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	Mar 2026
Annual Generation	659.4 TWh
Power Plants	2,831
Utilities	1,296
Ranked #2 out of 65 in terms of net annual generation
Ranked #2 out of 54 in terms of annual generation from natural gas
Power Plant Types	Natural Gas \| 36.2% Coal \| 28.4% Wind \| 14.7% Nuclear \| 13.9% Solar \| 4.8% 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

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Plant Name	Utility	Location	Annual Generation	Plant Date	Last Update	Fuel Types
Zumbro Community Solar Garden	Zumbro Solar LLC	Zumbrota, MN	2 GWh	Mar 2018	Dec 2024	Solar
Zumbro Solar Garden	Zumbro Garden LLC	Kasson, MN	2 GWh	Mar 2020	Dec 2024	Solar
Zeeland Farm Services	Zeeland Farm Services	Zeeland, MI	13 GWh	Feb 2006	Dec 2023	Other Biomass Gas
Wyandotte	Wyandotte Municipal Serv Comm	Wyandotte, MI	53 MWh	Dec 1947	Dec 2025	Distillate Fuel Oil
Island Street Peaking Plant	WPPI Energy	Kaukauna, WI	11 GWh	May 2004	Dec 2024	Natural Gas
Workman Road Solar Farm, LLC	Workman Road Solar Farm, LLC	Lake City, MI	4 GWh	Nov 2020	Dec 2024	Solar
Wolverine	Wolverine Wind Energy, LLC	Greenfield, IA	5 GWh	Sep 2010	Dec 2024	Wind
Wolverine Solar	Wolverine Solar, LLC	Maynard, MN	2 GWh	Oct 2023	Dec 2024	Solar
Vestaburg	Wolverine Power Supply Coop	Vestaburg, MI	2 GWh	Dec 1958	Dec 2024	Natural Gas
Claude Vandyke	Wolverine Power Supply Coop	Dorr, MI	5 GWh	Dec 1966	Dec 2024	Natural Gas
George Johnson	Wolverine Power Supply Coop	Hersey, MI	34 GWh	Aug 1993	Dec 2024	Natural Gas
Tower	Wolverine Power Supply Coop	Tower, MI	62 MWh	Feb 1971	Dec 2024	Distillate Fuel Oil
Gaylord - Wolverine	Wolverine Power Supply Coop	Gaylord, MI	23 GWh	May 2001	Dec 2024	Natural Gas
Sumpter	Wolverine Power Supply Coop	Belleville, MI	190 GWh	Jun 2002	Dec 2024	Natural Gas
Alpine Power Plant	Wolverine Power Supply Coop	Elmira, MI	499 GWh	May 2016	Dec 2024	Natural Gas
Wollan Garden Solar	Wollan Garden LLC	Starbuck, MN	1 GWh	Jun 2019	Dec 2024	Solar
Wolf Run Solar	Wolf Run Solar LLC	Chapin, IL	314 GWh	Oct 2024	Dec 2025	Solar
Pine Tree Acres WM LFGTE	WM Renewable Energy LLC	Lenox, MI	88 GWh	Feb 2012	Dec 2025	Landfill Gas
Eagle Valley (MI)	WM Renewable Energy LLC	Orion, MI	23 GWh	Jun 2011	Dec 2024	Landfill Gas
Venice Resources Gas Recovery	WM Renewable Energy LLC	Lennon, MI	11 GWh	Feb 1992	Dec 2024	Landfill Gas
Metro Gas Recovery	WM Renewable Energy LLC	Franklin, WI	37 GWh	Nov 1985	Dec 2024	Landfill Gas
Omega Hills Gas Recovery	WM Renewable Energy LLC	Germantown, WI	79 GWh	Nov 1985	Dec 2025	Landfill Gas
Spruce Ridge Gas Recovery	WM Renewable Energy LLC	Glencoe, MN	22 GWh	Mar 2008	Dec 2024	Landfill Gas
Waste Management Northern Oaks LFGTE	WM Renewable Energy LLC	Harrison, MI	6 GWh	Oct 2010	Dec 2024	Landfill Gas
Waste Management Eco Vista LFGTE	WM Renewable Energy LLC	Springdale, AR	22 GWh	Oct 2010	Dec 2024	Natural Gas
Five Oaks Gas Recovery	WM Renewable Energy LLC	Taylorville, IL	24 GWh	Jan 2008	Dec 2024	Landfill Gas
Timberline Trail Gas Recovery	WM Renewable Energy LLC	Weyerhaeser, WI	19 GWh	Jan 2006	Dec 2024	Landfill Gas
Ridgeview	WM Renewable Energy LLC	Whitelaw, WI	36 GWh	Aug 2002	Dec 2024	Landfill Gas
Pheasant Run Landfill Gas Recovery	WM Renewable Energy LLC	Bristol, WI	48 GWh	Jan 1992	Dec 2024	Landfill Gas
Berlin Landfill Gas	WM Renewable Energy LLC	Berlin, WI	14 GWh	Jul 2001	Dec 2024	Landfill Gas
Metro Methane Recovery Facility	WM Renewable Energy LLC	Mitchellville, IA	83 GWh	Dec 1997	Dec 2025	Landfill Gas
