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
Grand Junction	City of Grand Junction - (IA)	Grand Junction, IA	41 MWh	Nov 1994	Dec 2025	Distillate Fuel Oil
Grand Blanc Generating Station	Energy Developments, Inc d/b/a EDL	Grand Blanc, MI	50 GWh	Jun 1994	Dec 2025	Landfill Gas
Louisiana Sugar Refining	Louisiana Sugar Refining LLC	Gramercy, LA	9 GWh	Aug 1930	Dec 2025	Natural Gas
Atlantic Alumina, Gramercy Operations	Atalco Gramercy LLC	Gramercy, LA	208 GWh	Jan 1958	Dec 2024	Natural Gas
Graettinger	City of Graettinger - (IA)	Graettinger, IA	49 MWh	Jul 1957	Dec 2025	Distillate Fuel Oil
Gowrie	Gowrie Municipal Utilities - (IA)	Gowrie, IA	3 MWh	Dec 2012	Dec 2025	Distillate Fuel Oil
POET Biorefining - Gowrie	POET Biorefining - Gowrie	Gowrie, IA	2 GWh	Oct 2018	Dec 2025	Natural Gas
ADC Varner	Entegrity Solar ADC, LLC	Gould, AR	9 GWh	Feb 2024	Dec 2024	Solar
Green Cow Power	Green Cow Power LLC	Goshen, IN	11 GWh	Mar 2015	Dec 2025	Other Biomass Gas
Betcher Community Solar Garden	Betcher CSG LLC	Goodhue, MN	2 GWh	Jul 2018	Dec 2025	Solar
USS Wildcat Solar LLC	United States Solar Corporation	Goodhue, MN	2 GWh	Oct 2021	Dec 2025	Solar
Betcher CSG 1, LLC	Madison Energy Holdings LLC	Goodhue, MN	2 GWh	Oct 2020	Dec 2025	Solar
Sturgeon Garden	Sturgeon Garden LLC	Goodhue, MN	2 GWh	Nov 2023	Dec 2025	Solar
USS Wells Creek Solar LLC	United States Solar Corporation	Goodhue, MN	2 GWh	Dec 2022	Dec 2025	Solar
USS Maverick Solar LLC (CSG)	United States Solar Corporation	Good Thunder, MN	1 GWh	Nov 2023	Dec 2025	Solar
Spring Prairie Solar LLC CSG	United States Solar Corporation	Glyndon, MN	2 GWh	Apr 2024	Dec 2025	Solar
USS Buckaroo Solar LLC CSG	Standard Solar	Glydon, MN	2 GWh	Sep 2020	Dec 2025	Solar
Vega Community Solar	Vega Community Solar	Glenwood, MN	8 GWh	Sep 2017	Dec 2025	Solar
Armstrong Solar	ETCAP NES CS MN 06 LLC	Glenwood, MN	5 GWh	Feb 2018	Dec 2025	Solar
Cassiopeia Community Solar	Geronimo Power	Glenwood, MN	2 GWh	Feb 2019	Dec 2025	Solar
Libra Community Solar	Geronimo Power	Glenwood, MN	2 GWh	Oct 2018	Dec 2025	Solar
Aquila Community Solar	Geronimo Power	Glenwood, MN	2 GWh	Feb 2019	Dec 2025	Solar
Lantana Solar, LLC	Geronimo Power	Glenwood, MN	2 GWh	Dec 2020	Dec 2025	Solar
Lowry CSG2, LLC	Nautilus Solar Solutions	Glenwood, MN	2 GWh	Nov 2020	Dec 2025	Solar
Novel Stavem Solar LLC CSG	REA Investments, LLC	Glenwood, MN	2 GWh	Aug 2021	Dec 2025	Solar
Camellia Solar, LLC	Geronimo Power	Glenwood, MN	2 GWh	Nov 2020	Dec 2025	Solar
Freeborn Wind Farm	Northern States Power Co - Minnesota	Glenville, MN	772 GWh	Apr 2021	May 2026	Wind
Alcona	Consumers Energy Co - (MI)	Glennie, MI	26 GWh	Dec 1923	Dec 2025	Water
Glendive GT	Montana-Dakota Utilities Co	Glendive, MT	16 GWh	May 1979	Dec 2025	Natural Gas : 98.8% Distillate Fuel Oil : 1.2%
Glencoe	Glencoe Light & Power Comm	Glencoe, MN	146 MWh	May 1957	Dec 2025	Distillate Fuel Oil : 99.7%
Spruce Ridge Gas Recovery	WM Renewable Energy LLC	Glencoe, MN	25 GWh	Mar 2008	Dec 2025	Landfill Gas
Plato CSG1, LLC	Nautilus Solar Solutions	Glencoe, MN	2 GWh	Dec 2020	Dec 2025	Solar
Glen Ullin Station 6	Montana-Dakota Utilities Co	Glen Ullin, ND	32 GWh	Jun 2009	Dec 2025	Waste Heat
