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
USS Foley Solar LLC	United States Solar Corporation	Foley, MN	2 GWh	Jun 2022	Dec 2024	Solar
USS Prokosch Solar LLC	United States Solar Corporation	Bird Island, MN	2 GWh	May 2022	Dec 2024	Solar
USS Rosebud Solar LLC	United States Solar Corporation	Morgan, MN	2 GWh	Jul 2022	Dec 2024	Solar
USS Big Lake 1 Solar CSG	United States Solar Corporation	Big Lake, MN	2 GWh	Nov 2018	Dec 2024	Solar
USS Water City Solar LLC CSG	United States Solar Corporation	Waterville, MN	2 GWh	Sep 2021	Dec 2024	Solar
USS Water Fowl Solar LLC CSG	United States Solar Corporation	Silver Lake, MN	908 MWh	Aug 2022	Dec 2024	Solar
USS Water Town Solar LLC CSG	United States Solar Corporation	Waterville, MN	2 GWh	Oct 2021	Dec 2024	Solar
USS Bluff Country Solar CSG	United States Solar Corporation	Altura, MN	2 GWh	Nov 2020	Dec 2024	Solar
USS Viceroy Solar LLC CSG	United States Solar Corporation	Brooten, MN	3 GWh	Dec 2020	Dec 2024	Solar
USS Hubers Solar LLC CSG	United States Solar Corporation	Northfield, MN	2 GWh	Dec 2020	Dec 2024	Solar
USS Chariot Solar LLC	United States Solar Corporation	Danube, MN	2 GWh	Dec 2020	Dec 2024	Solar
USS Pheasant Solar LLC CSG	United States Solar Corporation	Clara City, MN	2 GWh	Oct 2020	Dec 2024	Solar
USS Hancock Solar LLC CSG	United States Solar Corporation	Cologne, MN	2 GWh	Dec 2020	Dec 2024	Solar
USS Bush Solar LLC CSG	United States Solar Corporation	Owatonna, MN	2 GWh	Sep 2020	Dec 2024	Solar
USS Reindeer Solar LLC CSG	United States Solar Corporation	Sauk Rapids, MN	2 GWh	Nov 2020	Dec 2024	Solar
USS Good Solar CSG	United States Solar Corporation	Stacy, MN	2 GWh	Nov 2018	Dec 2024	Solar
USS Kasch Solar CSG	United States Solar Corporation	Sauk Rapids, MN	2 GWh	Sep 2018	Dec 2024	Solar
USS Rockpoint Solar CSG	United States Solar Corporation	Stacy, MN	2 GWh	Nov 2018	Dec 2024	Solar
USS Solar Rapids CSG	United States Solar Corporation	Sauk Rapids, MN	2 GWh	Dec 2018	Dec 2024	Solar
USS Solar Dawn CSG	United States Solar Corporation	North Branch, MN	2 GWh	Nov 2018	Dec 2024	Solar
USS Norelius Solar CSG	United States Solar Corporation	North Branch, MN	2 GWh	Dec 2018	Dec 2024	Solar
USS Brockway Solar CSG	United States Solar Corporation	Sartell, MN	2 GWh	Dec 2018	Dec 2024	Solar
USS Dubhe Solar CSG	United States Solar Corporation	North Branch, MN	2 GWh	Nov 2018	Dec 2024	Solar
USS Nillie Corn Solar CSG	United States Solar Corporation	North Branch, MN	2 GWh	Nov 2018	Dec 2024	Solar
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%
Gary Works	United States Steel-Gary	Gary, IN	784 GWh	Mar 1997	Sep 2025	Blast Furnace Gas : 51.3% Natural Gas : 48.6%
University of Illinois Abbott Power Plt	University of Illinois	Champaign, IL	211 GWh	Oct 1940	Dec 2024	Natural Gas : 97.4% Bituminous Coal : 2.6%
University of Iowa Main Power Plant	University of Iowa	Iowa City, IA	4 GWh	Dec 1946	Sep 2024	Natural Gas : 51.7% Other Biomass Solids : 19.1% Wood/Wood Waste Solids : 18.4% Bituminous Coal : 10.8%
University of Michigan	University of Michigan	Ann Arbor, MI	209 GWh	Dec 1974	Sep 2025	Natural Gas
Warner Lambert	University of Michigan NCampus Research	Ann Arbor, MI	24 GWh	Jul 1989	Sep 2025	Natural Gas
Univ Minnesota CHP Plant	University of Minnesota Central Utilities	Minneapolis, MN	166 GWh	Oct 2017	Dec 2024	Natural Gas : 99.9%
