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	Oct 2026
Annual Generation	677.7 TWh
Power Plants	3,095
Utilities	1,372
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 \| 37.1% Coal \| 26.2% Wind \| 15% Nuclear \| 13.8% Solar \| 6.1% Water \| 1.4% Other Fuel \| 0.5%

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
Solar Star Urbana Landfill East	Solar Star Urbana Landfill East, LLC	Urbana, IL	4 GWh	Sep 2021	Dec 2025	Solar
South Fork Wind Farm	South Fork Wind, LLC	Round Lake, MN	54 GWh	Nov 2016	Dec 2025	Wind
South Garden	South Garden LLC	Winstead, MN	2 GWh	Jun 2023	Dec 2025	Solar
Marion	Southern Illinois Power Coop	Marion, IL	796 GWh	May 1963	Jul 2026	Bituminous Coal : 86.3% Natural Gas : 13.1% Distillate Fuel Oil : 0.6%
SIUC	Southern Illinois University Carbondale	Carbondale, IL	9 GWh	May 1998	Jul 2026	Bituminous Coal
Veolia ES Blackfoot Landfill Facility	Southern Indiana Gas & Elec Co	Winslow, IN	4 GWh	May 2009	Dec 2025	Landfill Gas
Troy Solar	Southern Indiana Gas & Elec Co	Troy, IN	94 GWh	Mar 2021	Jul 2026	Solar
Volkman Road Solar Array Hybrid	Southern Indiana Gas & Elec Co	Evansville, IN	3 GWh	Oct 2018	Dec 2025	Solar
Oak Hill Solar Array	Southern Indiana Gas & Elec Co	Evansville, IN	3 GWh	Oct 2018	Dec 2025	Solar
Posey Solar	Southern Indiana Gas & Elec Co	Mount Vernon, IN	405 GWh	Apr 2025	Jul 2026	Solar
A B Brown	Southern Indiana Gas & Elec Co	Mount Vernon, IN	753 GWh	Feb 1979	Jul 2026	Natural Gas
F B Culley	Southern Indiana Gas & Elec Co	Newburgh, IN	1 TWh	Nov 1966	Jul 2026	Bituminous Coal : 98.3% Natural Gas : 1.7%
Southern Minnesota Beet Sugar	Southern Minnesota Beet Sugar	Renville, MN	28 GWh	Aug 1976	May 2026	Subbituminous Coal : 70.1% Natural Gas : 29.2% Residual Fuel Oil : 0.6%
Redwood Falls Wind	Southern Minnesota Mun P Agny	Redwood Falls, MN	9 GWh	Nov 2004	Dec 2025	Wind
Fairmont Wind	Southern Minnesota Mun P Agny	Fairmont, MN	13 GWh	Feb 2003	Dec 2025	Wind
Fairmont (MN)	Southern Minnesota Mun P Agny	Fairmont, MN	8 GWh	Dec 1974	Dec 2025	Natural Gas : 98.8% Distillate Fuel Oil : 1.2%
Owatonna Energy Station	Southern Minnesota Mun P Agny	Owatonna, MN	2 GWh	Feb 2018	Dec 2025	Natural Gas
SMMPA Methane Energy Facility	Southern Minnesota Mun P Agny	Mora, MN	3 GWh	Mar 2012	Dec 2025	Landfill Gas
Deuel Harvest Wind Energy LLC	Southern Power Co	Clear Lake, SD	1 TWh	Jan 2021	Jul 2026	Wind
Speedway Solar, LLC	Speedway Solar, LLC	Morrison Town, IN	388 GWh	May 2025	Jul 2026	Solar
Hurricane Creek CSG	SPG IL Hurricane Creek Solar LLC	Carterville, IL	4 GWh	May 2021	Dec 2025	Solar
Spica Community Solar	Spica Community Solar	Lake Lillian, MN	3 GWh	Jul 2017	Dec 2025	Solar
