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
Stahl Wind Energy	Stahl Wind Energy, LLC (Longroad)	Pipestone, MN	2 GWh	Nov 2004	Nov 2024	Wind
STAG St. Paul Project CSG	STAG St. Paul Community Solar LLC	Saint Paul, MN	1 GWh	Dec 2019	Dec 2024	Solar
St. Paul Intl Airport Red & Blue Parking	Metropolitan Airports Commission	St. Paul, MN	3 GWh	Nov 2015	Sep 2025	Solar
St Paul Cogeneration	St Paul Cogeneration LLC	St. Paul, MN	151 GWh	Mar 2003	Dec 2024	Wood/Wood Waste Solids : 82.2% Natural Gas : 17.8%
St. Olaf Wind Turbine	St. Olaf College	Northfield, MN	3 GWh	Aug 2006	Dec 2024	Wind
St. Olaf StandBy Generators	St. Olaf College	Northfield, MN	31 MWh	May 1999	Dec 2024	Distillate Fuel Oil
St. Mary Clean Energy Center	Cleco Power LLC	Centerville, LA	201 GWh	Jul 2019	Dec 2024	Waste Heat
St Louis	City of St Louis - (MI)	St. Louis, MI	29 MWh	Dec 1918	Dec 2024	Water : 75.9% Distillate Fuel Oil : 24.1%
St. James Solar (LA)	St. James Solar, LLC	Vacherie, LA	45 GWh	Jan 2023	Dec 2024	Solar
St James	City of St James - (MN)	St James, MN	36 MWh	Jun 2002	Dec 2024	Distillate Fuel Oil
St Francisville Mill	Hood Container of Louisiana, LLC	St. Francisville, LA	110 GWh	Feb 1966	Dec 2024	Black Liquor : 58.6% Natural Gas : 41.4%
St Croix Falls	Northern States Power Co - Minnesota	St Croix Falls, WI	105 GWh	Dec 1909	Dec 2024	Water
St. Cloud Solar CSG	National Grid Renewables	St. Cloud, MN	9 GWh	Mar 2018	Dec 2024	Solar
St. Cloud Hydro	St. Cloud Hydroelectric Generation Facility	St Cloud, MN	51 GWh	May 1988	Dec 2024	Water
St. Clair Solar 3	Pivot Energy	Washington Park, IL	158 MWh	May 2024	Dec 2024	Solar
St Clair	DTE Electric Company	East China Twp, MI	4 GWh	Jul 1953	Sep 2025	Natural Gas
St. Charles Solar	Butter Solar, LLC	St Charles Township, MN	3 GWh	Aug 2019	Dec 2024	Solar
St. Charles Power Station (LA)	Entergy Louisiana LLC	La Place, LA	6 TWh	Apr 2019	Sep 2025	Natural Gas
St. Charles Power Plant	City of St Charles - (MN)	St. Charles, MN	71 MWh	Nov 2004	Dec 2024	Distillate Fuel Oil
St Bonifacius	Great River Energy	St. Bonifacius, MN	2 GWh	May 1978	Dec 2024	Distillate Fuel Oil
Spruce Ridge Gas Recovery	WM Renewable Energy LLC	Glencoe, MN	22 GWh	Mar 2008	Dec 2024	Landfill Gas
Springfield Solar (WI)	Wisconsin Power & Light Co	Lomira, WI	203 GWh	Nov 2023	Sep 2025	Solar
Springfield (MN)	Springfield Public Utils Comm - (MN)	Springfield, MN	1 MWh	May 1994	Dec 2024	Distillate Fuel Oil
Spring Valley	Spring Valley Pub Utils Comm	Spring Valley, MN	157 MWh	Dec 1951	Dec 2024	Distillate Fuel Oil : 78.5% Natural Gas : 21.5%
Spring Prairie Solar WI, LLC	Wisconsin Electric Power Co	Burlington, WI	4 GWh	Nov 2023	May 2024	Solar
Spring Prairie Solar LLC CSG	United States Solar Corporation	Glyndon, MN	1 GWh	Apr 2024	Dec 2024	Solar
Spring Mill Solar RES	Hoosier Energy R E C, Inc	Mitchell, IN	2 GWh	Aug 2017	Dec 2024	Solar
Spooner Solar Array	AEP Onsite Partners, LLC	Spooner, WI	4 GWh	May 2019	Dec 2024	Solar
Spiritwood Station	Great River Energy	Spiritwood, ND	154 GWh	Oct 2014	Sep 2025	Natural Gas : 59.9% Refined Coal : 40.1%
Spica Community Solar	Spica Community Solar	Lake Lillian, MN	3 GWh	Jul 2017	Dec 2024	Solar
Spencer Gas Turbine	City of Spencer - (IA)	Spencer, IA	651 MWh	Dec 1969	Dec 2024	Kerosene
