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	Nov 2025
Annual Generation	655.1 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 \| 35.7% Coal \| 29% Wind \| 14.9% Nuclear \| 13.9% Solar \| 4.5% 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
Wind Turbine	Madison Gas & Electric Co	Casco, WI	13 GWh	May 1999	Dec 2024	Wind
Indy Solar III, LLC	Onward Energy	Indianapolis, IN	13 GWh	Nov 2013	Sep 2025	Solar
James R Smith	City of Marquette - (MI)	Marquette, MI	13 GWh	Dec 1918	Dec 2024	Water
Owatonna Energy Station	Southern Minnesota Mun P Agny	Owatonna, MN	13 GWh	Feb 2018	Dec 2024	Natural Gas
Columbia Energy Center	City of Columbia - (MO)	Columbia, MO	13 GWh	May 2001	Dec 2024	Natural Gas
Hastings City Hydroelectric	Hastings Lock & Dam	Hastings, MN	13 GWh	Dec 1991	Dec 2024	Water
Hoist	Upper Peninsula Power Company	Negaunee, MI	13 GWh	Jan 1988	Dec 2024	Water
Zeeland Farm Services	Zeeland Farm Services	Zeeland, MI	13 GWh	Feb 2006	Dec 2023	Other Biomass Gas
Apple River	Northern States Power Co - Minnesota	Somerset, WI	13 GWh	Dec 1900	Dec 2024	Water
AES Belleville Solar LLC	AES Distributed Energy	Belleville, IL	13 GWh	Aug 2021	Nov 2024	Solar
Dodge Center Solar	Enel Green Power NA, Inc.	Dodge Center, MN	13 GWh	Nov 2016	Dec 2024	Solar
Stevens Point Mill	Pixelle Specialty Solution, LLC	Stevens Point, WI	13 GWh	Jan 2002	Dec 2024	Natural Gas
Indianapolis Motor Speedway Solar PV	Boralex US Operations LLC	Indianapolis, IN	13 GWh	May 2014	Dec 2024	Solar
Agriwind	Agriwind Holdings, LLC	Tiskilwa, IL	13 GWh	Jun 2007	Dec 2024	Wind
Hodag Solar	Wisconsin Public Service Corp	Rhinelander, WI	13 GWh	Dec 2021	Dec 2024	Solar
Crawfordsville 2 Solar Park	Indiana Municipal Power Agency	Crawfordsville, IN	12 GWh	Nov 2019	Dec 2024	Solar
Scottsburg Solar Park	Indiana Municipal Power Agency	Scottsburg, IN	12 GWh	Sep 2020	Dec 2024	Solar
Allegan Dam	Consumers Energy Co - (MI)	Allegan, MI	12 GWh	Dec 1934	Dec 2024	Water
POET Biorefining-Hanlontown, LLC	POET Biorefining-Hanlontown, LLC	Hanlontown, IA	12 GWh	Dec 2018	Dec 2024	Natural Gas
Annandale Solar	Enel Green Power NA, Inc.	Annandale, MN	12 GWh	Nov 2016	Dec 2024	Solar
Lake Pulaski Solar	Enel Green Power NA, Inc.	Buffalo, MN	12 GWh	Nov 2016	Dec 2024	Solar
Neptune Gas Processing Plant	Enterprise Products Optg LP	Centerville, LA	12 GWh	Jan 2004	Dec 2024	Other Fuel
Shaokatan Hills LLC	Shaokatan Hills, LLC (Longroad)	Hendricks, MN	12 GWh	Jul 1999	Dec 2024	Wind
Spartan PV 1, LLC	NJR Clean Energy Ventures Corporation	East Lansing, MI	12 GWh	Nov 2017	Dec 2024	Solar
