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	Nov 2025
Annual Generation	655.1 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 \| 35.7% Coal \| 29% Wind \| 14.9% Nuclear \| 13.9% Solar \| 4.5% Water \| 1.5% Other Fuel \| 0.6%

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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
Marshall (MI)	City of Marshall - (MI)	Marshall, MI	704 MWh	May 1928	Dec 2024	Water
Norway (MI)	City of Norway	Norway, MI	27 GWh	May 1905	Dec 2024	Water
Frank Jenkins	City of Portland - (MI)	Portland, MI	59 MWh	Apr 1950	Dec 2024	Distillate Fuel Oil : 81.8% Natural Gas : 18.2%
St Louis	City of St Louis - (MI)	St. Louis, MI	29 MWh	Dec 1918	Dec 2024	Water : 75.9% Distillate Fuel Oil : 24.1%
Saint Marys Falls	USACE-Detroit District	Sault Ste. Marie, MI	155 GWh	Jun 1932	Dec 2024	Water
Dafter	Cloverland Electric Co-op	Dafter, MI	3 GWh	Oct 1955	Dec 2024	Distillate Fuel Oil
Kleber	Tower Kleber Ltd Partnership	Onaway, MI	5 GWh	Dec 1924	Dec 2024	Water
Tower	Wolverine Power Supply Coop	Tower, MI	62 MWh	Feb 1971	Dec 2024	Distillate Fuel Oil
Ubly	Thumb Electric Coop of Mich	Ubly, MI	12 MWh	May 1938	Dec 2024	Distillate Fuel Oil : 63.3% Natural Gas : 36.7%
George Johnson	Wolverine Power Supply Coop	Hersey, MI	34 GWh	Aug 1993	Dec 2024	Natural Gas
Claude Vandyke	Wolverine Power Supply Coop	Dorr, MI	5 GWh	Dec 1966	Dec 2024	Natural Gas
Vestaburg	Wolverine Power Supply Coop	Vestaburg, MI	2 GWh	Dec 1958	Dec 2024	Natural Gas
Syl Laskin	ALLETE, Inc.	Hoyt Lakes, MN	172 GWh	May 1953	Dec 2024	Natural Gas
Blanchard	ALLETE, Inc.	Royalton, MN	82 GWh	Jan 1925	Dec 2024	Water
Fond Du Lac	ALLETE, Inc.	Duluth, MN	54 GWh	Dec 1923	Dec 2024	Water
Knife Falls	ALLETE, Inc.	Cloquet, MN	10 GWh	Dec 1921	Dec 2024	Water
Little Falls (MN)	ALLETE, Inc.	Little Falls, MN	32 GWh	Dec 1905	Dec 2024	Water
Pillager	ALLETE, Inc.	Pillager, MN	7 GWh	Dec 1916	Dec 2024	Water
Scanlon	ALLETE, Inc.	Scanlon, MN	7 GWh	Dec 1922	Dec 2024	Water
Sylvan	ALLETE, Inc.	Pillager, MN	11 GWh	Dec 1912	Dec 2024	Water
Thomson	ALLETE, Inc.	Carlton, MN	290 GWh	Dec 1906	Dec 2024	Water
Winton	ALLETE, Inc.	Winton, MN	10 GWh	Jul 1923	Dec 2024	Water
Black Dog	Northern States Power Co - Minnesota	Burnsville, MN	2 TWh	Sep 1954	Dec 2024	Natural Gas
Hennepin Island	Northern States Power Co - Minnesota	Minneapolis, MN	47 GWh	Sep 1954	Dec 2024	Water
Inver Hills	Northern States Power Co - Minnesota	Inver Grove Heights, MN	64 GWh	Mar 1972	Dec 2024	Natural Gas : 99.7%
St James	City of St James - (MN)	St James, MN	36 MWh	Jun 2002	Dec 2024	Distillate Fuel Oil
Hoot Lake	Otter Tail Power Co	Fergus Falls, MN	3 GWh	Aug 1914	Dec 2024	Water
Alexandria	City of Alexandria - (MN)	Alexandria, MN	43 MWh	Dec 1947	Dec 2024	Distillate Fuel Oil
Benson City of	City of Benson - (MN)	Benson, MN	54 MWh	Apr 2002	Dec 2024	Distillate Fuel Oil
