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 2024
Annual Generation	631.0 TWh
Power Plants	2,653
Utilities	1,202
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 \| 39.8% Coal \| 26.3% Wind \| 15.6% Nuclear \| 14% Solar \| 2.1% Water \| 1.7% Other Fuel \| 0.4%

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 Stone	Otter Tail Power Co	Big Stone City, SD	2 TWh	Apr 1975	Aug 2024	Subbituminous Coal : 99.8%
Luverne Wind Energy Center	Otter Tail Power Co	Luverne, ND	159 GWh	Aug 2009	Dec 2023	Wind
Ashtabula Wind Energy Center	Otter Tail Power Co	Luverne, ND	123 GWh	Sep 2008	Dec 2023	Wind
Langdon Wind Energy Center	Otter Tail Power Co	Langdon, ND	105 GWh	Nov 2007	Dec 2023	Wind
Astoria Station	Otter Tail Power Co	Astoria, SD	410 GWh	Mar 2021	Aug 2024	Natural Gas
Hoot Lake Solar	Otter Tail Power Co	Fergus Falls, MN	69 GWh	Jul 2023	Aug 2024	Solar
Otter Creek Ethanol Poet - Ashton	Otter Creek Ethanol LLC - Poet Ashton	Ashton, IA	45 GWh	Feb 2004	Aug 2024	Natural Gas
Otsego Mill Power Plant	Otsego Paper Inc	Otsego, MI	161 GWh	Oct 1995	Dec 2023	Natural Gas
Osceola Windpower II	Osceola Windpower II	Harris, IA	199 GWh	Aug 2008	Aug 2024	Wind
OREG 3 Inc	Ormat Nevada Inc	Trimont, MN	36 GWh	Jul 2010	Aug 2024	Waste Heat
Ivanhoe Generation Facility	Orion Engineered Carbons	Franklin, LA	33 GWh	Mar 2023	Dec 2023	Waste Heat
Benton County Wind Farm	Orion Energy Group LLC	Earl Park, IN	328 GWh	Apr 2008	Dec 2023	Wind
Orion Community Solar	Orion Community Solar	St. Joseph, MN	5 GWh	Dec 2016	Dec 2023	Solar
Optimum Wind 7 LLC	Optimum Wind 7 LLC	Nevada, IA	10 GWh	Feb 2017	Dec 2023	Wind
Optimum Wind 6 LLC	Optimum Wind 6 LLC	Nevada, IA	9 GWh	Feb 2017	Dec 2023	Wind
Optimum Wind 5 LLC	Optimum Wind 5 LLC	Nevada, IA	8 GWh	Feb 2017	Dec 2023	Wind
Optimum Wind 4 LLC	Optimum Wind 4 LLC	Nevada, IA	8 GWh	Feb 2017	Dec 2023	Wind
Optimum Wind 3 LLC	Optimum Wind 3 LLC	Nevada, IA	7 GWh	Feb 2017	Dec 2023	Wind
Indy Solar II, LLC	Onward Energy	Indianapolis, IN	15 GWh	Nov 2013	Aug 2024	Solar
Indy Solar I, LLC	Onward Energy	Indianapolis, IN	15 GWh	Nov 2013	Aug 2024	Solar
Indy Solar III, LLC	Onward Energy	Indianapolis, IN	14 GWh	Nov 2013	Aug 2024	Solar
Sumrall II Solar Farm	Onward Energy	Sumrall, MS	100 GWh	Nov 2017	Aug 2024	Solar
Olney Solar II CSG	Olney Solar II, LLC	Olney, IL	4 GWh	May 2021	Dec 2023	Solar
Olmsted Waste Energy	Olmsted County Public Works	Rochester, MN	40 GWh	Mar 1987	Dec 2023	Non-biogenic Municipal Solid Waste : 54.5% Biogenic Municipal Solid Waste : 44.6% Natural Gas : 0.9%
Oliver Wind III, LLC	Oliver Wind III, LLC	Mandan, ND	419 GWh	Dec 2016	Aug 2024	Wind
Olinda Trail Solar	Olinda Trail Solar LLC	Lindstrom, MN	2 GWh	Aug 2019	Dec 2023	Solar
Old Gold Energy Center, LLC	Old Gold Energy Center, LLC	Joice, IA	107 GWh	Sep 2001	Dec 2023	Wind
OE IL Solar 3	OE IL Solar 3, LLC	Oregon, IL	4 GWh	Feb 2022	Dec 2023	Solar
Stiles	Oconto Electric Cooperative	Oconto Falls, WI	5 GWh	Feb 1949	Dec 2023	Water