Glen Ullin Energy Center	ALLETE Clean Energy	Glen Ullin, ND	423 GWh	Nov 2019	May 2026	Wind
Big Falls	Northern States Power Co - Minnesota	Glen Fora, WI	27 GWh	Dec 1921	Dec 2025	Water
Willford Solar, LLC	Willford Solar, LLC	Gladwin, MI	41 GWh	Sep 2023	Dec 2025	Solar
Hannibal	OneEnergy, Inc.	Gillman, WI	378 MWh	Sep 2025	Dec 2025	Solar
Archtop Solar	Archtop Property Management LLC	Gibson City, IL	64 GWh	-	May 2026	Solar
Drummer Creek I Solar LLC	Dimension Energy LLC	Gibson City, IL	170 MWh	Nov 2025	Dec 2025	Solar
Gibson City Energy Center LLC	Gibson City Energy Center LLC	Gibson City, IL	109 GWh	May 2000	Dec 2024	Natural Gas
Gibbon Solar	Green Street Power Partners	Gibbon, MN	6 GWh	May 2019	Dec 2025	Solar
Germantown	Wisconsin Electric Power Co	Germantown, WI	33 GWh	Jun 1978	Dec 2025	Natural Gas : 83.1% Distillate Fuel Oil : 16.9%
Omega Hills Gas Recovery	WM Renewable Energy LLC	Germantown, WI	78 GWh	Nov 1985	May 2026	Landfill Gas
Geneseo	City of Geneseo - (IL)	Geneseo, IL	8 GWh	Jun 1957	May 2026	Wind : 73.9% Solar : 21.1% Distillate Fuel Oil : 4.9%
Geismar	BASF Corporation	Geismar, LA	626 GWh	Jun 1985	Dec 2025	Natural Gas : 85.5% Other Gas : 14.5%
Shell Chemical	Shell Chemical LP - Geismar	Geismar, LA	585 GWh	Jul 2002	Dec 2025	Natural Gas
Geismar Cogen	Air Liquide Large Industries U S LP	Geismar, LA	528 GWh	Dec 1999	Dec 2025	Natural Gas
Titlow Garden LLC CSG	Titlow Garden LLC	Gaylord, MN	2 GWh	Dec 2022	Dec 2024	Solar
Mud Garden Solar	Mud Garden LLC	Gaylord, MN	2 GWh	Feb 2020	Dec 2025	Solar
SolarClub 28 LLC	Nautilus Solar Solutions	Gaylord, MN	2 GWh	Nov 2020	Dec 2025	Solar
Livingston Generating Station	CMS Generation MI Power LLC	Gaylord, MI	22 GWh	May 1999	Dec 2025	Natural Gas
Gaylord - Wolverine	Wolverine Power Supply Coop	Gaylord, MI	37 GWh	May 2001	Dec 2025	Natural Gas
Gas City Solar Park	Indiana Municipal Power Agency	Gas City, IN	4 GWh	May 2020	Dec 2025	Solar
Gary Works	United States Steel-Gary	Gary, IN	995 GWh	Mar 1997	May 2026	Blast Furnace Gas : 57.0% Natural Gas : 43.0%
USS Kass Solar LLC	Standard Solar	Garvin, MN	2 GWh	Dec 2020	Dec 2025	Solar
Hawkeye Power Partners LLC	Hawkeye Power Partners LLC	Garner, IA	168 GWh	Mar 1999	Dec 2025	Wind
Hancock County Wind Energy Center	FPL Energy Hancock County Wind, LLC	Garner, IA	250 GWh	Nov 2002	May 2026	Wind
Heritage Garden Wind Farm I LLC	DTE Sustainable Generation	Garden, MI	71 GWh	Aug 2012	Dec 2025	Wind
Fairbanks Wind Park	DTE Electric Company	Garden, MI	182 GWh	Dec 2021	May 2026	Wind
Garden 1 Solar Park	DTE Sustainable Generation	Garden Township, MI	1 GWh	Aug 2016	Dec 2025	Solar
Garden 2 Solar Park	DTE Sustainable Generation	Garden Township, MI	3 GWh	May 2022	Dec 2025	Solar
Illinois PV Knox 3A	SoCore Energy LLC	Galesburg, IL	3 GWh	Nov 2024	Dec 2025	Solar
Illinois PV Knox 3B	SoCore Energy LLC	Galesburg, IL	3 GWh	Nov 2024	Dec 2025	Solar
Callaway	Union Electric Co - (MO)	Fulton, MO	9 TWh	Nov 1984	May 2026	Nuclear
USS KVPV Solar LLC CSG	Standard Solar	Fulton, MN	2 GWh	Sep 2020	Dec 2025	Solar
Whiteside Solar 1 CSG	Whiteside Solar 1, LLC	Fulton, IL	4 GWh	Nov 2020	Dec 2025	Solar
Cattail (CSG)	Cattail Solar, LLC	Fulton, IL	4 GWh	May 2022	Dec 2025	Solar