UMM Wind Turbine	University of Minnesota Morris Campus	Morris, MN	4 GWh	May 2011	Dec 2024	Wind
WCROC Wind Farm	University of Minnesota WCROC	Morris, MN	4 GWh	Feb 2005	Dec 2024	Wind
University of Northern Iowa	University of Northern Iowa	Cedar Falls, IA	20 GWh	Oct 1982	Sep 2025	Natural Gas : 76.2% Petroleum Coke : 16.6% Bituminous Coal : 7.1%
F.D. Kuester Generating Station	Upper Michigan Energy Resources Company	Negaunee, MI	375 GWh	Feb 2019	Dec 2024	Natural Gas
A.J. Mihm Generating Station	Upper Michigan Energy Resources Company	Pelkie, MI	170 GWh	Feb 2019	Dec 2024	Natural Gas
Victoria Dam	Upper Peninsula Power Company	Rockland, MI	26 GWh	Dec 1930	Dec 2024	Water
Hoist	Upper Peninsula Power Company	Negaunee, MI	13 GWh	Jan 1988	Dec 2024	Water
Prickett	Upper Peninsula Power Company	Pelkie, MI	7 GWh	Oct 1931	Dec 2024	Water
McClure Dam	Upper Peninsula Power Company	Marquette, MI	32 GWh	Jan 1988	Dec 2024	Water
Ursa Community Solar	Ursa Community Solar	Farmington, MN	8 GWh	Dec 2016	Dec 2024	Solar
Saint Marys Falls	USACE-Detroit District	Sault Ste. Marie, MI	155 GWh	Jun 1932	Dec 2024	Water
Sam Rayburn Dam	USACE-Fort Worth District	Jasper, TX	199 GWh	Aug 1965	Dec 2024	Water
Degray	USCE -Vickburg District	Arkadelphia, AR	211 GWh	Jan 1972	Sep 2025	Water
Blakely Mountain	USCE -Vickburg District	Royal, AR	158 GWh	Aug 1955	Dec 2024	Water
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%
Valley Queen Cheese	Valley Queen Cheese Factory, Inc.	Milbank, SD	24 MWh	Mar 2002	Jun 2025	Distillate Fuel Oil
Vega Community Solar	Vega Community Solar	Glenwood, MN	8 GWh	Sep 2017	Dec 2024	Solar
Venus Wind 3 LLC	Venus Wind 3 LLC	Grinnell, IA	10 GWh	Feb 2017	Dec 2024	Wind
Vermilion Solar 1, LLC CSG	Vermilion Solar 1, LLC	Danville, IL	3 GWh	Nov 2020	Dec 2024	Solar
Veseli Community Solar Garden	Veseli Solar I LLC	Webster, MN	2 GWh	Jan 2018	Dec 2024	Solar
Viking Solar CSG	Viking Solar, LLC	Palmyra, IL	5 GWh	May 2021	Dec 2024	Solar
Cashton	Village of Cashton - (WI)	Cashton, WI	8 MWh	Jul 1932	Dec 2024	Distillate Fuel Oil : 98.9% Natural Gas : 1.1%
Freeburg	Village of Freeburg - (IL)	Freeburg, IL	122 MWh	Jul 1948	Dec 2024	Distillate Fuel Oil
Rantoul	Village of Rantoul - (IL)	Rantoul, IL	200 MWh	Dec 1950	Sep 2025	Distillate Fuel Oil
Pine Street	Village of Sebewaing - (MI)	Sebewaing, MI	14 GWh	May 1969	Dec 2024	Natural Gas
Main Street (MI)	Village of Sebewaing - (MI)	Sebewaing, MI	1 MWh	May 1947	Dec 2023	Distillate Fuel Oil
Viola	Village of Viola - (WI)	Viola, WI	5 MWh	Dec 2001	Dec 2024	Distillate Fuel Oil
Viresco Turtle Lake	Viresco Turtle Lake	Turtle Lake, WI	8 GWh	Aug 2013	Dec 2024	Other Biomass Gas
Baldwin Solar BESS	Vistra Corp	Baldwin, IL	121 GWh	Nov 2024	Sep 2025	Solar
Coffeen Solar BESS	Vistra Corp	Coffeen, IL	74 GWh	Nov 2024	Sep 2025	Solar
Liberty I & II LFGTE	Wabash Valley Power Assn, Inc	Monticello, IN	27 GWh	Jul 2005	Dec 2023	Landfill Gas
Oak Ridge LFGTE	Wabash Valley Power Assn, Inc	Logansport, IN	26 GWh	Nov 2003	Dec 2024	Landfill Gas
Twin Bridges LFGTE	Wabash Valley Power Assn, Inc	Danville, IN	6 GWh	Sep 1994	Dec 2023	Landfill Gas
Prairie View I & II LFGTE	Wabash Valley Power Assn, Inc	Wyatt, IN	31 GWh	Sep 1994	Dec 2023	Landfill Gas
Deercroft I & II LFGTE	Wabash Valley Power Assn, Inc	Michigan City, IN	19 GWh	Jul 1999	Dec 2024	Landfill Gas
Wabash Valley Power IGCC	Wabash Valley Power Assn, Inc	Terre Haute, IN	340 GWh	Nov 1953	Sep 2025	Natural Gas
