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%

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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
Big Quinnesec 92	Wisconsin Electric Power Co	Iron Mountain, MI	100 GWh	Oct 1949	Dec 2023	Water
LSP-Whitewater LP	Wisconsin Electric Power Co	Whitewater, WI	855 GWh	Aug 1997	Feb 2025	Natural Gas
Elm Road Generating Station	Wisconsin Electric Power Co	Oak Creek, WI	8 TWh	Jan 2010	Feb 2025	Subbituminous Coal : 72.0% Bituminous Coal : 17.7% Natural Gas : 10.3%
Blue Sky Green Field Wind Project	Wisconsin Electric Power Co	Fond du Lac, WI	350 GWh	Apr 2008	Feb 2025	Wind
Rothschild Biomass Cogen Facility	Wisconsin Electric Power Co	Rothschild, WI	143 GWh	Oct 2013	Dec 2023	Wood/Wood Waste Solids : 96.1% Natural Gas : 3.9%
Montfort Wind Energy Center	Wisconsin Electric Power Co	Montfort, WI	59 GWh	May 2002	Feb 2025	Wind
Way Dam	Wisconsin Electric Power Co	Crystal Falls, MI	6 GWh	Nov 1949	Dec 2023	Water
Brule	Wisconsin Electric Power Co	Florence, WI	16 GWh	Dec 1918	Dec 2023	Water
White Rapids	Wisconsin Electric Power Co	Stephenson, MI	30 GWh	Sep 1927	Dec 2023	Water
Glacier Hills	Wisconsin Electric Power Co	Cambria, WI	386 GWh	Nov 2011	Feb 2025	Wind
Concord	Wisconsin Electric Power Co	Watertown, WI	120 GWh	Jun 1993	Dec 2023	Natural Gas : 99.9%
Regal Ware	Wisconsin Electric Power Co	West Bend, WI	3 GWh	Mar 2021	Dec 2023	Solar
Jones Dairy	Wisconsin Electric Power Co	Fort Atkinson, WI	3 GWh	Jun 2021	Dec 2023	Solar
CREE	Wisconsin Electric Power Co	Racine, WI	2 GWh	Jul 2021	Dec 2023	Solar
Washington County	Wisconsin Electric Power Co	West Bend, WI	4 GWh	Dec 2019	Dec 2023	Solar
Paris Solar	Wisconsin Electric Power Co	Union Grove, WI	33 GWh	-	Feb 2025	Solar
ATI	Wisconsin Electric Power Co	Cudahy, WI	4 GWh	Oct 2020	Dec 2023	Solar
Badger Hollow II	Wisconsin Electric Power Co	Cobb, WI	197 GWh	Nov 2023	Feb 2025	Solar
Lannon Stone	Wisconsin Electric Power Co	Pewaukee, WI	3 GWh	Nov 2021	Dec 2023	Solar
Harley-Davison Powertrain Operations	Wisconsin Electric Power Co	Menomonee Falls, WI	3 GWh	Sep 2020	Dec 2023	Solar
UW Parkside	Wisconsin Electric Power Co	Kenosha, WI	4 GWh	Oct 2020	Dec 2023	Solar
City of Milwaukee Landfill	Wisconsin Electric Power Co	Milwaukee, WI	4 GWh	Jan 2021	Dec 2023	Solar
Wiota	Wiota Wind Energy, LLC #1	Wiota, IA	5 GWh	Apr 2012	Dec 2023	Wind
Winona Solar	Winona Solar I LLC	Altura, MN	7 GWh	Jul 2019	Dec 2023	Solar
Winona Garden	Winona Garden LLC	Altura, MN	257 MWh	Oct 2023	Dec 2023	Solar
Winnebago County Landfill Gas	Winnebago County	Oshkosh, WI	11 GWh	Jan 2000	Dec 2023	Landfill Gas
Windcurrent Farms LLC	Windcurrent Farms LLC	Woodstock, MN	5 GWh	Aug 2003	Dec 2023	Wind
Wind GEM	Wind GEM, LLC	Stuart, IA	5 GWh	Aug 2015	Dec 2023	Wind
Wilton Wind II LLC	Wilton Wind II LLC	Wilton, ND	187 GWh	Oct 2009	Dec 2023	Wind
Willmar	Willmar Municipal Utilities	Willmar, MN	3 GWh	Aug 1956	Dec 2023	Wind
Willmar Municipal East Substation	Willmar Municipal Utilities	Willmar, MN	14 MWh	May 2000	Dec 2023	Distillate Fuel Oil
Willmar Municipal SW Substation	Willmar Municipal Utilities	Willmar, MN	14 MWh	May 2000	Dec 2023	Distillate Fuel Oil
Willford Solar, LLC	Willford Solar, LLC	Gladwin, MI	1 GWh	Sep 2023	Dec 2023	Solar
Whiteside Solar 1 CSG	Whiteside Solar 1, LLC	Fulton, IL	3 GWh	Nov 2020	Dec 2023	Solar
