Midcontinent Independent System Operator, Inc.

Balancing Authority Summary Information

Midcontinent Independent System Operator, Inc. is ranked #2 out of 64 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	Jul 2026
Annual Generation	669.4 TWh
Power Plants	3,038
Utilities	1,345
Ranked #2 out of 64 in terms of net annual generation
Ranked #2 out of 53 in terms of annual generation from natural gas
Power Plant Types	Natural Gas \| 37% Coal \| 26.5% Wind \| 14.9% Nuclear \| 13.9% Solar \| 5.7% Water \| 1.4% 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

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Plant Name	Utility	Location	Annual Generation	Plant Date	Last Update	Fuel Types
Big Cajun 1	Louisiana Generating LLC	Jarreau, LA	158 GWh	May 1972	Dec 2025	Natural Gas
Alcona	Consumers Energy Co - (MI)	Glennie, MI	26 GWh	Dec 1923	Dec 2025	Water
Allegan Dam	Consumers Energy Co - (MI)	Allegan, MI	12 GWh	Dec 1934	Dec 2025	Water
C W Tippy	Consumers Energy Co - (MI)	Wellston, MI	56 GWh	Dec 1917	Dec 2025	Water
Cooke	Consumers Energy Co - (MI)	Oscoda, MI	24 GWh	Dec 1910	Dec 2025	Water
Croton	Consumers Energy Co - (MI)	Newaygo, MI	29 GWh	Dec 1906	Dec 2025	Water
Five Channels	Consumers Energy Co - (MI)	Oscoda, MI	23 GWh	Dec 1911	Dec 2025	Water
Foote	Consumers Energy Co - (MI)	Oscoda, MI	28 GWh	Dec 1917	Dec 2025	Water
Hardy	Consumers Energy Co - (MI)	Newaygo, MI	65 GWh	May 1931	Dec 2025	Water
Hodenpyl	Consumers Energy Co - (MI)	Mesick, MI	22 GWh	Jun 1925	Dec 2025	Water
Loud	Consumers Energy Co - (MI)	Oscoda, MI	16 GWh	Dec 1912	Dec 2025	Water
Mio	Consumers Energy Co - (MI)	Mio, MI	14 GWh	Dec 1915	Dec 2025	Water
Rogers	Consumers Energy Co - (MI)	Big Rapids, MI	21 GWh	Dec 1921	Dec 2025	Water
Webber	Consumers Energy Co - (MI)	Lyons, MI	10 GWh	Dec 1906	Dec 2025	Water
Colfax	DTE Electric Company	Fowlerville, MI	146 MWh	Oct 1969	Dec 2025	Distillate Fuel Oil
Delray	DTE Electric Company	Detroit, MI	145 GWh	Jan 2000	Dec 2025	Natural Gas
Hancock	DTE Electric Company	Commerce Twp, MI	20 GWh	Mar 1966	Dec 2025	Natural Gas
Northeast (MI)	DTE Electric Company	Warren, MI	15 GWh	Apr 1966	Dec 2025	Natural Gas : 86.8% Distillate Fuel Oil : 13.2%
Placid 12	DTE Electric Company	Clarkston, MI	243 MWh	Oct 1970	Dec 2025	Distillate Fuel Oil
Putnam (MI)	DTE Electric Company	Mayville, MI	129 MWh	May 1971	Dec 2025	Distillate Fuel Oil
Superior	DTE Electric Company	Superior Twp, MI	789 MWh	Sep 1966	Dec 2025	Distillate Fuel Oil
Manistique	Cloverland Electric Co-op	Manistique, MI	1 GWh	Jun 1960	Dec 2025	Distillate Fuel Oil
Edison Sault	Cloverland Electric Co-op	Sault Ste. Marie, MI	181 GWh	Jun 1901	Dec 2025	Water
Saxon Falls	Northern States Power Co - Minnesota	Saxon, WI	9 GWh	Dec 1912	Dec 2025	Water
Superior Falls	Northern States Power Co - Minnesota	Ironwood, MI	8 GWh	Dec 1916	Dec 2025	Water
