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%

Map of Midcontinent Independent System Operator, Inc.

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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
Big Falls	Northern States Power Co - Minnesota	Glen Fora, WI	36 GWh	Dec 1921	Dec 2024	Water
Blue Elk III Solar, LLC	Blue Elk III Solar, LLC	Eaton Rapids, MI	36 GWh	Nov 2023	Dec 2024	Solar
Cement City Solar, LLC	AES Distributed Energy	Cement City, MI	37 GWh	Dec 2022	Dec 2024	Solar
Midcontinent Solar, LLC	Midcontinent Solar, LLC	Owosso, MI	37 GWh	Sep 2023	Dec 2024	Solar
Coopersville	Energy Developments, Inc d/b/a EDL	Coopersville, MI	37 GWh	May 1994	Dec 2024	Landfill Gas
Peavy Falls	Wisconsin Electric Power Co	Crystal Falls, MI	37 GWh	Dec 1942	Dec 2024	Water
Metro Gas Recovery	WM Renewable Energy LLC	Franklin, WI	37 GWh	Nov 1985	Dec 2024	Landfill Gas
Deertrack Park Gas Recovery	WM Renewable Energy LLC	Watertown, WI	37 GWh	Jan 2006	Dec 2024	Landfill Gas
DePue Holdings, LLC	DePue Holdings, LLC	DePue, IL	37 GWh	Jan 2023	Dec 2024	Solar
Westside Energy Station	Rochester Public Utilities	Rochester, MN	37 GWh	Feb 2018	Dec 2024	Natural Gas
Greenstone Solar, LLC	Greenstone Solar, LLC	Coldwater, MI	37 GWh	Sep 2023	Dec 2024	Solar
East. Michigan Univ. Heating Plant	East. Michigan Univ. Heating Plant	Ypsilanti, MI	37 GWh	Sep 1987	Dec 2024	Natural Gas
Glen Ullin Station 6	Montana-Dakota Utilities Co	Glen Ullin, ND	38 GWh	Jun 2009	Dec 2024	Waste Heat
Blue Elk IV Solar, LLC	Blue Elk IV Solar, LLC	Adrian, MI	38 GWh	Nov 2023	Dec 2024	Solar
Pullman Solar, LLC	AES Distributed Energy	Lee Township, MI	38 GWh	Nov 2022	Dec 2024	Solar
O'Brien Solar Fields	Madison Gas & Electric Co	Fitchburg, WI	38 GWh	Apr 2021	Dec 2024	Solar
Alsey	Prairie Power, Inc	Alsey, IL	39 GWh	May 1999	Dec 2024	Natural Gas
Macbeth Solar	Macbeth Solar, LLC	Montague, MI	39 GWh	Apr 2022	Dec 2024	Solar
Port Edwards Mill	Domtar Industries Inc	Port Edwards, WI	40 GWh	Dec 1912	Oct 2025	Water
Hodenpyl	Consumers Energy Co - (MI)	Mesick, MI	40 GWh	Jun 1925	Dec 2024	Water
Zimmerman Energy	Landfill Energy Systems	Argos, IN	40 GWh	Oct 2014	Oct 2025	Landfill Gas
Temperance Solar, LLC	National Grid Renewables	Erie, MI	40 GWh	Nov 2020	Dec 2024	Solar
Rapids Energy Center	ALLETE, Inc.	Grand Rapids, MN	40 GWh	Dec 1942	Dec 2024	Natural Gas : 77.3% Water : 22.7%
Lyons Road	Lyons Road Solar, LLC	Owosso, MI	40 GWh	Dec 2021	Dec 2024	Solar
Bingham Solar, LLC	National Grid Renewables	St. Johns, MI	41 GWh	Nov 2020	Dec 2024	Solar
Mosaic Phosphates Uncle Sam	Mosaic Phosphates Co.	Uncle Sam, LA	41 GWh	Dec 1967	Oct 2025	Waste Heat
Anheuser-Busch St Louis	Anheuser-Busch Inc	St. Louis, MO	42 GWh	Dec 1938	Oct 2025	Natural Gas : 93.3% Other Biomass Gas : 6.7%
Louisiana Tech University Power Plant	Louisiana Tech University	Ruston, LA	42 GWh	Jun 2004	Dec 2024	Natural Gas
American Crystal Sugar Drayton	American Crystal Sugar Co	Drayton, ND	42 GWh	Aug 1965	Dec 2024	Subbituminous Coal
Dells	Northern States Power Co - Minnesota	Eau Claire, WI	42 GWh	Dec 1922	Dec 2024	Water
OREG 3 Inc	Ormat Nevada Inc	Trimont, MN	42 GWh	Jul 2010	Oct 2025	Waste Heat
Decorative Panels Intl	Decorative Panels International, Inc.	Alpena, MI	43 GWh	Oct 1957	Dec 2023	Natural Gas : 79.6% Wood/Wood Waste Solids : 20.4%
Du Bay	Consolidated Water Power Co	Eau Pleine, WI	43 GWh	Dec 1941	Dec 2024	Water