Menominee Mill Marinette	Eagle Creek Renewable Energy, LLC	Menominee, MI	12 GWh	Dec 1923	Sep 2025	Water
Chisago Solar	Enel Green Power NA, Inc.	North Branch, MN	12 GWh	Nov 2016	Dec 2024	Solar
Franklin County Solar	MidAmerican Energy Co	Hampton, IA	12 GWh	Dec 2021	Dec 2024	Solar
Maywood Photovoltaic Project	ENI New Energy US Inc	Indianapolis, IN	11 GWh	Feb 2014	Dec 2024	Solar
Webber	Consumers Energy Co - (MI)	Lyons, MI	11 GWh	Dec 1906	Dec 2024	Water
Windshare LLC	Greenbacker Renewable Energy Corporation	Chandler, MN	11 GWh	Feb 2006	Dec 2024	Wind
Ladysmith Dam	Northern States Power Co - Minnesota	Ladysmith, WI	11 GWh	Dec 1939	Dec 2024	Water
Tatanka Wi	HQC Tatanka Wi Solar Power Generation LLC	Buffalo, MN	11 GWh	Nov 2017	Dec 2024	Solar
Optimum Wind 7 LLC	Optimum Wind 7 LLC	Nevada, IA	11 GWh	Feb 2017	Dec 2024	Wind
Electrifarm	MidAmerican Energy Co	Waterloo, IA	11 GWh	Apr 1975	Dec 2024	Natural Gas
Island Street Peaking Plant	WPPI Energy	Kaukauna, WI	11 GWh	May 2004	Dec 2024	Natural Gas
Brainerd Public Utilities	Brainerd Public Utilities	Brainerd, MN	11 GWh	Dec 1916	Dec 2023	Water
Tyto Solar	Madison Gas & Electric Co	Fitchburg, WI	11 GWh	Jan 2024	Dec 2024	Solar
Tomahawk	Wisconsin Public Service Corp	Tomahawk, WI	11 GWh	Dec 1937	Dec 2024	Water
Cashton Greens Wind Farm	Cashton Greens Wind Farm LLC	Cashton, WI	11 GWh	Apr 2012	Dec 2024	Wind
Eastwood Solar	Enel Green Power NA, Inc.	Mankato, MN	11 GWh	Nov 2016	Dec 2024	Solar
Venice Resources Gas Recovery	WM Renewable Energy LLC	Lennon, MI	11 GWh	Feb 1992	Dec 2024	Landfill Gas
Linton	Indiana Municipal Power Agency	Linton, IN	11 GWh	Jun 2022	Dec 2024	Solar
Sylvan	ALLETE, Inc.	Pillager, MN	11 GWh	Dec 1912	Dec 2024	Water
Rochester Hydro	Rochester Public Utilities	Mazeppa, MN	10 GWh	Aug 1984	Dec 2024	Water
Optimum Wind 4 LLC	Optimum Wind 4 LLC	Nevada, IA	10 GWh	Feb 2017	Dec 2024	Wind
Athens MN CONX	SoCore Energy LLC	Athens, MN	10 GWh	Nov 2018	Dec 2024	Solar
Michelangelo Wind 4 LLC	Michelangelo Wind 4 LLC	Ames, IA	10 GWh	Nov 2016	Dec 2024	Wind
Optimum Wind 3 LLC	Optimum Wind 3 LLC	Nevada, IA	10 GWh	Feb 2017	Dec 2024	Wind
Winton	ALLETE, Inc.	Winton, MN	10 GWh	Jul 1923	Dec 2024	Water
Venus Wind 3 LLC	Venus Wind 3 LLC	Grinnell, IA	10 GWh	Feb 2017	Dec 2024	Wind
Johnson Falls	Wisconsin Public Service Corp	Town of Stephenson, WI	10 GWh	Jun 1923	Dec 2024	Water
Lincoln Heights I	ALLETE Clean Energy	Lake Benton, MN	10 GWh	Apr 2006	Dec 2024	Wind
Leonardo Wind 1 LLC	Leonardo Wind 1 LLC	Alden, IA	10 GWh	Nov 2016	Dec 2024	Wind
Brainerd Airport	AEP Onsite Partners, LLC	Brainerd, MN	10 GWh	Nov 2022	Dec 2024	Solar
Pine	Wisconsin Electric Power Co	Florence, WI	10 GWh	May 1922	Dec 2024	Water