Blooming Prairie	City of Blooming Prairie - (MN)	Blooming Prairie, MN	234 MWh	Apr 1937	Dec 2024	Distillate Fuel Oil
Blue Earth	Blue Earth Light & Water	Blue Earth, MN	96 MWh	Oct 1960	Dec 2024	Distillate Fuel Oil
Delano	Delano Municipal Utilities	Delano, MN	52 MWh	Sep 1946	Dec 2024	Distillate Fuel Oil
Detroit Lakes	City of Detroit Lakes - (MN)	Detroit Lakes, MN	50 MWh	Jun 1968	Dec 2024	Distillate Fuel Oil
Fairfax	City of Fairfax - (MN)	Fairfax, MN	2 MWh	Jul 2001	Dec 2024	Distillate Fuel Oil
Fairmont (MN)	Southern Minnesota Mun P Agny	Fairmont, MN	6 GWh	Dec 1974	Dec 2024	Natural Gas : 97.6% Distillate Fuel Oil : 2.4%
Glencoe	Glencoe Light & Power Comm	Glencoe, MN	182 MWh	May 1957	Dec 2024	Distillate Fuel Oil : 99.8%
Grand Marais	City of Grand Marais - (MN)	Grand Marais, MN	204 MWh	Jan 2004	Dec 2024	Distillate Fuel Oil
Granite Falls	City of Granite Falls - (MN)	Granite Falls, MN	3 GWh	Jul 1932	Dec 2024	Water
Hibbing	Hibbing Public Utilities Comm	Hibbing, MN	36 GWh	Mar 1965	Dec 2024	Natural Gas : 60.1% Wood/Wood Waste Solids : 38.2% Bituminous Coal : 1.7%
Hutchinson Plant #1	Hutchinson Utilities Comm	Hutchinson, MN	36 GWh	Dec 1957	Dec 2024	Natural Gas
Janesville	City of Janesville - (MN)	Janesville, MN	20 MWh	Apr 1955	Dec 2024	Distillate Fuel Oil : 97.0% Natural Gas : 3.0%
Kenyon Municipal	Kenyon Municipal Utilities	Kenyon, MN	14 MWh	Jul 1997	Dec 2024	Distillate Fuel Oil
Lake Crystal	City of Lake Crystal - (MN)	Lake Crystal, MN	20 MWh	Apr 1952	Dec 2024	Distillate Fuel Oil
Lanesboro	Lanesboro Public Utility Comm	Lanesboro, MN	184 MWh	Dec 1922	Dec 2024	Water : 81.0% Distillate Fuel Oil : 19.0%
Litchfield	Litchfield Public Utilities	Litchfield, MN	143 MWh	Aug 1963	Dec 2024	Natural Gas : 62.5% Distillate Fuel Oil : 37.5%
Marshall (MN)	City of Marshall - (MN)	Marshall, MN	60 MWh	Jun 1969	Dec 2024	Distillate Fuel Oil
Melrose	Melrose Public Utilities	Melrose, MN	49 MWh	Jun 1945	Dec 2024	Distillate Fuel Oil
Moose Lake	Moose Lake Water & Light Comm	Moose Lake, MN	63 MWh	Oct 1952	Dec 2024	Distillate Fuel Oil : 83.7% Natural Gas : 16.3%
Mountain Lake	City of Mountain Lake - (MN)	Mountain Lake, MN	2 GWh	Apr 1954	Dec 2024	Wind : 97.7% Natural Gas : 1.8%
New Ulm	New Ulm Public Utilities Comm	New Ulm, MN	2 GWh	Dec 1956	Dec 2024	Natural Gas : 95.4% Distillate Fuel Oil : 4.6%
North Branch (MN)	North Branch Water & Light Comm	North Branch, MN	300 MWh	Sep 2003	Dec 2024	Distillate Fuel Oil
Preston (MN)	Preston Public Utilities Comm	Preston, MN	163 MWh	Dec 1948	Dec 2024	Distillate Fuel Oil : 62.3% Natural Gas : 37.7%
Princeton (MN)	Princeton Public Utils Comm	Princeton, MN	134 MWh	Aug 1953	Dec 2024	Distillate Fuel Oil
Rochester Hydro	Rochester Public Utilities	Mazeppa, MN	10 GWh	Aug 1984	Dec 2024	Water
Redwood Falls	Redwood Falls Public Util Comm	Redwood Falls, MN	3 GWh	Dec 1969	Dec 2024	Water : 82.6% Natural Gas : 12.7% Distillate Fuel Oil : 4.7%
