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	Oct 2025
Annual Generation	651.4 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 \| 36.1% Coal \| 28.7% Wind \| 15% Nuclear \| 14% Solar \| 4.3% Water \| 1.5% Other Fuel \| 0.5%

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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
Settlers Trail Wind Farm LLC	Big Sky Wind, LLC	Sheldon, IL	354 GWh	Sep 2011	Dec 2024	Wind
Garden Wind LLC	Garden Wind LLC	Zearing, IA	354 GWh	Nov 2009	Jul 2025	Wind
Driver Solar	Entergy Arkansas LLC	Osceola, AR	353 GWh	Oct 2024	Jul 2025	Solar
Wabash Valley Power IGCC	Wabash Valley Power Assn, Inc	Terre Haute, IN	350 GWh	Nov 1953	Jul 2025	Natural Gas
SABIC Innovative Plastics Mt. Vernon	SABIC IP Mt. Vernon, LLC	Mount Vernon, IN	345 GWh	May 1996	Jul 2025	Natural Gas
Henry County	Duke Energy Indiana, LLC	New Castle, IN	345 GWh	Jun 2001	Dec 2024	Natural Gas
Mower County Wind Energy Center	Northern States Power Co - Minnesota	Grand Meadow, MN	343 GWh	Nov 2006	Dec 2024	Wind
Bent Tree Wind Farm Phase 1	Wisconsin Power & Light Co	Hartland, MN	343 GWh	Jan 2011	Dec 2024	Wind
Fenton Wind Farm	EDF Renewable Asset Holdings, Inc.	Chandler, MN	342 GWh	Aug 2007	Jul 2025	Wind
Newport Solar Project	Newport Solar, LLC	Newport, AR	342 GWh	Sep 2023	Jul 2025	Solar
Blue Sky Green Field Wind Project	Wisconsin Electric Power Co	Fond du Lac, WI	342 GWh	Apr 2008	Jul 2025	Wind
Bishop Hill II Wind Farm	Bishop Hill Energy II, LLC	Cambridge, IL	340 GWh	Sep 2012	Dec 2024	Wind
Boise Cascade International Falls	Boise White Paper LLC	International Falls, MN	339 GWh	Dec 1926	Jul 2025	Black Liquor : 63.9% Natural Gas : 22.4% Wood/Wood Waste Solids : 12.3% Sludge Waste : 1.3%
Ivester Wind Farm	MidAmerican Energy Co	Wellsburg, IA	338 GWh	Nov 2018	Jul 2025	Wind
Rugby Wind Power Project	Avangrid Power LLC	Barton, ND	335 GWh	Nov 2009	Dec 2024	Wind
Calhoun Solar	Invenergy Services LLC	Battle Creek, MI	335 GWh	Nov 2022	Jul 2025	Solar
Lakefield Wind Project LLC	EDF Renewable Asset Holdings, Inc.	Lakefield, MN	331 GWh	Sep 2011	Jul 2025	Wind
Macksburg Wind Project	MidAmerican Energy Co	Macksburg, IA	330 GWh	Nov 2014	Dec 2024	Wind
Ashtabula Wind II LLC	Ashtabula Wind II LLC	Luverne, ND	328 GWh	Sep 2009	Dec 2024	Wind
Umbriel Solar	Umbriel Solar, LLC	Livington, TX	328 GWh	Sep 2023	Jul 2025	Solar
Deerfield Wind Energy 2	Deerfield Wind Energy 2, LLC	Port Hope, MI	328 GWh	Feb 2023	Jul 2025	Wind
Michigan Wind 2	Michigan Wind 2, LLC	Minden City, MI	327 GWh	Nov 2011	Dec 2024	Wind
Smithland Hydroelectric Plant	American Mun Power-Ohio, Inc	Smithland, KY	325 GWh	Jun 2017	Jul 2025	Water
Sac County Wind, LLC	Sac County Wind	Sac City, IA	325 GWh	Nov 2021	Jul 2025	Wind
Waterford 1 & 2	Entergy Louisiana LLC	Killona, LA	319 GWh	Jun 1975	Dec 2024	Natural Gas : 99.5% Distillate Fuel Oil : 0.5%