Byrne Solar, LLC	Byrne Solar, LLC	Lowell, MI	10 GWh	Sep 2023	Dec 2024	Solar
West Faribault Solar	Enel Green Power NA, Inc.	Faribault, MN	10 GWh	Nov 2016	Dec 2024	Solar
Knife Falls	ALLETE, Inc.	Cloquet, MN	10 GWh	Dec 1921	Dec 2024	Water
IND Solar Farm (Phase IIA)	Terraform Arcadia	Indianapolis, IN	10 GWh	Nov 2014	Dec 2024	Solar
Pickford Solar	Heritage Sustainable Energy. LLC	Pickford, MI	10 GWh	Jan 2021	Dec 2024	Solar
Redwood Falls Wind	Southern Minnesota Mun P Agny	Redwood Falls, MN	10 GWh	Nov 2004	Dec 2024	Wind
LSU Cogen	LSU and A&M College	Baton Rouge, LA	10 GWh	Nov 2004	Sep 2025	Natural Gas
Montevideo Solar LLC, CSG	Montevideo Solar LLC	Montevideo, MN	10 GWh	Dec 2018	Dec 2024	Solar
Sycamore (IA)	MidAmerican Energy Co	Johnston, IA	10 GWh	Jul 1974	Dec 2024	Natural Gas
DodgeSun CSG	National Grid Renewables	Kasson, MN	9 GWh	Nov 2017	Dec 2024	Solar
REG Juhl Glenville Wind, LLC	REG Juhl Glenville Wind, LLC	Albert Lea, MN	9 GWh	Nov 2020	Dec 2024	Wind
Northfield Solar CSG	Altus Power America Management, LLC	Northfield, MN	9 GWh	Jun 2020	Dec 2024	Solar
Equuleus Community Solar Gardens	MN8 Energy LLC	Rosemount, MN	9 GWh	Jul 2017	Dec 2024	Solar
WasecaSun	National Grid Renewables	Waseca, MN	9 GWh	Jan 2018	Dec 2024	Solar
Park Mill	Eagle Creek Renewable Energy, LLC	Marinette, WI	9 GWh	Dec 1919	Dec 2024	Water
Hancock	DTE Electric Company	Commerce Twp, MI	9 GWh	Mar 1966	Dec 2024	Natural Gas
Tipton Solar Park	Indiana Municipal Power Agency	Tipton, IN	9 GWh	Jun 2019	Dec 2024	Solar
Cisco	ALLETE Clean Energy	Brewster, MN	9 GWh	Jan 2008	Dec 2024	Wind
Rengstorf Solar CSG	National Grid Renewables	Coutland, MN	9 GWh	Oct 2017	Dec 2024	Solar
Ameresco Janesville	AMERESCO Janesville LLC	Janesville, WI	9 GWh	Sep 2004	Dec 2024	Landfill Gas
Lemond Solar	Adapture Renewables, Inc.	Owatonna, MN	9 GWh	May 2017	Dec 2024	Solar
Walcott Solar CSG	Altus Power America Management, LLC	Faribault, MN	9 GWh	Jun 2020	Dec 2024	Solar
Pastime Farm, LLC	Cypress Creek Renewables	Brazil, IN	9 GWh	Nov 2015	Dec 2024	Solar
Optimum Wind 5 LLC	Optimum Wind 5 LLC	Nevada, IA	9 GWh	Feb 2017	Dec 2024	Wind
Worthington	City of Worthington - (MN)	Worthington, MN	9 GWh	Jan 2002	Dec 2024	Wind : 98.9% Distillate Fuel Oil : 1.1%
Four Mile Hydropower Project	Eagle Creek Renewable Energy, LLC	Alpena, MI	9 GWh	Aug 1990	Dec 2024	Water
Big Lake Project CSG	DG Minnesota CSG, LLC	Big Lake, MN	9 GWh	May 2018	Dec 2024	Solar
Upper Sterling	City of Rock Falls - (IL)	Rock Falls, IL	9 GWh	May 1988	Dec 2024	Water
SIUC	Southern Illinois University Carbondale	Carbondale, IL	9 GWh	May 1998	Sep 2025	Bituminous Coal