Speedway Solar, LLC	Speedway Solar, LLC	Morrison Town, IN	154 GWh	-	Sep 2025	Solar
Spartan PV 1, LLC	NJR Clean Energy Ventures Corporation	East Lansing, MI	12 GWh	Nov 2017	Dec 2024	Solar
Spartan Hills LLC	CHI Operations Inc	Lake Benton, MN	5 GWh	Dec 2000	Dec 2024	Wind
Southwestern Bell Telephone	AT&T	St. Louis, MO	116 MWh	Jan 1992	Aug 2025	Distillate Fuel Oil
Southside SD	Entegrity Solar Southside SD, LLC	Little Rock, AR	2 GWh	May 2023	Dec 2024	Solar
Southern Minnesota Beet Sugar	Southern Minnesota Beet Sugar	Renville, MN	24 GWh	Aug 1976	Sep 2025	Subbituminous Coal : 70.9% Natural Gas : 28.5% Residual Fuel Oil : 0.6%
Southern Hills Wind Farm	MidAmerican Energy Co	Creston, IA	828 GWh	Feb 2021	Sep 2025	Wind
South Strawberry	City of Strawberry Point	Strawberry Point, IA	13 MWh	Dec 2001	Dec 2024	Distillate Fuel Oil
South Plant (IA)	Waverly Municipal Elec Utility	Waverly, IA	51 MWh	Apr 2000	Dec 2024	Distillate Fuel Oil
South Oak Creek	Wisconsin Electric Power Co	Oak Creek, WI	2 TWh	Nov 1959	Sep 2025	Subbituminous Coal : 99.7%
South Generation	Redwood Falls Public Util Comm	Redwood Falls, MN	169 MWh	Feb 2003	Dec 2024	Distillate Fuel Oil
South Garden	South Garden LLC	Winstead, MN	2 GWh	Jun 2023	Dec 2024	Solar
South Fork Wind Farm	South Fork Wind, LLC	Round Lake, MN	52 GWh	Nov 2016	Dec 2024	Wind
South Fond Du Lac	Wisconsin Power & Light Co	Fond du Lac, WI	5 GWh	Apr 1993	Dec 2024	Natural Gas : 98.0% Distillate Fuel Oil : 2.0%
South Central Electric Cooperative	Today's Power, Inc.	Arkadelphia, AR	2 GWh	Jul 2019	Dec 2024	Solar
Solway CT	Otter Tail Power Co	Solway, MN	125 GWh	Apr 2003	Dec 2024	Natural Gas
Soliloquoy Ridge LLC	CHI Operations Inc	Lake Benton, MN	5 GWh	Dec 2000	Dec 2024	Wind
SolarClub 35 LLC	Nautilus Solar Solutions	Mankato, MN	2 GWh	Nov 2020	Dec 2024	Solar
SolarClub 30 (CSG)	Nautilus Solar Solutions	Eden Valley, MN	2 GWh	Dec 2023	Dec 2024	Solar
SolarClub 28 LLC	Nautilus Solar Solutions	Gaylord, MN	2 GWh	Nov 2020	Dec 2024	Solar
SolarClub 23 LLC	Nautilus Solar Solutions	La Crescent, MN	2 GWh	Nov 2020	Dec 2024	Solar
SolarClub 20 LLC	Nautilus Solar Solutions	Wabasha, MN	2 GWh	Nov 2020	Dec 2024	Solar
SolarClub 15 LLC	Nautilus Solar Solutions	Clear Lake, MN	2 GWh	Nov 2020	Dec 2024	Solar
SolarClub 10 LLC	Nautilus Solar Solutions	Monticello, MN	2 GWh	Nov 2020	Dec 2024	Solar
SolarClub 03	Nautilus Solar Solutions	Starbuck, MN	2 GWh	Aug 2023	Dec 2024	Solar
Solar Star Urbana Landfill East	Solar Star Urbana Landfill East, LLC	Urbana, IL	4 GWh	Sep 2021	Dec 2024	Solar
Solar Star Urbana Landfill Central	Solar Star Urbana Landfill Central, LLC	Urbana, IL	4 GWh	Oct 2021	Dec 2024	Solar
Sobania Community Solar LLC	Madison Energy Holdings LLC	Clear Lake, MN	2 GWh	Aug 2020	Dec 2024	Solar
SMMPA Methane Energy Facility	Southern Minnesota Mun P Agny	Mora, MN	366 MWh	Mar 2012	Dec 2024	Landfill Gas
Smithland Hydroelectric Plant	American Mun Power-Ohio, Inc	Smithland, KY	328 GWh	Jun 2017	Sep 2025	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 2024	Solar
Sky Volt	Sky Volt, LLC	Greenfield, IA	5 GWh	Jul 2012	Dec 2024	Wind
Skalbeck Solar	Cascade Solar LLC	Sacred Heart, MN	2 GWh	Oct 2022	Dec 2024	Solar
SIUC	Southern Illinois University Carbondale	Carbondale, IL	9 GWh	May 1998	Sep 2025	Bituminous Coal
