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
Camellia Solar, LLC	National Grid Renewables	Glenwood, MN	2 GWh	Nov 2020	Dec 2024	Solar
Novel Stavem Solar LLC CSG	REA Investments, LLC	Glenwood, MN	2 GWh	Aug 2021	Dec 2024	Solar
Aquila Community Solar	National Grid Renewables	Glenwood, MN	2 GWh	Feb 2019	Dec 2024	Solar
Libra Community Solar	National Grid Renewables	Glenwood, MN	2 GWh	Oct 2018	Dec 2024	Solar
Lowry CSG2, LLC	Nautilus Solar Solutions	Glenwood, MN	2 GWh	Nov 2020	Dec 2024	Solar
Vega Community Solar	Vega Community Solar	Glenwood, MN	8 GWh	Sep 2017	Dec 2024	Solar
Lantana Solar, LLC	National Grid Renewables	Glenwood, MN	2 GWh	Dec 2020	Dec 2024	Solar
Armstrong Solar	ETCAP NES CS MN 06 LLC	Glenwood, MN	5 GWh	Feb 2018	Dec 2024	Solar
Cassiopeia Community Solar	National Grid Renewables	Glenwood, MN	2 GWh	Feb 2019	Dec 2024	Solar
USS Buckaroo Solar LLC CSG	Standard Solar	Glydon, MN	2 GWh	Sep 2020	Dec 2024	Solar
Spring Prairie Solar LLC CSG	United States Solar Corporation	Glyndon, MN	1 GWh	Apr 2024	Dec 2024	Solar
USS Maverick Solar LLC (CSG)	United States Solar Corporation	Good Thunder, MN	1 GWh	Nov 2023	Dec 2024	Solar
Sturgeon Garden	Sturgeon Garden LLC	Goodhue, MN	2 GWh	Nov 2023	Dec 2024	Solar
USS Wildcat Solar LLC	United States Solar Corporation	Goodhue, MN	2 GWh	Oct 2021	Dec 2024	Solar
USS Wells Creek Solar LLC	United States Solar Corporation	Goodhue, MN	2 GWh	Dec 2022	Dec 2024	Solar
Betcher CSG 1, LLC	Madison Energy Holdings LLC	Goodhue, MN	2 GWh	Oct 2020	Dec 2024	Solar
Betcher Community Solar Garden	Betcher CSG LLC	Goodhue, MN	2 GWh	Jul 2018	Dec 2024	Solar
Hoosier Wind Project LLC	AES Indiana	Goodland, IN	208 GWh	Oct 2009	Dec 2023	Wind
Green Cow Power	Green Cow Power LLC	Goshen, IN	13 GWh	Mar 2015	Dec 2024	Other Biomass Gas
ADC Varner	Entegrity Solar ADC, LLC	Gould, AR	9 GWh	Feb 2024	Dec 2024	Solar
POET Biorefining - Gowrie	POET Biorefining - Gowrie	Gowrie, IA	21 GWh	Oct 2018	Dec 2024	Natural Gas
Gowrie	Gowrie Municipal Utilities	Gowrie, IA	5 MWh	Dec 2012	Dec 2024	Distillate Fuel Oil
Graettinger	City of Graettinger - (IA)	Graettinger, IA	59 MWh	Jul 1957	Dec 2024	Distillate Fuel Oil
Louisiana Sugar Refining	Louisiana Sugar Refining LLC	Gramercy, LA	20 GWh	Aug 1930	Dec 2024	Natural Gas
Atlantic Alumina, Gramercy Operations	Atalco Gramercy LLC	Gramercy, LA	208 GWh	Jan 1958	Dec 2024	Natural Gas
Grand Blanc Generating Station	Energy Developments, Inc d/b/a EDL	Grand Blanc, MI	52 GWh	Jun 1994	Dec 2024	Landfill Gas
Grand Junction	City of Grand Junction - (IA)	Grand Junction, IA	4 MWh	Nov 1994	Dec 2024	Distillate Fuel Oil
Rippey Wind Farm	Greenbacker Renewable Energy Corporation	Grand Junction, IA	154 GWh	Jul 2012	Dec 2024	Wind
Delta Solar Power II	Delta Solar Power II, LLC	Grand Ledge, MI	26 GWh	Jun 2018	Dec 2024	Solar
Delta Solar Power I	Delta Solar Power I, LLC	Grand Ledge, MI	14 GWh	May 2018	Dec 2024	Solar
Grand River	Energy Developments, Inc d/b/a EDL	Grand Ledge, MI	7 GWh	Mar 1991	Dec 2024	Landfill Gas
Grand Marais	City of Grand Marais - (MN)	Grand Marais, MN	204 MWh	Jan 2004	Dec 2024	Distillate Fuel Oil
Mower County Wind Energy Center	Northern States Power Co - Minnesota	Grand Meadow, MN	343 GWh	Nov 2006	Dec 2024	Wind
