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
Louise Solar	Geronimo Power	Taopi, MN	91 GWh	Nov 2024	May 2026	Solar
Dow St Charles Operations	Dow Chemical Co - St Charles	Taft, LA	2 TWh	Nov 1996	May 2026	Natural Gas : 99.0% Other Gas : 1.0%
Prairie State Solar Project	Prairie State Solar, LLC	Swanwick Township, IL	224 GWh	Jun 2021	May 2026	Solar
Superior	DTE Electric Company	Superior Twp, MI	789 MWh	Sep 1966	Dec 2025	Distillate Fuel Oil
Sumrall II Solar Farm	Onward Energy	Sumrall, MS	109 GWh	Nov 2017	May 2026	Solar
Hawkeye Wind Farm	Greenbacker Renewable Energy Corporation	Sumner, IA	171 GWh	Sep 2012	Dec 2025	Wind
Sumner	City of Sumner - (IA)	Sumner, IA	55 MWh	Jul 1956	Dec 2025	Distillate Fuel Oil
Calcasieu	Entergy Louisiana LLC	Sulphur, LA	139 GWh	Apr 2000	Dec 2025	Natural Gas
CITGO Refinery Powerhouse	CITGO Petroleum Corp	Sulphur, LA	224 GWh	Dec 1941	Dec 2025	Other Gas
Lake Charles Plant	Rain CII Carbon LLC	Sulphur, LA	115 GWh	Nov 2012	Oct 2025	Waste Heat
Merom	Hallador Power Company, LLC	Sullivan, IN	4 TWh	Jan 1982	May 2026	Bituminous Coal : 99.7%
Sullivan (IL)	City of Sullivan - (IL)	Sullivan, IL	462 MWh	May 1946	May 2026	Distillate Fuel Oil
Stuttgart Solar	Stuttgart Solar, LLC	Stuttgart, AR	149 GWh	Dec 2017	May 2026	Solar
Waxdale	S.C. Johnson & Son, Inc.	Sturtevant, WI	37 GWh	Nov 2003	May 2026	Natural Gas : 43.5% Landfill Gas : 30.9% Wind : 17.2% Solar : 8.4%
Wind GEM	Wind GEM, LLC	Stuart, IA	5 GWh	Aug 2015	Dec 2025	Wind
Gilliam South	City of Stuart - (IA)	Stuart, IA	4 MWh	Jan 2001	Dec 2025	Distillate Fuel Oil
South Strawberry	City of Strawberry Point -(IA)	Strawberry Point, IA	13 MWh	Dec 2001	Dec 2024	Distillate Fuel Oil
Strawberry Point DPC Solar	SoCore Energy LLC	Strawberry Point, IA	2 GWh	Oct 2017	Dec 2025	Solar
Great Pathfinder Wind	Great Pathfinder Wind	Stratford, IA	731 GWh	Jan 2023	May 2026	Wind
UW Kegonsa Customer Hosted Solar	Wisconsin Power & Light Co	Stoughton, WI	2 GWh	Apr 2025	Dec 2025	Solar
Story City Wind Project	Hamilton Wind Energy LLC	Story City, IA	5 GWh	Sep 2010	Dec 2025	Wind
Story City	City of Story City - (IA)	Story City, IA	315 MWh	Dec 1963	Dec 2025	Distillate Fuel Oil : 87.0% Natural Gas : 13.0%
Stewart CSG1, LLC	Nautilus Solar Solutions	Stewart, MN	2 GWh	Jul 2021	Dec 2025	Solar
USS Verbena Solar LLC	United States Solar Corporation	Stewart, MN	2 GWh	Sep 2022	Sep 2025	Solar
McLeod Community Solar One LLC CSG	Madison Energy Holdings LLC	Stewart, MN	2 GWh	Nov 2019	Dec 2025	Solar
FastSun 7 CSG	Altus Power America Management, LLC	Stewart, MN	2 GWh	Nov 2019	Dec 2025	Solar
Stevens Point	Consolidated Water Power Co	Stevens Point, WI	26 GWh	Dec 1917	Dec 2025	Water
Stevens Point Mill	Pixelle Specialty Solution, LLC	Stevens Point, WI	14 GWh	Jan 2002	Dec 2025	Natural Gas
Ouachita	Entergy Louisiana LLC	Sterlington, LA	4 TWh	Jul 2002	May 2026	Natural Gas
Perryville Power Station	Entergy Louisiana LLC	Sterlington, LA	4 TWh	May 2001	May 2026	Natural Gas
Sterlington Solar	Entergy Louisiana LLC	Sterlington, LA	37 GWh	-	May 2026	Solar
White Rapids	Wisconsin Electric Power Co	Stephenson, MI	33 GWh	Sep 1927	Dec 2025	Water