Sioux	Union Electric Co - (MO)	West Alton, MO	4 TWh	Apr 1967	Sep 2025	Subbituminous Coal : 73.2% Bituminous Coal : 26.7%
Silver Lake Solar WI, LLC	Wisconsin Electric Power Co	Salem, WI	2 GWh	Nov 2023	May 2024	Solar
Silver Lake Garden	Excelsior Energy Capital	Waseca, MN	2 GWh	Dec 2020	Dec 2024	Solar
Silver Creek	Cooperative Energy	Prentiss, MS	428 GWh	May 2003	Dec 2024	Natural Gas
Sigel Wind Park	DTE Electric Company	Harbor Beach, MI	257 GWh	Nov 2012	Sep 2025	Wind
Siems Solar Project CSG	Siems Community Solar LLC	Mazeppa, MN	2 GWh	Jul 2020	Dec 2024	Solar
Sidney A Murray Jr Hydroelectric	First National Bank-Commerce	Vidalia, LA	885 GWh	Apr 1990	Dec 2024	Water
Sibley One	City of Sibley - (IA)	Sibley, IA	42 MWh	Aug 1971	Dec 2024	Distillate Fuel Oil : 58.9% Natural Gas : 41.1%
Sibley No Two	City of Sibley - (IA)	Sibley, IA	38 MWh	Nov 1987	Dec 2024	Distillate Fuel Oil : 67.1% Natural Gas : 32.9%
Shirley Wind	Duke Energy Renewables Services	Denmark, WI	60 GWh	Oct 2010	Dec 2024	Wind
Shipsterns Solar, LLC	Shipsterns Solar, LLC	Albion, MI	35 GWh	Sep 2023	Dec 2024	Solar
Sheridan School Corporation Solar	Johnson Melloh Solutions	Sheridan, IN	2 GWh	May 2016	Dec 2024	Solar
Sherco Solar II	Northern States Power Co - Minnesota	Becker, MN	19 GWh	-	Sep 2025	Solar
Sherco Solar I	Northern States Power Co - Minnesota	Clear Lake, MN	393 GWh	Sep 2024	Sep 2025	Solar
Sherburne Solar Holdings, LLC	REA Investments, LLC	Princeton, MN	4 GWh	Feb 2021	Dec 2024	Solar
Sherburne North Project CSG	MN Solar Community, LLC	St. Cloud, MN	9 GWh	Jun 2018	Dec 2024	Solar
Sherburne County	Northern States Power Co - Minnesota	Becker, MN	7 TWh	Mar 1976	Sep 2025	Subbituminous Coal : 99.9%
Sherburne Community Solar One LLC CSG	Madison Energy Holdings LLC	Saint Cloud, MN	2 GWh	Nov 2019	Dec 2024	Solar
Sherburne Community Solar	AEP Onsite Partners, LLC	Clear Lake, MN	8 GWh	Feb 2018	Sep 2025	Solar
Shenandoah	MidAmerican Energy Co	Shenandoah, IA	44 MWh	Mar 2000	Dec 2024	Distillate Fuel Oil
Shell Chemical	Shell Chemical LP - Geismar	Geismar, LA	572 GWh	Jul 2002	Dec 2024	Natural Gas
Shelby Energy County	Shelby County Energy Center, LLC	Neoga, IL	201 GWh	May 2000	Dec 2024	Natural Gas
Sheboygan Falls	Wisconsin Power & Light Co	Sheboygan, WI	642 GWh	May 2005	Dec 2024	Natural Gas
Shaokatan Hills LLC	Shaokatan Hills, LLC (Longroad)	Hendricks, MN	12 GWh	Jul 1999	Dec 2024	Wind
Shane's Wind Machine	Shane's Wind Machine LLC	Ruthton, MN	7 GWh	Jun 2006	Dec 2024	Wind
Shamrock Solar LLC	Greenbacker Renewable Energy Corporation	Black River Falls, WI	5 GWh	Nov 2021	Dec 2024	Solar
Shakopee Met Council WTP	Oak Leaf Solar V LLC	Shakopee, MN	2 GWh	Feb 2016	Dec 2024	Solar
Shakopee Energy Park	Minnesota Municipal Power Agny	Shakopee, MN	24 GWh	Jan 2017	Dec 2024	Natural Gas
Severson Garden	Severson HoldCo LLC	Waseca, MN	943 MWh	Sep 2020	Dec 2024	Solar
Settlers Trail Wind Farm LLC	Big Sky Wind, LLC	Sheldon, IL	354 GWh	Sep 2011	Dec 2024	Wind
Security	TX LFG Energy, LP	Cleveland, TX	6 GWh	Feb 2003	Dec 2024	Landfill Gas
Sebree Solar, LLC - Hybrid	Sebree Solar, LLC	Robards, KY	41 GWh	-	Sep 2025	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

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