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	Jul 2026
Annual Generation	669.4 TWh
Power Plants	3,038
Utilities	1,345
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% Coal \| 26.5% Wind \| 14.9% Nuclear \| 13.9% Solar \| 5.7% Water \| 1.4% Other Fuel \| 0.6%

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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
13 Mile Solar, LLC	13 Mile Solar, LLC	Battle Creek, MI	4 GWh	Nov 2020	Dec 2025	Solar
2662 Freeport Solar 1 CSG	2662 Freeport Solar 1, LLC	Freeport, IL	3 GWh	Nov 2020	Dec 2025	Solar
Briscoe 1A	7th Road Solar 1, LLC (Briscoe 1A)	Tonica, IL	4 GWh	Jan 2023	Dec 2025	Solar
Briscoe 2A	7th Road Solar 2, LLC (Briscoe 2A)	Lostant, IL	5 GWh	Jan 2023	Dec 2025	Solar
Tatanka Wind Power LLC	Acciona Wind Energy USA LLC	Ashley, ND	411 GWh	Dec 2007	May 2026	Wind
Velva Windfarm LLC	Acciona Wind Energy USA LLC	Velva, ND	20 GWh	Nov 2005	Dec 2025	Wind
Apple Canyon Lake Solar	ACM Solar, LLC.	Apple River, IL	3 GWh	Nov 2020	Dec 2025	Solar
Ada Cogeneration LP	Ada Cogeneration LLC	Ada, MI	185 GWh	Sep 1990	Dec 2025	Natural Gas
Brown County Wind Turbine	Adams Electric Cooperative	Mount Sterling, IL	3 MWh	Aug 2011	Feb 2025	Wind
Adams PV Plant	Adams PV Plant (WI)	Adams, WI	15 GWh	Jun 2023	Dec 2025	Solar
Lemond Solar	Adapture Renewables, Inc.	Owatonna, MN	9 GWh	May 2017	Dec 2025	Solar
Calhoun County Solar Project	AES Clean Energy	Sheridan Township, MI	250 GWh	Feb 2025	May 2026	Solar
Triple S Solar I LLC CSG	AES Clean Energy	Kansas, IL	381 MWh	Sep 2025	Dec 2025	Solar
Delta Wind Farm (MS)	AES Clean Energy	Dundee, MS	514 GWh	Mar 2024	May 2026	Wind
Morris Solar	AES Clean Energy	Kirksville, MO	416 GWh	May 2025	May 2026	Solar
Oak Ridge Solar	AES Clean Energy	Oak Ridge, LA	413 GWh	Nov 2023	May 2026	Solar
AES Belleville Solar LLC	AES Distributed Energy	Belleville, IL	6 GWh	Aug 2021	Dec 2025	Solar
Cement City Solar, LLC	AES Distributed Energy	Cement City, MI	32 GWh	Dec 2022	Dec 2025	Solar
Valparaiso Solar, LLC	AES Distributed Energy	Valparaiso, IN	427 MWh	Nov 2012	Oct 2025	Solar
Waterloo Solar, LLC	AES Distributed Energy	Waterloo, IN	584 MWh	Dec 2011	Jan 2025	Solar
Hobart Solar, LLC	AES Distributed Energy	Hobart, IN	49 MWh	Oct 2012	Dec 2025	Solar
Letts Creek Solar, LLC	AES Distributed Energy	Grass Lake, MI	25 GWh	Nov 2022	Dec 2025	Solar
Pullman Solar, LLC	AES Distributed Energy	Lee Township, MI	33 GWh	Nov 2022	Dec 2025	Solar
AES Petersburg	AES Indiana	Petersburg, IN	5 TWh	May 1967	May 2026	Bituminous Coal : 99.8%
Eagle Valley (IN)	AES Indiana	Martinsville, IN	5 TWh	Nov 1951	May 2026	Natural Gas
Harding Street	AES Indiana	Indianapolis, IN	4 TWh	May 1958	May 2026	Natural Gas