Sleepy Eye	Sleepy Eye Public Utility Comm	Sleepy Eye, MN	131 MWh	Jun 1995	Dec 2024	Distillate Fuel Oil
Springfield (MN)	Springfield Public Utils Comm - (MN)	Springfield, MN	1 MWh	May 1994	Dec 2024	Distillate Fuel Oil
Spring Valley	Spring Valley Pub Utils Comm	Spring Valley, MN	157 MWh	Dec 1951	Dec 2024	Distillate Fuel Oil : 78.5% Natural Gas : 21.5%
Thief River Falls	City of Thief River Falls	Thief River Falls, MN	3 GWh	Jul 1927	Dec 2024	Water : 99.6%
Truman	City of Truman	Truman, MN	39 MWh	Aug 1938	Dec 2024	Distillate Fuel Oil
Wells IC	City of Wells - (MN)	Wells, MN	180 MWh	Oct 1950	Dec 2024	Natural Gas : 64.3% Distillate Fuel Oil : 35.7%
Westbrook	City of Westbrook	Westbrook, MN	9 MWh	Sep 2003	Dec 2024	Distillate Fuel Oil
Windom	City of Windom	Windom, MN	23 MWh	May 1980	Dec 2024	Distillate Fuel Oil
Worthington	City of Worthington - (MN)	Worthington, MN	9 GWh	Jan 2002	Dec 2024	Wind : 98.9% Distillate Fuel Oil : 1.1%
Cambridge CT Hybrid	Great River Energy	Cambridge, MN	36 GWh	Apr 1978	Dec 2024	Natural Gas : 99.0% Distillate Fuel Oil : 1.0%
Maple Lake	Great River Energy	Maple Lake, MN	176 MWh	Apr 1978	Dec 2024	Distillate Fuel Oil
Benndale	Cooperative Energy	Benndale, MS	52 GWh	Sep 1969	Dec 2024	Natural Gas
Fairgrounds	Union Electric Co - (MO)	Jefferson City, MO	136 MWh	Jul 1974	Dec 2024	Distillate Fuel Oil
Osage Dam	Union Electric Co - (MO)	Eldon, MO	497 GWh	Sep 1931	Dec 2024	Water
Columbia (MO)	City of Columbia - (MO)	Columbia, MO	22 GWh	Dec 1956	Dec 2024	Landfill Gas : 63.9% Natural Gas : 36.1%
Jackson (MO)	City of Jackson - (MO)	Jackson, MO	146 MWh	Dec 1935	Dec 2024	Distillate Fuel Oil : 58.6% Natural Gas : 41.4%
Kahoka	City of Kahoka	Kahoka, MO	5 MWh	Dec 1940	Dec 2024	Distillate Fuel Oil
Glendive GT	Montana-Dakota Utilities Co	Glendive, MT	3 GWh	May 1979	Dec 2024	Natural Gas : 89.5% Distillate Fuel Oil : 10.5%
Miles City GT	Montana-Dakota Utilities Co	Miles City, MT	331 MWh	Apr 1972	Dec 2024	Natural Gas : 97.0% Distillate Fuel Oil : 3.0%
Jamestown	Otter Tail Power Co	Jamestown, ND	194 MWh	Apr 1976	Dec 2024	Distillate Fuel Oil
Lake Preston	Otter Tail Power Co	Lake Preston, SD	86 MWh	May 1978	Dec 2024	Distillate Fuel Oil
Biron	Consolidated Water Power Co	Biron, WI	31 GWh	Dec 1895	Dec 2024	Water
Du Bay	Consolidated Water Power Co	Eau Pleine, WI	43 GWh	Dec 1941	Dec 2024	Water
Stevens Point	Consolidated Water Power Co	Stevens Point, WI	29 GWh	Dec 1917	Dec 2024	Water
Wisconsin Rapids	Consolidated Water Power Co	Wisconsin Rapids, WI	50 GWh	Dec 1902	Dec 2024	Water
Whiting	Consolidated Water Power Co	Whiting, WI	25 GWh	Dec 1890	Dec 2024	Water
Bay Front	Northern States Power Co - Minnesota	Ashland, WI	160 GWh	Dec 1948	Dec 2024	Wood/Wood Waste Solids : 95.3% Tire-derived Fuels : 4.1% Natural Gas : 0.6%
