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	Mar 2026
Annual Generation	659.4 TWh
Power Plants	2,831
Utilities	1,296
Ranked #2 out of 65 in terms of net annual generation
Ranked #2 out of 54 in terms of annual generation from natural gas
Power Plant Types	Natural Gas \| 36.2% Coal \| 28.4% Wind \| 14.7% Nuclear \| 13.9% Solar \| 4.8% Water \| 1.5% 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
McGregor	City of McGregor- (IA)	McGregor, IA	7 MWh	Nov 1941	Dec 2024	Distillate Fuel Oil
McDonough Solar 1, LLC CSG	McDonough Solar 1, LLC	Blandinsville, IL	4 GWh	Nov 2020	Dec 2024	Solar
McDonald Solar Farm, LLC	Cypress Creek Renewables	West Terre Haute, IN	8 GWh	Nov 2015	Dec 2024	Solar
McClure Dam	Upper Peninsula Power Company	Marquette, MI	32 GWh	Jan 1988	Dec 2024	Water
McClellan (AR)	Arkansas Electric Coop Corp	Camden, AR	43 GWh	Apr 1972	Dec 2024	Natural Gas : 92.3% Distillate Fuel Oil : 7.7%
Maywood Photovoltaic Project	ENI New Energy US Inc	Indianapolis, IN	11 GWh	Feb 2014	Dec 2024	Solar
May Shannon Solar, LLC	May Shannon Solar, LLC	Clio, MI	4 GWh	Nov 2020	Dec 2024	Solar
Maston Garden Solar	Maston Garden LLC	Kasson, MN	2 GWh	Apr 2020	Dec 2024	Solar
Marshfield Utilities Gas Plant	City of Marshfield - (WI)	Marshfield, WI	4 GWh	May 2011	Dec 2024	Natural Gas
Marshalltown Generating Station	Interstate Power and Light Co	Marshalltown, IA	3 TWh	Mar 2017	Dec 2025	Natural Gas : 99.9%
Marshalltown	Interstate Power and Light Co	Marshalltown, IA	79 GWh	May 1978	Dec 2024	Natural Gas
Marshall Wind 6 LLC	Marshall Wind Farm, LLC	Marshall, MN	3 GWh	Nov 2007	Dec 2024	Wind
Marshall Wind 5 LLC	Marshall Wind Farm, LLC	Marshall, MN	2 GWh	Nov 2007	Dec 2024	Wind
Marshall Wind 4 LLC	Marshall Wind Farm, LLC	Marshall, MN	6 GWh	Nov 2007	Dec 2024	Wind
Marshall Wind 3 LLC	Marshall Wind Farm, LLC	Marshall, MN	6 GWh	Nov 2007	Dec 2024	Wind
Marshall Wind 2 LLC	Marshall Wind Farm, LLC	Marshall, MN	6 GWh	Nov 2007	Dec 2024	Wind
Marshall Wind 1 LLC	Marshall Wind Farm, LLC	Marshall, MN	3 GWh	Nov 2007	Dec 2024	Wind
Marshall Solar Plus LLC	Western Minnesota Mun Pwr Agny	Marshall, MN	539 MWh	Nov 2024	Dec 2024	Solar
Marshall Solar Energy Project	Marshall Solar Energy Project	Marshall, MN	97 GWh	Dec 2016	Dec 2025	Solar
Marshall (MN)	City of Marshall - (MN)	Marshall, MN	60 MWh	Jun 1969	Dec 2024	Distillate Fuel Oil
Marshall (MI)	City of Marshall - (MI)	Marshall, MI	704 MWh	May 1928	Dec 2024	Water
Marshall (IL)	City of Marshall - (IL)	Marshall, IL	116 MWh	Mar 2002	Dec 2024	Distillate Fuel Oil
Marquette Energy Center	City of Marquette - (MI)	Marquette, MI	162 GWh	Jul 2017	Dec 2024	Natural Gas : 99.2% Distillate Fuel Oil : 0.8%
Marmas Solar CSG	National Grid Renewables	St. Cloud, MN	6 GWh	Mar 2018	Dec 2024	Solar