Blue Lake	Northern States Power Co - Minnesota	Shakopee, MN	318 GWh	Feb 1974	Dec 2024	Natural Gas : 99.3% Distillate Fuel Oil : 0.7%
Big River Solar	Big River Solar, LLC	Norris City, IL	317 GWh	Jul 2022	Jul 2025	Solar
Maple Flats	Invenergy Services LLC	Louisville, IL	316 GWh	Oct 2024	Jul 2025	Solar
Contrail Wind Farm	MidAmerican Energy Co	Bedford, IA	315 GWh	Nov 2020	Jul 2025	Wind
Rosewater Wind Farm	Rosewater Wind Farm LLC	Chalmers, IN	315 GWh	Nov 2020	Jul 2025	Wind
Combined Locks Energy Center	McKinley Paper	Combined Locks, WI	310 GWh	Apr 2002	Dec 2024	Natural Gas
Prosperity Wind	Prosperity Wind, LLC	Deland, IL	309 GWh	-	Jul 2025	Wind
Tuscola Wind II LLC	Tuscola Wind II LLC	Reese, MI	306 GWh	Oct 2013	Jul 2025	Wind
Black Oak Wind Farm	Black Oak Wind, LLC	Sauk Centre, MN	306 GWh	Nov 2016	Jul 2025	Wind
Bennington Wind	Minonk Stewardship Wind LLC	Minonk, IL	306 GWh	Sep 2021	Jul 2025	Wind
Ames Electric Services Power Plant	City of Ames - (IA)	Ames, IA	306 GWh	Apr 1968	Dec 2024	Natural Gas : 90.9% Other Biomass Solids : 9.1%
Crane Creek Wind Energy Center	Wisconsin Public Service Corp	Riceville, IA	302 GWh	Nov 2009	Dec 2024	Wind
Sherco Solar I	Northern States Power Co - Minnesota	Clear Lake, MN	300 GWh	Sep 2024	Jul 2025	Solar
Lake Catherine	Entergy Arkansas LLC	Jones Mill, AR	300 GWh	Mar 1970	Nov 2024	Natural Gas
Flint Hills Resources Pine Bend, LLC	Flint Hills Resources Pine Bend, LLC	Rosemount, MN	299 GWh	Apr 2019	Dec 2024	Natural Gas
Markland	Duke Energy Indiana, LLC	Florence, IN	299 GWh	Dec 1966	Dec 2024	Water
Prairie Star Wind Farm	High Prairie Wind Farm II LLC	Grand Meadow, MN	298 GWh	Nov 2007	Dec 2024	Wind
Sylvarena	Cooperative Energy	Raleigh, MS	294 GWh	Jun 2003	Dec 2024	Natural Gas
Billerud Quinnesec Mill	Billerud Quinnesec Mill	Norway, MI	294 GWh	Sep 1985	Dec 2024	Black Liquor : 67.8% Wood/Wood Waste Solids : 30.2% Natural Gas : 1.9%
Thomson	ALLETE, Inc.	Carlton, MN	290 GWh	Dec 1906	Dec 2024	Water
Pine Bluff Mill	Suzano Packaging LLC	Pine Bluff, AR	289 GWh	Apr 1958	Dec 2023	Black Liquor : 80.1% Natural Gas : 19.9%
Kossuth County Wind	Kossuth County Wind, LLC	Lu Verne, IA	288 GWh	Nov 2022	Jul 2025	Wind
New Harvest Wind Project LLC	Avangrid Power LLC	Schleswig, IA	287 GWh	Nov 2011	Dec 2024	Wind
TES Filer City Station	TES Filer City Station LP	Filer City, MI	287 GWh	Apr 1990	Jul 2025	Bituminous Coal : 65.1% Natural Gas : 20.1% Wood/Wood Waste Solids : 14.8%
Kentucky Mills	Domtar Paper Company LLC	Hawesville, KY	286 GWh	May 2001	Dec 2024	Black Liquor : 77.7% Wood/Wood Waste Solids : 22.3%
High Prairie Wind Farm	Union Electric Co - (MO)	Queen City, MO	286 GWh	Nov 2020	Jul 2025	Wind
MinnDakota Wind LLC	Avangrid Power LLC	Ivanhoe, MN	283 GWh	Dec 2007	Dec 2024	Wind
Wood County	Wisconsin Power & Light Co	Nekoosa, WI	282 GWh	Nov 2022	Jul 2025	Solar
West Campus Cogeneration Facility	Madison Gas & Electric Co	Madison, WI	282 GWh	Mar 2005	Dec 2024	Natural Gas : 99.8%