Prairie Star Wind Farm	High Prairie Wind Farm II LLC	Grand Meadow, MN	298 GWh	Nov 2007	Dec 2024	Wind
Kent County Waste to Energy Facility	Kent County	Grand Rapids, MI	100 GWh	Sep 1989	Sep 2025	Non-biogenic Municipal Solid Waste : 54.8% Biogenic Municipal Solid Waste : 44.8%
Cascade Dam (MI)	Eagle Creek Renewable Energy, LLC	Grand Rapids, MI	3 GWh	Nov 1986	Dec 2024	Water
Bissell Solar and Battery Generator	Consumers Energy Co - (MI)	Grand Rapids, MI	432 MWh	Aug 2021	Dec 2024	Solar
USS Itasca Clean Energy Solar LLC	United States Solar Corporation	Grand Rapids, MN	4 GWh	Jul 2022	Dec 2024	Solar
Rapids Energy Center	ALLETE, Inc.	Grand Rapids, MN	40 GWh	Dec 1942	Dec 2024	Natural Gas : 77.3% Water : 22.7%
Prairie River	ALLETE, Inc.	Grand Rapids, MN	2 GWh	Mar 1920	Dec 2024	Water
Granite City Works	United States Steel Granite City Works	Granite City, IL	438 GWh	May 2010	Sep 2025	Natural Gas : 50.8% Purchased Steam : 49.2%
Crater Community Solar	Crater Community Solar	Granite Falls, MN	5 GWh	Nov 2017	Dec 2024	Solar
Granite Falls	City of Granite Falls - (MN)	Granite Falls, MN	3 GWh	Jul 1932	Dec 2024	Water
Putnam Solar 1	Pivot Energy	Granville, IL	2 GWh	Apr 2024	Dec 2024	Solar
Putnam Solar 1B	Pivot Energy	Granville, IL	2 GWh	May 2024	Dec 2024	Solar
Letts Creek Solar, LLC	AES Distributed Energy	Grass Lake, MI	28 GWh	Nov 2022	Dec 2024	Solar
Grayling Generating Station	NorthStar Clean Energy	Grayling, MI	165 GWh	Apr 1992	Dec 2024	Wood/Wood Waste Solids : 99.8%
Elk Wind Farm	Greenbacker Renewable Energy Corporation	Greeley, IA	178 GWh	Nov 2011	Dec 2024	Wind
Consumer Operations LLC	Georgia-Pacific Consumer Oper. Green Bay LLC	Green Bay, WI	235 GWh	Dec 1953	Sep 2025	Natural Gas
Pulliam	Wisconsin Public Service Corp	Green Bay, WI	109 GWh	Aug 1949	Sep 2025	Natural Gas
North Generation Plant	City of Greenfield - (IA)	Greenfield, IA	105 MWh	Dec 2001	Dec 2024	Distillate Fuel Oil
Arbor Hill Solar	MidAmerican Energy Co	Greenfield, IA	46 GWh	Dec 2021	Sep 2025	Solar
Downtown Generation Plant	City of Greenfield - (IA)	Greenfield, IA	58 MWh	Jun 2020	Dec 2024	Distillate Fuel Oil
Greenfield Wind	Greenfield Wind Power, LLC	Greenfield, IA	5 GWh	Jul 2012	Dec 2024	Wind
Meadow Ridge	Meadow Ridge Wind Energy, LLC	Greenfield, IA	5 GWh	Jun 2012	Dec 2024	Wind
Sky Volt	Sky Volt, LLC	Greenfield, IA	5 GWh	Jul 2012	Dec 2024	Wind
Arbor Hill Wind Farm	MidAmerican Energy Co	Greenfield, IA	1 TWh	Nov 2018	Sep 2025	Wind
Wolverine	Wolverine Wind Energy, LLC	Greenfield, IA	5 GWh	Sep 2010	Dec 2024	Wind
Decatur Co. Solar RES (IN)	Hoosier Energy R E C, Inc	Greensburg, IN	1 GWh	Aug 2017	Dec 2024	Solar
Gerald Andrus	Entergy Mississippi LLC	Greenville, MS	435 GWh	Dec 1974	Aug 2024	Natural Gas : 99.9%
Pivot Energy Minnesota Solar 10	Pivot Energy	Greenwald, MN	1 GWh	May 2023	Dec 2024	Solar
Hurricane Creek Lift Station	Johnson County Rural E M C	Greenwood, IN	143 MWh	Aug 2004	Dec 2024	Distillate Fuel Oil
Delta's Edge Solar	Cubico USA, LLC	Greenwood, MS	142 GWh	Oct 2023	Sep 2025	Solar
Griffith	Altus Power America Management, LLC	Griffith, IN	3 GWh	Feb 2013	Dec 2024	Solar
Venus Wind 3 LLC	Venus Wind 3 LLC	Grinnell, IA	10 GWh	Feb 2017	Dec 2024	Wind
Grinnell College	Azimuth 180 Solar Electric, LLC	Grinnell, IA	2 GWh	Mar 2024	Dec 2024	Solar