Sartell Holdco CSG	Sartell Holdco LLC	Sartell, MN	9 GWh	Apr 2019	Dec 2024	Solar
Richmond CSG	SoCore Energy LLC	Richmond, MN	9 GWh	Nov 2017	Dec 2024	Solar
Helen Solar CSG	Altus Power America Management, LLC	Plato, MN	9 GWh	Jun 2020	Dec 2024	Solar
Johnson Solar CSG	National Grid Renewables	Edgerton, MN	9 GWh	Dec 2017	Dec 2024	Solar
Winnebago County Landfill Gas	Winnebago County	Oshkosh, WI	9 GWh	Jan 2000	Dec 2024	Landfill Gas
Montgomery County Community Solar Center	Union Electric Co - (MO)	New Florence, MO	9 GWh	Feb 2022	Dec 2024	Solar
Novel OYA of Osakis CSG	NRG MN Community LLC	Osakis, MN	9 GWh	Jun 2018	Dec 2024	Solar
Nesvold Watertown Solar	SoCore Energy LLC	Watertown, MN	9 GWh	Dec 2017	Dec 2024	Solar
Sandstone Rapids	Wisconsin Public Service Corp	Town of Stephenson, WI	9 GWh	Dec 1924	Dec 2024	Water
Autumn Hills Generating Facility	North American Natural Res	Zeeland, MI	9 GWh	Jun 2009	May 2024	Landfill Gas
Sherburne North Project CSG	MN Solar Community, LLC	St. Cloud, MN	9 GWh	Jun 2018	Dec 2024	Solar
MontSun Community Solar	Generate Capital	Montrose, MN	9 GWh	Nov 2017	Dec 2024	Solar
Optimum Wind 6 LLC	Optimum Wind 6 LLC	Nevada, IA	9 GWh	Feb 2017	Dec 2024	Wind
Lake Emily Solar	Enel Green Power NA, Inc.	St. Peter, MN	9 GWh	Nov 2016	Dec 2024	Solar
Frontenac Holdco LLC, CSG	Frontenac Holdco LLC	Frontenac, MN	9 GWh	Feb 2019	Dec 2024	Solar
Scandia CSG	DG Minnesota CSG, LLC	Scandia, MN	9 GWh	Dec 2017	Dec 2024	Solar

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#61	Alcoa Power Generating, Inc. - Yadkin Division	696.7 GWh	4
#27	Associated Electric Cooperative, Inc.	23.6 TWh	47
#13	Duke Energy Carolinas	112.5 TWh	565
#52	Duke Energy Progress West	4.3 TWh	10
#24	Louisville Gas and Electric Company and Kentucky Utilities Company	34.4 TWh	25
#1	PJM Interconnection, LLC	870.7 TWh	2,465
#6	Southern Company Services, Inc. - Trans	250.9 TWh	417
#5	Southwest Power Pool	299.9 TWh	835
#49	Southwestern Power Administration	5.2 TWh	34
#9	Tennessee Valley Authority	161.6 TWh	204

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#1	PJM Interconnection, LLC	870.7 TWh	2,465
#2	Midcontinent Independent System Operator, Inc.	655.1 TWh	2,831
#4	Electric Reliability Council of Texas, Inc.	485.0 TWh	1,313
#5	Southwest Power Pool	299.9 TWh	835
#6	Southern Company Services, Inc. - Trans	250.9 TWh	417
#7	California Independent System Operator	188.0 TWh	2,075
#9	Tennessee Valley Authority	161.6 TWh	204
#10	Florida Power & Light Co.	148.9 TWh	187
#12	New York Independent System Operator	131.6 TWh	1,211
#13	Duke Energy Carolinas	112.5 TWh	565