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	Oct 2026
Annual Generation	677.7 TWh
Power Plants	3,095
Utilities	1,372
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 \| 37.1% Coal \| 26.2% Wind \| 15% Nuclear \| 13.8% Solar \| 6.1% Water \| 1.4% 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
Castle Rock	Wisconsin River Power Company	Adams, WI	83 GWh	Jul 1950	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%
Holcombe	Northern States Power Co - Minnesota	Holcombe, WI	81 GWh	Dec 1949	Dec 2025	Water
PCA, Filer City Mill	PCA, Filer City Mill	Filer City, MI	94 GWh	Dec 1949	Jul 2026	Natural Gas
Way Dam	Wisconsin Electric Power Co	Crystal Falls, MI	6 GWh	Nov 1949	Dec 2025	Water
Big Quinnesec 92	Wisconsin Electric Power Co	Iron Mountain, MI	100 GWh	Oct 1949	Dec 2025	Water
Red Wing	Northern States Power Co - Minnesota	Red Wing, MN	127 GWh	Sep 1949	Jul 2026	Non-biogenic Municipal Solid Waste : 53.4% Biogenic Municipal Solid Waste : 43.7% Wood/Wood Waste Solids : 2.3% Natural Gas : 0.6%
Pulliam	Wisconsin Public Service Corp	Green Bay, WI	62 GWh	Aug 1949	Jul 2026	Natural Gas
Petenwell	Wisconsin River Power Company	Necedah, WI	97 GWh	Jul 1949	Dec 2025	Water
Peru (IN)	City of Peru - (IN)	Peru, IN	6 MWh	May 1949	Dec 2024	Distillate Fuel Oil
M L Hibbard	ALLETE, Inc.	Duluth, MN	81 GWh	May 1949	Jul 2026	Wood/Wood Waste Solids : 91.5% Subbituminous Coal : 6.1% Natural Gas : 2.3%
Stiles	Oconto Electric Cooperative	Oconto Falls, WI	5 GWh	Feb 1949	Dec 2025	Water
Preston (MN)	Preston Public Utilities Comm	Preston, MN	78 MWh	Dec 1948	Dec 2025	Distillate Fuel Oil : 71.9% Natural Gas : 28.1%
Bay Front	Northern States Power Co - Minnesota	Ashland, WI	177 GWh	Dec 1948	Dec 2025	Wood/Wood Waste Solids : 95.1% Tire-derived Fuels : 4.2% Natural Gas : 0.7%
Carmi	City of Carmi - (IL)	Carmi, IL	92 MWh	Nov 1948	Dec 2025	Distillate Fuel Oil
MSC Croswell	Michigan Sugar Company	Croswell, MI	36 MWh	Sep 1948	Jan 2025	Natural Gas
Lenox	City of Lenox - (IA)	Lenox, IA	55 MWh	Aug 1948	Dec 2025	Distillate Fuel Oil
Wilmarth	Northern States Power Co - Minnesota	Mankato, MN	104 GWh	Aug 1948	Jul 2026	Non-biogenic Municipal Solid Waste : 53.9% Biogenic Municipal Solid Waste : 44.1% Natural Gas : 2.1%
Freeburg	Village of Freeburg - (IL)	Freeburg, IL	145 MWh	Jul 1948	Dec 2025	Distillate Fuel Oil
Little Chute	City of Kaukauna (WI)	Combined Locks, WI	22 GWh	May 1948	Dec 2025	Water
Bancroft	Bancroft Municipal Utilities - (IA)	Bancroft, IA	22 MWh	Dec 1947	Dec 2025	Distillate Fuel Oil
Wyandotte	Wyandotte Municipal Serv Comm - (MI)	Wyandotte, MI	116 MWh	Dec 1947	Jul 2026	Distillate Fuel Oil
Alexandria	City of Alexandria - (MN)	Alexandria, MN	51 MWh	Dec 1947	Dec 2025	Distillate Fuel Oil
Sabine River Operations	The Dow Chemical Company	Orange, TX	2 TWh	Dec 1947	Jul 2026	Natural Gas : 99.7%
