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
RC Thomas Hydroelectric Project	East Texas Electric Coop, Inc	Livingston, TX	114 GWh	Jun 2020	May 2026	Water
San Jacinto County Peaking Facility	East Texas Electric Coop, Inc	Shepherd, TX	287 GWh	Jun 2001	Dec 2025	Natural Gas
Little Quinnesec Falls Hydro Project	Eagle Creek Renewable Energy, LLC	Niagara, WI	61 GWh	Nov 1900	Dec 2025	Water
Dayton Hydro	Eagle Creek Renewable Energy, LLC	Ottawa, IL	10 GWh	Dec 1924	Dec 2025	Water
Four Mile Hydropower Project	Eagle Creek Renewable Energy, LLC	Alpena, MI	8 GWh	Aug 1990	Dec 2025	Water
Oconto Falls Upper	Eagle Creek Renewable Energy, LLC	Oconto Falls, WI	12 GWh	Dec 1917	Dec 2025	Water
Ninth Street Hydropower Project	Eagle Creek Renewable Energy, LLC	Alpena, MI	6 GWh	Aug 1990	Dec 2025	Water
Norway Point Hydropower Project	Eagle Creek Renewable Energy, LLC	Alpena, MI	13 GWh	Aug 1990	Dec 2025	Water
Oconto Falls Lower	Eagle Creek Renewable Energy, LLC	Oconto Falls, WI	6 GWh	Dec 1970	Dec 2025	Water
French Landing Dam	Eagle Creek Renewable Energy, LLC	Belleville, MI	5 GWh	Nov 1988	Dec 2025	Water
Cascade Dam (MI)	Eagle Creek Renewable Energy, LLC	Grand Rapids, MI	4 GWh	Nov 1986	Dec 2025	Water
Ada Dam	Eagle Creek Renewable Energy, LLC	Ada, MI	2 GWh	Feb 1984	Dec 2025	Water
Sartell Dam	Eagle Creek Renewable Energy, LLC	Sartell, MN	30 GWh	Feb 1985	Dec 2025	Water
Menominee Mill Marinette	Eagle Creek Renewable Energy, LLC	Menominee, MI	10 GWh	Dec 1923	May 2026	Water
Park Mill	Eagle Creek Renewable Energy, LLC	Marinette, WI	4 GWh	Dec 1919	Dec 2025	Water
Rockton	Eagle Creek Renewable Energy, LLC	Rockton, IL	6 GWh	Dec 1928	Dec 2025	Water
E. Goenner Project CSG	E. Goenner Community Solar LLC	Clear Lake, MN	1 GWh	Nov 2019	Dec 2025	Solar
Baldwin Energy Complex	Dynegy Midwest Generation Inc	Baldwin, IL	6 TWh	Jun 1970	May 2026	Subbituminous Coal : 99.7%
Dunns Bridge I Solar	Dunns Bridge Solar Center LLC	Wheatfield, IN	453 GWh	May 2023	May 2026	Solar
Dunns Bridge II Solar	Dunns Bridge II Solar and Storage Generation LLC	San Pierre, IN	774 GWh	Dec 2024	May 2026	Solar
Ledyard Windpower, LLC	Duke Energy Renewables Services	Lakota, IA	603 GWh	Nov 2022	May 2026	Wind
Wildflower Solar, LLC (MS)	Duke Energy Renewables Services	DeSoto, MS	200 GWh	Apr 2024	May 2026	Solar
Shirley Wind	Duke Energy Renewables Services	Denmark, WI	57 GWh	Oct 2010	Dec 2025	Wind
Vermillion Energy Facility	Duke Energy Ohio Inc	Cayuga, IN	422 GWh	May 2000	Dec 2025	Natural Gas
Wheatland Generating Facility	Duke Energy Indiana, LLC	Wheatland, IN	153 GWh	May 2000	Dec 2025	Natural Gas
Edwardsport	Duke Energy Indiana, LLC	Edwardsport, IN	4 TWh	May 2013	May 2026	Coal-Derived Synthesis Gas : 49.4% Natural Gas : 40.8% Bituminous Coal : 9.8%
Gibson	Duke Energy Indiana, LLC	Owensville, IN	11 TWh	Mar 1975	May 2026	Bituminous Coal : 99.6%
Cayuga	Duke Energy Indiana, LLC	Cayuga, IN	4 TWh	Sep 1970	May 2026	Bituminous Coal : 99.3%
Markland	Duke Energy Indiana, LLC	Florence, IN	253 GWh	Dec 1966	Dec 2025	Water
Noblesville	Duke Energy Indiana, LLC	Noblesville, IN	2 TWh	Aug 1950	Dec 2025	Natural Gas
Henry County	Duke Energy Indiana, LLC	New Castle, IN	275 GWh	Jun 2001	Dec 2025	Natural Gas
