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	Apr 2026
Annual Generation	664.4 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 \| 36.9% Coal \| 27.6% Wind \| 14.8% Nuclear \| 13.6% Solar \| 5% Water \| 1.4% 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
Apple River	Northern States Power Co - Minnesota	Somerset, WI	13 GWh	Dec 1900	Dec 2024	Water
High Bridge	Northern States Power Co - Minnesota	St. Paul, MN	3 TWh	Apr 2008	Feb 2026	Natural Gas
Black Dog	Northern States Power Co - Minnesota	Burnsville, MN	2 TWh	Sep 1954	Dec 2024	Natural Gas
Jim Falls	Northern States Power Co - Minnesota	Jim Falls, WI	122 GWh	Jun 1988	Dec 2024	Water
Riverside (MN)	Northern States Power Co - Minnesota	Minneapolis, MN	50 GWh	Mar 1987	Feb 2026	Natural Gas
Menomonie	Northern States Power Co - Minnesota	Menomonie, WI	24 GWh	Dec 1957	Dec 2024	Water
St Croix Falls	Northern States Power Co - Minnesota	St Croix Falls, WI	105 GWh	Dec 1909	Dec 2024	Water
Wilmarth	Northern States Power Co - Minnesota	Mankato, MN	98 GWh	Aug 1948	Feb 2026	Non-biogenic Municipal Solid Waste : 54.0% Biogenic Municipal Solid Waste : 44.2% Natural Gas : 1.9%
Jeffers Wind 20 LLC	Northern States Power Co - Minnesota	Jeffers, MN	195 GWh	Sep 2008	Dec 2024	Wind
Sherburne County	Northern States Power Co - Minnesota	Becker, MN	7 TWh	Mar 1976	Feb 2026	Subbituminous Coal : 99.8%
Wissota	Northern States Power Co - Minnesota	Chippewa Falls, WI	136 GWh	Dec 1916	Dec 2024	Water
Wheaton	Northern States Power Co - Minnesota	Eau Claire, WI	19 GWh	Dec 1972	Dec 2024	Natural Gas : 96.6% Distillate Fuel Oil : 3.4%
Trego	Northern States Power Co - Minnesota	Hayward, WI	7 GWh	Dec 1926	Dec 2024	Water
Cornell	Northern States Power Co - Minnesota	Chippewa Falls, WI	82 GWh	Jun 1976	Dec 2024	Water
Chippewa Falls	Northern States Power Co - Minnesota	Chippewa Falls, WI	63 GWh	Dec 1927	Dec 2024	Water
Bay Front	Northern States Power Co - Minnesota	Ashland, WI	160 GWh	Dec 1948	Dec 2024	Wood/Wood Waste Solids : 95.3% Tire-derived Fuels : 4.1% Natural Gas : 0.6%
Mower County Wind Energy Center	Northern States Power Co - Minnesota	Grand Meadow, MN	343 GWh	Nov 2006	Dec 2024	Wind
Big Falls	Northern States Power Co - Minnesota	Glen Fora, WI	36 GWh	Dec 1921	Dec 2024	Water
Ladysmith Dam	Northern States Power Co - Minnesota	Ladysmith, WI	11 GWh	Dec 1939	Dec 2024	Water
Blue Lake	Northern States Power Co - Minnesota	Shakopee, MN	318 GWh	Feb 1974	Dec 2024	Natural Gas : 99.3% Distillate Fuel Oil : 0.7%
Thornapple	Northern States Power Co - Minnesota	Bruce, WI	8 GWh	Dec 1926	Dec 2024	Water
Dells	Northern States Power Co - Minnesota	Eau Claire, WI	42 GWh	Dec 1922	Dec 2024	Water
Nobles Wind Project	Northern States Power Co - Minnesota	Reading, MN	801 GWh	Nov 2010	Feb 2026	Wind
White River (WI)	Northern States Power Co - Minnesota	Ashland, WI	4 GWh	Dec 1906	Dec 2024	Water