Whiting Refinery	BP PLC	Whiting, IN	328 GWh	Dec 1947	Dec 2025	Other Gas : 87.1% Natural Gas : 12.9%
Biron Mill	ND Paper, Inc.	Wisconsin Rapids, WI	114 GWh	Aug 1947	Dec 2025	Natural Gas
PPG Riverside	Westlake 2 US LLC	Lake Charles, LA	127 GWh	Aug 1947	Jul 2026	Purchased Steam
Bellevue	City of Bellevue - (IA)	Bellevue, IA	10 MWh	Jun 1947	Dec 2025	Distillate Fuel Oil
Hillsdale	Hillsdale Board of Public Wks	Hillsdale, MI	711 MWh	Feb 1947	Dec 2025	Natural Gas : 81.9% Distillate Fuel Oil : 18.1%
Delano	Delano Municipal Utilities (MN)	Delano, MN	53 MWh	Sep 1946	Dec 2025	Distillate Fuel Oil
Sullivan (IL)	City of Sullivan - (IL)	Sullivan, IL	574 MWh	May 1946	Jul 2026	Distillate Fuel Oil
Waterloo	City of Waterloo - (IL)	Waterloo, IL	751 MWh	May 1946	Dec 2025	Natural Gas : 73.6% Distillate Fuel Oil : 26.4%
Forest City Light Plant	City of Forest City- (IA)	Forest City, IA	392 MWh	Dec 1945	Dec 2025	Distillate Fuel Oil
Washington Island	Washington Island El Coop, Inc	Washington Island, WI	5 MWh	Nov 1945	Dec 2025	Distillate Fuel Oil
Melrose	Melrose Public Utilities	Melrose, MN	71 MWh	Jun 1945	Dec 2025	Distillate Fuel Oil
New Prague	New Prague Utilities Comm	New Prague, MN	1 GWh	Jul 1944	Dec 2025	Natural Gas : 76.4% Distillate Fuel Oil : 23.6%
Peavy Falls	Wisconsin Electric Power Co	Crystal Falls, MI	48 GWh	Dec 1942	Dec 2025	Water
Rapids Energy Center	ALLETE, Inc.	Grand Rapids, MN	40 GWh	Dec 1942	Dec 2025	Natural Gas : 81.7% Water : 18.3%
Clam River Dam	Zero6 Energy Hydro	Danbury, WI	5 GWh	Mar 1942	Dec 2025	Water
Moline	MidAmerican Energy Co	Moline, IL	21 GWh	Dec 1941	Dec 2025	Water : 97.0% Natural Gas : 3.0%
Du Bay	Consolidated Water Power Co	Eau Pleine, WI	36 GWh	Dec 1941	Dec 2025	Water
CITGO Refinery Powerhouse	CITGO Petroleum Corp	Sulphur, LA	224 GWh	Dec 1941	Dec 2025	Other Gas
McGregor	City of McGregor- (IA)	McGregor, IA	11 MWh	Nov 1941	Dec 2025	Distillate Fuel Oil
Kahoka	City of Kahoka - (MO)	Kahoka, MO	5 MWh	Dec 1940	Dec 2024	Distillate Fuel Oil
Kaukauna City Hydro	City of Kaukauna (WI)	Kaukauna, WI	31 GWh	Nov 1940	Dec 2025	Water
University of Illinois Abbott Power Plt	University of Illinois	Champaign, IL	213 GWh	Oct 1940	Dec 2025	Natural Gas : 97.0% Bituminous Coal : 3.0%
Montezuma	City of Montezuma - (IA)	Montezuma, IA	115 MWh	Jul 1940	Dec 2025	Distillate Fuel Oil : 67.9% Natural Gas : 32.1%
Bushnell	City of Bushnell - (IL)	Bushnell, IL	78 MWh	May 1940	Dec 2025	Distillate Fuel Oil
Lamoni Municipal Utilities	City of Lamoni - (IA)	Lamoni, IA	45 MWh	Feb 1940	Dec 2025	Distillate Fuel Oil
Ladysmith Dam	Northern States Power Co - Minnesota	Ladysmith, WI	10 GWh	Dec 1939	Dec 2025	Water
French Island	Northern States Power Co - Minnesota	La Cross, WI	68 GWh	Dec 1939	Jul 2026	Wood/Wood Waste Solids : 41.6% Non-biogenic Municipal Solid Waste : 25.4% Biogenic Municipal Solid Waste : 20.7% Distillate Fuel Oil : 12.0%
Anita	City of Anita - (IA)	Anita, IA	77 MWh	Sep 1939	Dec 2025	Distillate Fuel Oil