Green River Solar	Green River Solar, LLC	Guston, KY	200 GWh	-	Sep 2025	Solar
Cataract (MI)	Cataract Hydro, LLC	Gwinn, MI	5 GWh	Jan 1988	Dec 2024	Water
Leo Community Solar	National Grid Renewables	Hadley, MN	2 GWh	Nov 2018	Dec 2024	Solar
Platt Solar	Cannon River LLC	Hadley, MN	2 GWh	Dec 2022	Dec 2024	Solar
Trimbelle (Pierce Pepin)	Greenbacker Renewable Energy Corporation	Hager City, WI	3 GWh	Jan 2024	Dec 2024	Solar
Taft Cogeneration Facility	Occidental Chemical Corporation	Hahnville, LA	5 TWh	Jun 2002	Sep 2025	Natural Gas : 98.8% Other Gas : 1.2%
Halstad	City of Halstad - (MN)	Halstad, MN	11 MWh	Aug 2007	Dec 2024	Distillate Fuel Oil
Ashley-Chicot Solar	Today's Power, Inc.	Hamburg, AR	2 GWh	Jul 2018	Dec 2024	Solar
USS Martha Solar (CSG)	United States Solar Corporation	Hamburg, MN	2 GWh	Dec 2023	Dec 2024	Solar
Hampton MN GRE	SoCore Energy LLC	Hampton Township, MN	4 GWh	Sep 2018	Dec 2024	Solar
General Dynamics	Today's Power, Inc.	Hampton, AR	4 GWh	Oct 2020	Dec 2024	Solar
Franklin County Solar	MidAmerican Energy Co	Hampton, IA	12 GWh	Dec 2021	Dec 2024	Solar
POET Biorefining-Hanlontown, LLC	POET Biorefining-Hanlontown, LLC	Hanlontown, IA	12 GWh	Dec 2018	Dec 2024	Natural Gas
Big Turtle Wind Farm 2	DTE Electric Company	Harbor Beach, MI	107 GWh	Sep 2016	Dec 2024	Wind
Sigel Wind Park	DTE Electric Company	Harbor Beach, MI	257 GWh	Nov 2012	Sep 2025	Wind
Big Turtle Wind Farm, LLC	DTE Sustainable Generation	Harbor Beach, MI	70 GWh	Nov 2014	Dec 2024	Wind
Prairie Rose Wind Farm	Enel Green Power NA, Inc.	Hardwick, MN	414 GWh	Nov 2012	Sep 2025	Wind
Harlan	Harlan Municipal Utilities - (IA)	Harlan, IA	2 MWh	Jun 2001	Dec 2024	Distillate Fuel Oil
Osceola Windpower II	Osceola Windpower II	Harris, IA	197 GWh	Aug 2008	Sep 2025	Wind
Waste Management Northern Oaks LFGTE	WM Renewable Energy LLC	Harrison, MI	6 GWh	Oct 2010	Dec 2024	Landfill Gas
Bent Tree Wind Farm Phase 1	Wisconsin Power & Light Co	Hartland, MN	343 GWh	Jan 2011	Dec 2024	Wind
USS All In Solar LLC CSG	Standard Solar	Hartland, MN	2 GWh	Sep 2020	Dec 2024	Solar
USS Solar Way LLC CSG	Standard Solar	Hartland, MN	2 GWh	Oct 2020	Dec 2024	Solar
Alden Road Harvard Solar 1	Alden Road Harvard Solar 1, LLC	Harvard, IL	4 GWh	Nov 2020	Dec 2024	Solar
Hastings City Hydroelectric	Hastings Lock & Dam	Hastings, MN	13 GWh	Dec 1991	Dec 2024	Water
Hastings Solar	Enel Green Power NA, Inc.	Hastings, MN	9 GWh	Nov 2016	Dec 2024	Solar
GRE Marshan Solar	SoCore Energy LLC	Hastings, MN	2 GWh	Oct 2017	Dec 2024	Solar
Cannelton Hydroelectric Plant	American Mun Power-Ohio, Inc	Hawesville, KY	416 GWh	Dec 2015	Dec 2024	Water
Kentucky Mills	Domtar Paper Company LLC	Hawesville, KY	286 GWh	May 2001	Dec 2024	Black Liquor : 77.7% Wood/Wood Waste Solids : 22.3%
Dodge Renewables 2	Dodge Renewables 2, LLC	Hayfield, MN	2 GWh	Aug 2022	Dec 2024	Solar
Hayfield Solar I LLC CSG	REA Investments, LLC	Hayfield, MN	2 GWh	Jan 2021	Dec 2024	Solar
Hayfield Solar III LLC CSG	REA Investments, LLC	Hayfield, MN	2 GWh	Jan 2021	Dec 2024	Solar
Trego	Northern States Power Co - Minnesota	Hayward, WI	7 GWh	Dec 1926	Dec 2024	Water
Kramer Solar CSG	National Grid Renewables	Hector, MN	6 GWh	Nov 2017	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