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	Jun 2025
Annual Generation	642.8 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 \| 36.6% Coal \| 28.1% Wind \| 15.6% Nuclear \| 14.4% Solar \| 3.2% Water \| 1.7% Other Fuel \| 0.4%

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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
Elm Road Generating Station	Wisconsin Electric Power Co	Oak Creek, WI	8 TWh	Jan 2010	Mar 2025	Subbituminous Coal : 72.3% Bituminous Coal : 17.5% Natural Gas : 10.2%
LSP-Whitewater LP	Wisconsin Electric Power Co	Whitewater, WI	903 GWh	Aug 1997	Mar 2025	Natural Gas
Port Washington Generating Station	Wisconsin Electric Power Co	Port Washington, WI	7 TWh	Jun 2005	Mar 2025	Natural Gas
Glacier Hills	Wisconsin Electric Power Co	Cambria, WI	390 GWh	Nov 2011	Mar 2025	Wind
Germantown	Wisconsin Electric Power Co	Germantown, WI	13 GWh	Jun 1978	Dec 2023	Natural Gas : 85.3% Distillate Fuel Oil : 14.7%
Brule	Wisconsin Electric Power Co	Florence, WI	16 GWh	Dec 1918	Dec 2023	Water
Kingsford	Wisconsin Electric Power Co	Kingsford, MI	25 GWh	Apr 1924	Dec 2023	Water
Hemlock Falls	Wisconsin Electric Power Co	Crystal Falls, MI	10 GWh	Jul 1953	Dec 2023	Water
Chalk Hill	Wisconsin Electric Power Co	Stephenson, MI	30 GWh	Apr 1927	Dec 2023	Water
Michigamme Falls	Wisconsin Electric Power Co	Crystal Falls, MI	33 GWh	May 1953	Dec 2023	Water
Badger Hollow II	Wisconsin Electric Power Co	Cobb, WI	200 GWh	Nov 2023	Mar 2025	Solar
Darien Solar	Wisconsin Electric Power Co	Darien, WI	30 GWh	-	Mar 2025	Solar
Washington County	Wisconsin Electric Power Co	West Bend, WI	4 GWh	Dec 2019	Dec 2023	Solar
UW Parkside	Wisconsin Electric Power Co	Kenosha, WI	4 GWh	Oct 2020	Dec 2023	Solar
Lannon Stone	Wisconsin Electric Power Co	Pewaukee, WI	3 GWh	Nov 2021	Dec 2023	Solar
Paris Solar	Wisconsin Electric Power Co	Union Grove, WI	60 GWh	-	Mar 2025	Solar
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
Harley-Davison Powertrain Operations	Wisconsin Electric Power Co	Menomonee Falls, WI	3 GWh	Sep 2020	Dec 2023	Solar
City of Milwaukee Landfill	Wisconsin Electric Power Co	Milwaukee, WI	4 GWh	Jan 2021	Dec 2023	Solar
ATI	Wisconsin Electric Power Co	Cudahy, WI	4 GWh	Oct 2020	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%
Westlake Plaquemine	Westlake Chemicals & Vinyls LLC	Plaquemine, LA	2 TWh	Apr 1997	Mar 2025	Natural Gas : 97.8% Other Gas : 2.2%
RS Cogen	Westlake 2 US LLC	Lake Charles, LA	2 TWh	Nov 2002	Mar 2025	Natural Gas
PPG Plant C Caustic	Westlake 2 US LLC	Lake Charles, LA	6 GWh	Sep 1986	Dec 2023	Natural Gas
PPG Powerhouse C	Westlake 2 US LLC	Lake Charles, LA	2 TWh	Jul 1977	Mar 2025	Natural Gas : 99.2% Other Gas : 0.8%
PPG Riverside	Westlake 2 US LLC	Lake Charles, LA	111 GWh	Aug 1947	Nov 2024	Purchased Steam
Red Rock Hydro Plant	Western Minnesota Mun Pwr Agny	Pella, IA	146 GWh	Apr 2021	Mar 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	90 GWh	-	Mar 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 Community Wind Project	Waverly Municipal Elec Utility	Waverly, IA	6 GWh	Nov 2001	Dec 2023	Wind
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%
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	Mar 2025	Solar
Walnut Bend Solar Station PV	Walnut Bend Solar Station	Moro, AR	92 GWh	-	Mar 2025	Solar
Walleye Wind	Walleye Wind, LLC	Beaver Creek, MN	497 GWh	Nov 2022	Mar 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
Wabash Valley Power IGCC	Wabash Valley Power Assn, Inc	Terre Haute, IN	432 GWh	Nov 1953	Mar 2025	Natural Gas
Deercroft I & II LFGTE	Wabash Valley Power Assn, Inc	Michigan City, IN	17 GWh	Jul 1999	Dec 2023	Landfill Gas
Prairie View I & II LFGTE	Wabash Valley Power Assn, Inc	Wyatt, IN	31 GWh	Sep 1994	Dec 2023	Landfill Gas
Twin Bridges LFGTE	Wabash Valley Power Assn, Inc	Danville, IN	6 GWh	Sep 1994	Dec 2023	Landfill Gas
Clinton LFGTE	Wabash Valley Power Assn, Inc	Clinton, IL	12 GWh	Jan 2006	Mar 2025	Landfill 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
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	149 MWh	Dec 1950	Mar 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	Mar 2025	Distillate Fuel Oil
Blakely Mountain	USCE -Vickburg District	Royal, AR	235 GWh	Aug 1955	Dec 2023	Water
Degray	USCE -Vickburg District	Arkadelphia, AR	158 GWh	Jan 1972	Mar 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
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
Hoist	Upper Peninsula Power Company	Negaunee, MI	16 GWh	Jan 1988	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	Mar 2025	Natural Gas : 68.6% Petroleum Coke : 22.8% Bituminous Coal : 8.4%
WCROC Wind Farm	University of Minnesota WCROC	Morris, MN	5 GWh	Feb 2005	Dec 2023	Wind
Warner Lambert	University of Michigan NCampus Research	Ann Arbor, MI	23 GWh	Jul 1989	Mar 2025	Natural Gas
University of Michigan	University of Michigan	Ann Arbor, MI	204 GWh	Dec 1974	Mar 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	766 GWh	Mar 1997	Mar 2025	Blast Furnace Gas : 50.6% Natural Gas : 49.3%
Granite City Works	United States Steel Granite City Works	Granite City, IL	467 GWh	May 2010	Mar 2025	Natural Gas : 50.8% Purchased Steam : 49.2%
USS Catfish Solar LLC	United States Solar Corporation	Franklin, MN	2 GWh	Dec 2022	Dec 2023	Solar
USS Franklin Solar LLC	United States Solar Corporation	Franklin, MN	2 GWh	Dec 2022	Dec 2023	Solar

