnesota	Verdi Township, MN	115 GWh	Apr 2011	Dec 2024	Wind
Lake Charles Plant	Rain CII Carbon LLC	Sulphur, LA	115 GWh	Nov 2012	Oct 2025	Waste Heat
Harvest	Harvest Windfarm, LLC	Elkton, MI	116 GWh	Dec 2007	Dec 2024	Wind
Sunlight Road Solar	Sunlight Road Solar, LLC	Franklinton, LA	116 GWh	Oct 2024	Oct 2025	Solar
Ashtabula Wind Energy Center	Otter Tail Power Co	Luverne, ND	116 GWh	Sep 2008	Dec 2024	Wind
Peno Creek	Union Electric Co - (MO)	Bowling Green, MO	118 GWh	Apr 2002	Dec 2024	Natural Gas : 97.4% Distillate Fuel Oil : 2.6%
Montpelier Electric Generating Station	Kimura Power LLC	Poneto, IN	119 GWh	May 2001	Oct 2025	Natural Gas

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#60	Alcoa Power Generating, Inc. - Yadkin Division	643.5 GWh	4
#27	Associated Electric Cooperative, Inc.	23.9 TWh	47
#13	Duke Energy Carolinas	111.6 TWh	565
#52	Duke Energy Progress West	4.3 TWh	10
#24	Louisville Gas and Electric Company and Kentucky Utilities Company	34.2 TWh	25
#1	PJM Interconnection, LLC	872.9 TWh	2,465
#6	Southern Company Services, Inc. - Trans	249.9 TWh	417
#5	Southwest Power Pool	300.6 TWh	835
#51	Southwestern Power Administration	5.0 TWh	34
#9	Tennessee Valley Authority	161.0 TWh	204

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#1	PJM Interconnection, LLC	872.9 TWh	2,465
#2	Midcontinent Independent System Operator, Inc.	656.9 TWh	2,831
#3	Electric Reliability Council of Texas, Inc.	484.7 TWh	1,313
#5	Southwest Power Pool	300.6 TWh	835
#6	Southern Company Services, Inc. - Trans	249.9 TWh	417
#7	California Independent System Operator	184.8 TWh	2,075
#9	Tennessee Valley Authority	161.0 TWh	204
#10	Florida Power & Light Co.	149.6 TWh	187
#12	New York Independent System Operator	132.6 TWh	1,211
#13	Duke Energy Carolinas	111.6 TWh	565