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	Oct 2025
Annual Generation	651.4 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 \| 36.1% Coal \| 28.7% Wind \| 15% Nuclear \| 14% Solar \| 4.3% Water \| 1.5% Other Fuel \| 0.5%

Map of Midcontinent Independent System Operator, Inc.

Register Now for Comprehensive Access

Subscribe now to access all power plant data, utility information, FERC EQR data, and more for Midcontinent Independent System Operator, Inc..

Create Your Account Today

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
Kilbourn	Wisconsin Power & Light Co	Wisconsin Dells, WI	58 GWh	Jun 1926	Dec 2024	Water
Prairie Du Sac	Wisconsin Power & Light Co	Prairie du Sac, WI	144 GWh	Sep 1915	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
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
Potato Rapids	Wisconsin Public Service Corp	Town of Porterfield, WI	4 GWh	Apr 1921	Dec 2024	Water
Sandstone Rapids	Wisconsin Public Service Corp	Town of Stephenson, WI	9 GWh	Dec 1924	Dec 2024	Water
Tomahawk	Wisconsin Public Service Corp	Tomahawk, WI	11 GWh	Dec 1937	Dec 2024	Water
West Marinette	Wisconsin Public Service Corp	Peshtigo, WI	31 GWh	May 1971	Dec 2024	Natural Gas
Wausau	Wisconsin Public Service Corp	Wausau, WI	19 GWh	Feb 1921	Dec 2024	Water
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
Arcadia Electric	City of Arcadia - (WI)	Arcadia, WI	150 MWh	Dec 1929	Dec 2024	Distillate Fuel Oil : 67.3% Natural Gas : 32.7%
Barron	City of Barron - (WI)	Barron, WI	342 MWh	Jul 1923	Dec 2024	Water
Cashton	Village of Cashton - (WI)	Cashton, WI	8 MWh	Jul 1932	Dec 2024	Distillate Fuel Oil : 98.9% Natural Gas : 1.1%
Cumberland (WI)	City of Cumberland - (WI)	Cumberland, WI	260 MWh	Jul 1939	Dec 2024	Distillate Fuel Oil : 71.5% Natural Gas : 28.5%
Elroy	City of Elroy - (WI)	Elroy, WI	2 MWh	Apr 1973	Dec 2024	Distillate Fuel Oil
Fennimore	City of Fennimore - (WI)	Fennimore, WI	27 MWh	Jan 1952	Dec 2024	Distillate Fuel Oil
Kaukauna Gas Turbine	City of Kaukauna	Kaukauna, WI	2 GWh	Apr 1969	Dec 2024	Natural Gas
Little Chute	City of Kaukauna	Combined Locks, WI	24 GWh	May 1948	Dec 2024	Water
Rapide Croche	City of Kaukauna	Kaukana, WI	17 GWh	Dec 1925	Dec 2024	Water
La Farge	La Farge Municipal Electric Co	La Farge, WI	5 MWh	Sep 1990	Dec 2024	Distillate Fuel Oil
New Lisbon	City of New Lisbon	New Lisbon, WI	19 MWh	Dec 1965	Dec 2024	Distillate Fuel Oil
Viola	Village of Viola - (WI)	Viola, WI	5 MWh	Dec 2001	Dec 2024	Distillate Fuel Oil
Flambeau Hydroelectric Station	Dairyland Power Coop	Ladysmith, WI	62 GWh	Dec 1950	Dec 2024	Water
Stiles	Oconto Electric Cooperative	Oconto Falls, WI	6 GWh	Feb 1949	Dec 2024	Water
Combined Locks	City of Kaukauna	Combined Locks, WI	43 GWh	Jan 1988	Dec 2024	Water
Cascade Creek	Rochester Public Utilities	Rochester, MN	29 GWh	May 1975	Dec 2024	Natural Gas : 99.0% Distillate Fuel Oil : 1.0%
Electrifarm	MidAmerican Energy Co	Waterloo, IA	11 GWh	Apr 1975	Dec 2024	Natural Gas
Cornell	Northern States Power Co - Minnesota	Chippewa Falls, WI	82 GWh	Jun 1976	Dec 2024	Water
Durant	City of Durant - (IA)	Durant, IA	10 MWh	Jun 1970	Dec 2024	Distillate Fuel Oil
Apple River	Northern States Power Co - Minnesota	Somerset, WI	13 GWh	Dec 1900	Dec 2024	Water
Pearl Station	Prairie Power, Inc	Pearl, IL	161 MWh	May 1973	Dec 2024	Distillate Fuel Oil
Germantown	Wisconsin Electric Power Co	Germantown, WI	28 GWh	Jun 1978	Dec 2024	Natural Gas : 94.1% Distillate Fuel Oil : 5.9%
