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
Upland Prairie	Interstate Power and Light Co	Spencer, IA	1 TWh	Feb 2019	May 2026	Wind
Spencer Gas Turbine	City of Spencer - (IA)	Spencer, IA	86 MWh	Dec 1969	Dec 2025	Kerosene
SV CSG Wagner A LLC	SunVest Solar LLC	Sparta, IL	5 GWh	Nov 2024	Dec 2025	Solar
Apple River	Northern States Power Co - Minnesota	Somerset, WI	13 GWh	Dec 1900	Dec 2025	Water
Solway CT	Otter Tail Power Co	Solway, MN	143 GWh	Apr 2003	Dec 2025	Natural Gas : 99.5%
South Belleville Solar, LLC	Dimension Energy LLC	Smithton Township, IL	385 MWh	Oct 2025	Dec 2025	Solar
Smithland Hydroelectric Plant	American Mun Power-Ohio, Inc	Smithland, KY	421 GWh	Jun 2017	May 2026	Water
Sleepy Eye	Sleepy Eye Public Utility Comm	Sleepy Eye, MN	131 MWh	Jun 1995	Dec 2024	Distillate Fuel Oil
Slayton Solar	Ecos Energy LLC	Slayton, MN	2 GWh	Dec 2012	Dec 2025	Solar
Auriga Community Solar	Geronimo Power	Slayton, MN	2 GWh	Nov 2018	Dec 2025	Solar
USS Slayton Solar LLC (CSG)	United States Solar Corporation	Slayton, MN	2 GWh	Jul 2024	Dec 2025	Solar
Angus Anson	Northern States Power Co - Minnesota	Sioux Falls, SD	239 GWh	Jul 1994	Dec 2025	Natural Gas : 99.9%
USS Water Fowl Solar LLC CSG	United States Solar Corporation	Silver Lake, MN	807 MWh	Aug 2022	Dec 2025	Solar
Prairie Solar LLC	MN8 Energy LLC	Sidney, IL	103 GWh	-	May 2026	Solar
IL Sidney Project1	IL Sidney Project1, LLC	Sidney, IL	5 GWh	Mar 2021	Dec 2025	Solar
Sibley One	City of Sibley - (IA)	Sibley, IA	174 MWh	Aug 1971	Dec 2025	Distillate Fuel Oil : 65.0% Natural Gas : 35.0%
Sibley No Two	City of Sibley - (IA)	Sibley, IA	37 MWh	Nov 1987	Dec 2025	Natural Gas : 90.9% Distillate Fuel Oil : 9.1%
Towanda	Dimension Energy LLC	Shirley, IL	7 MWh	Nov 2025	Dec 2025	Solar
Sheridan School Corporation Solar	Johnson Melloh Solutions	Sheridan, IN	2 GWh	May 2016	Dec 2025	Solar
Redfield Solar	Redfield PV I, LLC	Sheridan, AR	36 GWh	-	May 2026	Solar
Calhoun County Solar Project	AES Clean Energy	Sheridan Township, MI	250 GWh	Feb 2025	May 2026	Solar
San Jacinto County Peaking Facility	East Texas Electric Coop, Inc	Shepherd, TX	287 GWh	Jun 2001	Dec 2025	Natural Gas
Pine River Wind Park	DTE Electric Company	Shepherd, MI	380 GWh	Feb 2019	May 2026	Wind
Shenandoah	MidAmerican Energy Co	Shenandoah, IA	323 MWh	Mar 2000	Dec 2025	Distillate Fuel Oil
Settlers Trail Wind Farm LLC	RWE Clean Energy	Sheldon, IL	320 GWh	Sep 2011	Dec 2025	Wind
POET Biorefining - Shelbyville	POET Biorefining- Shelbyville	Shelbyville, IN	34 GWh	May 2020	Dec 2025	Natural Gas
Rocky Mountain Elk Solar Community Solar	Rocky Mountain Elk Solar, LLC	Sheffield, IL	108 MWh	Nov 2025	Dec 2025	Solar
Edgewater	Wisconsin Power & Light Co	Sheboygan, WI	2 TWh	Jun 1951	May 2026	Subbituminous Coal : 99.8%
Sheboygan Falls	Wisconsin Power & Light Co	Sheboygan, WI	452 GWh	May 2005	Dec 2025	Natural Gas
Onion River	Wisconsin Power & Light Co	Sheboygan Cedar Grove, WI	260 GWh	Nov 2023	May 2026	Solar
Shakopee Energy Park	Minnesota Municipal Power Agny	Shakopee, MN	57 GWh	Jan 2017	Dec 2025	Natural Gas
Blue Lake Solar	Cypress Creek Renewables	Shakopee, MN	3 GWh	Nov 2016	Dec 2025	Solar
Shakopee Met Council WTP	Oak Leaf Solar V LLC	Shakopee, MN	2 GWh	Feb 2016	Dec 2025	Solar