Indiana Harbor West	Cleveland Cliffs	East Chicago, IN	208 GWh	Sep 1939	Dec 2025	Natural Gas
Cumberland (WI)	City of Cumberland - (WI)	Cumberland, WI	269 MWh	Jul 1939	Dec 2025	Distillate Fuel Oil : 62.7% Natural Gas : 37.3%
Anheuser-Busch St Louis	Anheuser-Busch Inc	St. Louis, MO	38 GWh	Dec 1938	Jul 2026	Natural Gas : 93.0% Other Biomass Gas : 7.0%
Grandfather Falls	Wisconsin Public Service Corp	Irma, WI	79 GWh	Nov 1938	Dec 2025	Water
Truman	City of Truman - (MN)	Truman, MN	16 MWh	Aug 1938	Dec 2025	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%
Tomahawk	Wisconsin Public Service Corp	Tomahawk, WI	11 GWh	Dec 1937	Dec 2025	Water
Blooming Prairie	City of Blooming Prairie - (MN)	Blooming Prairie, MN	246 MWh	Apr 1937	Dec 2025	Distillate Fuel Oil
Jackson (MO)	City of Jackson - (MO)	Jackson, MO	202 MWh	Dec 1935	Dec 2025	Distillate Fuel Oil : 67.1% Natural Gas : 32.9%
Allegan Dam	Consumers Energy Co - (MI)	Allegan, MI	12 GWh	Dec 1934	Dec 2025	Water
Granite Falls	City of Granite Falls - (MN)	Granite Falls, MN	2 GWh	Jul 1932	Dec 2025	Water
Cashton	Village of Cashton - (WI)	Cashton, WI	10 MWh	Jul 1932	Dec 2025	Distillate Fuel Oil : 98.3% Natural Gas : 1.7%
Saint Marys Falls	USACE-Detroit District	Sault Ste. Marie, MI	156 GWh	Jun 1932	Dec 2025	Water
Carpenter	Entergy Arkansas LLC	Hot Springs, AR	147 GWh	Dec 1931	Dec 2025	Water
Prickett	Upper Peninsula Power Company	Pelkie, MI	6 GWh	Oct 1931	Dec 2025	Water
Osage Dam	Union Electric Co - (MO)	Eldon, MO	499 GWh	Sep 1931	Dec 2025	Water
Ottumwa City of	City of Ottumwa - (IA)	Ottumwa, IA	3 GWh	Jul 1931	Dec 2025	Water
Hardy	Consumers Energy Co - (MI)	Newaygo, MI	65 GWh	May 1931	Dec 2025	Water
Victoria Dam	Upper Peninsula Power Company	Rockland, MI	54 GWh	Dec 1930	Dec 2025	Water
Louisiana Sugar Refining	Louisiana Sugar Refining LLC	Gramercy, LA	9 GWh	Aug 1930	Dec 2025	Natural Gas
Arcadia Electric	City of Arcadia - (WI)	Arcadia, WI	253 MWh	Dec 1929	Dec 2025	Distillate Fuel Oil : 70.5% Natural Gas : 29.5%
Flambeau Crowley Rapids Project	Zero6 Energy Hydro	Park Falls, WI	4 GWh	Dec 1929	Dec 2025	Water
Rockton	Eagle Creek Renewable Energy, LLC	Rockton, IL	6 GWh	Dec 1928	Dec 2025	Water
Argyle	City of Argyle - (WI)	Argyle, WI	193 MWh	Dec 1928	Dec 2025	Water : 92.7% Distillate Fuel Oil : 7.3%
Sappi Cloquet Mill	Sappi Cloquet LLC	Cloquet, MN	460 GWh	Dec 1928	Jul 2026	Black Liquor : 62.4% Wood/Wood Waste Solids : 17.5% Natural Gas : 16.2% Water : 3.0% Distillate Fuel Oil : 0.5%
Marshall (MI)	City of Marshall - (MI)	Marshall, MI	638 MWh	May 1928	Dec 2025	Water
Chippewa Falls	Northern States Power Co - Minnesota	Chippewa Falls, WI	56 GWh	Dec 1927	Dec 2025	Water
White Rapids	Wisconsin Electric Power Co	Stephenson, MI	33 GWh	Sep 1927	Dec 2025	Water
Thief River Falls	City of Thief River Falls - (MN)	Thief River Falls, MN	3 GWh	Jul 1927	Dec 2025	Water : 99.7%
