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	May 2025
Annual Generation	645.5 TWh
Power Plants	2,653
Utilities	1,202
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 \| 36.9% Coal \| 28% Wind \| 15.6% Nuclear \| 14.5% Solar \| 3% Water \| 1.7% Other Fuel \| 0.5%

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
Sherco Solar I	Northern States Power Co - Minnesota	Clear Lake, MN	66 GWh	-	Feb 2025	Solar
Prairie Ronde Solar Farm	Lightsource Renewable Energy Asset Management, LLC	Opelousas, LA	46 GWh	-	Feb 2025	Solar
Prescott Wind Farm	Prescott Wind Energy LLC	Prescott, IA	81 GWh	-	Feb 2025	Wind
Salt Creek Township Solar, LLC	Birch Creek Power, LLC	Mason City, IL	12 GWh	-	Feb 2025	Solar
Earp Solar, LLC	Birch Creek Power, LLC	Monmouth, IL	44 GWh	-	Feb 2025	Solar
Prairie Mist Solar	Prairie Mist Solar Project, LLC	Montrose, AR	71 GWh	-	Feb 2025	Solar
Elizabeth Solar Plant	Horus Louisiana 1, LLC	Pitkin, LA	139 GWh	-	Feb 2025	Solar
West Memphis Solar, LLC	West Memphis Solar, LLC	Crawfordsville, AR	58 GWh	-	Feb 2025	Solar
Crooked Lake Solar, LLC	Crooked Lake Solar, LLC	Blytheville, AR	306 GWh	-	Feb 2025	Solar
Delta Wind Farm (MS)	AES Clean Energy	Dundee, MS	449 GWh	-	Feb 2025	Wind
Duane Arnold Solar I (50 MW)	Interstate Power and Light Co	Palo, IA	87 GWh	-	Feb 2025	Solar
Bayou Galion Solar Project	Bayou Galion Solar Project, LLC	Mer Rouge, LA	49 GWh	-	Feb 2025	Solar
Louise Solar	National Grid Renewables	Taopi, MN	12 GWh	-	Feb 2025	Solar
Harvest Gold Solar	Harvest Gold Solar Power, LLC	Indianola, MS	107 GWh	-	Feb 2025	Solar
Cavalry Solar Hybrid	Cavalry Energy Center LLC	Monon, IN	303 GWh	-	Feb 2025	Solar
Oxbow Solar 1	Lightsource Renewable Energy Asset Management, LLC	New Roads, LA	368 GWh	-	Feb 2025	Solar
River Fork Solar, LLC	River Fork Solar, LLC	Albion, MI	48 GWh	-	Feb 2025	Solar
Hardy Hills Solar Energy LLC	Hardy Hills Solar LLC	Frankfort, IN	319 GWh	-	Feb 2025	Solar
Kimmel Road Solar, LLC	Birch Creek Development	Du Quoin, IL	29 GWh	-	Feb 2025	Solar
RIchland Township Solar, LLC	Birch Creek Development	Washburn, IL	5 GWh	-	Feb 2025	Solar
Twin Lakes Solar LLC	Twin Lakes Solar LLC	Monticello, IN	54 GWh	-	Feb 2025	Solar
Envoy Solar, LLC	Birch Creek Development	Mexico, MO	427 MWh	-	Feb 2025	Solar
Woodruff County Solar	Arkansas Electric Coop Corp	Augusta, AR	72 GWh	-	Feb 2025	Solar
Creston Solar (50 MW)	Interstate Power and Light Co	Creston, IA	24 GWh	-	Feb 2025	Solar
Fillmore County Solar Project	National Grid Renewables	Spring Valley, MN	11 GWh	-	Feb 2025	Solar
Paris Solar	Wisconsin Electric Power Co	Union Grove, WI	33 GWh	-	Feb 2025	Solar
