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
Pine Island Solar	Enel Green Power NA, Inc.	Pine Island, MN	8 GWh	Nov 2016	Dec 2025	Solar
Waseca Solar	Enel Green Power NA, Inc.	Waseca, MN	21 GWh	Nov 2016	Dec 2025	Solar
West Faribault Solar	Enel Green Power NA, Inc.	Faribault, MN	10 GWh	Nov 2016	Dec 2025	Solar
Dodge Center Solar	Enel Green Power NA, Inc.	Dodge Center, MN	13 GWh	Nov 2016	Dec 2025	Solar
Eastwood Solar	Enel Green Power NA, Inc.	Mankato, MN	11 GWh	Nov 2016	Dec 2025	Solar
West Waconia Solar	Enel Green Power NA, Inc.	Norwood Young America, MN	16 GWh	Nov 2016	Dec 2025	Solar
Hastings Solar	Enel Green Power NA, Inc.	Hastings, MN	8 GWh	Nov 2016	Dec 2025	Solar
Lake Emily Solar	Enel Green Power NA, Inc.	St. Peter, MN	9 GWh	Nov 2016	Dec 2025	Solar
Alverno Hydro Plant	Energen Renewables, LLC	Cheboygan, MI	3 GWh	Dec 1959	Dec 2025	Water
Watervliet	Energy Developments, Inc d/b/a EDL	Watervliet, MI	26 GWh	Jan 2013	Dec 2025	Landfill Gas
Pinconning White Feather	Energy Developments, Inc d/b/a EDL	Pinconning, MI	16 GWh	Feb 2009	Dec 2025	Landfill Gas
Brent Run Generating Station	Energy Developments, Inc d/b/a EDL	Montrose, MI	50 GWh	Dec 1997	Dec 2025	Landfill Gas
Bryon Center	Energy Developments, Inc d/b/a EDL	Byron Center, MI	31 GWh	Feb 2009	Dec 2025	Landfill Gas
Grand Blanc Generating Station	Energy Developments, Inc d/b/a EDL	Grand Blanc, MI	50 GWh	Jun 1994	Dec 2025	Landfill Gas
Coopersville	Energy Developments, Inc d/b/a EDL	Coopersville, MI	38 GWh	May 1994	Dec 2025	Landfill Gas
Grand River	Energy Developments, Inc d/b/a EDL	Grand Ledge, MI	8 GWh	Mar 1991	Dec 2025	Landfill Gas
ENGIE 2020 ProjectCo-WI1 LLC	ENGIE 2020 ProjectCo-WI1 LLC	Fond Du Lac, WI	2 GWh	Nov 2021	Dec 2025	Solar
Goose Lake MN DPC-GM	ENGIE Generation North America LLC	Albert Lea, MN	3 GWh	Jan 2019	Dec 2025	Solar
Maywood Photovoltaic Project	ENI New Energy US Inc	Indianapolis, IN	11 GWh	Feb 2014	Dec 2024	Solar
ACC	Entegrity Solar ACC, LLC	Searcy, AR	4 GWh	Apr 2023	Dec 2024	Solar
ADC Varner	Entegrity Solar ADC, LLC	Gould, AR	9 GWh	Feb 2024	Dec 2024	Solar
Crossett SD	Entegrity Solar Crossett SD, LLC	Crossett, AR	2 GWh	Apr 2022	Dec 2024	Solar
El Dorado AR	Entegrity Solar El Dorado SD, LLC	El Dorado, AR	2 GWh	Jan 2024	Dec 2024	Solar
LRWRA	Entegrity Solar LRWRA, LLC	Little Rock, AR	2 GWh	Jul 2023	Dec 2024	Solar
Rivercrest SD	Entegrity Solar Rivercrest SD, LLC	Wilson, AR	2 GWh	Feb 2022	Dec 2024	Solar
Southside SD	Entegrity Solar Southside SD, LLC	Little Rock, AR	2 GWh	May 2023	Dec 2024	Solar
Searcy Water II	Entegrity Solar SWU 2, LLC	Searcy, AR	4 GWh	May 2021	Dec 2024	Solar
Searcy Water I	Entegrity Solar SWU, LLC	Searcy, AR	834 MWh	May 2021	Dec 2024	Solar
White River Medical Center	Entegrity Solar WRMC, LLC	Newport, AR	5 GWh	Sep 2023	Dec 2024	Solar
Driver Solar	Entergy Arkansas LLC	Osceola, AR	333 GWh	Oct 2024	May 2026	Solar
West Memphis Solar Station	Entergy Arkansas LLC	Crawfordsville, AR	316 GWh	Nov 2024	May 2026	Solar