Taft Cogeneration Facility	Occidental Chemical Corporation	Hahnville, LA	6 TWh	Jun 2002	Aug 2024	Natural Gas : 98.9% Other Gas : 1.1%
Shakopee Met Council WTP	Oak Leaf Solar V LLC	Shakopee, MN	2 GWh	Feb 2016	Dec 2023	Solar
Novel OYA of Osakis CSG	NRG MN Community LLC	Osakis, MN	9 GWh	Jun 2018	Dec 2023	Solar
Novel - OYA of Mapleton CSG	NRG MN Community LLC	Mapleton, MN	6 GWh	Jun 2018	Dec 2023	Solar
Plum Point Energy Station	NRG Energy Services - Plum Point	Osceola, AR	3 TWh	Aug 2010	Aug 2024	Subbituminous Coal : 99.7%
Odin Wind Farm LLC	NRG Energy Gas & Wind Holdings Inc	Mountainlake, MN	34 GWh	Apr 2008	Dec 2023	Wind
Cottonwood Energy Project	NRG Cottonwood Tenant LLC	Deweyville, TX	6 TWh	Jun 2003	Aug 2024	Natural Gas
Genesee Power Station LP	NorthStar Clean Energy	Flint, MI	115 GWh	Nov 1995	Dec 2023	Wood/Wood Waste Solids : 95.1% Tire-derived Fuels : 4.8%
Grayling Generating Station	NorthStar Clean Energy	Grayling, MI	134 GWh	Apr 1992	Dec 2023	Wood/Wood Waste Solids : 95.6% Tire-derived Fuels : 4.2%
Indiana Harbor E 5 AC Station	Northlake Energy	East Chicago, IN	663 GWh	Apr 1996	Dec 2023	Blast Furnace Gas : 93.8% Natural Gas : 6.2%
Northfield Holdco CSG	Northfield Holdco LLC	Northfield, MN	7 GWh	Nov 2017	Dec 2023	Solar
Northfield Community Solar	Northfield Community Solar	Northfield, MN	8 GWh	Nov 2016	Dec 2023	Solar
Rock Aetna Power Partners	Northern States Power Co - Minnesota	Woodstock, MN	79 GWh	Nov 2022	Dec 2023	Wind
Northern Wind	Northern States Power Co - Minnesota	Lake Wilson, MN	364 GWh	Dec 2022	Aug 2024	Wind
Crowned Ridge Wind II Energy Center	Northern States Power Co - Minnesota	Watertown, SD	797 GWh	Nov 2020	Aug 2024	Wind
Blazing Star 2 Wind Farm	Northern States Power Co - Minnesota	Hendricks, MN	823 GWh	Dec 2020	Aug 2024	Wind
Freeborn Wind Farm	Northern States Power Co - Minnesota	Glenville, MN	802 GWh	Apr 2021	Aug 2024	Wind
Blazing Star Wind Farm 1	Northern States Power Co - Minnesota	Hendricks, MN	812 GWh	Mar 2020	Aug 2024	Wind
Angus Anson	Northern States Power Co - Minnesota	Sioux Falls, SD	232 GWh	Jul 1994	Dec 2023	Natural Gas : 97.6% Distillate Fuel Oil : 2.4%
Sherburne County	Northern States Power Co - Minnesota	Becker, MN	7 TWh	Mar 1976	Aug 2024	Subbituminous Coal : 99.8%
Dells	Northern States Power Co - Minnesota	Eau Claire, WI	43 GWh	Dec 1922	Dec 2023	Water
Blue Lake	Northern States Power Co - Minnesota	Shakopee, MN	63 GWh	Feb 1974	Dec 2023	Natural Gas
Jeffers Wind 20 LLC	Northern States Power Co - Minnesota	Jeffers, MN	192 GWh	Sep 2008	Dec 2023	Wind
Mower County Wind Energy Center	Northern States Power Co - Minnesota	Grand Meadow, MN	316 GWh	Nov 2006	Dec 2023	Wind
Nobles Wind Project	Northern States Power Co - Minnesota	Reading, MN	739 GWh	Nov 2010	Aug 2024	Wind
Apple River	Northern States Power Co - Minnesota	Somerset, WI	11 GWh	Dec 1900	Dec 2023	Water
Grand Meadow	Northern States Power Co - Minnesota	Dexter, MN	326 GWh	Nov 2008	Dec 2023	Wind
Cornell	Northern States Power Co - Minnesota	Chippewa Falls, WI	73 GWh	Jun 1976	Dec 2023	Water
