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
Graettinger	City of Graettinger - (IA)	Graettinger, IA	49 MWh	Jul 1957	Dec 2025	Distillate Fuel Oil
Hobart Solar, LLC	AES Distributed Energy	Hobart, IN	49 MWh	Oct 2012	Dec 2025	Solar
Beaver Island	Great Lakes Energy Coop	Beaver Island, MI	50 MWh	Aug 2000	Dec 2025	Distillate Fuel Oil
Alexandria	City of Alexandria - (MN)	Alexandria, MN	51 MWh	Dec 1947	Dec 2025	Distillate Fuel Oil
John Deere Dubuque Works	John Deere Dubuque Works	Dubuque, IA	52 MWh	May 1994	Jul 2026	Distillate Fuel Oil
Delano	Delano Municipal Utilities (MN)	Delano, MN	53 MWh	Sep 1946	Dec 2025	Distillate Fuel Oil
City of Peru Rail Generating Station	City of Peru - (IL)	Peru, IL	53 MWh	Aug 2011	Dec 2025	Distillate Fuel Oil
Hopkinton	City of Hopkinton - (IA)	Hopkinton, IA	54 MWh	Aug 1973	Dec 2025	Distillate Fuel Oil
Novel Brock Solar LLC CSG	Novel Brock Solar HQ LLC	Clarkfield, MN	54 MWh	Nov 2025	Dec 2025	Solar
Lenox	City of Lenox - (IA)	Lenox, IA	55 MWh	Aug 1948	Dec 2025	Distillate Fuel Oil
Sumner	City of Sumner - (IA)	Sumner, IA	55 MWh	Jul 1956	Dec 2025	Distillate Fuel Oil
New Lisbon	City of New Lisbon (WI)	New Lisbon, WI	55 MWh	Dec 1965	Dec 2025	Distillate Fuel Oil
Southwestern Bell Telephone	AT&T	St. Louis, MO	58 MWh	Jan 1992	Jul 2026	Distillate Fuel Oil
Farmer City	City of Farmer City - (IL)	Farmer City, IL	59 MWh	Mar 1951	Dec 2025	Distillate Fuel Oil
Novel Stumpf 1 Solar CSG	Novel Stumpf 1 Solar LLC	Red Wing, MN	60 MWh	Nov 2025	Dec 2025	Solar
Noble Ridge LLC	RENEW Energy Inc	Wilmont, MN	61 MWh	Nov 2001	Dec 2024	Wind
Tower	Wolverine Power Supply Coop	Tower, MI	61 MWh	Feb 1971	Dec 2025	Distillate Fuel Oil
4710 Hosting	Epic Hosting, LLC	Rochester, MN	63 MWh	May 2012	Dec 2025	Distillate Fuel Oil
Pearl Station	Prairie Power, Inc	Pearl, IL	64 MWh	May 1973	Dec 2025	Distillate Fuel Oil
Traer Main	City of Traer - (IA)	Traer, IA	65 MWh	Dec 1962	Dec 2025	Distillate Fuel Oil : 98.5% Natural Gas : 1.5%
Viola	OneEnergy, Inc.	Webster, WI	65 MWh	Nov 2025	Dec 2025	Solar
Little Cedar	OneEnergy, Inc.	Little Cedar, IA	65 MWh	Nov 2025	Dec 2025	Solar
West Bend	City of West Bend - (IA)	West Bent, IA	68 MWh	Nov 1954	Dec 2025	Distillate Fuel Oil
Alliant SBD 9301 Prairie Farms	Industrial Energy Applications Inc	Dubuque, IA	69 MWh	Jun 1993	Dec 2025	Distillate Fuel Oil
IMEA Flora	Illinois Municipal Elec Agency (IL)	Flora, IL	71 MWh	Nov 2000	Dec 2025	Distillate Fuel Oil
South Plant (IA)	Waverly Municipal Elec Utility - (IA)	Waverly, IA	71 MWh	Apr 2000	Dec 2025	Distillate Fuel Oil
Melrose	Melrose Public Utilities	Melrose, MN	71 MWh	Jun 1945	Dec 2025	Distillate Fuel Oil
Ogden	City of Ogden - (IA)	Ogden, IA	73 MWh	Jun 1951	Dec 2025	Distillate Fuel Oil
Des Moines Wastewater Reclamation Fac	Des Moines Metro WRF	Des Moines, IA	74 MWh	Jun 1991	Dec 2025	Natural Gas
Altamont	City of Altamont - (IL)	Altamont, IL	75 MWh	Dec 2001	Dec 2025	Distillate Fuel Oil
Fennimore	City of Fennimore - (WI)	Fennimore, WI	75 MWh	Jan 1952	Dec 2025	Distillate Fuel Oil
St. Charles Power Plant	City of St Charles - (MN)	St. Charles, MN	75 MWh	Nov 2004	Dec 2025	Distillate Fuel Oil
Anita	City of Anita - (IA)	Anita, IA	77 MWh	Sep 1939	Dec 2025	Distillate Fuel Oil
Bushnell	City of Bushnell - (IL)	Bushnell, IL	78 MWh	May 1940	Dec 2025	Distillate Fuel Oil