Chalk Hill	Wisconsin Electric Power Co	Stephenson, MI	34 GWh	Apr 1927	Dec 2025	Water
State Center	City of State Center - (IA)	State Center, IA	153 MWh	Jul 1972	Dec 2025	Distillate Fuel Oil : 72.4% Natural Gas : 27.6%
Strandness Garden	Strandness Garden LLC	Starbuck, MN	2 GWh	Jan 2020	Dec 2025	Solar
Star Garden	Star Garden LLC	Starbuck, MN	2 GWh	Jan 2020	Dec 2025	Solar
PopeSun CSG, LLC	SunStrong Management, LLC	Starbuck, MN	6 GWh	Nov 2017	Dec 2025	Solar
Malmedal Solar Garden	Altus Power America Management, LLC	Starbuck, MN	2 GWh	Jun 2019	Dec 2025	Solar
Wollan Garden Solar	Altus Power America Management, LLC	Starbuck, MN	2 GWh	Jun 2019	Dec 2025	Solar
SolarClub 03	Nautilus Solar Solutions	Starbuck, MN	2 GWh	Aug 2023	Dec 2025	Solar
C&L	Today's Power, Inc.	Star City, AR	2 GWh	May 2020	Dec 2025	Solar
Star City School District	Today's Power, Inc.	Star City, AR	2 GWh	Aug 2021	Dec 2025	Solar
Wolf River (Chipewa 1)	Greenbacker Renewable Energy Corporation	Stanley, WI	3 GWh	Jan 2024	Dec 2025	Solar
USS Solar Brick	Standard Solar	Standard City, IL	5 GWh	May 2021	Dec 2025	Solar
USS Rockpoint Solar CSG	United States Solar Corporation	Stacy, MN	2 GWh	Nov 2018	Dec 2025	Solar
USS Good Solar CSG	United States Solar Corporation	Stacy, MN	2 GWh	Nov 2018	Dec 2025	Solar
Lake Emily Solar	Enel Green Power NA, Inc.	St. Peter, MN	9 GWh	Nov 2016	Dec 2025	Solar
Paulson Community (CSG)	CleanCapital Holdings	St. Peter, MN	2 GWh	Mar 2020	Dec 2025	Solar
High Bridge	Northern States Power Co - Minnesota	St. Paul, MN	3 TWh	Apr 2008	May 2026	Natural Gas
MNDOT Standby Generation	State of Minnesota Department of Administration	St. Paul, MN	51 MWh	Jun 1995	May 2026	Distillate Fuel Oil
St. Paul Intl Airport Red & Blue Parking	Metropolitan Airports Commission	St. Paul, MN	2 GWh	Nov 2015	May 2026	Solar
Twin Cities Hydro LLC	Twin Cities Hydro LLC	St. Paul, MN	97 GWh	Sep 1924	Dec 2025	Water
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%
MSC-GreyCloud01 Community Solar	MSC-GreyCloud01 LLC	St. Paul Park, MN	2 GWh	Feb 2019	Dec 2024	Solar
Becker Solar 5 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
Wright Cuddyer CSG	Minnesota Solar CSG 1, LLC	St. Michael, MN	5 GWh	Sep 2018	Dec 2024	Solar
Becker Solar CSG	SunShare Management	St. Michael, MN	1 GWh	Feb 2019	Dec 2025	Solar
Becker Solar 2 CSG	SunShare Management	St. Michael, MN	1 GWh	Feb 2019	Dec 2025	Solar
WrightSun CSG, LLC	SunStrong Management, LLC	St. Michael, MN	8 GWh	Dec 2017	Dec 2025	Solar
Becker Solar 4 CSG	SunShare Management	St. Michael, MN	1 GWh	Feb 2019	Dec 2025	Solar
IKEA St. Louis 410	IKEA Property Inc	St. Louis, MO	328 MWh	Aug 2015	Apr 2025	Solar
Anheuser-Busch St Louis	Anheuser-Busch Inc	St. Louis, MO	38 GWh	Dec 1938	May 2026	Natural Gas : 93.0% Other Biomass Gas : 7.0%
Southwestern Bell Telephone	AT&T	St. Louis, MO	105 MWh	Jan 1992	Apr 2026	Distillate Fuel Oil
St Louis	City of St Louis - (MI)	St. Louis, MI	8 MWh	Dec 1918	Dec 2025	Distillate Fuel Oil
Orion Community Solar	Orion Community Solar	St. Joseph, MN	4 GWh	Dec 2016	Dec 2025	Solar
Bingham Solar, LLC	Geronimo Power	St. Johns, MI	42 GWh	Nov 2020	Dec 2025	Solar
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%