Inver Hills	Northern States Power Co - Minnesota	Inver Grove Heights, MN	78 GWh	Mar 1972	Dec 2023	Natural Gas : 65.6% Distillate Fuel Oil : 34.4%
Red Wing	Northern States Power Co - Minnesota	Red Wing, MN	121 GWh	Sep 1949	Aug 2024	Non-biogenic Municipal Solid Waste : 53.8% Biogenic Municipal Solid Waste : 44.0% Wood/Wood Waste Solids : 1.5% Natural Gas : 0.7%
Riverside (MN)	Northern States Power Co - Minnesota	Minneapolis, MN	3 TWh	Mar 1987	Aug 2024	Natural Gas
Allen S King	Northern States Power Co - Minnesota	Oak Park Heights, MN	563 GWh	Feb 1958	Aug 2024	Subbituminous Coal : 99.5%
White River (WI)	Northern States Power Co - Minnesota	Ashland, WI	5 GWh	Dec 1906	Dec 2023	Water
Thornapple	Northern States Power Co - Minnesota	Bruce, WI	2 GWh	Dec 1926	Dec 2023	Water
Ladysmith Dam	Northern States Power Co - Minnesota	Ladysmith, WI	10 GWh	Dec 1939	Dec 2023	Water
Big Falls	Northern States Power Co - Minnesota	Glen Fora, WI	33 GWh	Dec 1921	Dec 2023	Water
Bay Front	Northern States Power Co - Minnesota	Ashland, WI	155 GWh	Dec 1948	Dec 2023	Tire-derived Fuels : 51.6% Wood/Wood Waste Solids : 48.2%
Wilmarth	Northern States Power Co - Minnesota	Mankato, MN	106 GWh	Aug 1948	Aug 2024	Non-biogenic Municipal Solid Waste : 54.3% Biogenic Municipal Solid Waste : 44.4% Natural Gas : 1.4%
Monticello Nuclear Facility	Northern States Power Co - Minnesota	Monticello, MN	5 TWh	May 1971	Aug 2024	Nuclear
High Bridge	Northern States Power Co - Minnesota	St. Paul, MN	3 TWh	Apr 2008	Aug 2024	Natural Gas
Hennepin Island	Northern States Power Co - Minnesota	Minneapolis, MN	43 GWh	Sep 1954	Dec 2023	Water
Lake Benton II	Northern States Power Co - Minnesota	Ruthton, MN	431 GWh	May 1999	Dec 2023	Wind
Black Dog	Northern States Power Co - Minnesota	Burnsville, MN	2 TWh	Sep 1954	Dec 2023	Natural Gas
Community Wind North LLC	Northern States Power Co - Minnesota	Verdi Township, MN	109 GWh	Apr 2011	Dec 2023	Wind
Courtenay Wind Farm	Northern States Power Co - Minnesota	Courtenay, ND	722 GWh	Nov 2016	Aug 2024	Wind
Superior Falls	Northern States Power Co - Minnesota	Ironwood, MI	9 GWh	Dec 1916	Dec 2023	Water
Saxon Falls	Northern States Power Co - Minnesota	Saxon, WI	9 GWh	Dec 1912	Dec 2023	Water
Jim Falls	Northern States Power Co - Minnesota	Jim Falls, WI	121 GWh	Jun 1988	Dec 2023	Water
Prairie Island	Northern States Power Co - Minnesota	Welch, MN	6 TWh	Jan 1974	Aug 2024	Nuclear
Border Winds Wind Farm	Northern States Power Co - Minnesota	Rolla, ND	583 GWh	Jul 2015	Dec 2023	Wind
Wissota	Northern States Power Co - Minnesota	Chippewa Falls, WI	133 GWh	Dec 1916	Dec 2023	Water
Wheaton	Northern States Power Co - Minnesota	Eau Claire, WI	31 GWh	Dec 1972	Dec 2023	Distillate Fuel Oil : 58.1% Natural Gas : 41.9%
Trego	Northern States Power Co - Minnesota	Hayward, WI	7 GWh	Dec 1926	Dec 2023	Water
St Croix Falls	Northern States Power Co - Minnesota	St Croix Falls, WI	83 GWh	Dec 1909	Dec 2023	Water
Menomonie	Northern States Power Co - Minnesota	Menomonie, WI	24 GWh	Dec 1957	Dec 2023	Water