Marlow Solar, LLC CSG	Marlow Solar, LLC	Bluford, IL	4 GWh	Nov 2020	Dec 2024	Solar
Markland	Duke Energy Indiana, LLC	Florence, IN	299 GWh	Dec 1966	Dec 2024	Water
Marion Solar LNG	Marion Solar LLC	Indianapolis, IN	2 GWh	Sep 2015	Dec 2024	Solar
Marion Solar 4b LLC	Pivot Energy	Sandoval, IL	970 MWh	Apr 2024	Dec 2024	Solar
Marion Garden	Excelsior Energy Capital	Faribault, MN	2 GWh	Oct 2020	Dec 2024	Solar
Marion	Southern Illinois Power Coop	Marion, IL	767 GWh	May 1963	Dec 2025	Bituminous Coal : 87.8% Natural Gas : 12.1%
Marigold Community Solar Garden, LLC	National Grid Renewables	Waterville, MN	2 GWh	Dec 2020	Dec 2024	Solar
Marceline	City of Marceline - (MO)	Marceline, MO	4 MWh	Jul 1989	Dec 2024	Distillate Fuel Oil
Mapleton Community Solar	Mapleton Community Solar	Mapleton, MN	5 GWh	May 2017	Dec 2024	Solar
Maple Lake	Great River Energy	Maple Lake, MN	176 MWh	Apr 1978	Dec 2024	Distillate Fuel Oil
Maple Flats	Invenergy Services LLC	Louisville, IL	493 GWh	Oct 2024	Dec 2025	Solar
Mansfield Mill	IPC-Mansfield Mill	Mansfield, LA	859 GWh	Sep 1981	Dec 2025	Natural Gas : 54.1% Black Liquor : 32.5% Wood/Wood Waste Solids : 11.7% Tire-derived Fuels : 1.7%
Mankato Energy Center	MEC Holdings, LLC	Mankato, MN	3 TWh	Jun 2006	Dec 2024	Natural Gas
Manitowoc	Manitowoc Public Utilities	Manitowoc, WI	178 GWh	May 1955	Dec 2025	Wood/Wood Waste Solids : 90.5% Petroleum Coke : 5.3% Bituminous Coal : 3.9%
Manistique	Cloverland Electric Co-op	Manistique, MI	1 GWh	Jun 1960	Dec 2024	Distillate Fuel Oil
Malmedal Solar Garden	Malmedal Garden LLC	Starbuck, MN	2 GWh	Jun 2019	Dec 2024	Solar
Main Street (MI)	Village of Sebewaing - (MI)	Sebewaing, MI	1 MWh	May 1947	Dec 2023	Distillate Fuel Oil
Magnolia Power	Magnolia Power Holdings LLC	Plaquemine, LA	100 GWh	-	Dec 2025	Natural Gas
Magnet Cove	Arkansas Electric Coop Corp	Malvern, AR	4 TWh	Jun 2005	Dec 2025	Natural Gas
Macksburg Wind Project	MidAmerican Energy Co	Macksburg, IA	330 GWh	Nov 2014	Dec 2024	Wind
Macbeth Solar	Macbeth Solar, LLC	Montague, MI	39 GWh	Apr 2022	Dec 2024	Solar
M72 West Solar	Heritage Sustainable Energy. LLC	Traverse City, MI	3 GWh	Nov 2019	Dec 2024	Solar
M L Hibbard	ALLETE, Inc.	Duluth, MN	98 GWh	May 1949	Dec 2025	Wood/Wood Waste Solids : 91.0% Subbituminous Coal : 6.9% Natural Gas : 2.1%
M. G. Emmett J. Bean Federal Center	U.S. General Services Administration	Indianapolis, IN	519 MWh	Mar 2011	Dec 2024	Solar
Lyra Community Solar	Lyra Community Solar	Waterville, MN	5 GWh	Jan 2018	Dec 2024	Solar
Lyons Road	Lyons Road Solar, LLC	Owosso, MI	40 GWh	Dec 2021	Dec 2024	Solar
Lyman Garden	Excelsior Energy Capital	Northfield, MN	2 GWh	Oct 2020	Dec 2024	Solar
Luverne Wind Energy Center	Otter Tail Power Co	Luverne, ND	110 GWh	Aug 2009	Dec 2024	Wind