Heartland Farms	Consumers Energy Co - (MI)	Middleton, MI	422 GWh	-	Feb 2025	Wind
Ragsdale Solar LLC	Ragsdale Solar, LLC	Canton, MS	49 GWh	-	Feb 2025	Solar
Blue Bird Solar, LLC	Blue Bird Solar, LLC	Warrenton, MO	18 GWh	-	Feb 2025	Solar
Dunns Bridge II Solar	Dunns Bridge II Solar and Storage Generation LLC	San Pierre, IN	71 GWh	-	Feb 2025	Solar
Hickory Solar	Hickory Solar LLC	Jerseyville, IL	41 GWh	-	Feb 2025	Solar
Driver Solar	Lightsource Renewable Energy Asset Management, LLC	Osceola, AR	100 GWh	-	Feb 2025	Solar
Duane Arnold Solar II (150MW)	Interstate Power and Light Co	Palo, IA	35 GWh	-	Feb 2025	Solar
Liberty County Solar Project	Liberty County Solar Project, LLC	Dayton, TX	76 GWh	-	Feb 2025	Solar
Pearl River Solar Park LLC	Pearl River Solar Park, LLC	Morton, MS	223 GWh	-	Feb 2025	Solar
Sunlight Road Solar	Sunlight Road Solar, LLC	Franklinton, LA	26 GWh	-	Feb 2025	Solar
Walnut Bend Solar Station PV	Walnut Bend Solar Station	Moro, AR	71 GWh	-	Feb 2025	Solar
Double Back Diamond	Double Back Diamond Solar Power, LLC	Virden, IL	210 GWh	-	Feb 2025	Solar
Wever Solar (150MW)	Interstate Power and Light Co	Wever, IA	47 GWh	-	Feb 2025	Solar
Panther Creek Wind Project	Greenbacker Renewable Energy Corporation	Pittsfield, IL	20 GWh	-	Feb 2025	Wind
Wildflower Solar, LLC (MS)	Duke Energy Renewables Services	DeSoto, MS	144 GWh	-	Feb 2025	Solar
Indiana Crossroads Wind Farm II	Indiana Crossroads Wind Farm II LLC	Wolcott, IN	219 GWh	-	Feb 2025	Wind
Maple Flats	Invenergy Services LLC	Louisville, IL	78 GWh	-	Feb 2025	Solar
Altona Solar, LLC	Birch Creek Power, LLC	Centralia, MO	29 GWh	-	Feb 2025	Solar
Grant County	Wisconsin Power & Light Co	Town of Potosi, WI	235 GWh	-	Feb 2025	Solar
Whiting	Consolidated Water Power Co	Whiting, WI	21 GWh	Dec 1890	Dec 2023	Water
Biron	Consolidated Water Power Co	Biron, WI	24 GWh	Dec 1895	Dec 2023	Water
Little Quinnesec Falls Hydro Project	Eagle Creek Renewable Energy, LLC	Niagara, WI	59 GWh	Nov 1900	Dec 2023	Water
Apple River	Northern States Power Co - Minnesota	Somerset, WI	11 GWh	Dec 1900	Dec 2023	Water
Edison Sault	Cloverland Electric Co-op	Sault Ste. Marie, MI	234 GWh	Jun 1901	Dec 2023	Water
Wisconsin Rapids	Consolidated Water Power Co	Wisconsin Rapids, WI	41 GWh	Dec 1902	Dec 2023	Water
Norway (MI)	City of Norway	Norway, MI	28 GWh	May 1905	Dec 2023	Water
Little Falls (MN)	ALLETE, Inc.	Little Falls, MN	27 GWh	Dec 1905	Dec 2023	Water
Webber	Consumers Energy Co - (MI)	Lyons, MI	11 GWh	Dec 1906	Dec 2023	Water
White River (WI)	Northern States Power Co - Minnesota	Ashland, WI	5 GWh	Dec 1906	Dec 2023	Water
Thomson	ALLETE, Inc.	Carlton, MN	259 GWh	Dec 1906	Dec 2023	Water
