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	Jan 2026
Annual Generation	656.9 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 \| 35.4% Coal \| 28.9% Wind \| 15.1% Nuclear \| 14% Solar \| 4.6% Water \| 1.5% Other Fuel \| 0.6%

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
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
Winfield Solar	Winfield Solar I, LLC	Winfield, MO	160 GWh	-	Oct 2025	Solar
Winnebago County Landfill Gas	Winnebago County	Oshkosh, WI	9 GWh	Jan 2000	Dec 2024	Landfill Gas
Winona Garden	Winona Garden LLC	Altura, MN	2 GWh	Oct 2023	Dec 2024	Solar
Winona Solar	Winona Solar I LLC	Altura, MN	2 GWh	Jul 2019	Dec 2024	Solar
Wiota	Wiota Wind Energy, LLC #1	Wiota, IA	4 GWh	Apr 2012	Dec 2024	Wind
Rothschild Biomass Cogen Facility	Wisconsin Electric Power Co	Rothschild, WI	153 GWh	Oct 2013	Dec 2024	Wood/Wood Waste Solids : 97.4% Natural Gas : 2.6%
Badger Hollow II	Wisconsin Electric Power Co	Cobb, WI	198 GWh	Nov 2023	Oct 2025	Solar
Twin Falls (WI)	Wisconsin Electric Power Co	Florence, WI	31 GWh	Jun 2016	Dec 2024	Water
Valley (WI)	Wisconsin Electric Power Co	Milwaukee, WI	357 GWh	May 1968	Oct 2025	Natural Gas
Whitewater Generating Station	Wisconsin Electric Power Co	Whitewater, WI	863 GWh	Aug 1997	Sep 2025	Natural Gas
Paris (WI)	Wisconsin Electric Power Co	Union Grove, WI	227 GWh	Feb 1995	Dec 2024	Natural Gas
Montfort Wind Energy Center	Wisconsin Electric Power Co	Montfort, WI	54 GWh	May 2002	Oct 2025	Wind
Brule	Wisconsin Electric Power Co	Florence, WI	16 GWh	Dec 1918	Dec 2024	Water
Big Quinnesec 92	Wisconsin Electric Power Co	Iron Mountain, MI	89 GWh	Oct 1949	Dec 2024	Water
Concord	Wisconsin Electric Power Co	Watertown, WI	175 GWh	Jun 1993	Dec 2024	Natural Gas : 99.8%
Big Quinnesec 61	Wisconsin Electric Power Co	Iron Mountain, MI	4 GWh	Apr 1914	Dec 2024	Water
Pine	Wisconsin Electric Power Co	Florence, WI	10 GWh	May 1922	Dec 2024	Water
Appleton	Wisconsin Electric Power Co	Appleton, WI	6 GWh	Jul 1916	Dec 2024	Water
Germantown	Wisconsin Electric Power Co	Germantown, WI	28 GWh	Jun 1978	Dec 2024	Natural Gas : 94.1% Distillate Fuel Oil : 5.9%
Chalk Hill	Wisconsin Electric Power Co	Stephenson, MI	14 GWh	Apr 1927	Dec 2024	Water
Hemlock Falls	Wisconsin Electric Power Co	Crystal Falls, MI	6 GWh	Jul 1953	Dec 2024	Water
Port Washington Generating Station	Wisconsin Electric Power Co	Port Washington, WI	7 TWh	Jun 2005	Oct 2025	Natural Gas
Blue Sky Green Field Wind Project	Wisconsin Electric Power Co	Fond du Lac, WI	332 GWh	Apr 2008	Oct 2025	Wind
Elm Road Generating Station	Wisconsin Electric Power Co	Oak Creek, WI	7 TWh	Jan 2010	Oct 2025	Subbituminous Coal : 79.4% Bituminous Coal : 17.5% Natural Gas : 3.1%
