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%

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

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Plant Name	Utility	Location	Annual Generation	Plant Date	Last Update	Fuel Types
Northfield Holdco CSG	Northfield Holdco LLC	Northfield, MN	8 GWh	Nov 2017	Dec 2025	Solar
Northfield Community Solar	Northfield Community Solar	Northfield, MN	8 GWh	Nov 2016	Dec 2025	Solar
Blazing Star Wind Farm 1	Northern States Power Co - Minnesota	Hendricks, MN	841 GWh	Mar 2020	May 2026	Wind
Freeborn Wind Farm	Northern States Power Co - Minnesota	Glenville, MN	772 GWh	Apr 2021	May 2026	Wind
Blazing Star 2 Wind Farm	Northern States Power Co - Minnesota	Hendricks, MN	838 GWh	Dec 2020	May 2026	Wind
Border Winds Wind Farm	Northern States Power Co - Minnesota	Rolla, ND	513 GWh	Jul 2015	Sep 2025	Wind
Courtenay Wind Farm	Northern States Power Co - Minnesota	Courtenay, ND	128 GWh	Nov 2016	May 2026	Wind
Pleasant Valley Wind Farm	Northern States Power Co - Minnesota	Dexter, MN	464 GWh	Jul 2015	Dec 2025	Wind
Crowned Ridge Wind II Energy Center	Northern States Power Co - Minnesota	Watertown, SD	847 GWh	Nov 2020	May 2026	Wind
Northern Wind	Northern States Power Co - Minnesota	Lake Wilson, MN	343 GWh	Dec 2022	May 2026	Wind
Rock Aetna Power Partners	Northern States Power Co - Minnesota	Woodstock, MN	84 GWh	Nov 2022	Dec 2025	Wind
Sherco Solar I	Northern States Power Co - Minnesota	Clear Lake, MN	421 GWh	Sep 2024	May 2026	Solar
Sherco Solar II	Northern States Power Co - Minnesota	Becker, MN	247 GWh	Aug 2025	May 2026	Solar
Dakota Range Wind	Northern States Power Co - Minnesota	Marvin, SD	984 GWh	Dec 2021	May 2026	Wind
Wheaton	Northern States Power Co - Minnesota	Eau Claire, WI	17 GWh	Dec 1972	May 2025	Natural Gas : 97.4% Distillate Fuel Oil : 2.6%
High Bridge	Northern States Power Co - Minnesota	St. Paul, MN	3 TWh	Apr 2008	May 2026	Natural Gas
Jeffers Wind 20 LLC	Northern States Power Co - Minnesota	Jeffers, MN	196 GWh	Sep 2008	Dec 2025	Wind
Cornell	Northern States Power Co - Minnesota	Chippewa Falls, WI	70 GWh	Jun 1976	Dec 2025	Water
Sherburne County	Northern States Power Co - Minnesota	Becker, MN	6 TWh	Mar 1976	May 2026	Subbituminous Coal : 99.8%
Bay Front	Northern States Power Co - Minnesota	Ashland, WI	177 GWh	Dec 1948	Dec 2025	Wood/Wood Waste Solids : 95.1% Tire-derived Fuels : 4.2% Natural Gas : 0.7%
Big Falls	Northern States Power Co - Minnesota	Glen Fora, WI	27 GWh	Dec 1921	Dec 2025	Water
Apple River	Northern States Power Co - Minnesota	Somerset, WI	13 GWh	Dec 1900	Dec 2025	Water
Wissota	Northern States Power Co - Minnesota	Chippewa Falls, WI	118 GWh	Dec 1916	Dec 2025	Water