Saratoga Wind Farm	Madison Gas & Electric Co	Lime Springs, IA	280 GWh	Jan 2019	Jul 2025	Wind
Rail Splitter Wind Farm	Rail Splitter Wind Farm LLC	Hopedale, IL	278 GWh	Jul 2009	Dec 2024	Wind
Charles City Wind Farm	MidAmerican Energy Co	Charles City, IA	274 GWh	Mar 2008	Dec 2024	Wind
Goodyear Beaumont Chemical Plant	Goodyear Tire & Rubber Co	Beaumont, TX	274 GWh	Feb 1987	Jul 2025	Natural Gas : 98.5% Waste/Other Oil : 1.5%
Elizabeth Solar Plant	Horus Louisiana 1, LLC	Pitkin, LA	273 GWh	Jul 2024	Jul 2025	Solar
Apple Blossom Wind Farm	Apple Blossom Wind, LLC	Pigeon, MI	266 GWh	Oct 2017	Jul 2025	Wind
Lake Winds Energy Park	Consumers Energy Co - (MI)	Ludington, MI	262 GWh	Oct 2012	Dec 2024	Wind
Pheasant Run Wind LLC	Pheasant Run Wind LLC	Pigeon, MI	261 GWh	Nov 2013	Jul 2025	Wind
Wapsipinicon Wind Project	EDF Renewable Asset Holdings, Inc.	Dexter, MN	260 GWh	Jan 2009	Dec 2024	Wind
Sigel Wind Park	DTE Electric Company	Harbor Beach, MI	260 GWh	Nov 2012	Jul 2025	Wind
Red Barn Energy	Wisconsin Public Service Corp	Montfort, WI	259 GWh	Mar 2023	Jul 2025	Wind
Hancock County Wind Energy Center	FPL Energy Hancock County Wind, LLC	Garner, IA	257 GWh	Nov 2002	Jul 2025	Wind
Portside Energy	Primary Energy Recycling Holdings, LLC	Portage, IN	256 GWh	Aug 1997	Dec 2024	Natural Gas
Brookfield	DTE Electric Company	Pigeon, MI	255 GWh	Jan 2014	Jul 2025	Wind
Primient Decatur Plant Cogen	Primary Products Ingredients Americas, LLC	Decatur, IL	254 GWh	Dec 1988	Dec 2024	Natural Gas
T B Simon Power Plant	Michigan State University	East Lansing, MI	251 GWh	Nov 1965	Jul 2025	Natural Gas
A B Brown	Southern Indiana Gas & Elec Co	Mount Vernon, IN	248 GWh	Feb 1979	Jul 2025	Natural Gas
Dearborn Energy Center	DTE Electric Company	Dearborn, MI	247 GWh	Nov 2019	Dec 2024	Natural Gas
Farmers City Wind LLC	Avangrid Power LLC	Tarkio, MO	246 GWh	Mar 2009	Dec 2024	Wind
Wolf Run Solar	Wolf Run Solar LLC	Chapin, IL	246 GWh	Oct 2024	Jul 2025	Solar
Twin Lakes Solar LLC	Twin Lakes Solar LLC	Monticello, IN	245 GWh	Nov 2024	Jul 2025	Solar
Indiana Harbor West	Cleveland Cliffs	East Chicago, IN	245 GWh	Sep 1939	Dec 2024	Natural Gas
Kalamazoo River Generating Station	CMS Generation MI Power LLC	Comstock, MI	245 GWh	May 1999	Dec 2024	Natural Gas
Lake Benton I	ALLETE Clean Energy	Lake Benton, MN	244 GWh	Jan 1998	Dec 2024	Wind
Lost Lakes Wind Farm LLC	Lost Lakes Wind Farm LLC	Lake Park, IA	244 GWh	Nov 2009	Dec 2024	Wind
West Memphis Solar Station	Entergy Arkansas LLC	Crawfordsville, AR	241 GWh	Nov 2024	Jul 2025	Solar
Onion River	Wisconsin Power & Light Co	Sheboygan Cedar Grove, WI	241 GWh	Nov 2023	Jul 2025	Solar
Crystal Lake 3 LLC	Crystal Lake 3 LLC	Britt, IA	239 GWh	Nov 2009	Jul 2025	Wind
Huck Finn Renewable Energy Center	Union Electric Co - (MO)	Vandalia, MO	239 GWh	Nov 2024	Jul 2025	Solar