Kingsford	Wisconsin Electric Power Co	Kingsford, MI	25 GWh	Apr 1924	Dec 2024	Water
Glacier Hills	Wisconsin Electric Power Co	Cambria, WI	361 GWh	Nov 2011	Oct 2025	Wind
White Rapids	Wisconsin Electric Power Co	Stephenson, MI	30 GWh	Sep 1927	Dec 2024	Water
Peavy Falls	Wisconsin Electric Power Co	Crystal Falls, MI	37 GWh	Dec 1942	Dec 2024	Water
Michigamme Falls	Wisconsin Electric Power Co	Crystal Falls, MI	23 GWh	May 1953	Dec 2024	Water
South Oak Creek	Wisconsin Electric Power Co	Oak Creek, WI	2 TWh	Nov 1959	Oct 2025	Subbituminous Coal : 99.7%
Way Dam	Wisconsin Electric Power Co	Crystal Falls, MI	5 GWh	Nov 1949	Dec 2024	Water
Darien Solar	Wisconsin Electric Power Co	Darien, WI	292 GWh	-	Oct 2025	Solar
ATI	Wisconsin Electric Power Co	Cudahy, WI	4 GWh	Oct 2020	Dec 2024	Solar
CREE	Wisconsin Electric Power Co	Racine, WI	2 GWh	Jul 2021	Dec 2024	Solar
Jones Dairy	Wisconsin Electric Power Co	Fort Atkinson, WI	4 GWh	Jun 2021	Dec 2024	Solar
Regal Ware	Wisconsin Electric Power Co	West Bend, WI	3 GWh	Mar 2021	Dec 2024	Solar
Washington County	Wisconsin Electric Power Co	West Bend, WI	4 GWh	Dec 2019	Dec 2024	Solar
UW Parkside	Wisconsin Electric Power Co	Kenosha, WI	4 GWh	Oct 2020	Dec 2024	Solar
Lannon Stone	Wisconsin Electric Power Co	Pewaukee, WI	4 GWh	Nov 2021	Dec 2024	Solar
Paris Solar	Wisconsin Electric Power Co	Union Grove, WI	279 GWh	Nov 2024	Oct 2025	Solar
City of Milwaukee Landfill	Wisconsin Electric Power Co	Milwaukee, WI	4 GWh	Jan 2021	Dec 2024	Solar
Harley-Davison Powertrain Operations	Wisconsin Electric Power Co	Menomonee Falls, WI	3 GWh	Sep 2020	Dec 2024	Solar
Auburn Solar WI, LLC	Wisconsin Electric Power Co	Campbellsport, WI	80 MWh	Nov 2024	Dec 2024	Solar
Bonduel Solar WI, LLC	Wisconsin Electric Power Co	Bonduel, WI	1 GWh	Nov 2023	Feb 2024	Solar
Hackbarth Solar WI, LLC	Wisconsin Electric Power Co	Fort Atkinson, WI	30 MWh	Nov 2024	Dec 2024	Solar
LaFayette Solar WI, LLC	Wisconsin Electric Power Co	Elkhorn, WI	15 MWh	Nov 2024	Dec 2024	Solar
Jackson Solar WI, LLC	Wisconsin Electric Power Co	Cedarburg, WI	4 GWh	Nov 2023	May 2024	Solar
Silver Lake Solar WI, LLC	Wisconsin Electric Power Co	Salem, WI	2 GWh	Nov 2023	May 2024	Solar
Spring Prairie Solar WI, LLC	Wisconsin Electric Power Co	Burlington, WI	4 GWh	Nov 2023	May 2024	Solar
Springfield Solar (WI)	Wisconsin Power & Light Co	Lomira, WI	199 GWh	Nov 2023	Oct 2025	Solar
Albany Solar (WI)	Wisconsin Power & Light Co	Broadhead, WI	97 GWh	Nov 2023	Oct 2025	Solar
Paddock Solar	Wisconsin Power & Light Co	Beloit, WI	133 GWh	Oct 2023	Oct 2025	Solar
Wautoma Solar	Wisconsin Power & Light Co	Wautoma, WI	185 GWh	Nov 2023	Oct 2025	Solar
Beaver Dam Solar	Wisconsin Power & Light Co	Dodge, WI	99 GWh	Nov 2023	Oct 2025	Solar