Cedar Falls (WI)	Northern States Power Co - Minnesota	Menomonie, WI	31 GWh	Dec 1909	Dec 2025	Water
Trego	Northern States Power Co - Minnesota	Hayward, WI	5 GWh	Dec 1926	Dec 2025	Water
St Croix Falls	Northern States Power Co - Minnesota	St Croix Falls, WI	80 GWh	Dec 1909	Dec 2025	Water
Menomonie	Northern States Power Co - Minnesota	Menomonie, WI	23 GWh	Dec 1957	Dec 2025	Water
Jim Falls	Northern States Power Co - Minnesota	Jim Falls, WI	105 GWh	Jun 1988	Dec 2025	Water
Ladysmith Dam	Northern States Power Co - Minnesota	Ladysmith, WI	10 GWh	Dec 1939	Dec 2025	Water
Thornapple	Northern States Power Co - Minnesota	Bruce, WI	7 GWh	Dec 1926	Dec 2025	Water
Holcombe	Northern States Power Co - Minnesota	Holcombe, WI	81 GWh	Dec 1949	Dec 2025	Water
White River (WI)	Northern States Power Co - Minnesota	Ashland, WI	3 GWh	Dec 1906	Dec 2025	Water
French Island	Northern States Power Co - Minnesota	La Cross, WI	65 GWh	Dec 1939	May 2026	Wood/Wood Waste Solids : 43.5% Non-biogenic Municipal Solid Waste : 25.3% Biogenic Municipal Solid Waste : 20.7% Distillate Fuel Oil : 10.2%
Dells	Northern States Power Co - Minnesota	Eau Claire, WI	37 GWh	Dec 1922	Dec 2025	Water
Chippewa Falls	Northern States Power Co - Minnesota	Chippewa Falls, WI	56 GWh	Dec 1927	Dec 2025	Water
Hennepin Island	Northern States Power Co - Minnesota	Minneapolis, MN	54 GWh	Sep 1954	Dec 2025	Water
Allen S King	Northern States Power Co - Minnesota	Oak Park Heights, MN	723 GWh	Feb 1958	May 2026	Subbituminous Coal : 99.4%
Monticello Nuclear Facility	Northern States Power Co - Minnesota	Monticello, MN	5 TWh	May 1971	May 2026	Nuclear
Prairie Island	Northern States Power Co - Minnesota	Welch, MN	9 TWh	Jan 1974	May 2026	Nuclear
Red Wing	Northern States Power Co - Minnesota	Red Wing, MN	132 GWh	Sep 1949	May 2026	Non-biogenic Municipal Solid Waste : 53.4% Biogenic Municipal Solid Waste : 43.7% Wood/Wood Waste Solids : 2.3% Natural Gas : 0.6%
Grand Meadow	Northern States Power Co - Minnesota	Dexter, MN	379 GWh	Nov 2008	Dec 2025	Wind
Wilmarth	Northern States Power Co - Minnesota	Mankato, MN	97 GWh	Aug 1948	May 2026	Non-biogenic Municipal Solid Waste : 53.8% Biogenic Municipal Solid Waste : 44.0% Natural Gas : 2.1%
Superior Falls	Northern States Power Co - Minnesota	Ironwood, MI	8 GWh	Dec 1916	Dec 2025	Water
Saxon Falls	Northern States Power Co - Minnesota	Saxon, WI	9 GWh	Dec 1912	Dec 2025	Water
Inver Hills	Northern States Power Co - Minnesota	Inver Grove Heights, MN	130 GWh	Mar 1972	Dec 2025	Natural Gas : 98.8% Distillate Fuel Oil : 1.2%
Lake Benton II	Northern States Power Co - Minnesota	Ruthton, MN	440 GWh	May 1999	Dec 2025	Wind
Community Wind North LLC	Northern States Power Co - Minnesota	Verdi Township, MN	110 GWh	Apr 2011	Dec 2025	Wind