Prickett	Upper Peninsula Power Company	Pelkie, MI	6 GWh	Oct 1931	Dec 2025	Water
Victoria Dam	Upper Peninsula Power Company	Rockland, MI	54 GWh	Dec 1930	Dec 2025	Water
Brule	Wisconsin Electric Power Co	Florence, WI	12 GWh	Dec 1918	Dec 2025	Water
Chalk Hill	Wisconsin Electric Power Co	Stephenson, MI	34 GWh	Apr 1927	Dec 2025	Water
Kingsford	Wisconsin Electric Power Co	Kingsford, MI	26 GWh	Apr 1924	Dec 2025	Water
Michigamme Falls	Wisconsin Electric Power Co	Crystal Falls, MI	29 GWh	May 1953	Dec 2025	Water
Peavy Falls	Wisconsin Electric Power Co	Crystal Falls, MI	48 GWh	Dec 1942	Dec 2025	Water
Way Dam	Wisconsin Electric Power Co	Crystal Falls, MI	6 GWh	Nov 1949	Dec 2025	Water
White Rapids	Wisconsin Electric Power Co	Stephenson, MI	33 GWh	Sep 1927	Dec 2025	Water
Grand Rapids	Wisconsin Public Service Corp	Ingalls, MI	35 GWh	May 1918	Dec 2025	Water
Crystal Falls	City of Crystal Falls - (MI)	Crystal Falls, MI	5 GWh	May 1914	Dec 2025	Water
Hillsdale	Hillsdale Board of Public Wks	Hillsdale, MI	711 MWh	Feb 1947	Dec 2025	Natural Gas : 81.9% Distillate Fuel Oil : 18.1%
James R Smith	City of Marquette - (MI)	Marquette, MI	14 GWh	Dec 1918	Dec 2025	Water
Marshall (MI)	City of Marshall - (MI)	Marshall, MI	638 MWh	May 1928	Dec 2025	Water
Norway (MI)	City of Norway - (MI)	Norway, MI	30 GWh	May 1905	Dec 2025	Water
Frank Jenkins	City of Portland - (MI)	Portland, MI	195 MWh	Apr 1950	Dec 2025	Distillate Fuel Oil : 81.7% Natural Gas : 18.3%
St Louis	City of St Louis - (MI)	St. Louis, MI	8 MWh	Dec 1918	Dec 2025	Distillate Fuel Oil
Saint Marys Falls	USACE-Detroit District	Sault Ste. Marie, MI	156 GWh	Jun 1932	Dec 2025	Water
Zeeland	City of Zeeland - (MI)	Zeeland, MI	600 MWh	Dec 1956	Dec 2025	Natural Gas : 89.2% Distillate Fuel Oil : 10.8%
Dafter	Cloverland Electric Co-op	Dafter, MI	3 GWh	Oct 1955	Dec 2025	Distillate Fuel Oil
Tower	Wolverine Power Supply Coop	Tower, MI	61 MWh	Feb 1971	Dec 2025	Distillate Fuel Oil
George Johnson	Wolverine Power Supply Coop	Hersey, MI	43 GWh	Aug 1993	Dec 2025	Natural Gas
Claude Vandyke	Wolverine Power Supply Coop	Dorr, MI	8 GWh	Dec 1966	Dec 2025	Natural Gas
Vestaburg	Wolverine Power Supply Coop	Vestaburg, MI	4 GWh	Dec 1958	Dec 2025	Natural Gas
Syl Laskin	ALLETE, Inc.	Hoyt Lakes, MN	196 GWh	May 1953	Dec 2025	Natural Gas
Blanchard	ALLETE, Inc.	Royalton, MN	72 GWh	Jan 1925	Dec 2025	Water
Fond Du Lac	ALLETE, Inc.	Duluth, MN	38 GWh	Dec 1923	Dec 2025	Water
Knife Falls	ALLETE, Inc.	Cloquet, MN	9 GWh	Dec 1921	Dec 2025	Water
Little Falls (MN)	ALLETE, Inc.	Little Falls, MN	27 GWh	Dec 1905	Dec 2025	Water
Pillager	ALLETE, Inc.	Pillager, MN	7 GWh	Dec 1916	Dec 2025	Water
Scanlon	ALLETE, Inc.	Scanlon, MN	7 GWh	Dec 1922	Dec 2025	Water
Sylvan	ALLETE, Inc.	Pillager, MN	10 GWh	Dec 1912	Dec 2025	Water
Thomson	ALLETE, Inc.	Carlton, MN	198 GWh	Dec 1906	Dec 2025	Water