Preston (MN)	Preston Public Utilities Comm	Preston, MN	78 MWh	Dec 1948	Dec 2025	Distillate Fuel Oil : 71.9% Natural Gas : 28.1%
Casey City of	City of Casey - (IL)	Casey, IL	80 MWh	Apr 2002	Dec 2025	Distillate Fuel Oil
Blue Earth	Blue Earth Light & Water	Blue Earth, MN	81 MWh	Oct 1960	Dec 2025	Distillate Fuel Oil
Luck	OneEnergy, Inc.	Luck, WI	85 MWh	Nov 2025	Dec 2025	Solar
Spencer Gas Turbine	City of Spencer - (IA)	Spencer, IA	86 MWh	Dec 1969	Dec 2025	Kerosene
Nine Springs	Madison Gas & Electric Co	Madison, WI	89 MWh	Nov 1964	Dec 2025	Natural Gas
Carmi	City of Carmi - (IL)	Carmi, IL	92 MWh	Nov 1948	Dec 2025	Distillate Fuel Oil
St James	City of St James - (MN)	St James, MN	93 MWh	Jun 2002	Dec 2025	Distillate Fuel Oil
Marshall (MN)	City of Marshall - (MN)	Marshall, MN	93 MWh	Jun 1969	Dec 2025	Distillate Fuel Oil
Medanos Solar LLC	Dimension Energy LLC	Homer, IL	96 MWh	Nov 2025	Dec 2025	Solar
Lake Mills	City of Lake Mills - (IA)	Lake Mills, IA	99 MWh	Dec 1955	Dec 2025	Distillate Fuel Oil
Chatham	City of Lowell - (MI)	Lowell, MI	103 MWh	Aug 2013	Dec 2025	Natural Gas
SV CSG Bishop 1 LLC	SunVest Solar LLC	Herrin, IL	106 MWh	Nov 2025	Dec 2025	Solar
Rocky Mountain Elk Solar Community Solar	Rocky Mountain Elk Solar, LLC	Sheffield, IL	108 MWh	Nov 2025	Dec 2025	Solar
Princeton (MN)	Princeton Public Utils Comm	Princeton, MN	108 MWh	Aug 1953	Dec 2025	Distillate Fuel Oil
Grundy Center City Light Plant	Grundy Center Mun Light & Power	Grundy Center, IA	109 MWh	Oct 1963	Dec 2025	Distillate Fuel Oil
Benson City of	City of Benson - (MN)	Benson, MN	114 MWh	Apr 2002	Dec 2025	Distillate Fuel Oil
Atlantic	Atlantic Municipal Utilities (IA)	Atlantic, IA	115 MWh	Aug 1966	Dec 2025	Natural Gas
Montezuma	City of Montezuma - (IA)	Montezuma, IA	115 MWh	Jul 1940	Dec 2025	Distillate Fuel Oil : 67.9% Natural Gas : 32.1%
Wyandotte	Wyandotte Municipal Serv Comm - (MI)	Wyandotte, MI	116 MWh	Dec 1947	Jul 2026	Distillate Fuel Oil
St. Olaf StandBy Generators	St. Olaf College	Northfield, MN	116 MWh	May 1999	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%
Putnam (MI)	DTE Electric Company	Mayville, MI	129 MWh	May 1971	Dec 2025	Distillate Fuel Oil
Lake Preston	Otter Tail Power Co	Lake Preston, SD	135 MWh	May 1978	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%
Hurricane Creek Lift Station	Johnson County Rural E M C	Greenwood, IN	143 MWh	Aug 2004	Dec 2024	Distillate Fuel Oil
CG Windfarm LLC	CG Windfarm LLC	Woodstock, MN	144 MWh	Nov 2003	Dec 2024	Wind
Freeburg	Village of Freeburg - (IL)	Freeburg, IL	145 MWh	Jul 1948	Dec 2025	Distillate Fuel Oil
Colfax	DTE Electric Company	Fowlerville, MI	146 MWh	Oct 1969	Dec 2025	Distillate Fuel Oil
Glencoe	Glencoe Light & Power Comm	Glencoe, MN	146 MWh	May 1957	Dec 2025	Distillate Fuel Oil : 99.7%
Beloit Memorial Hospital Power Plant	Beloit Memorial Hospital	Beloit, WI	147 MWh	May 2000	Dec 2025	Natural Gas : 99.1% Distillate Fuel Oil : 0.9%
Geranium Solar	Generate Capital	Spring Valley, IL	148 MWh	Nov 2025	Dec 2025	Solar
State Center	City of State Center - (IA)	State Center, IA	153 MWh	Jul 1972	Dec 2025	Distillate Fuel Oil : 72.4% Natural Gas : 27.6%
La Porte	La Porte City Utilities	La Porte City, IA	162 MWh	Nov 2000	Dec 2025	Distillate Fuel Oil
Grand Marais	City of Grand Marais - (MN)	Grand Marais, MN	164 MWh	Jan 2004	Dec 2025	Distillate Fuel Oil