Luther College Wind Project	Luther College Wind Energy Project LLC	Decorah, IA	3 GWh	Sep 2011	Dec 2024	Wind
Lundgren Wind Project	MidAmerican Energy Co	Otho, IA	804 GWh	Jul 2014	Dec 2024	Wind
Lukuc B Community Solar LLC CSG	Lukuc B Community Solar LLC	Herrin, IL	4 GWh	Jun 2021	Dec 2024	Solar
Lucky Wind	Lucky Wind, LLC (Longroad)	Pipestone, MN	2 GWh	Nov 2004	Dec 2024	Wind
LSU Cogen	LSU and A&M College	Baton Rouge, LA	45 GWh	Nov 2004	Dec 2025	Natural Gas
LSP-Cottage Grove LP	Cottage Grove Operating Services LLC	Cottage Grove, MN	1 TWh	Sep 1997	Dec 2024	Natural Gas
LRWRA	Entegrity Solar LRWRA, LLC	Little Rock, AR	2 GWh	Jul 2023	Dec 2024	Solar
Lowry CSG2, LLC	Nautilus Solar Solutions	Glenwood, MN	2 GWh	Nov 2020	Dec 2024	Solar
Louisiana Tech University Power Plant	Louisiana Tech University	Ruston, LA	42 GWh	Jun 2004	Dec 2024	Natural Gas
Louisiana Sugar Refining	Louisiana Sugar Refining LLC	Gramercy, LA	20 GWh	Aug 1930	Dec 2024	Natural Gas
Louisiana 1	Entergy Louisiana LLC	Baton Rouge, LA	3 TWh	Sep 1951	Dec 2025	Natural Gas : 72.9% Other Gas : 27.1%
Louise Solar	National Grid Renewables	Taopi, MN	93 GWh	Nov 2024	Dec 2025	Solar
Louisa	MidAmerican Energy Co	Muscatine, IA	5 TWh	Sep 1983	Dec 2025	Subbituminous Coal : 99.4% Natural Gas : 0.6%
Loud	Consumers Energy Co - (MI)	Oscoda, MI	17 GWh	Dec 1912	Dec 2024	Water
Lost Lakes Wind Farm LLC	Lost Lakes Wind Farm LLC	Lake Park, IA	244 GWh	Nov 2009	Dec 2024	Wind
Lorin Industries	Lorin Industries	Muskegon, MI	5 GWh	Dec 1989	Dec 2024	Natural Gas
Loon Garden	Loon Garden LLC	Waseca, MN	2 GWh	Jan 2020	Dec 2024	Solar
Long Lake Solar, LLC	Long Lake Solar, LLC	West Helena, AR	371 GWh	-	Dec 2025	Solar
Logansport Solar	Cardinal Renewables	Logansport, IN	23 GWh	Aug 2021	Dec 2024	Solar
Livingston Generating Station	CMS Generation MI Power LLC	Gaylord, MI	20 GWh	May 1999	Dec 2024	Natural Gas
Little Quinnesec Falls Hydro Project	Eagle Creek Renewable Energy, LLC	Niagara, WI	57 GWh	Nov 1900	Dec 2024	Water
Little Gypsy	Entergy Louisiana LLC	La Place, LA	772 GWh	Feb 1961	Dec 2025	Natural Gas
Little Falls (MN)	ALLETE, Inc.	Little Falls, MN	32 GWh	Dec 1905	Dec 2024	Water
Little Chute	City of Kaukauna	Combined Locks, WI	24 GWh	May 1948	Dec 2024	Water
Litchfield	Litchfield Public Utilities	Litchfield, MN	143 MWh	Aug 1963	Dec 2024	Natural Gas : 62.5% Distillate Fuel Oil : 37.5%
Linton	Indiana Municipal Power Agency	Linton, IN	11 GWh	Jun 2022	Dec 2024	Solar
Lineage MS	Madison Energy Holdings LLC	Richland, MS	2 GWh	Nov 2021	May 2024	Solar
Lindstrom Solar CSG	National Grid Renewables	Lindstrom, MN	5 GWh	Mar 2018	Dec 2024	Solar
Linden 03 CSG	SunShare Management	Belle Plaine, MN	2 GWh	Apr 2020	Dec 2024	Solar
Linden 02 CSG	SunShare Management	Belle Plaine, MN	2 GWh	Apr 2020	Dec 2024	Solar