Grand Meadow	Northern States Power Co - Minnesota	Dexter, MN	380 GWh	Nov 2008	Dec 2024	Wind
Saxon Falls	Northern States Power Co - Minnesota	Saxon, WI	8 GWh	Dec 1912	Dec 2024	Water
Angus Anson	Northern States Power Co - Minnesota	Sioux Falls, SD	237 GWh	Jul 1994	Dec 2024	Natural Gas : 99.2% Distillate Fuel Oil : 0.8%
Superior Falls	Northern States Power Co - Minnesota	Ironwood, MI	7 GWh	Dec 1916	Dec 2024	Water
Cedar Falls (WI)	Northern States Power Co - Minnesota	Menomonie, WI	34 GWh	Dec 1909	Dec 2024	Water
Northern Wind	Northern States Power Co - Minnesota	Lake Wilson, MN	348 GWh	Dec 2022	Feb 2026	Wind
Sherco Solar I	Northern States Power Co - Minnesota	Clear Lake, MN	406 GWh	Sep 2024	Feb 2026	Solar
Rock Aetna Power Partners	Northern States Power Co - Minnesota	Woodstock, MN	82 GWh	Nov 2022	Dec 2024	Wind
Dakota Range Wind	Northern States Power Co - Minnesota	Marvin, SD	989 GWh	Dec 2021	Feb 2026	Wind
Freeborn Wind Farm	Northern States Power Co - Minnesota	Glenville, MN	762 GWh	Apr 2021	Feb 2026	Wind
Sherco Solar II	Northern States Power Co - Minnesota	Becker, MN	104 GWh	-	Feb 2026	Solar
Border Winds Wind Farm	Northern States Power Co - Minnesota	Rolla, ND	614 GWh	Jul 2015	Dec 2024	Wind
Community Wind North LLC	Northern States Power Co - Minnesota	Verdi Township, MN	115 GWh	Apr 2011	Dec 2024	Wind
Courtenay Wind Farm	Northern States Power Co - Minnesota	Courtenay, ND	292 GWh	Nov 2016	Feb 2026	Wind
Blazing Star 2 Wind Farm	Northern States Power Co - Minnesota	Hendricks, MN	843 GWh	Dec 2020	Feb 2026	Wind
Blazing Star Wind Farm 1	Northern States Power Co - Minnesota	Hendricks, MN	847 GWh	Mar 2020	Feb 2026	Wind
Crowned Ridge Wind II Energy Center	Northern States Power Co - Minnesota	Watertown, SD	848 GWh	Nov 2020	Feb 2026	Wind
Pleasant Valley Wind Farm	Northern States Power Co - Minnesota	Dexter, MN	770 GWh	Jul 2015	Dec 2024	Wind
Northfield Community Solar	Northfield Community Solar	Northfield, MN	8 GWh	Nov 2016	Dec 2024	Solar
Northfield Holdco CSG	Northfield Holdco LLC	Northfield, MN	8 GWh	Nov 2017	Dec 2024	Solar
Indiana Harbor E 5 AC Station	Northlake Energy	East Chicago, IN	655 GWh	Apr 1996	Dec 2024	Blast Furnace Gas : 92.6% Natural Gas : 7.4%
Grayling Generating Station	NorthStar Clean Energy	Grayling, MI	165 GWh	Apr 1992	Dec 2024	Wood/Wood Waste Solids : 99.8%
Genesee Power Station LP	NorthStar Clean Energy	Flint, MI	96 GWh	Nov 1995	Dec 2024	Wood/Wood Waste Solids : 99.9%
Novel Froehle Solar LLC	Novel Froehle Solar HQ LLC	Cold Spring, MN	15 MWh	Nov 2024	Dec 2024	Solar
Novel Milbradt Solar LLC	Novel Milbradt Solar HQ LLC	Belview, MN	16 MWh	Nov 2024	Dec 2024	Solar
Cottonwood Energy Company LP	NRG Cottonwood Tenant LLC	Deweyville, TX	4 TWh	Jun 2003	Feb 2026	Natural Gas
Plum Point Energy Station	NRG Energy Services - Plum Point	Osceola, AR	4 TWh	Aug 2010	Nov 2025	Subbituminous Coal : 99.9%