Nobles Wind Project	Northern States Power Co - Minnesota	Reading, MN	789 GWh	Nov 2010	May 2026	Wind
Blue Lake	Northern States Power Co - Minnesota	Shakopee, MN	435 GWh	Feb 1974	Dec 2025	Natural Gas
Black Dog	Northern States Power Co - Minnesota	Burnsville, MN	870 GWh	Sep 1954	Dec 2025	Natural Gas
Mower County Wind Energy Center	Northern States Power Co - Minnesota	Grand Meadow, MN	334 GWh	Nov 2006	Dec 2025	Wind
Angus Anson	Northern States Power Co - Minnesota	Sioux Falls, SD	239 GWh	Jul 1994	Dec 2025	Natural Gas : 99.9%
Northern Lights Wind LLC	Northern Lights Wind LLC (Longroad)	Pipestone, MN	2 GWh	Nov 2004	Dec 2025	Wind
Sugar Creek Power	Northern Indiana Pub Serv Co	West Terre Haute, IN	4 TWh	May 2002	May 2026	Natural Gas
Michigan City	Northern Indiana Pub Serv Co	Michigan City, IN	2 TWh	Apr 1974	May 2026	Subbituminous Coal : 78.0% Bituminous Coal : 20.3% Natural Gas : 1.7%
Norway (IN)	Northern Indiana Pub Serv Co	Monticello, IN	12 GWh	May 1923	Dec 2025	Water
R M Schahfer	Northern Indiana Pub Serv Co	Wheatfield, IN	1 TWh	Nov 1976	May 2026	Bituminous Coal : 94.1% Natural Gas : 5.9%
Oakdale	Northern Indiana Pub Serv Co	Monticello, IN	15 GWh	Oct 1925	Feb 2025	Water
North Star Solar Project	North Star Solar PV LLC	North Branch, MN	175 GWh	Nov 2016	May 2026	Solar
Lowe's - 1845 - Chicago Brickyard, IL	North Narragansett Avenue Solar Project 2022, LLC	Chicago, IL	1 GWh	Jan 2025	Dec 2025	Solar
North Branch (MN)	North Branch Water & Light Comm	North Branch, MN	249 MWh	Sep 2003	Dec 2025	Distillate Fuel Oil
Lennon Generating	North American Natural Res	Lennon, MI	26 GWh	Jan 2001	Dec 2025	Landfill Gas
Central Generating	North American Central - LLC	Pierson, MI	13 GWh	Aug 2018	Dec 2025	Landfill Gas
Nobles 2 Wind Project	Nobles 2 Power Partners, LLC	Wilmont, MN	952 GWh	Nov 2020	May 2026	Wind
Kokomo Solar 1, LLC	NJR Clean Energy Ventures Corporation	Kokomo, IN	7 GWh	Nov 2016	Dec 2025	Solar
Spartan PV 1, LLC	NJR Clean Energy Ventures Corporation	East Lansing, MI	12 GWh	Nov 2017	Dec 2024	Solar
Adrian Energy Associates LLC	NextEra Renewable Fuels, LLC	Adrian, MI	2 GWh	Nov 1994	Dec 2025	Landfill Gas
Sumpter Energy Associates	NextEra Renewable Fuels, LLC	Belleville, MI	52 GWh	Jun 1992	Dec 2025	Landfill Gas
Pine Tree Acres	NextEra Renewable Fuels, LLC	Lenox Twp, MI	58 GWh	May 1998	May 2026	Landfill Gas
Point Beach Nuclear Plant	NextEra Energy Point Beach LLC	Two Rivers, WI	10 TWh	May 1969	May 2026	Nuclear
Newport Solar Project	Newport Solar, LLC	Newport, AR	354 GWh	Sep 2023	May 2026	Solar
New Ulm	New Ulm Public Utilities Comm	New Ulm, MN	2 GWh	Dec 1956	Dec 2025	Natural Gas : 59.1% Distillate Fuel Oil : 40.9%
New Prague	New Prague Utilities Comm	New Prague, MN	1 GWh	Jul 1944	Dec 2025	Natural Gas : 76.4% Distillate Fuel Oil : 23.6%