Crane Solar Facility	Duke Energy Indiana, LLC	Crane, IN	27 GWh	Dec 2016	Dec 2025	Solar
Camp Atterbury Microgrid Hybrid	Duke Energy Indiana, LLC	Edinburgh, IN	2 GWh	Oct 2019	Dec 2025	Solar
Tippecanoe Solar Power Plant	Duke Energy Indiana, LLC	West Lafayette, IN	2 GWh	Nov 2019	Dec 2025	Solar
Purdue CHP	Duke Energy Indiana, LLC	West Lafayette, IN	125 GWh	Feb 2022	Dec 2025	Natural Gas
Garden 2 Solar Park	DTE Sustainable Generation	Garden Township, MI	3 GWh	May 2022	Dec 2025	Solar
Garden 1 Solar Park	DTE Sustainable Generation	Garden Township, MI	1 GWh	Aug 2016	Dec 2025	Solar
Stoney Corners Wind Farm	DTE Sustainable Generation	McBain, MI	125 GWh	Nov 2009	Dec 2025	Wind
Heritage Garden Wind Farm I LLC	DTE Sustainable Generation	Garden, MI	71 GWh	Aug 2012	Dec 2025	Wind
Big Turtle Wind Farm, LLC	DTE Sustainable Generation	Harbor Beach, MI	76 GWh	Nov 2014	Dec 2025	Wind
Demille Solar Farm	DTE Electric Company	Lapeer, MI	37 GWh	Apr 2017	May 2026	Solar
Isabella Wind Park	DTE Electric Company	Rosebush, MI	809 GWh	May 2021	May 2026	Wind
Greenwood Solar Farm	DTE Electric Company	Avoca, MI	2 GWh	Dec 2015	May 2026	Solar
O'Shea Solar Farm	DTE Electric Company	Detroit, MI	3 GWh	Jun 2017	Dec 2025	Solar
Domino Farms Solar	DTE Electric Company	Ann Arbor, MI	844 MWh	Aug 2015	May 2026	Solar
Dearborn Energy Center	DTE Electric Company	Dearborn, MI	237 GWh	Nov 2019	Dec 2025	Natural Gas
Polaris Wind Park	DTE Electric Company	North Star Township, MI	455 GWh	Apr 2020	May 2026	Wind
Blue Water Energy Center	DTE Electric Company	East China, MI	8 TWh	May 2022	May 2026	Natural Gas
Echo Wind Park	DTE Electric Company	Elkton, MI	566 GWh	Dec 2013	May 2026	Wind
Minden Wind Park	DTE Electric Company	Minden City, MI	110 GWh	Nov 2012	May 2026	Wind
McKinley Wind Park	DTE Electric Company	Pigeon, MI	51 GWh	Nov 2012	May 2026	Wind
Turrill Solar Farm	DTE Electric Company	Lapeer, MI	20 GWh	Apr 2017	Dec 2025	Solar
Brookfield	DTE Electric Company	Pigeon, MI	247 GWh	Jan 2014	May 2026	Wind
Pine River Wind Park	DTE Electric Company	Shepherd, MI	380 GWh	Feb 2019	May 2026	Wind
Fairbanks Wind Park	DTE Electric Company	Garden, MI	182 GWh	Dec 2021	May 2026	Wind
Sigel Wind Park	DTE Electric Company	Harbor Beach, MI	246 GWh	Nov 2012	May 2026	Wind
Big Turtle Wind Farm 2	DTE Electric Company	Harbor Beach, MI	104 GWh	Sep 2016	Dec 2025	Wind
Fish Creek Solar Park	DTE Electric Company	Greenville, MI	49 GWh	-	May 2026	Solar
Meridian Wind Park	DTE Electric Company	Merrill, MI	479 GWh	Mar 2023	May 2026	Wind
Mission Road Solar Park	DTE Electric Company	Rosebush, MI	60 GWh	-	May 2026	Solar
Sauk Solar Park	DTE Electric Company	Union City, MI	228 GWh	Dec 2024	May 2026	Solar
Pine River Solar Park	DTE Electric Company	Alma, MI	126 GWh	May 2025	May 2026	Solar
Polaris Solar Park	DTE Electric Company	Ashley, MI	123 GWh	Jun 2025	May 2026	Solar
Northeast (MI)	DTE Electric Company	Warren, MI	15 GWh	Apr 1966	Dec 2025	Natural Gas : 86.8% Distillate Fuel Oil : 13.2%
Gratiot Wind Park	DTE Electric Company	Breckenridge, MI	214 GWh	Oct 2011	May 2026	Wind
Wilmot	DTE Electric Company	Kingston Twp, MI	2 GWh	Nov 1968	Apr 2026	Distillate Fuel Oil
Superior	DTE Electric Company	Superior Twp, MI	789 MWh	Sep 1966	Dec 2025	Distillate Fuel Oil