Novel OYA of Osakis CSG	NRG MN Community LLC	Osakis, MN	9 GWh	Jun 2018	Dec 2024	Solar
Novel - OYA of Mapleton CSG	NRG MN Community LLC	Mapleton, MN	6 GWh	Jun 2018	Dec 2024	Solar
Shakopee Met Council WTP	Oak Leaf Solar V LLC	Shakopee, MN	2 GWh	Feb 2016	Dec 2024	Solar
Taft Cogeneration Facility	Occidental Chemical Corporation	Hahnville, LA	6 TWh	Jun 2002	Feb 2026	Natural Gas : 98.3% Other Gas : 1.7%
Stiles	Oconto Electric Cooperative	Oconto Falls, WI	6 GWh	Feb 1949	Dec 2024	Water
OE IL Solar 3	OE IL Solar 3, LLC	Oregon, IL	5 GWh	Feb 2022	Dec 2024	Solar
Old Gold Energy Center, LLC	Old Gold Energy Center, LLC	Joice, IA	78 GWh	Sep 2001	Dec 2024	Wind
Olinda Trail Solar	Olinda Trail Solar LLC	Lindstrom, MN	2 GWh	Aug 2019	Dec 2024	Solar
Oliver Wind III, LLC	Oliver Wind III, LLC	Mandan, ND	363 GWh	Dec 2016	Feb 2026	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%
Olney Solar II CSG	Olney Solar II, LLC	Olney, IL	4 GWh	May 2021	Dec 2024	Solar
Sumrall II Solar Farm	Onward Energy	Sumrall, MS	111 GWh	Nov 2017	Feb 2026	Solar
Indy Solar III, LLC	Onward Energy	Indianapolis, IN	13 GWh	Nov 2013	Feb 2026	Solar
Indy Solar II, LLC	Onward Energy	Indianapolis, IN	15 GWh	Nov 2013	Feb 2026	Solar
Indy Solar I, LLC	Onward Energy	Indianapolis, IN	15 GWh	Nov 2013	Feb 2026	Solar
Optimum Wind 3 LLC	Optimum Wind 3 LLC	Nevada, IA	10 GWh	Feb 2017	Dec 2024	Wind
Optimum Wind 4 LLC	Optimum Wind 4 LLC	Nevada, IA	10 GWh	Feb 2017	Dec 2024	Wind
Optimum Wind 5 LLC	Optimum Wind 5 LLC	Nevada, IA	9 GWh	Feb 2017	Dec 2024	Wind
Optimum Wind 6 LLC	Optimum Wind 6 LLC	Nevada, IA	9 GWh	Feb 2017	Dec 2024	Wind
Optimum Wind 7 LLC	Optimum Wind 7 LLC	Nevada, IA	11 GWh	Feb 2017	Dec 2024	Wind
Wheatland	Origis Energy USA, Inc	Wheatland, IN	19 GWh	-	Feb 2026	Solar
Orion Community Solar	Orion Community Solar	St. Joseph, MN	5 GWh	Dec 2016	Dec 2024	Solar
Benton County Wind Farm	Orion Energy Group LLC	Earl Park, IN	358 GWh	Apr 2008	Dec 2024	Wind
Ivanhoe Generation Facility	Orion Engineered Carbons	Franklin, LA	53 GWh	Mar 2023	Dec 2024	Waste Heat
OREG 3 Inc	Ormat Nevada Inc	Trimont, MN	44 GWh	Jul 2010	Feb 2026	Waste Heat
Osceola Windpower II	Osceola Windpower II	Harris, IA	193 GWh	Aug 2008	Feb 2026	Wind
Otsego Mill Power Plant	Otsego Paper Inc	Otsego, MI	165 GWh	Oct 1995	Dec 2024	Natural Gas
Otter Creek Ethanol Poet - Ashton	Otter Creek Ethanol LLC - Poet Ashton	Ashton, IA	45 GWh	Feb 2004	Feb 2026	Natural Gas
Astoria Station	Otter Tail Power Co	Astoria, SD	478 GWh	Mar 2021	Feb 2026	Natural Gas
Ashtabula Wind III LLC	Otter Tail Power Co	Luverne, ND	143 GWh	Nov 2010	Dec 2024	Wind
Lake Preston	Otter Tail Power Co	Lake Preston, SD	86 MWh	May 1978	Dec 2024	Distillate Fuel Oil
Coyote	Otter Tail Power Co	Beulah, ND	2 TWh	Apr 1981	Feb 2026	Lignite Coal : 99.8%