Georgetown	AES Indiana	Indianapolis, IN	307 GWh	May 2000	Dec 2025	Natural Gas
Warrick	AGC Division of APGI Inc	Newburgh, IN	3 TWh	Mar 1960	May 2026	Bituminous Coal : 98.3% Natural Gas : 1.7%
Truman Solar	Agilitas Energy, Inc.	Colombia, MO	20 GWh	May 2021	Dec 2025	Solar
Agrilectric Power Partners Ltd	Agrilectric Power Partners Ltd	Lake Charles, LA	84 GWh	Jun 1984	Dec 2025	Agricultural By-Products : 99.5%
Agriwind	Agriwind Holdings, LLC	Tiskilwa, IL	17 GWh	Jun 2007	Dec 2025	Wind
Rhinelander Mill	Ahlstrom-Munksjo	Rhinelander, WI	7 GWh	Nov 1917	May 2026	Water
Mosinee Mill	Ahlstrom-Munksjo NA Specialty Solutions, LLC	Mosinee, WI	101 GWh	Jun 1916	May 2026	Black Liquor : 43.1% Natural Gas : 22.1% Water : 15.5% Bituminous Coal : 12.0% Wood/Wood Waste Solids : 5.4% Sludge Waste : 1.4%
Geismar Cogen	Air Liquide Large Industries U S LP	Geismar, LA	528 GWh	Dec 1999	Dec 2025	Natural Gas
Air Products Port Arthur	Air Products LLC	Port Arthur, TX	1 TWh	Oct 2000	Dec 2025	Natural Gas : 93.4% Other Gas : 6.6%
Alden Road Harvard Solar 1	Alden Road Harvard Solar 1, LLC	Harvard, IL	4 GWh	Nov 2020	Dec 2025	Solar
Odell Wind Farm	Algonquin Power Co	Mountain Lake, MN	769 GWh	Jun 2016	Dec 2025	Wind
Cisco	ALLETE Clean Energy	Brewster, MN	12 GWh	Jan 2008	Dec 2025	Wind
Lincoln Heights II	ALLETE Clean Energy	Lake Benton, MN	5 GWh	Apr 2006	Dec 2025	Wind
Lincoln Heights I	ALLETE Clean Energy	Lake Benton, MN	8 GWh	Apr 2006	Dec 2025	Wind
Glen Ullin Energy Center	ALLETE Clean Energy	Glen Ullin, ND	423 GWh	Nov 2019	May 2026	Wind
Storm Lake 1	ALLETE Clean Energy	Alta, IA	87 GWh	Apr 1999	Dec 2025	Wind
Storm Lake II	ALLETE Clean Energy	Alta, IA	115 GWh	Mar 1999	Dec 2025	Wind
Lake Benton I	ALLETE Clean Energy	Lake Benton, MN	235 GWh	Jan 1998	Dec 2025	Wind
Knife Falls	ALLETE, Inc.	Cloquet, MN	9 GWh	Dec 1921	Dec 2025	Water
Rapids Energy Center	ALLETE, Inc.	Grand Rapids, MN	40 GWh	Dec 1942	Dec 2025	Natural Gas : 81.7% Water : 18.3%
Little Falls (MN)	ALLETE, Inc.	Little Falls, MN	27 GWh	Dec 1905	Dec 2025	Water
Clay Boswell	ALLETE, Inc.	Cohasset, MN	6 TWh	Jun 1958	May 2026	Subbituminous Coal : 99.8%
Blanchard	ALLETE, Inc.	Royalton, MN	72 GWh	Jan 1925	Dec 2025	Water
Syl Laskin	ALLETE, Inc.	Hoyt Lakes, MN	196 GWh	May 1953	Dec 2025	Natural Gas
Prairie River	ALLETE, Inc.	Grand Rapids, MN	2 GWh	Mar 1920	Dec 2025	Water
Bison I Wind Energy Center	ALLETE, Inc.	New Salem, ND	196 GWh	Nov 2010	Dec 2025	Wind
M L Hibbard	ALLETE, Inc.	Duluth, MN	98 GWh	May 1949	May 2026	Wood/Wood Waste Solids : 91.1% Subbituminous Coal : 6.8% Natural Gas : 2.1%
Pillager	ALLETE, Inc.	Pillager, MN	7 GWh	Dec 1916	Dec 2025	Water