Winton	ALLETE, Inc.	Winton, MN	18 GWh	Jul 1923	Dec 2025	Water
Black Dog	Northern States Power Co - Minnesota	Burnsville, MN	870 GWh	Sep 1954	Dec 2025	Natural Gas
Hennepin Island	Northern States Power Co - Minnesota	Minneapolis, MN	54 GWh	Sep 1954	Dec 2025	Water
Inver Hills	Northern States Power Co - Minnesota	Inver Grove Heights, MN	130 GWh	Mar 1972	Dec 2025	Natural Gas : 98.8% Distillate Fuel Oil : 1.2%
St James	City of St James - (MN)	St James, MN	93 MWh	Jun 2002	Dec 2025	Distillate Fuel Oil
Hoot Lake	Otter Tail Power Co	Fergus Falls, MN	4 GWh	Aug 1914	Dec 2025	Water
Alexandria	City of Alexandria - (MN)	Alexandria, MN	51 MWh	Dec 1947	Dec 2025	Distillate Fuel Oil
Benson City of	City of Benson - (MN)	Benson, MN	114 MWh	Apr 2002	Dec 2025	Distillate Fuel Oil
Blooming Prairie	City of Blooming Prairie - (MN)	Blooming Prairie, MN	246 MWh	Apr 1937	Dec 2025	Distillate Fuel Oil
Delano	Delano Municipal Utilities (MN)	Delano, MN	53 MWh	Sep 1946	Dec 2025	Distillate Fuel Oil
Detroit Lakes	City of Detroit Lakes - (MN)	Detroit Lakes, MN	41 MWh	Jun 1968	Dec 2025	Distillate Fuel Oil
Fairfax	City of Fairfax - (MN)	Fairfax, MN	6 MWh	Jul 2001	Dec 2025	Distillate Fuel Oil
Fairmont (MN)	Southern Minnesota Mun P Agny	Fairmont, MN	8 GWh	Dec 1974	Dec 2025	Natural Gas : 98.8% Distillate Fuel Oil : 1.2%
Glencoe	Glencoe Light & Power Comm	Glencoe, MN	146 MWh	May 1957	Dec 2025	Distillate Fuel Oil : 99.7%
Grand Marais	City of Grand Marais - (MN)	Grand Marais, MN	164 MWh	Jan 2004	Dec 2025	Distillate Fuel Oil
Granite Falls	City of Granite Falls - (MN)	Granite Falls, MN	2 GWh	Jul 1932	Dec 2025	Water
Hibbing	Hibbing Public Utilities Comm	Hibbing, MN	40 GWh	Mar 1965	Dec 2025	Natural Gas : 52.2% Wood/Wood Waste Solids : 46.4% Bituminous Coal : 1.4%
Hutchinson Plant #1	Hutchinson Utilities Comm	Hutchinson, MN	42 GWh	Dec 1957	Dec 2025	Natural Gas
Janesville	City of Janesville - (MN)	Janesville, MN	35 MWh	Apr 1955	Dec 2025	Distillate Fuel Oil : 97.5% Natural Gas : 2.5%
Kenyon Municipal	Kenyon Municipal Utilities - (MN)	Kenyon, MN	19 MWh	Jul 1997	Dec 2025	Distillate Fuel Oil
Lake Crystal	City of Lake Crystal - (MN)	Lake Crystal, MN	21 MWh	Apr 1952	Dec 2025	Distillate Fuel Oil
Lanesboro	Lanesboro Public Utility Comm	Lanesboro, MN	140 MWh	Dec 1922	Dec 2025	Water : 88.6% Distillate Fuel Oil : 11.4%
Litchfield	Litchfield Public Utilities	Litchfield, MN	861 MWh	Aug 1963	Dec 2025	Distillate Fuel Oil : 54.6% Natural Gas : 45.4%
Marshall (MN)	City of Marshall - (MN)	Marshall, MN	93 MWh	Jun 1969	Dec 2025	Distillate Fuel Oil
Melrose	Melrose Public Utilities	Melrose, MN	71 MWh	Jun 1945	Dec 2025	Distillate Fuel Oil
Moose Lake	Moose Lake Water & Light Comm	Moose Lake, MN	128 MWh	Oct 1952	Dec 2025	Distillate Fuel Oil : 92.0% Natural Gas : 8.0%
Mora	City of Mora - (MN)	Mora, MN	1 GWh	Aug 1957	Dec 2025	Natural Gas : 71.2% Distillate Fuel Oil : 28.8%
