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
Wilmarth	Northern States Power Co - Minnesota	Mankato, MN	104 GWh	Aug 1948	Jul 2026	Non-biogenic Municipal Solid Waste : 53.9% Biogenic Municipal Solid Waste : 44.1% Natural Gas : 2.1%
Big Turtle Wind Farm 2	DTE Electric Company	Harbor Beach, MI	104 GWh	Sep 2016	Dec 2025	Wind
Beaver Dam Solar	Wisconsin Power & Light Co	Dodge, WI	103 GWh	Nov 2023	Jul 2026	Solar
Oak Glen Wind Farm	Minnesota Municipal Power Agny	Blooming Prairie, MN	102 GWh	Oct 2011	Dec 2025	Wind
Moraine II Wind LLC	Avangrid Power LLC	Woodstock, MN	101 GWh	Jan 2009	Dec 2025	Wind
Bear Creek (WI)	Wisconsin Power & Light Co	Lone Rock, WI	101 GWh	Aug 2022	Jul 2026	Solar
Cambridge CT Hybrid	Great River Energy	Cambridge, MN	101 GWh	Apr 1978	Dec 2025	Natural Gas : 91.7% Distillate Fuel Oil : 8.3%
Cassville Solar	Wisconsin Power & Light Co	Cassville, WI	100 GWh	Nov 2023	Jul 2026	Solar
Albany Solar (WI)	Wisconsin Power & Light Co	Broadhead, WI	100 GWh	Nov 2023	Jul 2026	Solar
Big Quinnesec 92	Wisconsin Electric Power Co	Iron Mountain, MI	100 GWh	Oct 1949	Dec 2025	Water
Fish Creek Solar Park	DTE Electric Company	Greenville, MI	100 GWh	-	Jul 2026	Solar
Mosaic Phosphates Uncle Sam	Mosaic Phosphates Co.	Uncle Sam, LA	99 GWh	Dec 1967	Jul 2026	Waste Heat : 91.7% Natural Gas : 8.3%
Assembly Solar Project	Assembly Solar I, LLC	Venice Township, MI	99 GWh	Nov 2020	Jul 2026	Solar
Flying Cloud Power Partners LLC	Avangrid Power LLC	Lake Park, IA	98 GWh	Nov 2003	Dec 2025	Wind
Pleasant Creek Unit 1	Interstate Power and Light Co	Palo, IA	98 GWh	Feb 2024	Jul 2026	Solar
Oak Point Cogen	Chevron Oronite Co LLC	Belle Chasse, LA	98 GWh	Sep 1999	Dec 2025	Natural Gas
Petenwell	Wisconsin River Power Company	Necedah, WI	97 GWh	Jul 1949	Dec 2025	Water
Twin Cities Hydro LLC	Twin Cities Hydro LLC	St. Paul, MN	97 GWh	Sep 1924	Dec 2025	Water
Buffalo Ridge I LLC	Avangrid Power LLC	Elkton, SD	97 GWh	Mar 2009	Jul 2026	Wind
Marshall Solar Energy Project	Marshall Solar Energy Project	Marshall, MN	97 GWh	Dec 2016	Jul 2026	Solar
Creston Solar (50 MW)	Interstate Power and Light Co	Creston, IA	96 GWh	Sep 2024	Jul 2026	Solar
Coffeen Solar BESS	Vistra Corp	Coffeen, IL	95 GWh	Nov 2024	Jul 2026	Solar
Lakefield Junction	Great River Energy	Trimont, MN	95 GWh	May 2001	Dec 2025	Natural Gas : 99.8%
Mosinee Mill	Ahlstrom-Munksjo NA Specialty Solutions, LLC	Mosinee, WI	95 GWh	Jun 1916	Jul 2026	Black Liquor : 41.5% Natural Gas : 27.8% Water : 14.2% Bituminous Coal : 10.5% Wood/Wood Waste Solids : 4.7% Sludge Waste : 1.1%
Troy Solar	Southern Indiana Gas & Elec Co	Troy, IN	94 GWh	Mar 2021	Jul 2026	Solar