USS Origami Solar	USS Origami Solar LLC	Fulton, IL	1 GWh	Sep 2025	Dec 2025	Solar
USS Cattail Solar	USS Cattail Solar LLC	Fulton, IL	1 GWh	Jul 2025	Dec 2025	Solar
Frontenac Holdco LLC, CSG	Frontenac Holdco LLC	Frontenac, MN	8 GWh	Feb 2019	Dec 2025	Solar
Fermi	DTE Electric Company	Frenchtown Twp, MI	8 TWh	Mar 1966	May 2026	Nuclear
Michael Solar	SoCore Energy LLC	Freeport, MN	7 GWh	Nov 2017	Dec 2025	Solar
2662 Freeport Solar 1 CSG	2662 Freeport Solar 1, LLC	Freeport, IL	3 GWh	Nov 2020	Dec 2025	Solar
Cedarville (IL)	Generate Capital	Freeport, IL	4 GWh	Apr 2024	Dec 2025	Solar
Freeburg	Village of Freeburg - (IL)	Freeburg, IL	145 MWh	Jul 1948	Dec 2025	Distillate Fuel Oil
Adams Road Solar	Wisconsin Electric Power Co	Franksville, WI	6 MWh	Nov 2025	Dec 2025	Solar
Raymond Solar WI, LLC	Wisconsin Electric Power Co	Franksville, WI	8 GWh	Jan 2025	Dec 2025	Solar
Sunlight Road Solar	Sunlight Road Solar, LLC	Franklinton, LA	116 GWh	Oct 2024	May 2026	Solar
Iris Solar LLC	Iris Solar LLC	Franklinton, LA	117 GWh	Sep 2022	May 2026	Solar
Metro Gas Recovery	WM Renewable Energy LLC	Franklin, WI	41 GWh	Nov 1985	Dec 2025	Landfill Gas
Franklin CSG 1	Franklin CSG 1 LLC	Franklin, MN	913 MWh	Jun 2025	Dec 2025	Solar
USS Franklin Solar LLC	United States Solar Corporation	Franklin, MN	2 GWh	Dec 2022	Dec 2025	Solar
Preston Garden (CSG)	Preston Garden LLC	Franklin, MN	2 GWh	Jul 2024	Dec 2025	Solar
USS Catfish Solar LLC	United States Solar Corporation	Franklin, MN	2 GWh	Dec 2022	Dec 2025	Solar
Ivanhoe Generation Facility	Orion Engineered Carbons	Franklin, LA	72 GWh	Mar 2023	Dec 2025	Waste Heat
Hardy Hills Solar Energy LLC	Hardy Hills Solar LLC	Frankfort, IN	360 GWh	Feb 2024	May 2026	Solar
Colfax	DTE Electric Company	Fowlerville, MI	146 MWh	Oct 1969	Dec 2025	Distillate Fuel Oil
Fountain	Altus Power America Management, LLC	Fountain, MN	6 GWh	Oct 2021	Dec 2025	Solar
Fort Polk (fka Johnson) - Chaffee East	Onyx Asset Services Group	Fort Polk North, LA	644 MWh	Oct 2025	Dec 2025	Solar
Fort Polk (fka Johnson) - Chaffee West	Onyx Asset Services Group	Fort Polk North, LA	750 MWh	Oct 2025	Dec 2025	Solar
Holliday Creek Solar	MidAmerican Energy Co	Fort Dodge, IA	205 GWh	Jun 2022	May 2026	Solar
Hackbarth Solar WI, LLC	Wisconsin Electric Power Co	Fort Atkinson, WI	9 GWh	Nov 2024	Dec 2025	Solar
Jones Dairy	Wisconsin Electric Power Co	Fort Atkinson, WI	4 GWh	Jun 2021	Dec 2025	Solar
Woodruff Electric Cooperative	Today's Power, Inc.	Forrest City, AR	2 GWh	Apr 2019	Dec 2025	Solar
Forrest City- Prison Site	Greenbacker Renewable Energy Corporation	Forrest City, AR	2 GWh	Mar 2021	Dec 2024	Solar
Forrest City- Eldridge Road	Greenbacker Renewable Energy Corporation	Forrest City, AR	2 GWh	Mar 2021	Dec 2024	Solar
Winnebago Wind Power Project	Avangrid Power LLC	Forest City, IA	61 GWh	Aug 2008	Dec 2025	Wind
Forest City Solar	Green Street Power Partners	Forest City, IA	5 GWh	Aug 2019	Dec 2025	Solar
Forest City Light Plant	City of Forest City- (IA)	Forest City, IA	392 MWh	Dec 1945	Dec 2025	Distillate Fuel Oil
Ford County Wind Farm LLC	Ford Ridge	Ford County, IL	469 GWh	Feb 2022	May 2026	Wind

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