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 2025
Annual Generation	655.1 TWh
Power Plants	2,831
Utilities	1,296
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 \| 35.7% Coal \| 29% Wind \| 14.9% Nuclear \| 13.9% Solar \| 4.5% Water \| 1.5% Other Fuel \| 0.6%

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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
Lake Benton II	Northern States Power Co - Minnesota	Ruthton, MN	438 GWh	May 1999	Dec 2024	Wind
Red Wing	Northern States Power Co - Minnesota	Red Wing, MN	126 GWh	Sep 1949	Sep 2025	Non-biogenic Municipal Solid Waste : 52.4% Biogenic Municipal Solid Waste : 42.8% Wood/Wood Waste Solids : 4.0% Natural Gas : 0.8%
Community Wind North LLC	Northern States Power Co - Minnesota	Verdi Township, MN	115 GWh	Apr 2011	Dec 2024	Wind
Black Dog	Northern States Power Co - Minnesota	Burnsville, MN	2 TWh	Sep 1954	Dec 2024	Natural Gas
Grand Meadow	Northern States Power Co - Minnesota	Dexter, MN	380 GWh	Nov 2008	Dec 2024	Wind
Wheaton	Northern States Power Co - Minnesota	Eau Claire, WI	19 GWh	Dec 1972	Dec 2024	Natural Gas : 96.6% Distillate Fuel Oil : 3.4%
Hennepin Island	Northern States Power Co - Minnesota	Minneapolis, MN	47 GWh	Sep 1954	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%
St Croix Falls	Northern States Power Co - Minnesota	St Croix Falls, WI	105 GWh	Dec 1909	Dec 2024	Water
Riverside (MN)	Northern States Power Co - Minnesota	Minneapolis, MN	1 TWh	Mar 1987	Sep 2025	Natural Gas
Thornapple	Northern States Power Co - Minnesota	Bruce, WI	8 GWh	Dec 1926	Dec 2024	Water
French Island	Northern States Power Co - Minnesota	La Cross, WI	60 GWh	Dec 1939	Sep 2025	Wood/Wood Waste Solids : 47.5% Non-biogenic Municipal Solid Waste : 28.4% Biogenic Municipal Solid Waste : 23.3%
Cedar Falls (WI)	Northern States Power Co - Minnesota	Menomonie, WI	34 GWh	Dec 1909	Dec 2024	Water
Wilmarth	Northern States Power Co - Minnesota	Mankato, MN	100 GWh	Aug 1948	Sep 2025	Non-biogenic Municipal Solid Waste : 54.3% Biogenic Municipal Solid Waste : 44.4% Natural Gas : 1.3%
Sherburne County	Northern States Power Co - Minnesota	Becker, MN	7 TWh	Mar 1976	Sep 2025	Subbituminous Coal : 99.9%
White River (WI)	Northern States Power Co - Minnesota	Ashland, WI	4 GWh	Dec 1906	Dec 2024	Water
Mower County Wind Energy Center	Northern States Power Co - Minnesota	Grand Meadow, MN	343 GWh	Nov 2006	Dec 2024	Wind
Apple River	Northern States Power Co - Minnesota	Somerset, WI	13 GWh	Dec 1900	Dec 2024	Water
Dakota Range Wind	Northern States Power Co - Minnesota	Marvin, SD	896 GWh	Dec 2021	Sep 2025	Wind
Rock Aetna Power Partners	Northern States Power Co - Minnesota	Woodstock, MN	82 GWh	Nov 2022	Dec 2024	Wind
Sherco Solar II	Northern States Power Co - Minnesota	Becker, MN	19 GWh	-	Sep 2025	Solar
Northern Wind	Northern States Power Co - Minnesota	Lake Wilson, MN	369 GWh	Dec 2022	Sep 2025	Wind
Sherco Solar I	Northern States Power Co - Minnesota	Clear Lake, MN	393 GWh	Sep 2024	Sep 2025	Solar
Blazing Star 2 Wind Farm	Northern States Power Co - Minnesota	Hendricks, MN	834 GWh	Dec 2020	Sep 2025	Wind
Blazing Star Wind Farm 1	Northern States Power Co - Minnesota	Hendricks, MN	836 GWh	Mar 2020	Sep 2025	Wind
Crowned Ridge Wind II Energy Center	Northern States Power Co - Minnesota	Watertown, SD	860 GWh	Nov 2020	Sep 2025	Wind
Border Winds Wind Farm	Northern States Power Co - Minnesota	Rolla, ND	614 GWh	Jul 2015	Dec 2024	Wind
Freeborn Wind Farm	Northern States Power Co - Minnesota	Glenville, MN	720 GWh	Apr 2021	Sep 2025	Wind
Courtenay Wind Farm	Northern States Power Co - Minnesota	Courtenay, ND	585 GWh	Nov 2016	Sep 2025	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	5 TWh	Jun 2003	Sep 2025	Natural Gas
Plum Point Energy Station	NRG Energy Services - Plum Point	Osceola, AR	4 TWh	Aug 2010	Sep 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	5 TWh	Jun 2002	Sep 2025	Natural Gas : 98.8% Other Gas : 1.2%
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	381 GWh	Dec 2016	Sep 2025	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	110 GWh	Nov 2017	Sep 2025	Solar
Indy Solar I, LLC	Onward Energy	Indianapolis, IN	16 GWh	Nov 2013	Sep 2025	Solar
Indy Solar III, LLC	Onward Energy	Indianapolis, IN	13 GWh	Nov 2013	Sep 2025	Solar
Indy Solar II, LLC	Onward Energy	Indianapolis, IN	16 GWh	Nov 2013	Sep 2025	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
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	43 GWh	Jul 2010	Sep 2025	Waste Heat
Osceola Windpower II	Osceola Windpower II	Harris, IA	197 GWh	Aug 2008	Sep 2025	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	43 GWh	Feb 2004	Sep 2025	Natural Gas
Astoria Station	Otter Tail Power Co	Astoria, SD	459 GWh	Mar 2021	Sep 2025	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
Merricourt Wind Energy Center	Otter Tail Power Co	Kulm, ND	603 GWh	Nov 2020	Sep 2025	Wind
Coyote	Otter Tail Power Co	Beulah, ND	2 TWh	Apr 1981	Sep 2025	Lignite Coal : 99.7%
Big Stone	Otter Tail Power Co	Big Stone City, SD	2 TWh	Apr 1975	Sep 2025	Subbituminous Coal : 99.8%
Langdon Wind Energy Center	Otter Tail Power Co	Langdon, ND	95 GWh	Nov 2007	Dec 2024	Wind
Ashtabula Wind Energy Center	Otter Tail Power Co	Luverne, ND	116 GWh	Sep 2008	Dec 2024	Wind
Luverne Wind Energy Center	Otter Tail Power Co	Luverne, ND	110 GWh	Aug 2009	Dec 2024	Wind
Solway CT	Otter Tail Power Co	Solway, MN	125 GWh	Apr 2003	Dec 2024	Natural Gas
Hoot Lake	Otter Tail Power Co	Fergus Falls, MN	3 GWh	Aug 1914	Dec 2024	Water
Jamestown	Otter Tail Power Co	Jamestown, ND	194 MWh	Apr 1976	Dec 2024	Distillate Fuel Oil
Hoot Lake Solar	Otter Tail Power Co	Fergus Falls, MN	73 GWh	Jul 2023	Sep 2025	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	91 GWh	Dec 1949	Sep 2025	Natural Gas
Pearl River Solar Park LLC	Pearl River Solar Park, LLC	Morton, MS	427 GWh	Jun 2024	Sep 2025	Solar
Pegasus Community Solar	Pegasus Community Solar	Brooten, MN	3 GWh	Jul 2017	Dec 2024	Solar
Pegasus Wind	Pegasus Wind, LLC	Reese, MI	392 GWh	Nov 2019	Sep 2025	Wind
Pepin Garden	Pepin Garden LLC	Kellogg, MN	2 GWh	Oct 2023	Dec 2024	Solar
Pheasant Run Wind LLC	Pheasant Run Wind LLC	Pigeon, MI	257 GWh	Nov 2013	Sep 2025	Wind
Phoenix Solar South Farms LLC Solar Farm	Phoenix Solar South Farms LLC	Champaign, IL	7 GWh	Nov 2015	Sep 2025	Solar
Pierre Solar	Pierre Solar	Pierre, SD	2 GWh	Aug 2016	Dec 2024	Solar
Pine Bluff Energy Center	Pine Bluff Energy LLC	Pine Bluff, AR	827 GWh	Jul 2001	Sep 2025	Natural Gas
Pine Island Solar CSG	Pine Island Holdco, LLC	Pine Island, MN	6 GWh	Jan 2017	Dec 2024	Solar
Pioneer Prairie Wind Farm	Pioneer Prairie Wind Farm I, LLC	McIntire, IA	865 GWh	Sep 2008	Sep 2025	Wind
Putnam Solar 1B	Pivot Energy	Granville, IL	2 GWh	May 2024	Dec 2024	Solar
Kankakee Solar 3	Pivot Energy	Manteno, IL	107 MWh	Oct 2024	Dec 2024	Solar
St. Clair Solar 3	Pivot Energy	Washington Park, IL	158 MWh	May 2024	Dec 2024	Solar
Pivot Energy Minnesota Solar 1	Pivot Energy	Clinton Falls, MN	1 GWh	May 2023	Dec 2024	Solar