Fond Du Lac	ALLETE, Inc.	Duluth, MN	38 GWh	Dec 1923	Dec 2025	Water
Scanlon	ALLETE, Inc.	Scanlon, MN	7 GWh	Dec 1922	Dec 2025	Water
Sylvan	ALLETE, Inc.	Pillager, MN	10 GWh	Dec 1912	Dec 2025	Water
Thomson	ALLETE, Inc.	Carlton, MN	198 GWh	Dec 1906	Dec 2025	Water
Winton	ALLETE, Inc.	Winton, MN	18 GWh	Jul 1923	Dec 2025	Water
Taconite Ridge 1 Wind Energy Center	ALLETE, Inc.	Mountain Iron, MN	53 GWh	Apr 2008	Dec 2025	Wind
Bison 3 Wind Energy Center	ALLETE, Inc.	New Salem, ND	268 GWh	Nov 2012	Dec 2025	Wind
Bison 4 Wind Energy Center	ALLETE, Inc.	New Salem, ND	573 GWh	Dec 2014	Dec 2025	Wind
Bison 2 Wind Energy Center	ALLETE, Inc.	New Salem, ND	270 GWh	Nov 2012	Dec 2025	Wind
Laskin Solar	ALLETE, Inc.	Hoyt Lakes, MN	8 GWh	Nov 2022	Dec 2025	Solar
Jean Duluth Solar	ALLETE, Inc.	Duluth, MN	2 GWh	Nov 2022	Dec 2025	Solar
Sylvan Solar	ALLETE, Inc.	Pillager, MN	25 GWh	Jun 2023	Dec 2025	Solar
Allie L.L.C. (CSG)	Allie L.L.C.	Renville, MN	2 GWh	Jul 2022	Dec 2025	Solar
Princeton Solar	Altorfer Inc.	Princeton, IL	904 MWh	Feb 2025	Dec 2025	Solar
Rantoul Solar	Altorfer Inc.	Rantoul, IL	5 MWh	Nov 2016	Dec 2025	Solar
Malmedal Solar Garden	Altus Power America Management, LLC	Starbuck, MN	2 GWh	Jun 2019	Dec 2025	Solar
FastSun 19 CSG	Altus Power America Management, LLC	Farmington, MN	2 GWh	May 2020	Dec 2025	Solar
Griffith	Altus Power America Management, LLC	Griffith, IN	3 GWh	Feb 2013	Dec 2025	Solar
FastSun 18 CSG	Altus Power America Management, LLC	La Crescent, MN	2 GWh	Dec 2019	Dec 2025	Solar
Cedar Falls Solar Farm	Altus Power America Management, LLC	Cedar Falls, IA	2 GWh	Mar 2016	Dec 2025	Solar
FastSun 13 CSG	Altus Power America Management, LLC	Osakis, MN	2 GWh	Nov 2019	Dec 2025	Solar
Wollan Garden Solar	Altus Power America Management, LLC	Starbuck, MN	2 GWh	Jun 2019	Dec 2025	Solar
FastSun 14 CSG	Altus Power America Management, LLC	Eagle Lake, MN	2 GWh	Nov 2019	Dec 2025	Solar
FastSun12 CSG	Altus Power America Management, LLC	Morristown, MN	2 GWh	Jun 2021	Dec 2025	Solar
FastSun 21 CSG	Altus Power America Management, LLC	St. Cloud, MN	2 GWh	May 2021	Dec 2025	Solar
FastSun 1 CSG	Altus Power America Management, LLC	Dassel, MN	2 GWh	Nov 2019	Dec 2025	Solar
FastSun 2 CSG	Altus Power America Management, LLC	Randolph Township, MN	2 GWh	May 2020	Dec 2025	Solar
FastSun 5 CSG	Altus Power America Management, LLC	La Crescent, MN	2 GWh	Dec 2019	Dec 2025	Solar
FastSun 7 CSG	Altus Power America Management, LLC	Stewart, MN	2 GWh	Nov 2019	Dec 2025	Solar
FastSun 3 CSG	Altus Power America Management, LLC	Albany, MN	2 GWh	Nov 2019	Dec 2025	Solar
FastSun 9 CSG	Altus Power America Management, LLC	Zumbrota, MN	2 GWh	Feb 2020	Dec 2025	Solar