Spring Valley	Spring Valley Pub Utils Comm	Spring Valley, MN	227 MWh	Dec 1951	Dec 2025	Distillate Fuel Oil : 82.2% Natural Gas : 17.8%
Springfield (MN)	Springfield Public Utils Comm - (MN)	Springfield, MN	15 MWh	May 1994	Dec 2025	Distillate Fuel Oil
IGS Stockton DG CSG	SRC Partnership 3, LLC	Stockton, IL	4 GWh	Oct 2020	Dec 2025	Solar
Carroll Area Wind Farm	SRIV Partnership LLC	Templeton, IA	54 GWh	Dec 2014	Dec 2025	Wind
Saint Marys Hospital Power Plant	St Mary's Hospital	Rochester, MN	56 GWh	Dec 1970	Jul 2026	Natural Gas : 99.0% Distillate Fuel Oil : 1.0%
St Paul Cogeneration	St Paul Cogeneration LLC	St. Paul, MN	75 GWh	Mar 2003	Dec 2025	Wood/Wood Waste Solids : 82.4% Natural Gas : 17.6%
St. Cloud Hydro	St. Cloud Hydroelectric Generation Facility	St Cloud, MN	46 GWh	May 1988	Dec 2025	Water
St. James Solar (LA)	St. James Solar, LLC	Vacherie, LA	50 GWh	Jan 2023	Dec 2025	Solar
St. Olaf StandBy Generators	St. Olaf College	Northfield, MN	116 MWh	May 1999	Dec 2025	Distillate Fuel Oil
St. Olaf Wind Turbine	St. Olaf College	Northfield, MN	2 GWh	Aug 2006	Dec 2025	Wind
STAG St. Paul Project CSG	STAG St. Paul Community Solar LLC	Saint Paul, MN	1 GWh	Dec 2019	Dec 2025	Solar
Stahl Wind Energy	Stahl Wind Energy, LLC (Longroad)	Pipestone, MN	2 GWh	Nov 2004	Dec 2025	Wind
USS Sunrise Solar LLC CSG	Standard Solar	Taylors Falls, MN	1 GWh	May 2020	Dec 2025	Solar
USS Solar Way LLC CSG	Standard Solar	Hartland, MN	2 GWh	Oct 2020	Dec 2025	Solar
Krause CSG	Standard Solar	Renville, MN	2 GWh	Apr 2018	Dec 2025	Solar
USS Centerfield Solar CSG	Standard Solar	Webster, MN	2 GWh	Oct 2019	Dec 2025	Solar
USS Webster Solar CSG	Standard Solar	Webster, MN	2 GWh	Apr 2019	Dec 2025	Solar
USS White Cloud LLC CSG	Standard Solar	St. Cloud, MN	2 GWh	Oct 2019	Dec 2025	Solar
USS Turkey Solar LLC CSG	Standard Solar	Atwater, MN	2 GWh	Dec 2019	Dec 2025	Solar
USS Steamboat Solar LLC CSG	Standard Solar	Morgan, MN	2 GWh	Mar 2021	Dec 2025	Solar
USS B&B Solar LLC CSG	Standard Solar	Morgan, MN	2 GWh	Aug 2020	Dec 2025	Solar
USS Dot Com Solar LLC CSG	Standard Solar	Morgan, MN	2 GWh	Feb 2021	Dec 2025	Solar
USS Lake Patterson Solar CSG	Standard Solar	Cologne, MN	2 GWh	Jul 2019	Dec 2025	Solar
USS Kass Solar LLC	Standard Solar	Garvin, MN	2 GWh	Dec 2020	Dec 2025	Solar
USS KVPV Solar LLC CSG	Standard Solar	Fulton, MN	2 GWh	Sep 2020	Dec 2025	Solar
USS Haven Solar LLC CSG	Standard Solar	St. Cloud, MN	2 GWh	Oct 2019	Dec 2025	Solar
USS Solar Sources LLC CSG	Standard Solar	Scandia, MN	2 GWh	Sep 2020	Dec 2025	Solar
USS Kost Trail Solar CSG	Standard Solar	North Branch, MN	2 GWh	May 2019	Dec 2025	Solar
USS All In Solar LLC CSG	Standard Solar	Hartland, MN	2 GWh	Sep 2020	Dec 2025	Solar