PCA, Filer City Mill	PCA, Filer City Mill	Filer City, MI	94 GWh	Dec 1949	Jul 2026	Natural Gas
North Rock	Wisconsin Power & Light Co	Edgerton, WI	94 GWh	Sep 2022	Jul 2026	Solar
Cooks Mill PV I	Cooks Mill PV I, LLC	Matoon, IL	94 GWh	-	Jul 2026	Solar
Mondu Solar LLC	Mondu Solar LLC	Livonia, LA	93 GWh	-	Jul 2026	Solar
Crooked Creek PV I	Crooked Creek PV I, LLC	Salem, IL	92 GWh	-	Jul 2026	Solar
Heirloom Solar	Heirloom Solar (Ratts 1 Phase 2 Solar, LLC)	Petersburg, IN	92 GWh	Sep 2025	Jul 2026	Solar
Kaukauna Paper Mill	Thilmany LLC	Kaukauna, WI	92 GWh	Dec 1950	Jul 2026	Black Liquor : 50.3% Natural Gas : 49.7%
International Paper Red River Mill	Red River Mill Intl Paper Company	Campti, LA	92 GWh	Nov 2008	Mar 2025	Black Liquor : 60.6% Natural Gas : 20.1% Wood/Wood Waste Solids : 19.2%
Louise Solar	Geronimo Power	Taopi, MN	92 GWh	Nov 2024	Jul 2026	Solar
G McNeilus Wind Farm Dodge Center	Justin McNeilus	Dodge Center, MN	91 GWh	Aug 2002	Dec 2025	Wind
D G Hunter	City of Alexandria - (LA)	Alexandria, LA	91 GWh	Apr 1965	Dec 2025	Natural Gas
West Marinette	Wisconsin Public Service Corp	Peshtigo, WI	90 GWh	May 1971	Dec 2025	Natural Gas
Moraine Wind LLC	Avangrid Power LLC	Woodstock, MN	89 GWh	Nov 2003	Dec 2025	Wind
Ashtabula Wind Energy Center	Otter Tail Power Co	Luverne, ND	89 GWh	Sep 2008	Dec 2025	Wind
Pine Tree Acres WM LFGTE	WM Renewable Energy LLC	Lenox, MI	88 GWh	Feb 2012	Jul 2026	Landfill Gas
Diamond Willow Wind Facility	Montana-Dakota Utilities Co	Baker, MT	88 GWh	Nov 2007	Dec 2025	Wind
Redfield Solar	Redfield PV I, LLC	Sheridan, AR	88 GWh	-	Jul 2026	Solar
Community Wind South	Greenbacker Renewable Energy Corporation	Rushmore, MN	88 GWh	Nov 2012	Dec 2025	Wind
CF Industries Yazoo City Complex	CF Industries Nitrogen LLC	Yazoo City, MS	88 GWh	Jun 1984	Jul 2026	Natural Gas
Renegade Solar Energy LLC	Upper Michigan Energy Resources Company	Rock, MI	88 GWh	-	Jul 2026	Solar
Storm Lake 1	ALLETE Clean Energy	Alta, IA	87 GWh	Apr 1999	Dec 2025	Wind
Expander Turbine	Cleveland Cliffs	East Chicago, IN	86 GWh	Apr 1981	Jul 2026	Blast Furnace Gas
American Crystal Sugar Hillsboro	American Crystal Sugar Co	Hillsboro, ND	85 GWh	Aug 1990	Dec 2025	Subbituminous Coal
West Marinette 34	Madison Gas & Electric Co	Peshtigo, WI	85 GWh	May 2000	Dec 2025	Natural Gas
Rock Aetna Power Partners	Northern States Power Co - Minnesota	Woodstock, MN	84 GWh	Nov 2022	Dec 2025	Wind
Agrilectric Power Partners Ltd	Agrilectric Power Partners Ltd	Lake Charles, LA	84 GWh	Jun 1984	Dec 2025	Agricultural By-Products : 99.5%
Castle Rock	Wisconsin River Power Company	Adams, WI	83 GWh	Jul 1950	Dec 2025	Water