Big Falls	Northern States Power Co - Minnesota	Glen Fora, WI	36 GWh	Dec 1921	Dec 2024	Water
Ladysmith Dam	Northern States Power Co - Minnesota	Ladysmith, WI	11 GWh	Dec 1939	Dec 2024	Water
Thornapple	Northern States Power Co - Minnesota	Bruce, WI	8 GWh	Dec 1926	Dec 2024	Water
White River (WI)	Northern States Power Co - Minnesota	Ashland, WI	4 GWh	Dec 1906	Dec 2024	Water
Fitchburg	Madison Gas & Electric Co	Madison, WI	14 MWh	Apr 1973	Dec 2024	Natural Gas
Blount Street	Madison Gas & Electric Co	Madison, WI	49 GWh	May 1957	Dec 2024	Natural Gas
Sycamore (WI)	Madison Gas & Electric Co	Madison, WI	19 MWh	Nov 1967	Dec 2024	Natural Gas
Arpin Dam	Renewable World Energies LLC	Radisson, WI	6 GWh	Aug 1971	Dec 2024	Water
Cedar Falls (WI)	Northern States Power Co - Minnesota	Menomonie, WI	34 GWh	Dec 1909	Dec 2024	Water
Chippewa Falls	Northern States Power Co - Minnesota	Chippewa Falls, WI	63 GWh	Dec 1927	Dec 2024	Water
Dells	Northern States Power Co - Minnesota	Eau Claire, WI	42 GWh	Dec 1922	Dec 2024	Water
Holcombe	Northern States Power Co - Minnesota	Holcombe, WI	93 GWh	Dec 1949	Dec 2024	Water
Jim Falls	Northern States Power Co - Minnesota	Jim Falls, WI	122 GWh	Jun 1988	Dec 2024	Water
Menomonie	Northern States Power Co - Minnesota	Menomonie, WI	24 GWh	Dec 1957	Dec 2024	Water
St Croix Falls	Northern States Power Co - Minnesota	St Croix Falls, WI	105 GWh	Dec 1909	Dec 2024	Water
Trego	Northern States Power Co - Minnesota	Hayward, WI	7 GWh	Dec 1926	Dec 2024	Water
Wheaton	Northern States Power Co - Minnesota	Eau Claire, WI	19 GWh	Dec 1972	Dec 2024	Natural Gas : 96.6% Distillate Fuel Oil : 3.4%
Wissota	Northern States Power Co - Minnesota	Chippewa Falls, WI	136 GWh	Dec 1916	Dec 2024	Water

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#61	Alcoa Power Generating, Inc. - Yadkin Division	696.7 GWh	4
#27	Associated Electric Cooperative, Inc.	23.6 TWh	47
#13	Duke Energy Carolinas	112.5 TWh	565
#52	Duke Energy Progress West	4.3 TWh	10
#24	Louisville Gas and Electric Company and Kentucky Utilities Company	34.4 TWh	25
#1	PJM Interconnection, LLC	870.7 TWh	2,465
#6	Southern Company Services, Inc. - Trans	250.9 TWh	417
#5	Southwest Power Pool	299.9 TWh	835
#49	Southwestern Power Administration	5.2 TWh	34
#9	Tennessee Valley Authority	161.6 TWh	204

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#1	PJM Interconnection, LLC	870.7 TWh	2,465
#2	Midcontinent Independent System Operator, Inc.	655.1 TWh	2,831
#4	Electric Reliability Council of Texas, Inc.	485.0 TWh	1,313
#5	Southwest Power Pool	299.9 TWh	835
#6	Southern Company Services, Inc. - Trans	250.9 TWh	417
#7	California Independent System Operator	188.0 TWh	2,075
#9	Tennessee Valley Authority	161.6 TWh	204
#10	Florida Power & Light Co.	148.9 TWh	187
#12	New York Independent System Operator	131.6 TWh	1,211
#13	Duke Energy Carolinas	112.5 TWh	565