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#61	Alcoa Power Generating, Inc. - Yadkin Division	734.7 GWh	4
#27	Associated Electric Cooperative, Inc.	22.8 TWh	47
#13	Duke Energy Carolinas	111.4 TWh	556
#52	Duke Energy Progress West	4.1 TWh	10
#24	Louisville Gas and Electric Company and Kentucky Utilities Company	33.8 TWh	20
#1	PJM Interconnection, LLC	858.1 TWh	2,305
#20	Public Service Company of Colorado	48.7 TWh	201
#5	Southwest Power Pool	297.0 TWh	762
#51	Southwestern Power Administration	4.2 TWh	31
#8	Tennessee Valley Authority	158.8 TWh	170

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#1	PJM Interconnection, LLC	858.1 TWh	2,305
#2	Midcontinent Independent System Operator, Inc.	642.8 TWh	2,653
#3	Electric Reliability Council of Texas, Inc.	476.4 TWh	1,139
#5	Southwest Power Pool	297.0 TWh	762
#6	Southern Company Services, Inc. - Trans	252.0 TWh	393
#7	California Independent System Operator	190.4 TWh	1,943
#8	Tennessee Valley Authority	158.8 TWh	170
#10	Florida Power & Light Co.	148.6 TWh	159
#12	New York Independent System Operator	130.6 TWh	1,100
#13	Duke Energy Carolinas	111.4 TWh	556