USS Flower Solar LLC CSG	Standard Solar	Nicollet, MN	2 GWh	Aug 2020	Dec 2025	Solar
USS Cougar Solar LLC CSG	Standard Solar	Morgan, MN	2 GWh	Aug 2020	Dec 2025	Solar
USS Verde Solar LLC CSG	Standard Solar	Morgan, MN	2 GWh	Sep 2020	Dec 2025	Solar
USS JJ Clay Solar LLC CSG	Standard Solar	Felton, MN	2 GWh	Sep 2020	Dec 2025	Solar
USS Horne South Solar LLC CSG	Standard Solar	Felton, MN	2 GWh	Sep 2020	Dec 2025	Solar
USS Horne North Solar LLC CSG	Standard Solar	Felton, MN	2 GWh	Sep 2020	Dec 2025	Solar
USS Buckaroo Solar LLC CSG	Standard Solar	Glydon, MN	2 GWh	Sep 2020	Dec 2025	Solar
USS Christoffer Solar LLC CSG	Standard Solar	Montevideo, MN	2 GWh	Aug 2020	Dec 2025	Solar
USS Mayhew Solar LLC CSG	Standard Solar	Sauk Rapids, MN	2 GWh	May 2020	Dec 2025	Solar
Wright Kirby 1-5 CSG	Standard Solar	Monticello, MN	12 GWh	May 2019	Dec 2025	Solar
USS Solar Brick	Standard Solar	Standard City, IL	5 GWh	May 2021	Dec 2025	Solar
USS King 2 CSG	Standard Solar	Waconia, MN	2 GWh	Jul 2019	Dec 2025	Solar
USS Cheyenne Solar LLC CSG	Standard Solar	Chisago City, MN	2 GWh	Nov 2019	Dec 2025	Solar
USS Monarch Solar LLC CSG	Standard Solar	Brooten, MN	2 GWh	Nov 2019	Dec 2025	Solar
USS Eggo Solar CSG	Standard Solar	Cologne, MN	2 GWh	May 2019	Dec 2025	Solar
USS Midtown Solar LLC CSG	Standard Solar	Melrose, MN	2 GWh	Nov 2019	Dec 2025	Solar
USS Greenhouse Solar LLC CSG	Standard Solar	Pine Island, MN	927 MWh	Nov 2019	Dec 2025	Solar
USS DVL Solar CSG	Standard Solar	Waconia, MN	2 GWh	Jul 2019	Dec 2025	Solar
USS Westeros Solar LLC CSG	Standard Solar	Belle Plaine, MN	2 GWh	May 2020	Dec 2025	Solar
USS Milkweed Solar LLC CSG	Standard Solar	Paynesville, MN	2 GWh	May 2020	Dec 2025	Solar
NL IL - 1875 North Road CSG	Standard Solar	Pontiac, IL	3 GWh	Aug 2025	Dec 2025	Solar
Lake Hallie	Standard Solar	Chippewa Falls, WI	8 GWh	Nov 2024	Dec 2025	Solar
NE IL - Esmen West	Standard Solar	Pontiac, IL	2 GWh	Aug 2025	Dec 2025	Solar
NL IL - Kiwi	Standard Solar	Pinckneyville, IL	2 GWh	May 2025	Dec 2025	Solar
NL IL - Piatt 2 - West CSG	Standard Solar	De Land, IL	1 GWh	May 2025	Dec 2025	Solar
NL IL - Piatt 1 - East CSG	Standard Solar	De Land, IL	2 GWh	May 2025	Dec 2025	Solar
Enterprise MN - Hu's on First CSG	Standard Solar	Northfield, MN	30 MWh	Nov 2025	Dec 2025	Solar
Enterprise MN - Ferche CSG	Standard Solar	Paynesville, MN	35 MWh	Nov 2025	Dec 2025	Solar
Enterprise MN - Buscho CSG	Standard Solar	Owatonna, MN	26 MWh	Nov 2025	Dec 2025	Solar
Star Garden	Star Garden LLC	Starbuck, MN	2 GWh	Jan 2020	Dec 2025	Solar
State Farm	State Farm Insurance	Bloomington, IL	30 MWh	Sep 1996	Jul 2026	Distillate Fuel Oil
MNDOT Standby Generation	State of Minnesota Department of Administration	St. Paul, MN	47 MWh	Jun 1995	Jul 2026	Distillate Fuel Oil