American Crystal Sugar Crookston	American Crystal Sugar Co	Crookston, MN	43 GWh	Aug 1954	Dec 2024	Subbituminous Coal
McClellan (AR)	Arkansas Electric Coop Corp	Camden, AR	43 GWh	Apr 1972	Dec 2024	Natural Gas : 92.3% Distillate Fuel Oil : 7.7%
American Crystal Sugar East Grand Forks	American Crystal Sugar Co	East Grand Forks, MN	43 GWh	Aug 1990	Dec 2024	Subbituminous Coal
Combined Locks	City of Kaukauna	Combined Locks, WI	43 GWh	Jan 1988	Dec 2024	Water
Port Allen (LA)	Placid Refining Co LLC	Port Allen, LA	43 GWh	Apr 1990	Dec 2024	Natural Gas
West Marinette 34	Madison Gas & Electric Co	Peshtigo, WI	44 GWh	May 2000	Dec 2024	Natural Gas
Top of Iowa Windfarm III	Madison Gas & Electric Co	Kensett, IA	44 GWh	Jan 2008	Dec 2024	Wind
Otter Creek Ethanol Poet - Ashton	Otter Creek Ethanol LLC - Poet Ashton	Ashton, IA	44 GWh	Feb 2004	Oct 2025	Natural Gas
Arbor Hill Solar	MidAmerican Energy Co	Greenfield, IA	45 GWh	Dec 2021	Oct 2025	Solar
St. James Solar (LA)	St. James Solar, LLC	Vacherie, LA	45 GWh	Jan 2023	Dec 2024	Solar
Polaris Solar Park	DTE Electric Company	Ashley, MI	46 GWh	-	Oct 2025	Solar
Adams Wind Generations LLC	BEAM US, LLC	Cosmos, MN	46 GWh	Feb 2011	Dec 2024	Wind
Danielson Wind Farms LLC	BEAM US, LLC	Cosmos, MN	47 GWh	Feb 2011	Dec 2024	Wind
Olmsted Waste Energy	Olmsted County Public Works	Rochester, MN	47 GWh	Mar 1987	Dec 2024	Non-biogenic Municipal Solid Waste : 54.7% Biogenic Municipal Solid Waste : 44.7% Natural Gas : 0.5%
New Badger	City of Kaukauna	Kaukauna, WI	47 GWh	Dec 2013	Oct 2025	Water
Hennepin Island	Northern States Power Co - Minnesota	Minneapolis, MN	47 GWh	Sep 1954	Dec 2024	Water
Taconite Ridge 1 Wind Energy Center	ALLETE, Inc.	Mountain Iron, MN	47 GWh	Apr 2008	Dec 2024	Wind
Kalkaska CT #1	Michigan Public Power Agency	Kalkaska, MI	48 GWh	Nov 2002	Dec 2024	Natural Gas
Pheasant Run Landfill Gas Recovery	WM Renewable Energy LLC	Bristol, WI	48 GWh	Jan 1992	Dec 2024	Landfill Gas
Blount Street	Madison Gas & Electric Co	Madison, WI	49 GWh	May 1957	Dec 2024	Natural Gas
International Falls Power	Boise White Paper LLC	International Falls, MN	49 GWh	Dec 1923	Oct 2025	Water
Sherco Solar II	Northern States Power Co - Minnesota	Becker, MN	49 GWh	-	Oct 2025	Solar
Wisconsin Rapids	Consolidated Water Power Co	Wisconsin Rapids, WI	50 GWh	Dec 1902	Dec 2024	Water
St. Cloud Hydro	St. Cloud Hydroelectric Generation Facility	St Cloud, MN	51 GWh	May 1988	Dec 2024	Water
Interstate	City of Springfield - (IL)	Springfield, IL	51 GWh	Aug 1997	Dec 2024	Natural Gas : 99.9%
Brent Run Generating Station	Energy Developments, Inc d/b/a EDL	Montrose, MI	51 GWh	Dec 1997	Dec 2024	Landfill Gas
Koda Biomass Plant	Koda Energy LLC	Shakopee, MN	51 GWh	Apr 2009	Dec 2024	Agricultural By-Products : 69.2% Wood/Wood Waste Solids : 22.8% Natural Gas : 8.1%
McKinley Wind Park	DTE Electric Company	Pigeon, MI	51 GWh	Nov 2012	Oct 2025	Wind
Grand Blanc Generating Station	Energy Developments, Inc d/b/a EDL	Grand Blanc, MI	52 GWh	Jun 1994	Dec 2024	Landfill Gas
Benndale	Cooperative Energy	Benndale, MS	52 GWh	Sep 1969	Dec 2024	Natural Gas
South Fork Wind Farm	South Fork Wind, LLC	Round Lake, MN	52 GWh	Nov 2016	Dec 2024	Wind
Hargis-Hebert Electric Generating	Lafayette Utilities System	Lafayette, LA	53 GWh	May 2006	Dec 2024	Natural Gas
Ivanhoe Generation Facility	Orion Engineered Carbons	Franklin, LA	53 GWh	Mar 2023	Dec 2024	Waste Heat