Jamestown	Otter Tail Power Co	Jamestown, ND	194 MWh	Apr 1976	Dec 2024	Distillate Fuel Oil
Hoot Lake	Otter Tail Power Co	Fergus Falls, MN	3 GWh	Aug 1914	Dec 2024	Water
Merricourt Wind Energy Center	Otter Tail Power Co	Kulm, ND	555 GWh	Nov 2020	Feb 2026	Wind
Luverne Wind Energy Center	Otter Tail Power Co	Luverne, ND	110 GWh	Aug 2009	Dec 2024	Wind
Ashtabula Wind Energy Center	Otter Tail Power Co	Luverne, ND	116 GWh	Sep 2008	Dec 2024	Wind
Langdon Wind Energy Center	Otter Tail Power Co	Langdon, ND	95 GWh	Nov 2007	Dec 2024	Wind
Solway CT	Otter Tail Power Co	Solway, MN	125 GWh	Apr 2003	Dec 2024	Natural Gas
Big Stone	Otter Tail Power Co	Big Stone City, SD	2 TWh	Apr 1975	Feb 2026	Subbituminous Coal : 99.8%
Hoot Lake Solar	Otter Tail Power Co	Fergus Falls, MN	75 GWh	Jul 2023	Feb 2026	Solar
Ottumwa City of	Ottumwa City of	Ottumwa, IA	5 GWh	Jul 1931	Apr 2024	Water
DeRidder Mill	Packaging Corporation of America	DeRidder, LA	402 GWh	Sep 1969	Dec 2024	Black Liquor : 46.7% Wood/Wood Waste Solids : 34.3% Natural Gas : 18.9%
Palmer Community Solar LLC CSG	Palmer Community Solar LLC	North Branch, MN	2 GWh	Jul 2021	Dec 2024	Solar
Paulson Community (CSG)	Paulson Community Solar LLC	St. Peter, MN	2 GWh	Mar 2020	Dec 2024	Solar
Paynesville Community Solar	Paynesville Community Solar	Paynesville, MN	8 GWh	Nov 2016	Dec 2024	Solar
Packaging of America Tomahawk Mill	PCA-Tomahawk Mill	Tomahawk, WI	111 GWh	Dec 1919	Dec 2024	Wood/Wood Waste Solids : 35.7% Natural Gas : 34.2% Black Liquor : 18.1% Water : 11.7%
PCA, Filer City Mill	PCA, Filer City Mill	Filer City, MI	89 GWh	Dec 1949	Feb 2026	Natural Gas
Pearl River Solar Park LLC	Pearl River Solar Park, LLC	Morton, MS	420 GWh	Jun 2024	Feb 2026	Solar

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#60	Alcoa Power Generating, Inc. - Yadkin Division	582.3 GWh	4
#27	Associated Electric Cooperative, Inc.	23.9 TWh	47
#13	Duke Energy Carolinas	112.5 TWh	565
#52	Duke Energy Progress West	4.4 TWh	10
#23	Louisville Gas and Electric Company and Kentucky Utilities Company	34.0 TWh	25
#1	PJM Interconnection, LLC	881.5 TWh	2,465
#6	Southern Company Services, Inc. - Trans	250.9 TWh	417
#5	Southwest Power Pool	302.9 TWh	835
#51	Southwestern Power Administration	4.6 TWh	34
#9	Tennessee Valley Authority	163.1 TWh	204

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#1	PJM Interconnection, LLC	881.5 TWh	2,465
#2	Midcontinent Independent System Operator, Inc.	664.4 TWh	2,831
#3	Electric Reliability Council of Texas, Inc.	488.2 TWh	1,313
#5	Southwest Power Pool	302.9 TWh	835
#6	Southern Company Services, Inc. - Trans	250.9 TWh	417
#7	California Independent System Operator	176.8 TWh	2,075
#9	Tennessee Valley Authority	163.1 TWh	204
#10	Florida Power & Light Co.	150.9 TWh	187
#12	New York Independent System Operator	134.4 TWh	1,211
#13	Duke Energy Carolinas	112.5 TWh	565