Clinton LFGTE	Wabash Valley Power Assn, Inc	Clinton, IL	18 GWh	Jan 2006	Sep 2025	Landfill Gas
Wabasha Holdco Solar CSG	Wabasha Holdco LLC	Wabasha, MN	2 GWh	Feb 2017	Dec 2024	Solar
Wabasha Solar	Wabasha Solar LLC	Wabasha, MN	2 GWh	Jul 2019	Dec 2024	Solar
Walleye Wind	Walleye Wind, LLC	Beaver Creek, MN	472 GWh	Nov 2022	Sep 2025	Wind
Walnut Bend Solar Station PV	Walnut Bend Solar Station	Moro, AR	227 GWh	Aug 2024	Sep 2025	Solar
Wapello Solar LLC	Wapello Solar LLC	Wapello, IA	210 GWh	Feb 2021	Sep 2025	Solar
Washington Island	Washington Island El Coop, Inc	Washington Island, WI	9 MWh	Nov 1945	Dec 2023	Distillate Fuel Oil
Waterford Holdco CSG	Waterford Holdco LLC	Waterford, MN	4 GWh	Oct 2017	Dec 2024	Solar
Waverly Community Wind Project	Waverly Municipal Elec Utility	Waverly, IA	6 GWh	Nov 2001	Dec 2024	Wind
Waverly Municipal Electric North Plant	Waverly Municipal Elec Utility	Waverly, IA	232 MWh	Jul 1958	Dec 2024	Distillate Fuel Oil : 55.1% Natural Gas : 44.9%
South Plant (IA)	Waverly Municipal Elec Utility	Waverly, IA	51 MWh	Apr 2000	Dec 2024	Distillate Fuel Oil
Webster Holdco Solar CSG	Webster Holdco LLC	Webster, MN	7 GWh	Jun 2017	Dec 2024	Solar
Western Michigan University Power Plant	Western Michigan University	Kalamazoo, MI	70 GWh	Jul 1997	Dec 2024	Natural Gas
Red Rock Hydro Plant	Western Minnesota Mun Pwr Agny	Pella, IA	165 GWh	Apr 2021	Sep 2025	Water
Marshall Solar Plus LLC	Western Minnesota Mun Pwr Agny	Marshall, MN	539 MWh	Nov 2024	Dec 2024	Solar
PPG Riverside	Westlake 2 US LLC	Lake Charles, LA	59 GWh	Aug 1947	Jul 2025	Purchased Steam
PPG Powerhouse C	Westlake 2 US LLC	Lake Charles, LA	2 TWh	Jul 1977	Sep 2025	Natural Gas : 99.5%
PPG Plant C Caustic	Westlake 2 US LLC	Lake Charles, LA	14 GWh	Sep 1986	Dec 2024	Natural Gas
RS Cogen	Westlake 2 US LLC	Lake Charles, LA	3 TWh	Nov 2002	Sep 2025	Natural Gas
Westlake Plaquemine	Westlake Chemicals & Vinyls LLC	Plaquemine, LA	2 TWh	Apr 1997	Sep 2025	Natural Gas : 98.5% Other Gas : 1.5%
Westridge Windfarm LLC	Westridge Windfarm LLC	Woodstock, MN	288 MWh	Oct 2003	Dec 2024	Wind
Westrock Hodge (LA)	Westrock (LA)	Hodge, LA	466 GWh	Nov 1952	Dec 2024	Black Liquor : 50.4% Natural Gas : 35.5% Wood/Wood Waste Solids : 14.2%
WestRock (TX)	WestRock (TX)	Evadale, TX	415 GWh	May 1954	Dec 2024	Black Liquor : 58.9% Wood/Wood Waste Solids : 22.0% Natural Gas : 19.1%
Westside Solar	Westside Solar, LLC (Ecofin)	Rochester, MN	17 GWh	Nov 2022	Dec 2024	Solar
White Oak Energy LLC	White Oak Energy LLC	Carlock, IL	376 GWh	May 2011	Dec 2024	Wind
Whiteside Solar 1 CSG	Whiteside Solar 1, LLC	Fulton, IL	2 GWh	Nov 2020	Dec 2024	Solar
Willford Solar, LLC	Willford Solar, LLC	Gladwin, MI	34 GWh	Sep 2023	Dec 2024	Solar
Willmar Municipal East Substation	Willmar Municipal Utilities	Willmar, MN	23 MWh	May 2000	Dec 2024	Distillate Fuel Oil
Willmar Municipal SW Substation	Willmar Municipal Utilities	Willmar, MN	22 MWh	May 2000	Dec 2024	Distillate Fuel Oil
Willmar	Willmar Municipal Utilities	Willmar, MN	5 GWh	Aug 1956	Jul 2024	Wind
Wilton Wind II LLC	Wilton Wind II LLC	Wilton, ND	200 GWh	Oct 2009	Dec 2024	Wind
Wind GEM	Wind GEM, LLC	Stuart, IA	5 GWh	Aug 2015	Dec 2024	Wind
Windcurrent Farms LLC	Windcurrent Farms LLC	Woodstock, MN	5 GWh	Aug 2003	Dec 2024	Wind

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