White Oak Energy LLC	White Oak Energy LLC	Carlock, IL	394 GWh	May 2011	Dec 2023	Wind
Westside Solar	Westside Solar, LLC (Ecofin)	Rochester, MN	17 GWh	Nov 2022	Dec 2023	Solar
WestRock (TX)	WestRock (TX)	Evadale, TX	407 GWh	May 1954	Dec 2023	Black Liquor : 57.4% Wood/Wood Waste Solids : 24.4% Natural Gas : 18.1%
Westrock Hodge (LA)	Westrock (LA)	Hodge, LA	412 GWh	Nov 1952	Dec 2023	Black Liquor : 48.0% Natural Gas : 37.4% Wood/Wood Waste Solids : 14.5%
Westridge Windfarm LLC	Westridge Windfarm LLC	Woodstock, MN	4 GWh	Oct 2003	Jan 2023	Wind
Westlake Plaquemine	Westlake Chemicals & Vinyls LLC	Plaquemine, LA	2 TWh	Apr 1997	Feb 2025	Natural Gas : 97.8% Other Gas : 2.2%
RS Cogen	Westlake 2 US LLC	Lake Charles, LA	2 TWh	Nov 2002	Feb 2025	Natural Gas
PPG Riverside	Westlake 2 US LLC	Lake Charles, LA	111 GWh	Aug 1947	Nov 2024	Purchased Steam
PPG Powerhouse C	Westlake 2 US LLC	Lake Charles, LA	2 TWh	Jul 1977	Feb 2025	Natural Gas : 99.1% Other Gas : 0.9%
PPG Plant C Caustic	Westlake 2 US LLC	Lake Charles, LA	6 GWh	Sep 1986	Dec 2023	Natural Gas
Red Rock Hydro Plant	Western Minnesota Mun Pwr Agny	Pella, IA	133 GWh	Apr 2021	Feb 2025	Water
Western Michigan University Power Plant	Western Michigan University	Kalamazoo, MI	71 GWh	Jul 1997	Dec 2023	Natural Gas
West Memphis Solar, LLC	West Memphis Solar, LLC	Crawfordsville, AR	58 GWh	-	Feb 2025	Solar
Webster Holdco Solar CSG	Webster Holdco LLC	Webster, MN	8 GWh	Jun 2017	Dec 2023	Solar
South Plant	Waverly Municipal Elec Utility	Waverly, IA	79 MWh	Apr 2000	Dec 2023	Distillate Fuel Oil
Waverly Municipal Electric North Plant	Waverly Municipal Elec Utility	Waverly, IA	224 MWh	Jul 1958	Dec 2023	Distillate Fuel Oil : 52.5% Natural Gas : 47.5%
Waverly Community Wind Project	Waverly Municipal Elec Utility	Waverly, IA	6 GWh	Nov 2001	Dec 2023	Wind
Waterford Holdco CSG	Waterford Holdco LLC	Waterford, MN	4 GWh	Oct 2017	Dec 2023	Solar
Washington Island	Washington Island El Coop, Inc	Washington Island, WI	9 MWh	Nov 1945	Dec 2023	Distillate Fuel Oil
Wapello Solar LLC	Wapello Solar LLC	Wapello, IA	222 GWh	Feb 2021	Feb 2025	Solar
Walnut Bend Solar Station PV	Walnut Bend Solar Station	Moro, AR	71 GWh	-	Feb 2025	Solar
Walleye Wind	Walleye Wind, LLC	Beaver Creek, MN	492 GWh	Nov 2022	Feb 2025	Wind
Wabasha Solar	Wabasha Solar LLC	Wabasha, MN	4 GWh	Jul 2019	Dec 2023	Solar
Wabasha Holdco Solar CSG	Wabasha Holdco LLC	Wabasha, MN	4 GWh	Feb 2017	Dec 2023	Solar
Clinton LFGTE	Wabash Valley Power Assn, Inc	Clinton, IL	11 GWh	Jan 2006	Feb 2025	Landfill Gas
Prairie View I & II LFGTE	Wabash Valley Power Assn, Inc	Wyatt, IN	31 GWh	Sep 1994	Dec 2023	Landfill Gas
Wabash Valley Power IGCC	Wabash Valley Power Assn, Inc	Terre Haute, IN	441 GWh	Nov 1953	Feb 2025	Natural Gas
Oak Ridge LFGTE	Wabash Valley Power Assn, Inc	Logansport, IN	22 GWh	Nov 2003	Dec 2023	Landfill Gas
Liberty I & II LFGTE	Wabash Valley Power Assn, Inc	Monticello, IN	27 GWh	Jul 2005	Dec 2023	Landfill Gas
Twin Bridges LFGTE	Wabash Valley Power Assn, Inc	Danville, IN	6 GWh	Sep 1994	Dec 2023	Landfill Gas
Deercroft I & II LFGTE	Wabash Valley Power Assn, Inc	Michigan City, IN	17 GWh	Jul 1999	Dec 2023	Landfill Gas
Viresco Turtle Lake	Viresco Turtle Lake	Turtle Lake, WI	5 GWh	Aug 2013	Dec 2023	Other Biomass Gas