Croton	Consumers Energy Co - (MI)	Newaygo, MI	20 GWh	Dec 1906	Dec 2023	Water
Domtar Paper Company Rothschild	Domtar Paper Company Rothschild	Rothschild, WI	3 GWh	Dec 1909	Dec 2023	Water
Cedar Falls (WI)	Northern States Power Co - Minnesota	Menomonie, WI	33 GWh	Dec 1909	Dec 2023	Water
St Croix Falls	Northern States Power Co - Minnesota	St Croix Falls, WI	83 GWh	Dec 1909	Dec 2023	Water
High Falls (WI)	Wisconsin Public Service Corp	Town of Stephenson, WI	16 GWh	Jul 1910	Dec 2023	Water
Cooke	Consumers Energy Co - (MI)	Oscoda, MI	26 GWh	Dec 1910	Dec 2023	Water
Five Channels	Consumers Energy Co - (MI)	Oscoda, MI	22 GWh	Dec 1911	Dec 2023	Water
Georgia-Pacific Corp - Nekoosa Mill	Domtar Industries Inc	Nekoosa, WI	195 GWh	Dec 1911	Feb 2025	Black Liquor : 43.7% Natural Gas : 42.6% Water : 13.7%
Loud	Consumers Energy Co - (MI)	Oscoda, MI	17 GWh	Dec 1912	Dec 2023	Water
Port Edwards Mill	Domtar Industries Inc	Port Edwards, WI	39 GWh	Dec 1912	Feb 2025	Water
Saxon Falls	Northern States Power Co - Minnesota	Saxon, WI	9 GWh	Dec 1912	Dec 2023	Water
Sylvan	ALLETE, Inc.	Pillager, MN	8 GWh	Dec 1912	Dec 2023	Water
Keokuk	Union Electric Co - (MO)	Keokuk, IA	835 GWh	Jul 1913	Dec 2023	Water
Big Quinnesec 61	Wisconsin Electric Power Co	Iron Mountain, MI	3 GWh	Apr 1914	Aug 2023	Water
Crystal Falls	City of Crystal Falls	Crystal Falls, MI	5 GWh	May 1914	Dec 2023	Water
Hoot Lake	Otter Tail Power Co	Fergus Falls, MN	2 GWh	Aug 1914	Dec 2023	Water
Prairie Du Sac	Wisconsin Power & Light Co	Prairie du Sac, WI	131 GWh	Sep 1915	Dec 2023	Water
Mio	Consumers Energy Co - (MI)	Mio, MI	10 GWh	Dec 1915	Dec 2023	Water
Mosinee Mill	Ahlstrom-Munksjo NA Specialty Solutions, LLC	Mosinee, WI	123 GWh	Jun 1916	Feb 2025	Black Liquor : 40.2% Bituminous Coal : 32.1% Water : 17.0% Wood/Wood Waste Solids : 4.0% Residual Fuel Oil : 3.1% Natural Gas : 2.0% Sludge Waste : 1.6%
Appleton	Wisconsin Electric Power Co	Appleton, WI	6 GWh	Jul 1916	Dec 2023	Water
Brainerd Public Utilities	Brainerd Public Utilities	Brainerd, MN	11 GWh	Dec 1916	Dec 2023	Water
Wissota	Northern States Power Co - Minnesota	Chippewa Falls, WI	133 GWh	Dec 1916	Dec 2023	Water
Pillager	ALLETE, Inc.	Pillager, MN	6 GWh	Dec 1916	Dec 2023	Water
Superior Falls	Northern States Power Co - Minnesota	Ironwood, MI	9 GWh	Dec 1916	Dec 2023	Water
Merrill	Wisconsin Public Service Corp	Merrill, WI	8 GWh	Feb 1917	Dec 2023	Water
Rhinelander Mill	Ahlstrom-Munksjo	Rhinelander, WI	5 GWh	Nov 1917	Feb 2025	Water
Oconto Falls Upper	Eagle Creek Renewable Energy, LLC	Oconto Falls, WI	3 GWh	Dec 1917	Dec 2023	Water
Foote	Consumers Energy Co - (MI)	Oscoda, MI	29 GWh	Dec 1917	Dec 2023	Water