Mountain Lake	City of Mountain Lake - (MN)	Mountain Lake, MN	3 GWh	Apr 1954	Dec 2025	Wind : 96.5% Distillate Fuel Oil : 1.9% Natural Gas : 1.6%
New Prague	New Prague Utilities Comm	New Prague, MN	1 GWh	Jul 1944	Dec 2025	Natural Gas : 76.4% Distillate Fuel Oil : 23.6%
New Ulm	New Ulm Public Utilities Comm	New Ulm, MN	2 GWh	Dec 1956	Dec 2025	Natural Gas : 59.1% Distillate Fuel Oil : 40.9%
North Branch (MN)	North Branch Water & Light Comm	North Branch, MN	249 MWh	Sep 2003	Dec 2025	Distillate Fuel Oil
Owatonna	City of Owatonna - (MN)	Owatonna, MN	1 GWh	Mar 1982	Dec 2025	Natural Gas
Preston (MN)	Preston Public Utilities Comm	Preston, MN	78 MWh	Dec 1948	Dec 2025	Distillate Fuel Oil : 71.9% Natural Gas : 28.1%
Princeton (MN)	Princeton Public Utils Comm	Princeton, MN	108 MWh	Aug 1953	Dec 2025	Distillate Fuel Oil
Rochester Hydro	Rochester Public Utilities	Mazeppa, MN	22 GWh	Aug 1984	Dec 2025	Water
Redwood Falls	Redwood Falls Public Util Comm	Redwood Falls, MN	3 GWh	Dec 1969	Dec 2025	Water : 84.0% Natural Gas : 12.5% Distillate Fuel Oil : 3.4%
Springfield (MN)	Springfield Public Utils Comm - (MN)	Springfield, MN	15 MWh	May 1994	Dec 2025	Distillate Fuel Oil
Spring Valley	Spring Valley Pub Utils Comm	Spring Valley, MN	227 MWh	Dec 1951	Dec 2025	Distillate Fuel Oil : 82.2% Natural Gas : 17.8%
Truman	City of Truman - (MN)	Truman, MN	16 MWh	Aug 1938	Dec 2025	Distillate Fuel Oil
Wells IC	City of Wells - (MN)	Wells, MN	437 MWh	Oct 1950	Dec 2025	Natural Gas : 67.1% Distillate Fuel Oil : 32.9%
Westbrook	City of Westbrook - (MN)	Westbrook, MN	10 MWh	Sep 2003	Dec 2025	Distillate Fuel Oil
Windom	City of Windom (MN)	Windom, MN	32 MWh	May 1980	Dec 2025	Distillate Fuel Oil

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#61	Alcoa Power Generating, Inc. - Yadkin Division	442.5 GWh	4
#26	Associated Electric Cooperative, Inc.	23.4 TWh	47
#13	Duke Energy Carolinas	112.6 TWh	577
#50	Duke Energy Progress West	4.5 TWh	15
#23	Louisville Gas and Electric Company and Kentucky Utilities Company	33.9 TWh	25
#1	PJM Interconnection, LLC	882.8 TWh	2,652
#6	Southern Company Services, Inc. - Trans	253.5 TWh	422
#5	Southwest Power Pool	306.8 TWh	856
#53	Southwestern Power Administration	4.1 TWh	34
#9	Tennessee Valley Authority	163.4 TWh	207

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#1	PJM Interconnection, LLC	882.8 TWh	2,652
#2	Midcontinent Independent System Operator, Inc.	669.4 TWh	3,038
#3	Electric Reliability Council of Texas, Inc.	494.1 TWh	1,471
#5	Southwest Power Pool	306.8 TWh	856
#6	Southern Company Services, Inc. - Trans	253.5 TWh	422
#7	California Independent System Operator	169.4 TWh	2,135
#9	Tennessee Valley Authority	163.4 TWh	207
#10	Florida Power & Light Co.	152.2 TWh	187
#12	New York Independent System Operator	134.3 TWh	1,299
#13	Duke Energy Carolinas	112.6 TWh	577