USG Paper, LLC - Orange Mill	USG Paper LLC	Orange, TX	239 GWh	Oct 1967	Dec 2023	Black Liquor : 59.3% Wood/Wood Waste Solids : 39.8% Tire-derived Fuels : 0.9%
Angus Anson	Northern States Power Co - Minnesota	Sioux Falls, SD	237 GWh	Jul 1994	Dec 2024	Natural Gas : 99.2% Distillate Fuel Oil : 0.8%
Consumer Operations LLC	Georgia-Pacific Consumer Oper. Green Bay LLC	Green Bay, WI	234 GWh	Dec 1953	Jul 2025	Natural Gas
International Paper Vicksburg Mill	International Paper Co-Vicksbg	Vicksburg, MS	230 GWh	Dec 1966	Jul 2025	Black Liquor : 52.2% Natural Gas : 29.2% Wood/Wood Waste Solids : 18.6%
Assembly Solar II LLC	Assembly Solar II LLC	Lennon, MI	230 GWh	Nov 2021	Jul 2025	Solar
Gratiot Wind Park	DTE Electric Company	Breckenridge, MI	230 GWh	Oct 2011	Jul 2025	Wind
Gratiot County Wind LLC	Invenergy Services LLC	Breckenridge, MI	228 GWh	Apr 2012	Dec 2024	Wind
Paris (WI)	Wisconsin Electric Power Co	Union Grove, WI	227 GWh	Feb 1995	Dec 2024	Natural Gas
Dressor Plains Solar, LLC	Dressor Plains Solar, LLC	Herrick, IL	226 GWh	Aug 2021	Jul 2025	Solar
CITGO Refinery Powerhouse	CITGO Petroleum Corp	Sulphur, LA	226 GWh	Dec 1941	Dec 2024	Other Gas
Port Arthur Texas Refinery	Total Petrochemicals USA Inc	Port Arthur, TX	226 GWh	Jul 1988	Dec 2024	Natural Gas : 75.0% Other Gas : 25.0%
Prairie State Solar Project	Prairie State Solar, LLC	Swanwick Township, IL	225 GWh	Jun 2021	Jul 2025	Solar
Bison 3 Wind Energy Center	ALLETE, Inc.	New Salem, ND	223 GWh	Nov 2012	Dec 2024	Wind
Chicot Solar	Chicot Solar, LLC	Lake Village, AR	221 GWh	Aug 2020	Jul 2025	Solar
Bison 2 Wind Energy Center	ALLETE, Inc.	New Salem, ND	219 GWh	Nov 2012	Dec 2024	Wind
Happy Solar 1	Lightsource Renewable Energy Asset Management, LLC	Searcy, AR	218 GWh	Sep 2023	Jul 2025	Solar
Independence Wind Farm	Independence Wind Energy LLC	Manchester, IA	216 GWh	Nov 2021	Jul 2025	Wind

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#61	Alcoa Power Generating, Inc. - Yadkin Division	733.4 GWh	4
#26	Associated Electric Cooperative, Inc.	23.4 TWh	47
#13	Duke Energy Carolinas	112.0 TWh	565
#52	Duke Energy Progress West	4.1 TWh	10
#24	Louisville Gas and Electric Company and Kentucky Utilities Company	34.2 TWh	25
#1	PJM Interconnection, LLC	866.1 TWh	2,465
#6	Southern Company Services, Inc. - Trans	249.8 TWh	417
#5	Southwest Power Pool	298.0 TWh	835
#49	Southwestern Power Administration	5.2 TWh	34
#8	Tennessee Valley Authority	160.6 TWh	204

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#1	PJM Interconnection, LLC	866.1 TWh	2,465
#2	Midcontinent Independent System Operator, Inc.	651.4 TWh	2,831
#3	Electric Reliability Council of Texas, Inc.	482.3 TWh	1,313
#5	Southwest Power Pool	298.0 TWh	835
#6	Southern Company Services, Inc. - Trans	249.8 TWh	417
#7	California Independent System Operator	188.7 TWh	2,075
#8	Tennessee Valley Authority	160.6 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	112.0 TWh	565