Linden 01 CSG	SunShare Management	Belle Plaine, MN	2 GWh	Apr 2020	Dec 2024	Solar
Lind Solar CSG	Terraform Arcadia	Young America, MN	8 GWh	Jan 2017	Dec 2024	Solar
Lincoln Solar	Ecos Energy LLC	Merrillville, IN	608 MWh	Nov 2012	Dec 2024	Solar
Lincoln Land Wind	Lincoln Land Wind, LLC	TBD, IL	1 TWh	Oct 2021	Dec 2025	Wind
Lincoln Heights II	ALLETE Clean Energy	Lake Benton, MN	7 GWh	Apr 2006	Dec 2024	Wind
Lincoln Heights I	ALLETE Clean Energy	Lake Benton, MN	10 GWh	Apr 2006	Dec 2024	Wind
Lime Creek	Interstate Power and Light Co	Mason City, IA	115 MWh	Apr 1991	Aug 2024	Distillate Fuel Oil
Lily Garden	Lily Garden LLC	Waseca, MN	2 GWh	Jun 2023	Dec 2024	Solar
Lightfoot Solar, LLC	Lightfoot Solar, LLC	Luzerne, MI	19 GWh	Sep 2023	Dec 2024	Solar
Libra Community Solar	National Grid Renewables	Glenwood, MN	2 GWh	Oct 2018	Dec 2024	Solar
Liberty Pole DPC Solar	SoCore Energy LLC	Viroqua, WI	2 GWh	Apr 2017	Dec 2025	Solar
Liberty I & II LFGTE	Wabash Valley Power Assn, Inc	Monticello, IN	27 GWh	Jul 2005	Dec 2023	Landfill Gas
Liberty County Solar Project	Liberty County Solar Project, LLC	Dayton, TX	245 GWh	Aug 2024	Dec 2025	Solar
Lewis Creek	Entergy Texas Inc.	Willis, TX	2 TWh	Nov 1970	Dec 2025	Natural Gas
Lewis & Clark	Montana-Dakota Utilities Co	Richland, MT	10 GWh	Sep 1958	Dec 2025	Natural Gas
Leven Garden Solar	Leven Garden LLC	Villard, MN	2 GWh	Apr 2020	Dec 2024	Solar
Letts Creek Solar, LLC	AES Distributed Energy	Grass Lake, MI	28 GWh	Nov 2022	Dec 2024	Solar
LeSun CSG, LLC	Cypress Creek Renewables	Waterville, MN	8 GWh	Dec 2017	Dec 2024	Solar

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#60	Alcoa Power Generating, Inc. - Yadkin Division	610.0 GWh	4
#27	Associated Electric Cooperative, Inc.	24.1 TWh	47
#13	Duke Energy Carolinas	112.4 TWh	565
#52	Duke Energy Progress West	4.3 TWh	10
#23	Louisville Gas and Electric Company and Kentucky Utilities Company	34.3 TWh	25
#1	PJM Interconnection, LLC	879.0 TWh	2,465
#6	Southern Company Services, Inc. - Trans	250.9 TWh	417
#5	Southwest Power Pool	300.1 TWh	835
#51	Southwestern Power Administration	4.8 TWh	34
#9	Tennessee Valley Authority	162.4 TWh	204

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#1	PJM Interconnection, LLC	879.0 TWh	2,465
#2	Midcontinent Independent System Operator, Inc.	659.4 TWh	2,831
#3	Electric Reliability Council of Texas, Inc.	484.9 TWh	1,313
#5	Southwest Power Pool	300.1 TWh	835
#6	Southern Company Services, Inc. - Trans	250.9 TWh	417
#7	California Independent System Operator	179.9 TWh	2,075
#9	Tennessee Valley Authority	162.4 TWh	204
#10	Florida Power & Light Co.	150.5 TWh	187
#12	New York Independent System Operator	134.0 TWh	1,211
#13	Duke Energy Carolinas	112.4 TWh	565