Cassville Solar	Wisconsin Power & Light Co	Cassville, WI	96 GWh	Nov 2023	Oct 2025	Solar
Grant County	Wisconsin Power & Light Co	Town of Potosi, WI	369 GWh	Apr 2024	Oct 2025	Solar
Kohler Solar	Wisconsin Power & Light Co	Kohler, WI	3 GWh	May 2022	Dec 2024	Solar
Onion River	Wisconsin Power & Light Co	Sheboygan Cedar Grove, WI	251 GWh	Nov 2023	Oct 2025	Solar
Crawfish River	Wisconsin Power & Light Co	Jefferson, WI	130 GWh	Nov 2023	Oct 2025	Solar
Wood County	Wisconsin Power & Light Co	Nekoosa, WI	276 GWh	Nov 2022	Oct 2025	Solar
North Rock	Wisconsin Power & Light Co	Edgerton, WI	99 GWh	Sep 2022	Oct 2025	Solar
Bear Creek (WI)	Wisconsin Power & Light Co	Lone Rock, WI	99 GWh	Aug 2022	Oct 2025	Solar
Kossuth	Wisconsin Power & Light Co	Lu Verne, IA	524 GWh	Sep 2020	Oct 2025	Wind
West Riverside Energy Center	Wisconsin Power & Light Co	Beloit, WI	4 TWh	Apr 2020	Oct 2025	Natural Gas : 99.9%
Bent Tree Wind Farm Phase 1	Wisconsin Power & Light Co	Hartland, MN	343 GWh	Jan 2011	Dec 2024	Wind
Alliant Energy Neenah	Wisconsin Power & Light Co	Neenah, WI	740 GWh	Apr 2000	Dec 2024	Natural Gas
Columbia (WI)	Wisconsin Power & Light Co	Pardeville, WI	6 TWh	Apr 1975	Oct 2025	Subbituminous Coal : 99.9%
Sheboygan Falls	Wisconsin Power & Light Co	Sheboygan, WI	642 GWh	May 2005	Dec 2024	Natural Gas
South Fond Du Lac	Wisconsin Power & Light Co	Fond du Lac, WI	5 GWh	Apr 1993	Dec 2024	Natural Gas : 98.0% Distillate Fuel Oil : 2.0%
Edgewater	Wisconsin Power & Light Co	Sheboygan, WI	2 TWh	Jun 1951	Oct 2025	Subbituminous Coal : 99.9%
Cedar Ridge	Wisconsin Power & Light Co	Eden, WI	175 GWh	Nov 2008	Dec 2024	Wind
Riverside Energy Center	Wisconsin Power & Light Co	Beloit, WI	3 TWh	May 2004	Oct 2025	Natural Gas
Prairie Du Sac	Wisconsin Power & Light Co	Prairie du Sac, WI	144 GWh	Sep 1915	Dec 2024	Water
Kilbourn	Wisconsin Power & Light Co	Wisconsin Dells, WI	58 GWh	Jun 1926	Dec 2024	Water
Tomahawk	Wisconsin Public Service Corp	Tomahawk, WI	11 GWh	Dec 1937	Dec 2024	Water
Fox Energy Center	Wisconsin Public Service Corp	Wrightstown, WI	4 TWh	May 2005	Oct 2025	Natural Gas
Forward Wind Energy Center	Wisconsin Public Service Corp	Brownsville, WI	138 GWh	Jun 2008	Oct 2025	Wind
Johnson Falls	Wisconsin Public Service Corp	Town of Stephenson, WI	10 GWh	Jun 1923	Dec 2024	Water
Grand Rapids	Wisconsin Public Service Corp	Ingalls, MI	32 GWh	May 1918	Dec 2024	Water
Pulliam	Wisconsin Public Service Corp	Green Bay, WI	111 GWh	Aug 1949	Oct 2025	Natural Gas
Potato Rapids	Wisconsin Public Service Corp	Town of Porterfield, WI	4 GWh	Apr 1921	Dec 2024	Water
Weston	Wisconsin Public Service Corp	Rothschild, WI	5 TWh	Nov 1954	Oct 2025	Subbituminous Coal : 99.4% Natural Gas : 0.6%