Deertrack Park Gas Recovery	WM Renewable Energy LLC	Watertown, WI	37 GWh	Jan 2006	Dec 2024	Landfill Gas
Lake Mills Gas Recovery	WM Renewable Energy LLC	Lake Mills, IA	25 GWh	Feb 2006	Dec 2024	Landfill Gas
Two Pine Landfill Gas Recovery	WM Renewable Energy LLC	North Little Rock, AR	27 GWh	Sep 2006	Dec 2024	Landfill Gas
Tazewell Gas Recovery	WM Illinois Renewable Energy LLC	East Peoria, IL	13 GWh	Jun 1989	Dec 2024	Landfill Gas
Milam Gas Recovery	WM Illinois Renewable Energy LLC	East St. Lois, IL	19 GWh	Mar 1991	Dec 2024	Natural Gas
Castle Rock	Wisconsin River Power Company	Adams, WI	92 GWh	Jul 1950	Dec 2024	Water
Petenwell	Wisconsin River Power Company	Necedah, WI	108 GWh	Jul 1949	Dec 2024	Water
Fox Energy Center	Wisconsin Public Service Corp	Wrightstown, WI	4 TWh	May 2005	Dec 2025	Natural Gas
Forward Wind Energy Center	Wisconsin Public Service Corp	Brownsville, WI	135 GWh	Jun 2008	Dec 2025	Wind
Weston	Wisconsin Public Service Corp	Rothschild, WI	5 TWh	Nov 1954	Dec 2025	Subbituminous Coal : 99.4% Natural Gas : 0.6%
Crane Creek Wind Energy Center	Wisconsin Public Service Corp	Riceville, IA	302 GWh	Nov 2009	Dec 2024	Wind
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%
Tomahawk	Wisconsin Public Service Corp	Tomahawk, WI	11 GWh	Dec 1937	Dec 2024	Water
Grandfather Falls	Wisconsin Public Service Corp	Irma, WI	80 GWh	Nov 1938	Dec 2024	Water
Hat Rapids	Wisconsin Public Service Corp	Rhinelander, WI	6 GWh	May 1923	Dec 2024	Water
High Falls (WI)	Wisconsin Public Service Corp	Town of Stephenson, WI	16 GWh	Jul 1910	Dec 2024	Water
Johnson Falls	Wisconsin Public Service Corp	Town of Stephenson, WI	10 GWh	Jun 1923	Dec 2024	Water
Merrill	Wisconsin Public Service Corp	Merrill, WI	4 GWh	Feb 1917	Dec 2024	Water
Grand Rapids	Wisconsin Public Service Corp	Ingalls, MI	32 GWh	May 1918	Dec 2024	Water
Alexander	Wisconsin Public Service Corp	Merrill, WI	19 GWh	Dec 1924	Dec 2024	Water
Caldron Falls	Wisconsin Public Service Corp	Town of Stephenson, WI	14 GWh	Oct 1924	Dec 2024	Water
Potato Rapids	Wisconsin Public Service Corp	Town of Porterfield, WI	4 GWh	Apr 1921	Dec 2024	Water
Pulliam	Wisconsin Public Service Corp	Green Bay, WI	110 GWh	Aug 1949	Dec 2025	Natural Gas
Sandstone Rapids	Wisconsin Public Service Corp	Town of Stephenson, WI	9 GWh	Dec 1924	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
Antigo-Forrest Street Solar Project	Wisconsin Public Service Corp	Antigo, WI	279 MWh	Oct 2024	Dec 2024	Solar
Weston RICE	Wisconsin Public Service Corp	Kronenwetter, WI	85 GWh	Jun 2023	Dec 2024	Natural Gas
Hodag Solar	Wisconsin Public Service Corp	Rhinelander, WI	13 GWh	Dec 2021	Dec 2024	Solar
Red Barn Energy	Wisconsin Public Service Corp	Montfort, WI	254 GWh	Mar 2023	Dec 2025	Wind
Two Creeks Solar	Wisconsin Public Service Corp	Two Rivers, WI	192 GWh	Oct 2020	Dec 2025	Solar
Badger Hollow I	Wisconsin Public Service Corp	Montfort, WI	204 GWh	Oct 2021	Dec 2025	Solar
West Riverside Energy Center	Wisconsin Power & Light Co	Beloit, WI	4 TWh	Apr 2020	Dec 2025	Natural Gas : 99.9%
Kossuth	Wisconsin Power & Light Co	Lu Verne, IA	533 GWh	Sep 2020	Dec 2025	Wind
Prairie Du Sac	Wisconsin Power & Light Co	Prairie du Sac, WI	144 GWh	Sep 1915	Dec 2024	Water
Alliant Energy Neenah	Wisconsin Power & Light Co	Neenah, WI	740 GWh	Apr 2000	Dec 2024	Natural Gas
Cedar Ridge	Wisconsin Power & Light Co	Eden, WI	175 GWh	Nov 2008	Dec 2024	Wind
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%
Bent Tree Wind Farm Phase 1	Wisconsin Power & Light Co	Hartland, MN	343 GWh	Jan 2011	Dec 2024	Wind
