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	Jan 2026
Annual Generation	656.9 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 \| 35.4% Coal \| 28.9% Wind \| 15.1% Nuclear \| 14% Solar \| 4.6% Water \| 1.5% Other Fuel \| 0.6%

Map of Midcontinent Independent System Operator, Inc.

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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
Vermillion Energy Facility	Duke Energy Ohio Inc	Cayuga, IN	728 GWh	May 2000	Dec 2024	Natural Gas
Cayuga	Duke Energy Indiana, LLC	Cayuga, IN	4 TWh	Sep 1970	Oct 2025	Bituminous Coal : 99.5%
Wheatland Generating Facility	Duke Energy Indiana, LLC	Wheatland, IN	131 GWh	May 2000	Dec 2024	Natural Gas
Noblesville	Duke Energy Indiana, LLC	Noblesville, IN	2 TWh	Aug 1950	Dec 2024	Natural Gas
Markland	Duke Energy Indiana, LLC	Florence, IN	299 GWh	Dec 1966	Dec 2024	Water
Edwardsport	Duke Energy Indiana, LLC	Edwardsport, IN	4 TWh	May 2013	Oct 2025	Coal-Derived Synthesis Gas : 46.6% Natural Gas : 44.4% Bituminous Coal : 9.1%
Gibson	Duke Energy Indiana, LLC	Owensville, IN	11 TWh	Mar 1975	Oct 2025	Bituminous Coal : 99.6%
Henry County	Duke Energy Indiana, LLC	New Castle, IN	345 GWh	Jun 2001	Dec 2024	Natural Gas
Camp Atterbury Microgrid Hybrid	Duke Energy Indiana, LLC	Edinburgh, IN	3 GWh	Oct 2019	Dec 2024	Solar
Crane Solar Facility	Duke Energy Indiana, LLC	Crane, IN	29 GWh	Dec 2016	Dec 2024	Solar
Tippecanoe Solar Power Plant	Duke Energy Indiana, LLC	West Lafayette, IN	3 GWh	Nov 2019	Nov 2024	Solar
Purdue CHP	Duke Energy Indiana, LLC	West Lafayette, IN	123 GWh	Feb 2022	Dec 2024	Natural Gas
Garden 1 Solar Park	DTE Sustainable Generation	Garden Township, MI	1 GWh	Aug 2016	Dec 2024	Solar
Garden 2 Solar Park	DTE Sustainable Generation	Garden Township, MI	2 GWh	May 2022	Dec 2024	Solar
Stoney Corners Wind Farm	DTE Sustainable Generation	McBain, MI	127 GWh	Nov 2009	Dec 2024	Wind
Heritage Garden Wind Farm I LLC	DTE Sustainable Generation	Garden, MI	75 GWh	Aug 2012	Dec 2024	Wind
Big Turtle Wind Farm, LLC	DTE Sustainable Generation	Harbor Beach, MI	70 GWh	Nov 2014	Dec 2024	Wind
Greenwood Solar Farm	DTE Electric Company	Avoca, MI	2 GWh	Dec 2015	Oct 2025	Solar
Domino Farms Solar	DTE Electric Company	Ann Arbor, MI	1 GWh	Aug 2015	Oct 2025	Solar
Fairbanks Wind Park	DTE Electric Company	Garden, MI	197 GWh	Dec 2021	Oct 2025	Wind
O'Shea Solar Farm	DTE Electric Company	Detroit, MI	3 GWh	Jun 2017	Dec 2024	Solar
Isabella Wind Park	DTE Electric Company	Rosebush, MI	844 GWh	May 2021	Oct 2025	Wind
Gratiot Wind Park	DTE Electric Company	Breckenridge, MI	223 GWh	Oct 2011	Oct 2025	Wind
Turrill Solar Farm	DTE Electric Company	Lapeer, MI	25 GWh	Apr 2017	Dec 2024	Solar