Koda Biomass Plant	Koda Energy LLC	Shakopee, MN	53 GWh	Apr 2009	Dec 2025	Agricultural By-Products : 75.1% Wood/Wood Waste Solids : 16.1% Natural Gas : 8.9%
Blue Lake	Northern States Power Co - Minnesota	Shakopee, MN	435 GWh	Feb 1974	Dec 2025	Natural Gas
Lawrence Creek Solar	Enel Green Power NA, Inc.	Shafer, MN	6 GWh	Nov 2016	Dec 2025	Solar
George Neal North	MidAmerican Energy Co	Sergeant Bluff, IA	2 TWh	Apr 1964	May 2026	Subbituminous Coal : 98.8% Natural Gas : 1.2%
Pine Street	Village of Sebewaing - (MI)	Sebewaing, MI	462 MWh	May 1969	Dec 2025	Natural Gas
MSC Sebewaing	Michigan Sugar Company	Sebewaing, MI	509 MWh	Sep 1979	Mar 2026	Bituminous Coal : 67.9% Natural Gas : 32.1%
Searcy Solar Hybrid	Searcy Solar, LLC	Searcy, AR	178 GWh	Dec 2021	May 2026	Solar
ACC	Entegrity Solar ACC, LLC	Searcy, AR	4 GWh	Apr 2023	Dec 2024	Solar
Searcy Water II	Entegrity Solar SWU 2, LLC	Searcy, AR	4 GWh	May 2021	Dec 2024	Solar
Searcy Water I	Entegrity Solar SWU, LLC	Searcy, AR	834 MWh	May 2021	Dec 2024	Solar
Happy Solar 1	Lightsource Renewable Energy Asset Management, LLC	Searcy, AR	214 GWh	Sep 2023	May 2026	Solar
Scottsburg Solar Park	Indiana Municipal Power Agency	Scottsburg, IN	11 GWh	Sep 2020	Dec 2025	Solar
Cardinal Point Wind	Cardinal Point LLC	Sciota, IL	521 GWh	Feb 2020	May 2026	Wind
New Harvest Wind Project LLC	Avangrid Power LLC	Schleswig, IA	263 GWh	Nov 2011	Dec 2025	Wind
Intrepid	MidAmerican Energy Co	Schaller, IA	546 GWh	Nov 2004	Dec 2025	Wind
Scanlon	ALLETE, Inc.	Scanlon, MN	7 GWh	Dec 1922	Dec 2025	Water
Forest Lake Solar CSG	Forest Lake Holdco LLC	Scandia, MN	7 GWh	Jun 2017	Dec 2025	Solar
USS Solar Sources LLC CSG	Standard Solar	Scandia, MN	2 GWh	Sep 2020	Dec 2025	Solar
MSC-Scandia01 CSG	MSC-Scandia01 LLC	Scandia, MN	2 GWh	Mar 2019	Dec 2024	Solar
Argo Navis Community Solar	Argo Navis Community Solar	Scandia, MN	5 GWh	Feb 2018	Dec 2025	Solar
Scandia Community Solar Garden	Scandia CSG LLC	Scandia, MN	4 GWh	Jun 2018	Dec 2024	Solar
Gemini Community Solar	Gemini Community Solar	Scandia, MN	5 GWh	Aug 2017	Dec 2025	Solar
Scandia CSG	Madison Energy Investments LLC	Scandia, MN	9 GWh	Dec 2017	Sep 2025	Solar
Saxon Falls	Northern States Power Co - Minnesota	Saxon, WI	9 GWh	Dec 1912	Dec 2025	Water
Edison Sault	Cloverland Electric Co-op	Sault Ste. Marie, MI	181 GWh	Jun 1901	Dec 2025	Water
Saint Marys Falls	USACE-Detroit District	Sault Ste. Marie, MI	156 GWh	Jun 1932	Dec 2025	Water
USS Golden Spike Solar LLC CSG	United States Solar Corporation	Sauk Rapids, MN	379 MWh	Sep 2025	Dec 2025	Solar
Studenski Community Solar LLC CSG	Studenski Community Solar LLC	Sauk Rapids, MN	2 GWh	Mar 2021	Dec 2025	Solar
Novel Pederson Solar CSG	REA Investments, LLC	Sauk Rapids, MN	2 GWh	Jul 2020	Dec 2025	Solar
USS Solar Rapids CSG	United States Solar Corporation	Sauk Rapids, MN	2 GWh	Dec 2018	Dec 2025	Solar
USS Kasch Solar CSG	United States Solar Corporation	Sauk Rapids, MN	2 GWh	Sep 2018	Dec 2025	Solar
USS Reindeer Solar LLC CSG	United States Solar Corporation	Sauk Rapids, MN	2 GWh	Nov 2020	Dec 2025	Solar
USS Mayhew Solar LLC CSG	Standard Solar	Sauk Rapids, MN	2 GWh	May 2020	Dec 2025	Solar
USS JJ Solar CSG	United States Solar Corporation	Sauk Rapids, MN	2 GWh	Dec 2018	Dec 2025	Solar