St Clair	DTE Electric Company	East China Twp, MI	7 GWh	Jul 1953	May 2026	Distillate Fuel Oil : 52.4% Natural Gas : 47.6%
Putnam (MI)	DTE Electric Company	Mayville, MI	129 MWh	May 1971	Dec 2025	Distillate Fuel Oil
Renaissance Power Plant	DTE Electric Company	Carson City, MI	1 TWh	Feb 2002	May 2026	Natural Gas
Placid 12	DTE Electric Company	Clarkston, MI	243 MWh	Oct 1970	Dec 2025	Distillate Fuel Oil
Colfax	DTE Electric Company	Fowlerville, MI	146 MWh	Oct 1969	Dec 2025	Distillate Fuel Oil
Monroe (MI)	DTE Electric Company	Monroe, MI	16 TWh	Oct 1969	May 2026	Subbituminous Coal : 75.2% Bituminous Coal : 15.7% Petroleum Coke : 8.9%
Hancock	DTE Electric Company	Commerce Twp, MI	20 GWh	Mar 1966	Dec 2025	Natural Gas
Dean	DTE Electric Company	East China, MI	705 GWh	May 2002	Dec 2025	Natural Gas
Greenwood (MI)	DTE Electric Company	Avoca, MI	2 TWh	Jun 1979	May 2026	Natural Gas
Fermi	DTE Electric Company	Frenchtown Twp, MI	8 TWh	Mar 1966	May 2026	Nuclear
Delray	DTE Electric Company	Detroit, MI	145 GWh	Jan 2000	Dec 2025	Natural Gas
Belle River	DTE Electric Company	China Twp, MI	5 TWh	Oct 1981	May 2026	Subbituminous Coal : 78.5% Natural Gas : 21.1%
DSI Julie Solar	DSI Julie Solar LLC	Cold Spring, MN	2 GWh	Nov 2024	Dec 2025	Solar
DSI Don Solar	DSI Don Solar LLC	Renville, MN	2 GWh	Jun 2024	Dec 2025	Solar
Dressor Plains Solar, LLC	Dressor Plains Solar, LLC	Herrick, IL	229 GWh	Aug 2021	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%
Plaquemine Cogeneration Plant	Dow Chemical Co	Plaquemine, LA	6 TWh	Feb 2004	May 2026	Natural Gas : 97.4% Other Gas : 2.6%
LaO Energy Systems	Dow Chemical Co	Plaquemine, LA	1 TWh	May 1958	Dec 2024	Natural Gas : 84.1% Other Gas : 15.9%
Double Back Diamond	Double Back Diamond Solar Power, LLC	Virden, IL	961 GWh	Oct 2024	May 2026	Solar
Domtar Paper Company Rothschild	Domtar Paper Company Rothschild	Rothschild, WI	524 MWh	Dec 1909	Dec 2025	Water
Kentucky Mills	Domtar Paper Company LLC	Hawesville, KY	338 GWh	May 2001	Dec 2025	Black Liquor : 75.4% Wood/Wood Waste Solids : 23.7% Natural Gas : 0.8%
Port Edwards Mill	Domtar Industries Inc	Port Edwards, WI	37 GWh	Dec 1912	May 2026	Water
Georgia-Pacific Corp - Nekoosa Mill	Domtar Industries Inc	Nekoosa, WI	160 GWh	Dec 1911	May 2026	Natural Gas : 43.1% Black Liquor : 41.5% Water : 15.5%
Dodge Renewables 2	Dodge Renewables 2, LLC	Hayfield, MN	2 GWh	Aug 2022	Dec 2025	Solar
Dodge Renewables 1	Dodge Renewables 1, LLC	Dodge Center, MN	2 GWh	Jul 2022	Dec 2025	Solar
Dodge Holdco Solar CSG	Dodge Holdco LLC	Kasson, MN	7 GWh	Jun 2017	Dec 2025	Solar
DIVOCSG 14 LLC	DIVOCSG 14 LLC	Wabasha, MN	862 MWh	May 2025	Dec 2025	Solar
DIVOCSG 13	DIVOCSG 13 LLC	Wabasha, MN	1 GWh	Mar 2025	Dec 2025	Solar
Towanda	Dimension Energy LLC	Shirley, IL	7 MWh	Nov 2025	Dec 2025	Solar
Medanos Solar LLC	Dimension Energy LLC	Homer, IL	96 MWh	Nov 2025	Dec 2025	Solar
Drummer Creek I Solar LLC	Dimension Energy LLC	Gibson City, IL	170 MWh	Nov 2025	Dec 2025	Solar
South Belleville Solar, LLC	Dimension Energy LLC	Smithton Township, IL	385 MWh	Oct 2025	Dec 2025	Solar
DG Green Arrow	DG Green Arrow LLC	Pipestone, MN	2 GWh	Feb 2025	Dec 2025	Solar

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