L L Wilkins	Clarksdale Public Utilities	Clarksdale, MS	166 MWh	Sep 1961	Aug 2025	Natural Gas : 71.4% Distillate Fuel Oil : 28.6%
Marshall (IL)	City of Marshall - (IL)	Marshall, IL	167 MWh	Mar 2002	Dec 2025	Distillate Fuel Oil
Drummer Creek I Solar LLC	Dimension Energy LLC	Gibson City, IL	170 MWh	Nov 2025	Dec 2025	Solar
Sibley One	City of Sibley - (IA)	Sibley, IA	174 MWh	Aug 1971	Dec 2025	Distillate Fuel Oil : 65.0% Natural Gas : 35.0%
Farmers Electric Cooperative - Kalona	Farmers Electric Coop - (IA)	Kalona, IA	174 MWh	Feb 2001	Dec 2025	Distillate Fuel Oil
Reynolds	City of Springfield - (IL)	Springfield, IL	179 MWh	Oct 1970	Dec 2025	Distillate Fuel Oil
Alliant SBD 9106 Rockwell CR	Industrial Energy Applications Inc	Cedar Rapids, IA	185 MWh	May 1992	Dec 2025	Distillate Fuel Oil
SV CSG Gander Farms 1 A	SV CSG Gander Farms 1 A, LLC	Carterville, IL	188 MWh	Oct 2025	Dec 2025	Solar
Argyle	City of Argyle - (WI)	Argyle, WI	193 MWh	Dec 1928	Dec 2025	Water : 92.7% Distillate Fuel Oil : 7.3%
Frank Jenkins	City of Portland - (MI)	Portland, MI	195 MWh	Apr 1950	Dec 2025	Distillate Fuel Oil : 81.7% Natural Gas : 18.3%
Factory	City of Springfield - (IL)	Springfield, IL	198 MWh	Jul 1973	Jun 2025	Distillate Fuel Oil
Greenfield	OneEnergy, Inc.	Coon Valley, WI	200 MWh	Oct 2025	Dec 2025	Solar
Jackson (MO)	City of Jackson - (MO)	Jackson, MO	202 MWh	Dec 1935	Dec 2025	Distillate Fuel Oil : 67.1% Natural Gas : 32.9%
Municipal Power Plant	City of Zeeland - (MI)	Zeeland, MI	205 MWh	May 2002	Dec 2025	Natural Gas
Carlyle	City of Carlyle - (IL)	Carlyle, IL	208 MWh	Jul 1964	Dec 2025	Distillate Fuel Oil
Waverly Municipal Electric North Plant	Waverly Municipal Elec Utility - (IA)	Waverly, IA	212 MWh	Jul 1958	Dec 2025	Distillate Fuel Oil : 67.7% Natural Gas : 32.3%
Trenton West Phase 2	Generate Capital	Trenton, IL	213 MWh	Oct 2025	Dec 2025	Solar
Kindred School	Kindred Public School	Kindred, ND	216 MWh	Sep 2001	Apr 2026	Distillate Fuel Oil
Peoria Solar 3	Pivot Energy	Dunlap, IL	219 MWh	Nov 2025	Dec 2025	Solar
Highland	City of Highland - (IL)	Highland, IL	222 MWh	Feb 1967	Dec 2025	Distillate Fuel Oil
Avenue A Generator Sets	City of Rock Falls - (IL)	Rock Falls, IL	224 MWh	Aug 2000	Dec 2025	Distillate Fuel Oil
Knoxville Industrial	MidAmerican Energy Co	Knoxville, IA	225 MWh	Mar 2000	Dec 2025	Distillate Fuel Oil
SAE Ottawa IL	SolAmerica Energy, LLC	Ottawa, IL	225 MWh	Aug 2025	Dec 2025	Solar
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%
West Liberty	City of West Liberty - (IA)	West Liberty, IA	234 MWh	Sep 1974	Dec 2025	Distillate Fuel Oil
MN CSG 2019-113	MN CSG 2019-113 LLC	Montevideo, MN	237 MWh	Sep 2025	Dec 2025	Solar
Placid 12	DTE Electric Company	Clarkston, MI	243 MWh	Oct 1970	Dec 2025	Distillate Fuel Oil
Trenton East Phase 2	Generate Capital	Trenton, IL	245 MWh	Oct 2025	Dec 2025	Solar
Blooming Prairie	City of Blooming Prairie - (MN)	Blooming Prairie, MN	246 MWh	Apr 1937	Dec 2025	Distillate Fuel Oil
North Branch (MN)	North Branch Water & Light Comm	North Branch, MN	249 MWh	Sep 2003	Dec 2025	Distillate Fuel Oil
Arcadia Electric	City of Arcadia - (WI)	Arcadia, WI	253 MWh	Dec 1929	Dec 2025	Distillate Fuel Oil : 70.5% Natural Gas : 29.5%

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