Stearns Solar I	Stearns Solar I LLC	Albany, MN	2 GWh	Aug 2019	Dec 2025	Solar
Stoneheart Solar, LLC	Stoneheart Solar, LLC	Saginaw, MI	4 GWh	Nov 2020	Dec 2025	Solar
Straight Garden Solar	Straight Garden LLC	Faribault, MN	2 GWh	Feb 2020	Dec 2025	Solar
Strandness Garden	Strandness Garden LLC	Starbuck, MN	2 GWh	Jan 2020	Dec 2025	Solar
Studenski Community Solar LLC CSG	Studenski Community Solar LLC	Sauk Rapids, MN	2 GWh	Mar 2021	Dec 2025	Solar
Sturgeon Garden	Sturgeon Garden LLC	Goodhue, MN	2 GWh	Nov 2023	Dec 2025	Solar
Stuttgart Solar	Stuttgart Solar, LLC	Stuttgart, AR	149 GWh	Dec 2017	Jul 2026	Solar
Sugar Creek Wind One LLC	Sugar Creek Wind One LLC	TBD, IL	579 GWh	Oct 2020	Jul 2026	Wind
Sullivan B Community Solar LLC	Sullivan B Community Solar LLC	Macomb, IL	4 GWh	Nov 2020	Dec 2025	Solar
California Ridge Wind Energy LLC	SunEdison LLC	Fithian, IL	692 GWh	Nov 2012	Jul 2026	Wind
Sunflower County	Sunflower County Solar Project, LLC	Ruleville, MS	148 GWh	Aug 2022	Jul 2026	Solar
Sunlight Road Solar	Sunlight Road Solar, LLC	Franklinton, LA	115 GWh	Oct 2024	Jul 2026	Solar
Sunrise Community Solar	Sunrise Community Solar	North Branch, MN	8 GWh	Nov 2016	Dec 2025	Solar
Becker Solar 5 CSG	SunShare Management	St. Michael, MN	1 GWh	Feb 2019	Dec 2025	Solar
Linden 02 CSG	SunShare Management	Belle Plaine, MN	2 GWh	Apr 2020	Dec 2025	Solar
Becker Solar 4 CSG	SunShare Management	St. Michael, MN	1 GWh	Feb 2019	Dec 2025	Solar
Becker Solar 3 CSG	SunShare Management	St. Michael, MN	1 GWh	Feb 2019	Dec 2025	Solar

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#61	Alcoa Power Generating, Inc. - Yadkin Division	433.0 GWh	4
#26	Associated Electric Cooperative, Inc.	22.9 TWh	47
#13	Duke Energy Carolinas	113.4 TWh	578
#50	Duke Energy Progress West	4.6 TWh	15
#23	Louisville Gas and Electric Company and Kentucky Utilities Company	34.2 TWh	25
#1	PJM Interconnection, LLC	890.9 TWh	2,806
#6	Southern Company Services, Inc. - Trans	259.3 TWh	423
#5	Southwest Power Pool	314.5 TWh	876
#53	Southwestern Power Administration	3.5 TWh	37
#9	Tennessee Valley Authority	166.2 TWh	209

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#1	PJM Interconnection, LLC	890.9 TWh	2,806
#2	Midcontinent Independent System Operator, Inc.	677.7 TWh	3,095
#3	Electric Reliability Council of Texas, Inc.	506.3 TWh	1,487
#5	Southwest Power Pool	314.5 TWh	876
#6	Southern Company Services, Inc. - Trans	259.3 TWh	423
#7	California Independent System Operator	168.7 TWh	2,170
#9	Tennessee Valley Authority	166.2 TWh	209
#10	Florida Power & Light Co.	153.0 TWh	188
#12	New York Independent System Operator	134.1 TWh	1,334
#13	Duke Energy Carolinas	113.4 TWh	578