Hutchinson Plant #2	Hutchinson Utilities Comm	Hutchinson, MN	1 GWh	Oct 1994	Dec 2024	Natural Gas
Detour	Cloverland Electric Co-op	Detour, MI	2 GWh	Sep 1973	Dec 2024	Distillate Fuel Oil
Sam Rayburn Dam	USACE-Fort Worth District	Jasper, TX	199 GWh	Aug 1965	Dec 2024	Water
Ames GT	City of Ames - (IA)	Ames, IA	420 MWh	Apr 1972	Dec 2024	Distillate Fuel Oil
Waverly Municipal Electric North Plant	Waverly Municipal Elec Utility	Waverly, IA	232 MWh	Jul 1958	Dec 2024	Distillate Fuel Oil : 55.1% Natural Gas : 44.9%
D G Hunter	City of Alexandria - (LA)	Alexandria, LA	69 GWh	Apr 1965	Dec 2024	Natural Gas
Mexico	Union Electric Co - (MO)	Mexico, MO	767 MWh	Aug 1978	Dec 2024	Distillate Fuel Oil
Moberly	Union Electric Co - (MO)	Moberly, MO	34 MWh	Jul 1978	Dec 2024	Distillate Fuel Oil
Moreau	Union Electric Co - (MO)	Moreau, MO	1 GWh	Jul 1978	Dec 2024	Distillate Fuel Oil
Rock Lake CT	Great River Energy	Pine City, MN	270 MWh	Mar 1978	Dec 2024	Distillate Fuel Oil
St Bonifacius	Great River Energy	St. Bonifacius, MN	2 GWh	May 1978	Dec 2024	Distillate Fuel Oil
Sibley No Two	City of Sibley - (IA)	Sibley, IA	38 MWh	Nov 1987	Dec 2024	Distillate Fuel Oil : 67.1% Natural Gas : 32.9%
Hoist	Upper Peninsula Power Company	Negaunee, MI	13 GWh	Jan 1988	Dec 2024	Water
McClure Dam	Upper Peninsula Power Company	Marquette, MI	32 GWh	Jan 1988	Dec 2024	Water
Cataract (MI)	Cataract Hydro, LLC	Gwinn, MI	5 GWh	Jan 1988	Dec 2024	Water
Whillock	Arkansas Electric Coop Corp	Morrilton, AR	139 GWh	Sep 1993	Dec 2024	Water
Pleasant Hill	MidAmerican Energy Co	Pleasant Hill, IA	22 GWh	May 1990	Dec 2024	Natural Gas : 99.9%
Concord	Wisconsin Electric Power Co	Watertown, WI	175 GWh	Jun 1993	Dec 2024	Natural Gas : 99.8%
Murray	City of North Little Rock - (AR)	North Little Rock, AR	114 GWh	Sep 1988	Dec 2024	Water
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%
Angus Anson	Northern States Power Co - Minnesota	Sioux Falls, SD	237 GWh	Jul 1994	Dec 2024	Natural Gas : 99.2% Distillate Fuel Oil : 0.8%
Dam 2	Arkansas Electric Coop Corp	Dumas, AR	401 GWh	May 1999	Dec 2024	Water
491 E 48th Street	City of Holland	Holland, MI	92 GWh	Apr 1992	Dec 2024	Natural Gas
Paris (WI)	Wisconsin Electric Power Co	Union Grove, WI	227 GWh	Feb 1995	Dec 2024	Natural Gas
Water Street Station	City of Bay City - (MI)	Bay City, MI	239 MWh	Jul 1980	Dec 2024	Natural Gas : 86.5% Distillate Fuel Oil : 13.5%
Henry Station	City of Bay City - (MI)	Bay City, MI	653 MWh	Apr 1993	Dec 2024	Natural Gas : 94.6% Distillate Fuel Oil : 5.4%
Lakefield Utilities	City of Lakefield - (MN)	Lakefield, MN	6 MWh	Jan 1985	Dec 2024	Distillate Fuel Oil
Interstate	City of Springfield - (IL)	Springfield, IL	51 GWh	Aug 1997	Dec 2024	Natural Gas : 99.9%
Marceline	City of Marceline - (MO)	Marceline, MO	4 MWh	Jul 1989	Dec 2024	Distillate Fuel Oil
Upper Sterling	City of Rock Falls - (IL)	Rock Falls, IL	9 GWh	May 1988	Dec 2024	Water
Panora	City of Panora - (IA)	Panora, IA	5 MWh	Dec 1987	Dec 2024	Distillate Fuel Oil
South Plant (IA)	Waverly Municipal Elec Utility	Waverly, IA	51 MWh	Apr 2000	Dec 2024	Distillate Fuel Oil
Georgetown	AES Indiana	Indianapolis, IN	466 GWh	May 2000	Dec 2024	Natural Gas
Tilton	Tilton Energy LLC	Tilton, IL	69 GWh	May 1999	Dec 2024	Natural Gas
Henry County	Duke Energy Indiana, LLC	New Castle, IN	345 GWh	Jun 2001	Dec 2024	Natural Gas
Custer Energy Center	Manitowoc Public Utilities	Manitowoc, WI	6 GWh	May 1999	Dec 2024	Natural Gas
West Marinette 34	Madison Gas & Electric Co	Peshtigo, WI	44 GWh	May 2000	Dec 2024	Natural Gas