Branch Solar Project	Branch Solar, LLC	Coldwater, MI	83 GWh	-	Jul 2026	Solar
MMSD Jones Island Wastewater	Milwaukee Metro Sewerage Dist	Milwaukee, WI	83 GWh	Dec 1970	Jul 2026	Natural Gas : 87.1% Landfill Gas : 11.9% Distillate Fuel Oil : 1.0%
Metro Methane Recovery Facility	WM Renewable Energy LLC	Mitchellville, IA	83 GWh	Dec 1997	Jul 2026	Landfill Gas
Fillmore County Solar Project	Geronimo Power	Spring Valley, MN	82 GWh	Nov 2024	Jul 2026	Solar
Ewington Energy Systems, LLC	Ewington Energy Systems, LLC	Worthington, MN	81 GWh	Dec 2007	Dec 2025	Wind
John H Warden	L'Anse Warden Electric Company LLC	L'Anse, MI	81 GWh	Jul 1959	Oct 2025	Wood/Wood Waste Solids : 92.7% Tire-derived Fuels : 7.1%
M L Hibbard	ALLETE, Inc.	Duluth, MN	81 GWh	May 1949	Jul 2026	Wood/Wood Waste Solids : 91.5% Subbituminous Coal : 6.1% Natural Gas : 2.3%
Holcombe	Northern States Power Co - Minnesota	Holcombe, WI	81 GWh	Dec 1949	Dec 2025	Water
Western Michigan University Power Plant	Western Michigan University	Kalamazoo, MI	81 GWh	Jul 1997	Dec 2025	Natural Gas
St Croix Falls	Northern States Power Co - Minnesota	St Croix Falls, WI	80 GWh	Dec 1909	Dec 2025	Water
Richland Township Solar, LLC	Birch Creek Power, LLC	Washburn, IL	80 GWh	Dec 2024	Jul 2026	Solar
Grandfather Falls	Wisconsin Public Service Corp	Irma, WI	79 GWh	Nov 1938	Dec 2025	Water
Kent County Waste to Energy Facility	Kent County - (MI)	Grand Rapids, MI	78 GWh	Sep 1989	Jul 2026	Non-biogenic Municipal Solid Waste : 54.7% Biogenic Municipal Solid Waste : 44.7% Natural Gas : 0.6%
Earp Solar, LLC	Birch Creek Power, LLC	Monmouth, IL	78 GWh	Mar 2024	Jul 2026	Solar
Omega Hills Gas Recovery	WM Renewable Energy LLC	Germantown, WI	78 GWh	Nov 1985	Jul 2026	Landfill Gas
Gibson City Energy Center LLC	Gibson City Energy Center LLC	Gibson City, IL	77 GWh	May 2000	Dec 2025	Natural Gas
Hargis-Hebert Electric Generating	Lafayette Utilities System	Lafayette, LA	76 GWh	May 2006	Dec 2025	Natural Gas
Big Turtle Wind Farm, LLC	DTE Sustainable Generation	Harbor Beach, MI	76 GWh	Nov 2014	Dec 2025	Wind
Ridgewind	Ridgewind Power Partners LLC	Woodstock, MN	75 GWh	Dec 2010	Dec 2025	Wind
Degray	USCE -Vickburg District	Arkadelphia, AR	75 GWh	Jan 1972	Jul 2026	Water
St Paul Cogeneration	St Paul Cogeneration LLC	St. Paul, MN	75 GWh	Mar 2003	Dec 2025	Wood/Wood Waste Solids : 82.4% Natural Gas : 17.6%
Sherco Solar III	Northern States Power Co - Minnesota	Clear Lake, MN	74 GWh	-	Jul 2026	Solar
Vandalia Renewable Energy Center	Union Electric Co - (MO)	Vandalia, MO	74 GWh	Oct 2025	Jul 2026	Solar