Polaris Wind Park	DTE Electric Company	North Star Township, MI	443 GWh	Apr 2020	Oct 2025	Wind
Demille Solar Farm	DTE Electric Company	Lapeer, MI	36 GWh	Apr 2017	Oct 2025	Solar
McKinley Wind Park	DTE Electric Company	Pigeon, MI	51 GWh	Nov 2012	Oct 2025	Wind
Echo Wind Park	DTE Electric Company	Elkton, MI	569 GWh	Dec 2013	Oct 2025	Wind
Blue Water Energy Center	DTE Electric Company	East China, MI	8 TWh	May 2022	Oct 2025	Natural Gas
Brookfield	DTE Electric Company	Pigeon, MI	250 GWh	Jan 2014	Oct 2025	Wind
Pine River Wind Park	DTE Electric Company	Shepherd, MI	353 GWh	Feb 2019	Oct 2025	Wind
Sigel Wind Park	DTE Electric Company	Harbor Beach, MI	250 GWh	Nov 2012	Oct 2025	Wind
Dearborn Energy Center	DTE Electric Company	Dearborn, MI	247 GWh	Nov 2019	Dec 2024	Natural Gas
Minden Wind Park	DTE Electric Company	Minden City, MI	109 GWh	Nov 2012	Oct 2025	Wind
Sauk Solar Park	DTE Electric Company	Union City, MI	188 GWh	-	Oct 2025	Solar
Pine River Solar Park	DTE Electric Company	Alma, MI	67 GWh	-	Oct 2025	Solar
Big Turtle Wind Farm 2	DTE Electric Company	Harbor Beach, MI	107 GWh	Sep 2016	Dec 2024	Wind
Polaris Solar Park	DTE Electric Company	Ashley, MI	46 GWh	-	Oct 2025	Solar
Meridian Wind Park	DTE Electric Company	Merrill, MI	489 GWh	Mar 2023	Oct 2025	Wind
Greenwood (MI)	DTE Electric Company	Avoca, MI	1 TWh	Jun 1979	Oct 2025	Natural Gas
Delray	DTE Electric Company	Detroit, MI	91 GWh	Jan 2000	Nov 2024	Natural Gas
Dean	DTE Electric Company	East China, MI	770 GWh	May 2002	Dec 2024	Natural Gas
Fermi	DTE Electric Company	Frenchtown Twp, MI	10 TWh	Mar 1966	Oct 2025	Nuclear
Hancock	DTE Electric Company	Commerce Twp, MI	9 GWh	Mar 1966	Dec 2024	Natural Gas
Monroe (MI)	DTE Electric Company	Monroe, MI	16 TWh	Oct 1969	Oct 2025	Subbituminous Coal : 74.1% Bituminous Coal : 16.5% Petroleum Coke : 9.1%
Belle River	DTE Electric Company	China Twp, MI	8 TWh	Oct 1981	Sep 2025	Subbituminous Coal : 93.6% Natural Gas : 6.0%
Northeast (MI)	DTE Electric Company	Warren, MI	6 GWh	Apr 1966	Dec 2024	Natural Gas : 84.7% Distillate Fuel Oil : 15.3%
St Clair	DTE Electric Company	East China Twp, MI	4 GWh	Jul 1953	Oct 2025	Natural Gas
Wilmot	DTE Electric Company	Kingston Twp, MI	341 MWh	Nov 1968	Oct 2025	Distillate Fuel Oil
Renaissance Power Plant	DTE Electric Company	Carson City, MI	1 TWh	Feb 2002	Oct 2025	Natural Gas
DSI Don Solar	DSI Don Solar LLC	Renville, MN	579 MWh	Jun 2024	Dec 2024	Solar
Dressor Plains Solar, LLC	Dressor Plains Solar, LLC	Herrick, IL	230 GWh	Aug 2021	Oct 2025	Solar
Dow St Charles Operations	Dow Chemical Co - St Charles	Taft, LA	2 TWh	Nov 1996	Oct 2025	Natural Gas : 99.2% Other Gas : 0.8%
LaO Energy Systems	Dow Chemical Co	Plaquemine, LA	1 TWh	May 1958	Dec 2024	Natural Gas : 84.1% Other Gas : 15.9%