Chalk Hill	Wisconsin Electric Power Co	Stephenson, MI	34 GWh	Apr 1927	Dec 2025	Water
Thornapple	Northern States Power Co - Minnesota	Bruce, WI	7 GWh	Dec 1926	Dec 2025	Water
Trego	Northern States Power Co - Minnesota	Hayward, WI	5 GWh	Dec 1926	Dec 2025	Water
Boise Cascade International Falls	Boise White Paper LLC	International Falls, MN	338 GWh	Dec 1926	Jul 2026	Black Liquor : 63.6% Natural Gas : 22.5% Wood/Wood Waste Solids : 12.6% Sludge Waste : 1.3%
Kilbourn	Wisconsin Power & Light Co	Wisconsin Dells, WI	49 GWh	Jun 1926	Dec 2025	Water
Rapide Croche	City of Kaukauna (WI)	Kaukana, WI	17 GWh	Dec 1925	Dec 2025	Water
Kimberly Mill	City of Kaukauna (WI)	Appleton, WI	13 GWh	Dec 1925	Dec 2025	Water
Oakdale	Northern Indiana Pub Serv Co	Monticello, IN	15 GWh	Oct 1925	Feb 2025	Water
Hodenpyl	Consumers Energy Co - (MI)	Mesick, MI	22 GWh	Jun 1925	Dec 2025	Water
Blanchard	ALLETE, Inc.	Royalton, MN	72 GWh	Jan 1925	Dec 2025	Water
Remmel	Entergy Arkansas LLC	Malvern, AR	46 GWh	Dec 1924	Dec 2025	Water
CC Perry K	Citizens Thermal Energy	Indianapolis, IN	15 GWh	Dec 1924	Jul 2026	Natural Gas
Kleber	Tower Kleber Ltd Partnership	Onaway, MI	5 GWh	Dec 1924	Dec 2024	Water
Alexander	Wisconsin Public Service Corp	Merrill, WI	14 GWh	Dec 1924	Dec 2025	Water
Sandstone Rapids	Wisconsin Public Service Corp	Town of Stephenson, WI	10 GWh	Dec 1924	Dec 2025	Water
Dayton Hydro	Eagle Creek Renewable Energy, LLC	Ottawa, IL	10 GWh	Dec 1924	Dec 2025	Water
Caldron Falls	Wisconsin Public Service Corp	Town of Stephenson, WI	11 GWh	Oct 1924	Dec 2025	Water
Twin Cities Hydro LLC	Twin Cities Hydro LLC	St. Paul, MN	97 GWh	Sep 1924	Dec 2025	Water
Kingsford	Wisconsin Electric Power Co	Kingsford, MI	26 GWh	Apr 1924	Dec 2025	Water

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#61	Alcoa Power Generating, Inc. - Yadkin Division	433.0 GWh	4
#26	Associated Electric Cooperative, Inc.	22.9 TWh	47
#13	Duke Energy Carolinas	113.4 TWh	578
#50	Duke Energy Progress West	4.6 TWh	15
#23	Louisville Gas and Electric Company and Kentucky Utilities Company	34.2 TWh	25
#1	PJM Interconnection, LLC	890.9 TWh	2,806
#6	Southern Company Services, Inc. - Trans	259.3 TWh	423
#5	Southwest Power Pool	314.5 TWh	876
#53	Southwestern Power Administration	3.5 TWh	37
#9	Tennessee Valley Authority	166.2 TWh	209

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#1	PJM Interconnection, LLC	890.9 TWh	2,806
#2	Midcontinent Independent System Operator, Inc.	677.7 TWh	3,095
#3	Electric Reliability Council of Texas, Inc.	506.3 TWh	1,487
#5	Southwest Power Pool	314.5 TWh	876
#6	Southern Company Services, Inc. - Trans	259.3 TWh	423
#7	California Independent System Operator	168.7 TWh	2,170
#9	Tennessee Valley Authority	166.2 TWh	209
#10	Florida Power & Light Co.	153.0 TWh	188
#12	New York Independent System Operator	134.1 TWh	1,334
#13	Duke Energy Carolinas	113.4 TWh	578