Montfort Wind Energy Center	Wisconsin Electric Power Co	Montfort, WI	54 GWh	May 2002	Oct 2025	Wind
Carroll Area Wind Farm	SRIV Partnership LLC	Templeton, IA	54 GWh	Dec 2014	Dec 2024	Wind
C W Tippy	Consumers Energy Co - (MI)	Wellston, MI	54 GWh	Dec 1917	Dec 2024	Water
Fond Du Lac	ALLETE, Inc.	Duluth, MN	54 GWh	Dec 1923	Dec 2024	Water
Grant County Wind LLC	Grant County Wind, LLC	Woodstock, MN	55 GWh	Jul 2010	Dec 2024	Wind
Cedar Hills Wind Farm	Montana-Dakota Utilities Co	Rhame, ND	56 GWh	May 2010	Dec 2024	Wind
R M Heskett	Montana-Dakota Utilities Co	Mandan, ND	57 GWh	Oct 1954	Oct 2025	Natural Gas
Little Quinnesec Falls Hydro Project	Eagle Creek Renewable Energy, LLC	Niagara, WI	57 GWh	Nov 1900	Dec 2024	Water
Saint Marys Hospital Power Plant	St Mary's Hospital	Rochester, MN	57 GWh	Dec 1970	Oct 2025	Natural Gas : 99.4% Distillate Fuel Oil : 0.6%
Kilbourn	Wisconsin Power & Light Co	Wisconsin Dells, WI	58 GWh	Jun 1926	Dec 2024	Water
Prairie Creek Solar	Sol Systems	Jacksonville, IL	58 GWh	Oct 2023	Oct 2025	Solar
Winnebago Wind Power Project	Avangrid Power LLC	Forest City, IA	59 GWh	Aug 2008	Dec 2024	Wind
PPG Riverside	Westlake 2 US LLC	Lake Charles, LA	59 GWh	Aug 1947	Jul 2025	Purchased Steam
Shirley Wind	Duke Energy Renewables Services	Denmark, WI	60 GWh	Oct 2010	Dec 2024	Wind
French Island	Northern States Power Co - Minnesota	La Cross, WI	60 GWh	Dec 1939	Oct 2025	Wood/Wood Waste Solids : 47.8% Non-biogenic Municipal Solid Waste : 28.2% Biogenic Municipal Solid Waste : 23.1%
Pine Tree Acres	NextEra Renewable Fuels, LLC	Lenox Twp, MI	61 GWh	May 1998	Oct 2025	Landfill Gas
Moraine Wind LLC	Avangrid Power LLC	Woodstock, MN	61 GWh	Nov 2003	Dec 2024	Wind
Flambeau Hydroelectric Station	Dairyland Power Coop	Ladysmith, WI	62 GWh	Dec 1950	Dec 2024	Water
Chippewa Falls	Northern States Power Co - Minnesota	Chippewa Falls, WI	63 GWh	Dec 1927	Dec 2024	Water
Sumpter Energy Associates	NextEra Renewable Fuels, LLC	Belleville, MI	63 GWh	Jun 1992	Dec 2024	Landfill Gas
The Andersons Albion Ethanol LLC	The Andersons Albion Ethanol LLC	Albion, MI	63 GWh	Jul 2006	Dec 2024	Natural Gas
Lakefield Junction	Great River Energy	Trimont, MN	64 GWh	May 2001	Dec 2024	Natural Gas
Inver Hills	Northern States Power Co - Minnesota	Inver Grove Heights, MN	64 GWh	Mar 1972	Dec 2024	Natural Gas : 99.7%
Altona Solar, LLC	Birch Creek Power, LLC	Centralia, MO	64 GWh	Jul 2024	Oct 2025	Solar
Franklin Heating Station	Franklin Heating Station	Rochester, MN	67 GWh	Dec 1950	Oct 2025	Natural Gas : 79.5% Purchased Steam : 18.9% Distillate Fuel Oil : 1.6%
Pine River Solar Park	DTE Electric Company	Alma, MI	67 GWh	-	Oct 2025	Solar
Richland Township Solar, LLC	Birch Creek Power, LLC	Washburn, IL	68 GWh	-	Oct 2025	Solar
D G Hunter	City of Alexandria - (LA)	Alexandria, LA	69 GWh	Apr 1965	Dec 2024	Natural Gas
Tilton	Tilton Energy LLC	Tilton, IL	69 GWh	May 1999	Dec 2024	Natural Gas
Big Turtle Wind Farm, LLC	DTE Sustainable Generation	Harbor Beach, MI	70 GWh	Nov 2014	Dec 2024	Wind
Big Blue	Big Blue Wind Farm LLC (MN)	Blue Earth, MN	70 GWh	Nov 2012	Dec 2024	Wind
Summit Lake	Central Iowa Power Cooperative	Creston, IA	70 GWh	Feb 1951	Dec 2024	Natural Gas : 99.9%
Western Michigan University Power Plant	Western Michigan University	Kalamazoo, MI	70 GWh	Jul 1997	Dec 2024	Natural Gas
Hardy	Consumers Energy Co - (MI)	Newaygo, MI	72 GWh	May 1931	Dec 2024	Water

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