Viola	Village of Viola - (WI)	Viola, WI	4 MWh	Dec 2001	Dec 2023	Distillate Fuel Oil
Pine Street	Village of Sebewaing - (MI)	Sebewaing, MI	25 GWh	May 1969	Dec 2023	Natural Gas
Main Street (MI)	Village of Sebewaing - (MI)	Sebewaing, MI	1 MWh	May 1947	Dec 2023	Distillate Fuel Oil
Rantoul	Village of Rantoul - (IL)	Rantoul, IL	145 MWh	Dec 1950	Feb 2025	Distillate Fuel Oil
Freeburg	Village of Freeburg - (IL)	Freeburg, IL	230 MWh	Jul 1948	Dec 2023	Distillate Fuel Oil
Cashton	Village of Cashton - (WI)	Cashton, WI	15 MWh	Jul 1932	Dec 2023	Distillate Fuel Oil
Viking Solar CSG	Viking Solar, LLC	Palmyra, IL	6 GWh	May 2021	Dec 2023	Solar
Veseli Community Solar Garden	Veseli Solar I LLC	Webster, MN	1 GWh	Jan 2018	Dec 2023	Solar
Vermilion Solar 1, LLC CSG	Vermilion Solar 1, LLC	Danville, IL	4 GWh	Nov 2020	Dec 2023	Solar
Univ Minnesota CHP Plant	Veolia Energy	Minneapolis, MN	174 GWh	Oct 2017	Dec 2023	Natural Gas
Venus Wind 3 LLC	Venus Wind 3 LLC	Grinnell, IA	5 GWh	Feb 2017	Dec 2023	Wind
Vega Community Solar	Vega Community Solar	Glenwood, MN	8 GWh	Sep 2017	Dec 2023	Solar
Valley Queen Cheese	Valley Queen Cheese Factory, Inc.	Milbank, SD	31 MWh	Mar 2002	Dec 2024	Distillate Fuel Oil
Blakely Mountain	USCE -Vickburg District	Royal, AR	235 GWh	Aug 1955	Dec 2023	Water
Degray	USCE -Vickburg District	Arkadelphia, AR	157 GWh	Jan 1972	Feb 2025	Water
Robert D Willis	USACE-Fort Worth District	Jasper, TX	4 GWh	Nov 1989	Dec 2023	Water
Sam Rayburn Dam	USACE-Fort Worth District	Jasper, TX	107 GWh	Aug 1965	Dec 2023	Water
Saint Marys Falls	USACE-Detroit District	Sault Ste. Marie, MI	163 GWh	Jun 1932	Dec 2023	Water
Ursa Community Solar	Ursa Community Solar	Farmington, MN	8 GWh	Dec 2016	Dec 2023	Solar
Hoist	Upper Peninsula Power Company	Negaunee, MI	16 GWh	Jan 1988	Dec 2023	Water
McClure Dam	Upper Peninsula Power Company	Marquette, MI	42 GWh	Jan 1988	Dec 2023	Water
Victoria Dam	Upper Peninsula Power Company	Rockland, MI	53 GWh	Dec 1930	Dec 2023	Water
Prickett	Upper Peninsula Power Company	Pelkie, MI	8 GWh	Oct 1931	Dec 2023	Water
A.J. Mihm Generating Station	Upper Michigan Energy Resources Company	Pelkie, MI	208 GWh	Feb 2019	Dec 2023	Natural Gas
F.D. Kuester Generating Station	Upper Michigan Energy Resources Company	Negaunee, MI	490 GWh	Feb 2019	Dec 2023	Natural Gas
University of Northern Iowa	University of Northern Iowa	Cedar Falls, IA	22 GWh	Oct 1982	Feb 2025	Natural Gas : 68.2% Petroleum Coke : 23.1% Bituminous Coal : 8.6%
WCROC Wind Farm	University of Minnesota WCROC	Morris, MN	5 GWh	Feb 2005	Dec 2023	Wind
UMM Wind Turbine	University of Minnesota Morris Campus	Morris, MN	4 GWh	May 2011	Dec 2022	Wind
Warner Lambert	University of Michigan NCampus Research	Ann Arbor, MI	23 GWh	Jul 1989	Feb 2025	Natural Gas
University of Michigan	University of Michigan	Ann Arbor, MI	222 GWh	Dec 1974	Jan 2025	Natural Gas
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 Illinois Abbott Power Plt	University of Illinois	Champaign, IL	235 GWh	Oct 1940	Dec 2023	Natural Gas : 95.7% Bituminous Coal : 4.3%
Gary Works	United States Steel-Gary	Gary, IN	759 GWh	Mar 1997	Feb 2025	Natural Gas : 50.1% Blast Furnace Gas : 49.9%
Granite City Works	United States Steel Granite City Works	Granite City, IL	480 GWh	May 2010	Feb 2025	Natural Gas : 50.8% Purchased Steam : 49.2%

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