New Munich Solar	New Munich Solar LLC	Melrose, MN	2 GWh	Aug 2019	Dec 2025	Solar
New Madrid Solar, LLC	New Madrid Solar, LLC	Marston, MO	230 GWh	Oct 2025	May 2026	Solar
NLMU Wind	New London Municipal Utilities - (IA)	New London, IA	5 GWh	Oct 2011	Dec 2025	Wind
New Germany Community Solar Garden	New Germany Solar I LLC	New Germany, MN	2 GWh	Mar 2018	Dec 2025	Solar
Biron Mill	ND Paper, Inc.	Wisconsin Rapids, WI	96 GWh	Aug 1947	Dec 2024	Natural Gas : 79.6% Subbituminous Coal : 20.4%
SolarClub 10 LLC	Nautilus Solar Solutions	Monticello, MN	2 GWh	Nov 2020	Dec 2025	Solar
SolarClub 30 (CSG)	Nautilus Solar Solutions	Eden Valley, MN	2 GWh	Dec 2023	Dec 2025	Solar
SolarClub 03	Nautilus Solar Solutions	Starbuck, MN	2 GWh	Aug 2023	Dec 2025	Solar
SolarClub 35 LLC	Nautilus Solar Solutions	Mankato, MN	2 GWh	Nov 2020	Dec 2025	Solar
SolarClub 15 LLC	Nautilus Solar Solutions	Clear Lake, MN	2 GWh	Nov 2020	Dec 2025	Solar
SolarClub 28 LLC	Nautilus Solar Solutions	Gaylord, MN	2 GWh	Nov 2020	Dec 2025	Solar
SolarClub 23 LLC	Nautilus Solar Solutions	La Crescent, MN	2 GWh	Nov 2020	Dec 2025	Solar
SolarClub 20 LLC	Nautilus Solar Solutions	Wabasha, MN	2 GWh	Nov 2020	Dec 2025	Solar
Brooten CSG1, LLC	Nautilus Solar Solutions	Brooten, MN	2 GWh	Jul 2021	Dec 2025	Solar
Plato CSG1, LLC	Nautilus Solar Solutions	Glencoe, MN	2 GWh	Dec 2020	Dec 2025	Solar
Paynesville CSG1, LLC	Nautilus Solar Solutions	Paynesville, MN	2 GWh	Dec 2020	Dec 2025	Solar
Buffalo Lake CSG1, LLC	Nautilus Solar Solutions	Buffalo Lake, MN	2 GWh	Jul 2021	Dec 2025	Solar
Nautilus Winsted Solar (CSG)	Nautilus Solar Solutions	Winsted, MN	5 GWh	Mar 2019	May 2026	Solar
Sacred Heart CSG1, LLC	Nautilus Solar Solutions	Sacred Heart, MN	2 GWh	Jul 2021	Dec 2025	Solar
Lowry CSG2, LLC	Nautilus Solar Solutions	Glenwood, MN	2 GWh	Nov 2020	Dec 2025	Solar
Nautilus Lindstrom Solar (CSG)	Nautilus Solar Solutions	Lindstrom, MN	3 GWh	Feb 2019	May 2026	Solar
Stewart CSG1, LLC	Nautilus Solar Solutions	Stewart, MN	2 GWh	Jul 2021	Dec 2025	Solar
Nautilus Saint Cloud Solar (CSG)	Nautilus Solar Solutions	Saint Cloud, MN	8 GWh	Mar 2019	May 2026	Solar
National Energy of McBain	National Salvage & Service Corporation	McBain, MI	122 GWh	Nov 1988	Dec 2024	Wood/Wood Waste Solids : 88.5% Tire-derived Fuels : 11.2%
NCAH Central Utility Plant	National Centers for Animal Health	Ames, IA	439 MWh	May 1996	May 2026	Natural Gas : 82.6% Distillate Fuel Oil : 17.4%
Holland Energy Facility	NAES Corporation - (WA)	Beecher City, IL	3 TWh	Aug 2002	May 2026	Natural Gas
Fayetteville Public Schools (SWEPCO)	Nabholz Solar FPS, LLC	Booneville, AR	9 GWh	Jul 2023	Dec 2024	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