Holcombe	Northern States Power Co - Minnesota	Holcombe, WI	94 GWh	Dec 1949	Dec 2023	Water
French Island	Northern States Power Co - Minnesota	La Cross, WI	59 GWh	Dec 1939	Aug 2024	Wood/Wood Waste Solids : 52.3% Non-biogenic Municipal Solid Waste : 25.5% Biogenic Municipal Solid Waste : 20.8% Distillate Fuel Oil : 1.1%
Pleasant Valley Wind Farm	Northern States Power Co - Minnesota	Dexter, MN	747 GWh	Jul 2015	Dec 2023	Wind
Chippewa Falls	Northern States Power Co - Minnesota	Chippewa Falls, WI	59 GWh	Dec 1927	Dec 2023	Water
Cedar Falls (WI)	Northern States Power Co - Minnesota	Menomonie, WI	33 GWh	Dec 1909	Dec 2023	Water
Northern Lights Wind LLC	Northern Lights Wind LLC (Longroad)	Pipestone, MN	157 MWh	Nov 2004	Dec 2023	Wind
Sugar Creek Power	Northern Indiana Pub Serv Co	West Terre Haute, IN	3 TWh	May 2002	Aug 2024	Natural Gas
Norway (IN)	Northern Indiana Pub Serv Co	Monticello, IN	14 GWh	May 1923	Dec 2023	Water
Oakdale	Northern Indiana Pub Serv Co	Monticello, IN	20 GWh	Oct 1925	Dec 2023	Water
Michigan City	Northern Indiana Pub Serv Co	Michigan City, IN	1 TWh	Apr 1974	Aug 2024	Subbituminous Coal : 78.7% Bituminous Coal : 20.2% Natural Gas : 1.1%
R M Schahfer	Northern Indiana Pub Serv Co	Wheatfield, IN	2 TWh	Nov 1976	Aug 2024	Bituminous Coal : 97.4% Natural Gas : 2.6%
North Star Solar Project	North Star Solar PV LLC	North Branch, MN	183 GWh	Nov 2016	Aug 2024	Solar
North Branch (MN)	North Branch Water & Light Comm	North Branch, MN	257 MWh	Sep 2003	Dec 2023	Distillate Fuel Oil
Lennon Generating	North American Natural Res	Lennon, MI	27 GWh	Jan 2001	Dec 2023	Landfill Gas
Peoples Generating Station	North American Natural Res	Ann Arbor, MI	17 GWh	Aug 1995	Dec 2023	Landfill Gas
Autumn Hills Generating Facility	North American Natural Res	Zeeland, MI	12 GWh	Jun 2009	Dec 2023	Landfill Gas

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#61	Alcoa Power Generating, Inc. - Yadkin Division	894.0 GWh	4
#26	Associated Electric Cooperative, Inc.	22.7 TWh	47
#13	Duke Energy Carolinas	110.9 TWh	556
#51	Duke Energy Progress West	4.1 TWh	10
#24	Louisville Gas and Electric Company and Kentucky Utilities Company	33.2 TWh	20
#1	PJM Interconnection, LLC	843.8 TWh	2,305
#21	Public Service Company of Colorado	45.1 TWh	201
#5	Southwest Power Pool	290.4 TWh	762
#53	Southwestern Power Administration	3.5 TWh	31
#9	Tennessee Valley Authority	157.5 TWh	170

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#1	PJM Interconnection, LLC	843.8 TWh	2,305
#2	Midcontinent Independent System Operator, Inc.	631.0 TWh	2,653
#3	Electric Reliability Council of Texas, Inc.	461.0 TWh	1,139
#5	Southwest Power Pool	290.4 TWh	762
#6	Southern Company Services, Inc. - Trans	247.9 TWh	393
#7	California Independent System Operator	191.5 TWh	1,943
#9	Tennessee Valley Authority	157.5 TWh	170
#10	Florida Power & Light Co.	147.7 TWh	159
#12	New York Independent System Operator	130.0 TWh	1,100
#13	Duke Energy Carolinas	110.9 TWh	556