Sheboygan Falls	Wisconsin Power & Light Co	Sheboygan, WI	642 GWh	May 2005	Dec 2024	Natural Gas
Columbia (WI)	Wisconsin Power & Light Co	Pardeville, WI	6 TWh	Apr 1975	Dec 2025	Subbituminous Coal : 99.9%
Riverside Energy Center	Wisconsin Power & Light Co	Beloit, WI	3 TWh	May 2004	Dec 2025	Natural Gas
Kilbourn	Wisconsin Power & Light Co	Wisconsin Dells, WI	58 GWh	Jun 1926	Dec 2024	Water
Edgewater	Wisconsin Power & Light Co	Sheboygan, WI	2 TWh	Jun 1951	Dec 2025	Subbituminous Coal : 99.9%
Albany Solar (WI)	Wisconsin Power & Light Co	Broadhead, WI	98 GWh	Nov 2023	Dec 2025	Solar
Paddock Solar	Wisconsin Power & Light Co	Beloit, WI	135 GWh	Oct 2023	Dec 2025	Solar
Wautoma Solar	Wisconsin Power & Light Co	Wautoma, WI	187 GWh	Nov 2023	Dec 2025	Solar
Beaver Dam Solar	Wisconsin Power & Light Co	Dodge, WI	100 GWh	Nov 2023	Dec 2025	Solar
Grant County	Wisconsin Power & Light Co	Town of Potosi, WI	376 GWh	Apr 2024	Dec 2025	Solar
Onion River	Wisconsin Power & Light Co	Sheboygan Cedar Grove, WI	256 GWh	Nov 2023	Dec 2025	Solar
Bear Creek (WI)	Wisconsin Power & Light Co	Lone Rock, WI	100 GWh	Aug 2022	Dec 2025	Solar
North Rock	Wisconsin Power & Light Co	Edgerton, WI	101 GWh	Sep 2022	Dec 2025	Solar
Wood County	Wisconsin Power & Light Co	Nekoosa, WI	275 GWh	Nov 2022	Dec 2025	Solar
Crawfish River	Wisconsin Power & Light Co	Jefferson, WI	131 GWh	Nov 2023	Dec 2025	Solar
Springfield Solar (WI)	Wisconsin Power & Light Co	Lomira, WI	204 GWh	Nov 2023	Dec 2025	Solar
Cassville Solar	Wisconsin Power & Light Co	Cassville, WI	98 GWh	Nov 2023	Dec 2025	Solar
Kohler Solar	Wisconsin Power & Light Co	Kohler, WI	3 GWh	May 2022	Dec 2024	Solar
Regal Ware	Wisconsin Electric Power Co	West Bend, WI	3 GWh	Mar 2021	Dec 2024	Solar
Jones Dairy	Wisconsin Electric Power Co	Fort Atkinson, WI	4 GWh	Jun 2021	Dec 2024	Solar
CREE	Wisconsin Electric Power Co	Racine, WI	2 GWh	Jul 2021	Dec 2024	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
Darien Solar	Wisconsin Electric Power Co	Darien, WI	315 GWh	-	Dec 2025	Solar
Auburn Solar WI, LLC	Wisconsin Electric Power Co	Campbellsport, WI	80 MWh	Nov 2024	Dec 2024	Solar
ATI	Wisconsin Electric Power Co	Cudahy, WI	4 GWh	Oct 2020	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	296 GWh	Nov 2024	Dec 2025	Solar
Spring Prairie Solar WI, LLC	Wisconsin Electric Power Co	Burlington, WI	4 GWh	Nov 2023	May 2024	Solar

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#60	Alcoa Power Generating, Inc. - Yadkin Division	610.0 GWh	4
#27	Associated Electric Cooperative, Inc.	24.1 TWh	47
#13	Duke Energy Carolinas	112.4 TWh	565
#52	Duke Energy Progress West	4.3 TWh	10
#23	Louisville Gas and Electric Company and Kentucky Utilities Company	34.3 TWh	25
#1	PJM Interconnection, LLC	879.0 TWh	2,465
#6	Southern Company Services, Inc. - Trans	250.9 TWh	417
#5	Southwest Power Pool	300.1 TWh	835
#51	Southwestern Power Administration	4.8 TWh	34
#9	Tennessee Valley Authority	162.4 TWh	204

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#1	PJM Interconnection, LLC	879.0 TWh	2,465
#2	Midcontinent Independent System Operator, Inc.	659.4 TWh	2,831
#3	Electric Reliability Council of Texas, Inc.	484.9 TWh	1,313
#5	Southwest Power Pool	300.1 TWh	835
#6	Southern Company Services, Inc. - Trans	250.9 TWh	417
#7	California Independent System Operator	179.9 TWh	2,075
#9	Tennessee Valley Authority	162.4 TWh	204
#10	Florida Power & Light Co.	150.5 TWh	187
#12	New York Independent System Operator	134.0 TWh	1,211
#13	Duke Energy Carolinas	112.4 TWh	565