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#61	Alcoa Power Generating, Inc. - Yadkin Division	696.7 GWh	4
#27	Associated Electric Cooperative, Inc.	23.6 TWh	47
#13	Duke Energy Carolinas	112.5 TWh	565
#52	Duke Energy Progress West	4.3 TWh	10
#24	Louisville Gas and Electric Company and Kentucky Utilities Company	34.4 TWh	25
#1	PJM Interconnection, LLC	870.7 TWh	2,465
#6	Southern Company Services, Inc. - Trans	250.9 TWh	417
#5	Southwest Power Pool	299.9 TWh	835
#49	Southwestern Power Administration	5.2 TWh	34
#9	Tennessee Valley Authority	161.6 TWh	204

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#1	PJM Interconnection, LLC	870.7 TWh	2,465
#2	Midcontinent Independent System Operator, Inc.	655.1 TWh	2,831
#4	Electric Reliability Council of Texas, Inc.	485.0 TWh	1,313
#5	Southwest Power Pool	299.9 TWh	835
#6	Southern Company Services, Inc. - Trans	250.9 TWh	417
#7	California Independent System Operator	188.0 TWh	2,075
#9	Tennessee Valley Authority	161.6 TWh	204
#10	Florida Power & Light Co.	148.9 TWh	187
#12	New York Independent System Operator	131.6 TWh	1,211
#13	Duke Energy Carolinas	112.5 TWh	565