River Bend	Entergy Louisiana LLC	St. Francisville, LA	8 TWh	May 1986	May 2026	Nuclear
Connexus Solar Stanford 1STF	REA Investments, LLC	St. Francis, MN	13 GWh	Apr 2021	Dec 2025	Solar
Conagra Foods at St. Elmo	Luminace Solar Illinois 2, LLC	St. Elmo, IL	3 GWh	Dec 2020	Dec 2025	Solar
FastSun 21 CSG	Altus Power America Management, LLC	St. Cloud, MN	2 GWh	May 2021	Dec 2025	Solar
USS Haven Solar LLC CSG	Standard Solar	St. Cloud, MN	2 GWh	Oct 2019	Dec 2025	Solar
GSPP Imholte CSG	Green Street Power Partners	St. Cloud, MN	2 GWh	Apr 2019	Dec 2025	Solar
St. Cloud Solar CSG	Geronimo Power	St. Cloud, MN	8 GWh	Mar 2018	Dec 2025	Solar
GSPP Held LLC CSG	Green Street Power Partners	St. Cloud, MN	4 GWh	May 2019	Dec 2025	Solar
USS White Cloud LLC CSG	Standard Solar	St. Cloud, MN	2 GWh	Oct 2019	Dec 2025	Solar
Marmas Solar CSG	Geronimo Power	St. Cloud, MN	5 GWh	Mar 2018	Dec 2025	Solar
Sherburne North Project CSG	Madison Energy Investments LLC	St. Cloud, MN	8 GWh	Jun 2018	Sep 2025	Solar
St. Charles Power Plant	City of St Charles - (MN)	St. Charles, MN	75 MWh	Nov 2004	Dec 2025	Distillate Fuel Oil
St Bonifacius	Great River Energy	St. Bonifacius, MN	3 GWh	May 1978	Dec 2025	Distillate Fuel Oil
Turtle Creek Wind Farm LLC	Turtle Creek Wind Farm LLC	St. Ansgar, IA	702 GWh	Nov 2018	May 2026	Wind
Trigen St. Louis	Centerstream STL, LLC	St Louis, MO	86 GWh	May 1999	Jul 2025	Natural Gas
Renewable Energy Center at BJH	Union Electric Co - (MO)	St Louis, MO	677 MWh	Sep 2019	Apr 2025	Solar
Coughlin Power Station	Cleco Power LLC	St Landry, LA	3 TWh	Mar 1961	May 2026	Natural Gas
St James	City of St James - (MN)	St James, MN	93 MWh	Jun 2002	Dec 2025	Distillate Fuel Oil
Carville Energy LLC	Carville Energy LLC	St Gabriel, LA	3 TWh	May 2003	May 2026	Natural Gas
St Croix Falls	Northern States Power Co - Minnesota	St Croix Falls, WI	80 GWh	Dec 1909	Dec 2025	Water
St. Cloud Hydro	St. Cloud Hydroelectric Generation Facility	St Cloud, MN	46 GWh	May 1988	Dec 2025	Water
St. Charles Solar	Green Street Power Partners	St Charles Township, MN	3 GWh	Aug 2019	Dec 2025	Solar
Springfield (MN)	Springfield Public Utils Comm - (MN)	Springfield, MN	15 MWh	May 1994	Dec 2025	Distillate Fuel Oil
Reynolds	City of Springfield - (IL)	Springfield, IL	179 MWh	Oct 1970	Dec 2025	Distillate Fuel Oil
Dallman	City of Springfield - (IL)	Springfield, IL	828 GWh	May 1968	May 2026	Bituminous Coal : 99.5% Natural Gas : 0.5%
Factory	City of Springfield - (IL)	Springfield, IL	132 MWh	Jul 1973	Dec 2025	Distillate Fuel Oil
Interstate	City of Springfield - (IL)	Springfield, IL	58 GWh	Aug 1997	Dec 2025	Natural Gas : 99.2% Distillate Fuel Oil : 0.8%
Waste Management Eco Vista LFGTE	WM Renewable Energy LLC	Springdale, AR	22 GWh	Oct 2010	Dec 2024	Natural Gas
Fillmore County Solar Project	Geronimo Power	Spring Valley, MN	81 GWh	Nov 2024	May 2026	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%
Spooner Solar Array	Onsite Partners, LLC	Spooner, WI	4 GWh	May 2019	Dec 2024	Solar
Spiritwood Station	Great River Energy	Spiritwood, ND	213 GWh	Oct 2014	May 2026	Natural Gas : 58.1% Refined Coal : 41.9%

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