Pine Street	Village of Sebewaing - (MI)	Sebewaing, MI	14 GWh	May 1969	Dec 2024	Natural Gas
Argyle	City of Argyle - (WI)	Argyle, WI	24 MWh	Dec 1928	Dec 2024	Water : 87.5% Distillate Fuel Oil : 12.5%
Alsey	Prairie Power, Inc	Alsey, IL	39 GWh	May 1999	Dec 2024	Natural Gas
Big Quinnesec 92	Wisconsin Electric Power Co	Iron Mountain, MI	89 GWh	Oct 1949	Dec 2024	Water
Big Quinnesec 61	Wisconsin Electric Power Co	Iron Mountain, MI	4 GWh	Apr 1914	Dec 2024	Water
Kaukauna City Hydro	City of Kaukauna	Kaukauna, WI	23 GWh	Nov 1940	Dec 2024	Water
Beaver Island	Great Lakes Energy Coop	Beaver Island, MI	71 MWh	Aug 2000	Dec 2024	Distillate Fuel Oil
Pleasant Valley (MN)	Great River Energy	Dexter, MN	86 GWh	Apr 2001	Dec 2024	Natural Gas : 99.3% Distillate Fuel Oil : 0.7%
Minnesota River	Minnesota Municipal Power Agny	Chaska, MN	6 GWh	Apr 2001	Dec 2024	Natural Gas
Knoxville Industrial	MidAmerican Energy Co	Knoxville, IA	39 MWh	Mar 2000	Dec 2024	Distillate Fuel Oil
Shenandoah	MidAmerican Energy Co	Shenandoah, IA	44 MWh	Mar 2000	Dec 2024	Distillate Fuel Oil
Waterloo Lundquist	MidAmerican Energy Co	Waterloo, IA	38 MWh	Mar 2000	Dec 2024	Distillate Fuel Oil
Avenue A Generator Sets	City of Rock Falls - (IL)	Rock Falls, IL	161 MWh	Aug 2000	Dec 2024	Distillate Fuel Oil
North Generation Plant	City of Greenfield - (IA)	Greenfield, IA	105 MWh	Dec 2001	Dec 2024	Distillate Fuel Oil
Gilliam South	City of Stuart - (IA)	Stuart, IA	2 MWh	Jan 2001	Dec 2024	Distillate Fuel Oil
Elk Mound	Dairyland Power Coop	Elk Mound, WI	25 GWh	May 2001	Dec 2024	Natural Gas : 99.5% Distillate Fuel Oil : 0.5%
Earlville	City of Earlville - (IA)	Earlville, IA	7 MWh	Jun 2001	Dec 2024	Distillate Fuel Oil
Wind Turbine	Madison Gas & Electric Co	Casco, WI	13 GWh	May 1999	Dec 2024	Wind
Brooklyn City North Plant	City of Brooklyn - (IA)	Brooklyn, IA	14 MWh	Apr 2002	Dec 2024	Distillate Fuel Oil
Lakefield Junction	Great River Energy	Trimont, MN	64 GWh	May 2001	Dec 2024	Natural Gas
South Strawberry	City of Strawberry Point	Strawberry Point, IA	13 MWh	Dec 2001	Dec 2024	Distillate Fuel Oil
Gaylord - Wolverine	Wolverine Power Supply Coop	Gaylord, MI	23 GWh	May 2001	Dec 2024	Natural Gas
Industrial Park	City of Rock Falls - (IL)	Rock Falls, IL	615 MWh	Jun 2001	Dec 2024	Distillate Fuel Oil
Solway CT	Otter Tail Power Co	Solway, MN	125 GWh	Apr 2003	Dec 2024	Natural Gas
Lawrence County Station	Hoosier Energy R E C, Inc	Mitchell, IN	109 GWh	Apr 2005	Dec 2024	Natural Gas

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#61	Alcoa Power Generating, Inc. - Yadkin Division	733.4 GWh	4
#26	Associated Electric Cooperative, Inc.	23.4 TWh	47
#13	Duke Energy Carolinas	112.0 TWh	565
#52	Duke Energy Progress West	4.1 TWh	10
#24	Louisville Gas and Electric Company and Kentucky Utilities Company	34.2 TWh	25
#1	PJM Interconnection, LLC	866.1 TWh	2,465
#6	Southern Company Services, Inc. - Trans	249.8 TWh	417
#5	Southwest Power Pool	298.0 TWh	835
#49	Southwestern Power Administration	5.2 TWh	34
#8	Tennessee Valley Authority	160.6 TWh	204

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#1	PJM Interconnection, LLC	866.1 TWh	2,465
#2	Midcontinent Independent System Operator, Inc.	651.4 TWh	2,831
#3	Electric Reliability Council of Texas, Inc.	482.3 TWh	1,313
#5	Southwest Power Pool	298.0 TWh	835
#6	Southern Company Services, Inc. - Trans	249.8 TWh	417
#7	California Independent System Operator	188.7 TWh	2,075
#8	Tennessee Valley Authority	160.6 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	112.0 TWh	565