FastSun 8 CSG	Altus Power America Management, LLC	Courtland, MN	2 GWh	Nov 2019	Dec 2025	Solar
FastSun 10 CSG	Altus Power America Management, LLC	Zumbrota, MN	2 GWh	Feb 2020	Dec 2025	Solar
FastSun 11 CSG	Altus Power America Management, LLC	Zumbrota, MN	2 GWh	Feb 2020	Dec 2025	Solar
FastSun 4 CSG	Altus Power America Management, LLC	Hugo, MN	2 GWh	May 2021	Dec 2025	Solar
East Chicago	Altus Power America Management, LLC	East Chicago, IN	3 GWh	Feb 2013	Nov 2025	Solar
Waterville CSG Solar Holdings LLC	Altus Power America Management, LLC	Waterville, MN	8 GWh	Feb 2018	May 2026	Solar
Dundas Solar Holdings LLC CSG	Altus Power America Management, LLC	Northfield, MN	8 GWh	Feb 2018	May 2026	Solar
Warsaw Solar CSG	Altus Power America Management, LLC	Morristown, MN	4 GWh	Jun 2020	Dec 2025	Solar
Northfield Solar CSG	Altus Power America Management, LLC	Northfield, MN	9 GWh	Jun 2020	Dec 2025	Solar
Walcott Solar CSG	Altus Power America Management, LLC	Faribault, MN	8 GWh	Jun 2020	Dec 2025	Solar
Corcoran CSG	Altus Power America Management, LLC	Corcoran, MN	8 GWh	Dec 2018	Dec 2025	Solar
Helen Solar CSG	Altus Power America Management, LLC	Plato, MN	8 GWh	Jun 2020	Dec 2025	Solar
Stromland Solar	Altus Power America Management, LLC	Cochrane, WI	5 GWh	Nov 2021	Dec 2025	Solar
Fountain	Altus Power America Management, LLC	Fountain, MN	6 GWh	Oct 2021	Dec 2025	Solar
Strobus	Altus Power America Management, LLC	Merrillan, WI	3 GWh	Aug 2021	Dec 2025	Solar

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#61	Alcoa Power Generating, Inc. - Yadkin Division	442.5 GWh	4
#26	Associated Electric Cooperative, Inc.	23.4 TWh	47
#13	Duke Energy Carolinas	112.6 TWh	577
#50	Duke Energy Progress West	4.5 TWh	15
#23	Louisville Gas and Electric Company and Kentucky Utilities Company	33.9 TWh	25
#1	PJM Interconnection, LLC	882.8 TWh	2,652
#6	Southern Company Services, Inc. - Trans	253.5 TWh	422
#5	Southwest Power Pool	306.8 TWh	856
#53	Southwestern Power Administration	4.1 TWh	34
#9	Tennessee Valley Authority	163.4 TWh	207

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#1	PJM Interconnection, LLC	882.8 TWh	2,652
#2	Midcontinent Independent System Operator, Inc.	669.4 TWh	3,038
#3	Electric Reliability Council of Texas, Inc.	494.1 TWh	1,471
#5	Southwest Power Pool	306.8 TWh	856
#6	Southern Company Services, Inc. - Trans	253.5 TWh	422
#7	California Independent System Operator	169.4 TWh	2,135
#9	Tennessee Valley Authority	163.4 TWh	207
#10	Florida Power & Light Co.	152.2 TWh	187
#12	New York Independent System Operator	134.3 TWh	1,299
#13	Duke Energy Carolinas	112.6 TWh	577