C W Tippy	Consumers Energy Co - (MI)	Wellston, MI	58 GWh	Dec 1917	Dec 2023	Water
Stevens Point	Consolidated Water Power Co	Stevens Point, WI	24 GWh	Dec 1917	Dec 2023	Water
Grand Rapids	Wisconsin Public Service Corp	Ingalls, MI	33 GWh	May 1918	Dec 2023	Water
Brule	Wisconsin Electric Power Co	Florence, WI	16 GWh	Dec 1918	Dec 2023	Water
St Louis	City of St Louis - (MI)	St. Louis, MI	175 MWh	Dec 1918	Dec 2023	Water : 95.4% Distillate Fuel Oil : 4.6%
James R Smith	City of Marquette - (MI)	Marquette, MI	16 GWh	Dec 1918	Dec 2023	Water
Park Mill	Eagle Creek Renewable Energy, LLC	Marinette, WI	10 GWh	Dec 1919	Dec 2023	Water
Packaging of America Tomahawk Mill	PCA-Tomahawk Mill	Tomahawk, WI	113 GWh	Dec 1919	Dec 2023	Natural Gas : 36.9% Wood/Wood Waste Solids : 34.9% Black Liquor : 15.8% Water : 12.0%
Prairie River	ALLETE, Inc.	Grand Rapids, MN	2 GWh	Mar 1920	Dec 2023	Water
Danbury Dam	Renewable World Energies LLC	Danbury, WI	3 GWh	Dec 1920	Dec 2023	Water
Wausau	Wisconsin Public Service Corp	Wausau, WI	23 GWh	Feb 1921	Dec 2023	Water
Potato Rapids	Wisconsin Public Service Corp	Town of Porterfield, WI	4 GWh	Apr 1921	Dec 2023	Water
Knife Falls	ALLETE, Inc.	Cloquet, MN	9 GWh	Dec 1921	Dec 2023	Water
Rogers	Consumers Energy Co - (MI)	Big Rapids, MI	23 GWh	Dec 1921	Dec 2023	Water
Big Falls	Northern States Power Co - Minnesota	Glen Fora, WI	33 GWh	Dec 1921	Dec 2023	Water
Pine	Wisconsin Electric Power Co	Florence, WI	12 GWh	May 1922	Dec 2023	Water

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#61	Alcoa Power Generating, Inc. - Yadkin Division	742.1 GWh	4
#26	Associated Electric Cooperative, Inc.	22.9 TWh	47
#13	Duke Energy Carolinas	111.3 TWh	556
#52	Duke Energy Progress West	4.2 TWh	10
#24	Louisville Gas and Electric Company and Kentucky Utilities Company	34.0 TWh	20
#1	PJM Interconnection, LLC	859.4 TWh	2,305
#20	Public Service Company of Colorado	48.6 TWh	201
#5	Southwest Power Pool	296.3 TWh	762
#51	Southwestern Power Administration	4.2 TWh	31
#8	Tennessee Valley Authority	158.9 TWh	170

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#1	PJM Interconnection, LLC	859.4 TWh	2,305
#2	Midcontinent Independent System Operator, Inc.	645.5 TWh	2,653
#3	Electric Reliability Council of Texas, Inc.	474.5 TWh	1,139
#5	Southwest Power Pool	296.3 TWh	762
#6	Southern Company Services, Inc. - Trans	252.3 TWh	393
#7	California Independent System Operator	189.5 TWh	1,943
#8	Tennessee Valley Authority	158.9 TWh	170
#10	Florida Power & Light Co.	148.5 TWh	159
#12	New York Independent System Operator	130.9 TWh	1,100
#13	Duke Energy Carolinas	111.3 TWh	556