Hoot Lake Solar	Otter Tail Power Co	Fergus Falls, MN	73 GWh	Jul 2023	Jul 2026	Solar
Dan E Karn	Consumers Energy Co - (MI)	Essexville, MI	73 GWh	Oct 1959	Jul 2026	Natural Gas : 92.1% Residual Fuel Oil : 7.9%
Archer Daniels Midland Peoria	BioUrja Renewables LLC	Peoria, IL	73 GWh	Dec 1987	Dec 2025	Natural Gas
Iowa State University	Iowa State University	Ames, IA	72 GWh	Sep 1960	Jul 2026	Natural Gas : 97.7% Distillate Fuel Oil : 2.3%
Ivanhoe Generation Facility	Orion Engineered Carbons	Franklin, LA	72 GWh	Mar 2023	Dec 2025	Waste Heat
Blanchard	ALLETE, Inc.	Royalton, MN	72 GWh	Jan 1925	Dec 2025	Water
Heritage Garden Wind Farm I LLC	DTE Sustainable Generation	Garden, MI	71 GWh	Aug 2012	Dec 2025	Wind
Big Blue	Big Blue Wind Farm LLC (MN)	Blue Earth, MN	71 GWh	Nov 2012	Dec 2025	Wind
Cornell	Northern States Power Co - Minnesota	Chippewa Falls, WI	70 GWh	Jun 1976	Dec 2025	Water
French Island	Northern States Power Co - Minnesota	La Cross, WI	68 GWh	Dec 1939	Jul 2026	Wood/Wood Waste Solids : 41.6% Non-biogenic Municipal Solid Waste : 25.4% Biogenic Municipal Solid Waste : 20.7% Distillate Fuel Oil : 12.0%
Altona Solar, LLC	Birch Creek Power, LLC	Centralia, MO	67 GWh	Jul 2024	Jul 2026	Solar
Pinckneyville	Union Electric Co - (MO)	Pinckneyville, IL	67 GWh	May 2000	Nov 2025	Natural Gas
Hardy	Consumers Energy Co - (MI)	Newaygo, MI	65 GWh	May 1931	Dec 2025	Water
Crossroads Energy Center	Clarksdale Public Utilities	Clarksdale, MS	65 GWh	Jun 2002	Dec 2025	Natural Gas
R M Heskett	Montana-Dakota Utilities Co	Mandan, ND	64 GWh	Oct 1954	Jul 2026	Natural Gas
Franklin Heating Station	Franklin Heating Station	Rochester, MN	63 GWh	Dec 1950	Jul 2026	Natural Gas : 81.5% Purchased Steam : 17.2% Distillate Fuel Oil : 1.3%
The Andersons Albion Ethanol LLC	The Andersons Albion Ethanol LLC	Albion, MI	62 GWh	Jul 2006	Dec 2025	Natural Gas
Pulliam	Wisconsin Public Service Corp	Green Bay, WI	62 GWh	Aug 1949	Jul 2026	Natural Gas
Winnebago Wind Power Project	Avangrid Power LLC	Forest City, IA	61 GWh	Aug 2008	Dec 2025	Wind
Little Quinnesec Falls Hydro Project	Eagle Creek Renewable Energy, LLC	Niagara, WI	61 GWh	Nov 1900	Dec 2025	Water
Sterlington Solar	Entergy Louisiana LLC	Sterlington, LA	60 GWh	-	Jul 2026	Solar
Prairie Creek Solar	Sol Systems	Jacksonville, IL	59 GWh	Oct 2023	Jul 2026	Solar
Blount Street	Madison Gas & Electric Co	Madison, WI	59 GWh	May 1957	Dec 2025	Natural Gas
Newton Solar BESS LLC	Vistra Corp	Newton, IL	58 GWh	-	Jul 2026	Solar
Kalkaska CT #1	Michigan Public Power Agency	Kalkaska, MI	58 GWh	Nov 2002	Dec 2025	Natural Gas

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