Sandstone Rapids	Wisconsin Public Service Corp	Town of Stephenson, WI	9 GWh	Dec 1924	Dec 2024	Water
Merrill	Wisconsin Public Service Corp	Merrill, WI	4 GWh	Feb 1917	Dec 2024	Water
High Falls (WI)	Wisconsin Public Service Corp	Town of Stephenson, WI	16 GWh	Jul 1910	Dec 2024	Water
Wausau	Wisconsin Public Service Corp	Wausau, WI	19 GWh	Feb 1921	Dec 2024	Water
West Marinette	Wisconsin Public Service Corp	Peshtigo, WI	31 GWh	May 1971	Dec 2024	Natural Gas
De Pere Energy Center	Wisconsin Public Service Corp	De Pere, WI	138 GWh	May 1999	Dec 2024	Natural Gas : 68.9% Distillate Fuel Oil : 31.1%
Crane Creek Wind Energy Center	Wisconsin Public Service Corp	Riceville, IA	302 GWh	Nov 2009	Dec 2024	Wind
Hat Rapids	Wisconsin Public Service Corp	Rhinelander, WI	6 GWh	May 1923	Dec 2024	Water
Grandfather Falls	Wisconsin Public Service Corp	Irma, WI	80 GWh	Nov 1938	Dec 2024	Water
Caldron Falls	Wisconsin Public Service Corp	Town of Stephenson, WI	14 GWh	Oct 1924	Dec 2024	Water
Alexander	Wisconsin Public Service Corp	Merrill, WI	19 GWh	Dec 1924	Dec 2024	Water
Hodag Solar	Wisconsin Public Service Corp	Rhinelander, WI	13 GWh	Dec 2021	Dec 2024	Solar
Weston RICE	Wisconsin Public Service Corp	Kronenwetter, WI	85 GWh	Jun 2023	Dec 2024	Natural Gas
Red Barn Energy	Wisconsin Public Service Corp	Montfort, WI	247 GWh	Mar 2023	Oct 2025	Wind
Antigo-Forrest Street Solar Project	Wisconsin Public Service Corp	Antigo, WI	279 MWh	Oct 2024	Dec 2024	Solar
Badger Hollow I	Wisconsin Public Service Corp	Montfort, WI	192 GWh	Oct 2021	Oct 2025	Solar

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#60	Alcoa Power Generating, Inc. - Yadkin Division	643.5 GWh	4
#27	Associated Electric Cooperative, Inc.	23.9 TWh	47
#13	Duke Energy Carolinas	111.6 TWh	565
#52	Duke Energy Progress West	4.3 TWh	10
#24	Louisville Gas and Electric Company and Kentucky Utilities Company	34.2 TWh	25
#1	PJM Interconnection, LLC	872.9 TWh	2,465
#6	Southern Company Services, Inc. - Trans	249.9 TWh	417
#5	Southwest Power Pool	300.6 TWh	835
#51	Southwestern Power Administration	5.0 TWh	34
#9	Tennessee Valley Authority	161.0 TWh	204

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#1	PJM Interconnection, LLC	872.9 TWh	2,465
#2	Midcontinent Independent System Operator, Inc.	656.9 TWh	2,831
#3	Electric Reliability Council of Texas, Inc.	484.7 TWh	1,313
#5	Southwest Power Pool	300.6 TWh	835
#6	Southern Company Services, Inc. - Trans	249.9 TWh	417
#7	California Independent System Operator	184.8 TWh	2,075
#9	Tennessee Valley Authority	161.0 TWh	204
#10	Florida Power & Light Co.	149.6 TWh	187
#12	New York Independent System Operator	132.6 TWh	1,211
#13	Duke Energy Carolinas	111.6 TWh	565