Plaquemine Cogeneration Plant	Dow Chemical Co	Plaquemine, LA	6 TWh	Feb 2004	Oct 2025	Natural Gas : 97.7% Other Gas : 2.3%
Double Back Diamond	Double Back Diamond Solar Power, LLC	Virden, IL	933 GWh	Oct 2024	Oct 2025	Solar
Domtar Paper Company Rothschild	Domtar Paper Company Rothschild	Rothschild, WI	3 GWh	Dec 1909	May 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%
Georgia-Pacific Corp - Nekoosa Mill	Domtar Industries Inc	Nekoosa, WI	184 GWh	Dec 1911	Oct 2025	Black Liquor : 43.1% Natural Gas : 42.3% Water : 14.6%
Port Edwards Mill	Domtar Industries Inc	Port Edwards, WI	40 GWh	Dec 1912	Oct 2025	Water
Dodge Renewables 2	Dodge Renewables 2, LLC	Hayfield, MN	2 GWh	Aug 2022	Dec 2024	Solar
Dodge Renewables 1	Dodge Renewables 1, LLC	Dodge Center, MN	2 GWh	Jul 2022	Dec 2024	Solar
Dodge Holdco Solar CSG	Dodge Holdco LLC	Kasson, MN	8 GWh	Jun 2017	Dec 2024	Solar
Schultz CSG	DG Minnesota CSG, LLC	Webster, MN	3 GWh	Oct 2018	Dec 2024	Solar
Tiller CSG	DG Minnesota CSG, LLC	Clear Lake, MN	8 GWh	Nov 2018	Dec 2024	Solar
Haven Solar Project CSG	DG Minnesota CSG, LLC	Saint Cloud, MN	5 GWh	Jun 2019	Dec 2024	Solar
Hammer CSG	DG Minnesota CSG, LLC	Clear Lake, MN	6 GWh	Nov 2018	Dec 2024	Solar
Cottage Grove Project CSG	DG Minnesota CSG, LLC	Cottage Grove, MN	7 GWh	Sep 2018	Dec 2024	Solar
Big Lake Project CSG	DG Minnesota CSG, LLC	Big Lake, MN	9 GWh	May 2018	Dec 2024	Solar
Monticello Project CSG	DG Minnesota CSG, LLC	Monticello, MN	8 GWh	Oct 2018	Dec 2024	Solar
Scandia CSG	DG Minnesota CSG, LLC	Scandia, MN	9 GWh	Dec 2017	Dec 2024	Solar
Held Solar Project	DG Minnesota CSG, LLC	Waite Park, MN	8 GWh	Feb 2019	Dec 2024	Solar
Hormel CSG Solar	DG Central 1, LLC	Montevideo, MN	2 GWh	Nov 2022	Dec 2024	Solar
Grand Casino Hinckley Solar	DG Central 1, LLC	Hinckley, MN	6 GWh	Apr 2022	Dec 2024	Solar
DG AMP Solar Coldwater	DG AMP Solar, LLC	Coldwater, MI	2 GWh	Jan 2018	Dec 2024	Solar
Des Moines Wastewater Reclamation Fac	Des Moines Metro WRF	Des Moines, IA	71 MWh	Jun 1991	Dec 2024	Natural Gas
DePue Holdings, LLC	DePue Holdings, LLC	DePue, IL	37 GWh	Jan 2023	Dec 2024	Solar
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
Delphinus Community Solar	Delphinus Community Solar	Sauk Rapids, MN	3 GWh	Feb 2018	Dec 2024	Solar
Delano	Delano Municipal Utilities	Delano, MN	52 MWh	Sep 1946	Dec 2024	Distillate Fuel Oil
Deerfield Wind Energy, LLC	Deerfield Wind Energy, LLC	Kinde, MI	472 GWh	Jan 2017	Oct 2025	Wind
Deerfield Wind Energy 2	Deerfield Wind Energy 2, LLC	Port Hope, MI	308 GWh	Feb 2023	Oct 2025	Wind
Decorative Panels Intl	Decorative Panels International, Inc.	Alpena, MI	43 GWh	Oct 1957	Dec 2023	Natural Gas : 79.6% Wood/Wood Waste Solids : 20.4%
Dearborn Industrial Generation	Dearborn Industrial Gen Inc	Dearborn, MI	4 TWh	May 1999	Oct 2025	Natural Gas : 88.1% Blast Furnace Gas : 11.9%