B.R. Sauk Rapids CSG	Minnesota Solar CSG 9, LLC	Sauk Rapids, MN	8 GWh	Oct 2017	Dec 2024	Solar
Delphinus Community Solar	Delphinus Community Solar	Sauk Rapids, MN	3 GWh	Feb 2018	Dec 2025	Solar
Black Oak Wind Farm	Black Oak Wind, LLC	Sauk Centre, MN	305 GWh	Nov 2016	May 2026	Wind
SCS American Bottoms 009885 Sauget, LLC	Arevon Energy, Inc.	Sauget, IL	2 GWh	Jul 2020	Dec 2025	Solar
Sartell Dam	Eagle Creek Renewable Energy, LLC	Sartell, MN	30 GWh	Feb 1985	Dec 2025	Water
B.R. Sartell CSG	Minnesota Solar CSG 21, LLC	Sartell, MN	4 GWh	Oct 2017	Dec 2024	Solar
Sartell Holdco CSG	Sartell Holdco LLC	Sartell, MN	8 GWh	Apr 2019	Dec 2025	Solar
USS Brockway Solar CSG	United States Solar Corporation	Sartell, MN	2 GWh	Dec 2018	Dec 2025	Solar
Marion Solar 4b LLC	Pivot Energy	Sandoval, IL	4 GWh	Apr 2024	Dec 2025	Solar
Marion Solar 2	Pivot Energy	Sandoval, IL	2 GWh	Dec 2024	Dec 2025	Solar
Dunns Bridge II Solar	Dunns Bridge II Solar and Storage Generation LLC	San Pierre, IN	774 GWh	Dec 2024	May 2026	Solar
Attala	Entergy Mississippi LLC	Sallis, MS	3 TWh	Feb 2001	May 2026	Natural Gas
George Neal South	MidAmerican Energy Co	Salix, IA	2 TWh	Jun 1979	May 2026	Subbituminous Coal : 99.1% Distillate Fuel Oil : 0.9%
Neal Energy Center Solar	MidAmerican Energy Co	Salix, IA	7 GWh	Jan 2022	Dec 2024	Solar
Silver Lake Solar WI, LLC	Wisconsin Electric Power Co	Salem, WI	9 GWh	Nov 2023	Dec 2025	Solar
Crooked Creek PV I	Crooked Creek PV I, LLC	Salem, IL	42 GWh	-	May 2026	Solar
North Arkansas Electric Cooperative	Today's Power, Inc.	Salem, AR	2 GWh	Apr 2021	Dec 2025	Solar
STAG St. Paul Project CSG	STAG St. Paul Community Solar LLC	Saint Paul, MN	1 GWh	Dec 2019	Dec 2025	Solar
Hartmann Project CSG	Hartmann Community Solar LLC	Saint Cloud, MN	1 GWh	Nov 2019	Dec 2025	Solar
Nautilus Saint Cloud Solar (CSG)	Nautilus Solar Solutions	Saint Cloud, MN	8 GWh	Mar 2019	May 2026	Solar
Sherburne Community Solar One LLC CSG	Madison Energy Holdings LLC	Saint Cloud, MN	2 GWh	Nov 2019	Dec 2025	Solar
Haven Solar Project CSG	Madison Energy Investments LLC	Saint Cloud, MN	5 GWh	Jun 2019	Sep 2025	Solar
Stoneheart Solar, LLC	Stoneheart Solar, LLC	Saginaw, MI	4 GWh	Nov 2020	Dec 2025	Solar
Geddes 1 Solar, LLC	Geddes 1 Solar, LLC	Saginaw, MI	4 GWh	Nov 2020	Dec 2025	Solar
Geddes 2 Solar, LLC	Geddes 2 Solar, LLC	Saginaw, MI	4 GWh	Dec 2020	Dec 2025	Solar
Sacred Heart CSG1, LLC	Nautilus Solar Solutions	Sacred Heart, MN	2 GWh	Jul 2021	Dec 2025	Solar
Skalbeck Solar	Cascade Solar LLC	Sacred Heart, MN	2 GWh	Oct 2022	Dec 2025	Solar
Novel Historical Society Solar CSG	REA Investments, LLC	Sacred Heart, MN	2 GWh	Oct 2019	Dec 2025	Solar
Sac County Wind, LLC	Sac County Wind	Sac City, IA	321 GWh	Nov 2021	May 2026	Wind
Lake Benton II	Northern States Power Co - Minnesota	Ruthton, MN	440 GWh	May 1999	Dec 2025	Wind
Shane's Wind Machine	Shane's Wind Machine LLC	Ruthton, MN	7 GWh	Jun 2006	Jan 2025	Wind
Louisiana Tech University Power Plant	Louisiana Tech University	Ruston, LA	49 GWh	Jun 2004	Dec 2025	Natural Gas
Arkansas Nuclear One	Entergy Arkansas LLC	Russellville, AR	14 TWh	Nov 1974	May 2026	Nuclear

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