Davenport Water Pollution Control Plant	Davenport City of	Davenport, IA	6 GWh	Apr 1995	Dec 2024	Other Biomass Gas : 90.0% Natural Gas : 10.0%
Dane County Solar LLC	Dane County Solar LLC	Cottage Grove, WI	33 GWh	May 2023	Dec 2024	Solar
Flambeau Hydroelectric Station	Dairyland Power Coop	Ladysmith, WI	62 GWh	Dec 1950	Dec 2024	Water
RockGen Energy Center	Dairyland Power Coop	Cambridge, WI	500 GWh	May 2001	Oct 2025	Natural Gas : 99.1% Distillate Fuel Oil : 0.9%
John P Madgett	Dairyland Power Coop	Alma, WI	1 TWh	Oct 1979	Oct 2025	Subbituminous Coal : 99.8%
Elk Mound	Dairyland Power Coop	Elk Mound, WI	25 GWh	May 2001	Dec 2024	Natural Gas : 99.5% Distillate Fuel Oil : 0.5%
Breezewood	Cypress Creek Renewables	Bloomington, IL	732 MWh	Aug 2024	Dec 2024	Solar
CF Novel Solar CSG Gardens Five, LLC	Cypress Creek Renewables	Waseca, MN	6 GWh	Nov 2017	Dec 2024	Solar
CF Novel Solar CSG Gardens Two, LLC	Cypress Creek Renewables	Minnesota Lake, MN	3 GWh	Nov 2017	Dec 2024	Solar
Empire Solar	Cypress Creek Renewables	Farmington, MN	6 GWh	Nov 2016	Dec 2024	Solar
Staunton	Cypress Creek Renewables	Brazil, IN	7 GWh	Nov 2018	Dec 2024	Solar
CF Novel Solar CSG Gardens Eleven, LLC	Cypress Creek Renewables	Mankato, MN	5 GWh	Nov 2017	Dec 2024	Solar
CF Novel Solar CSG Gardens Seven, LLC	Cypress Creek Renewables	Clear Lake, MN	5 GWh	Nov 2017	Dec 2024	Solar
Blue Lake Solar	Cypress Creek Renewables	Shakopee, MN	4 GWh	Nov 2016	Dec 2024	Solar
WrightSun CSG, LLC	Cypress Creek Renewables	St. Michael, MN	6 GWh	Dec 2017	Dec 2024	Solar

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#60	Alcoa Power Generating, Inc. - Yadkin Division	643.5 GWh	4
#27	Associated Electric Cooperative, Inc.	23.9 TWh	47
#13	Duke Energy Carolinas	111.6 TWh	565
#52	Duke Energy Progress West	4.3 TWh	10
#24	Louisville Gas and Electric Company and Kentucky Utilities Company	34.2 TWh	25
#1	PJM Interconnection, LLC	872.9 TWh	2,465
#6	Southern Company Services, Inc. - Trans	249.9 TWh	417
#5	Southwest Power Pool	300.6 TWh	835
#51	Southwestern Power Administration	5.0 TWh	34
#9	Tennessee Valley Authority	161.0 TWh	204

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#1	PJM Interconnection, LLC	872.9 TWh	2,465
#2	Midcontinent Independent System Operator, Inc.	656.9 TWh	2,831
#3	Electric Reliability Council of Texas, Inc.	484.7 TWh	1,313
#5	Southwest Power Pool	300.6 TWh	835
#6	Southern Company Services, Inc. - Trans	249.9 TWh	417
#7	California Independent System Operator	184.8 TWh	2,075
#9	Tennessee Valley Authority	161.0 TWh	204
#10	Florida Power & Light Co.	149.6 TWh	187
#12	New York Independent System Operator	132.6 TWh	1,211
#13	Duke Energy Carolinas	111.6 TWh	565