Walnut Bend Solar Station PV	Entergy Arkansas LLC	Moro, AR	205 GWh	Aug 2024	May 2026	Solar
Hot Spring Generating Facility	Entergy Arkansas LLC	Malvern, AR	3 TWh	May 2002	May 2026	Natural Gas
Union Power Station	Entergy Arkansas LLC	El Dorado, AR	12 TWh	Dec 2002	May 2026	Natural Gas
Lake Catherine	Entergy Arkansas LLC	Jones Mill, AR	336 GWh	Mar 1970	Dec 2025	Natural Gas
Arkansas Nuclear One	Entergy Arkansas LLC	Russellville, AR	14 TWh	Nov 1974	May 2026	Nuclear
Remmel	Entergy Arkansas LLC	Malvern, AR	46 GWh	Dec 1924	Dec 2025	Water
Carpenter	Entergy Arkansas LLC	Hot Springs, AR	147 GWh	Dec 1931	Dec 2025	Water
Independence Steam Electric Station	Entergy Arkansas LLC	Newark, AR	7 TWh	Dec 1982	May 2026	Subbituminous Coal : 99.9%
White Bluff	Entergy Arkansas LLC	Redfield, AR	4 TWh	Jul 1980	Mar 2026	Subbituminous Coal : 99.5%
Calcasieu	Entergy Louisiana LLC	Sulphur, LA	139 GWh	Apr 2000	Dec 2025	Natural Gas
Perryville Power Station	Entergy Louisiana LLC	Sterlington, LA	4 TWh	May 2001	May 2026	Natural Gas
Waterford 1 & 2	Entergy Louisiana LLC	Killona, LA	319 GWh	Jun 1975	Dec 2024	Natural Gas : 99.5% Distillate Fuel Oil : 0.5%
Washington Parish Energy Center	Entergy Louisiana LLC	Bogalusa, LA	315 GWh	Oct 2020	May 2026	Natural Gas
Ouachita	Entergy Louisiana LLC	Sterlington, LA	4 TWh	Jul 2002	May 2026	Natural Gas
Louisiana 1	Entergy Louisiana LLC	Baton Rouge, LA	3 TWh	Sep 1951	May 2026	Natural Gas : 71.5% Other Gas : 28.5%
River Bend	Entergy Louisiana LLC	St. Francisville, LA	8 TWh	May 1986	May 2026	Nuclear
R S Nelson	Entergy Louisiana LLC	Westlake, LA	2 TWh	Jan 1959	May 2026	Subbituminous Coal : 99.6%
Waterford 3	Entergy Louisiana LLC	Killona, LA	10 TWh	Aug 1985	May 2026	Nuclear
Little Gypsy	Entergy Louisiana LLC	La Place, LA	964 GWh	Feb 1961	May 2026	Natural Gas
Nine Mile Point	Entergy Louisiana LLC	Westwego, LA	8 TWh	Oct 1955	May 2026	Natural Gas : 99.2% Distillate Fuel Oil : 0.8%
Sterlington Solar	Entergy Louisiana LLC	Sterlington, LA	37 GWh	-	May 2026	Solar
St. Charles Power Station (LA)	Entergy Louisiana LLC	La Place, LA	5 TWh	Apr 2019	May 2026	Natural Gas
Lake Charles Power	Entergy Louisiana LLC	West Lake, LA	7 TWh	Feb 2020	May 2026	Natural Gas
Attala	Entergy Mississippi LLC	Sallis, MS	3 TWh	Feb 2001	May 2026	Natural Gas
Hinds Energy Facility	Entergy Mississippi LLC	Jackson, MS	2 TWh	Apr 2001	May 2026	Natural Gas
Gerald Andrus	Entergy Mississippi LLC	Greenville, MS	567 GWh	Dec 1974	Nov 2025	Natural Gas : 99.9%
TCI Alvar	Entergy New Orleans, LLC	New Orleans, LA	2 GWh	Mar 2019	Dec 2025	Solar
TCI France	Entergy New Orleans, LLC	New Orleans, LA	1 GWh	Mar 2019	Dec 2025	Solar
New Orleans Solar Station	Entergy New Orleans, LLC	New Orleans, LA	1 GWh	Nov 2019	Dec 2025	Solar
New Orleans Power	Entergy New Orleans, LLC	New Orleans, LA	157 GWh	Apr 2020	May 2026	Natural Gas
ENO Paterson Solar	Entergy New Orleans, LLC	New Orleans, LA	1 GWh	May 2016	Dec 2025	Solar
Montgomery County	Entergy Texas Inc.	Willis, TX	6 TWh	Dec 2020	May 2026	Natural Gas
Sabine	Entergy Texas Inc.	Orange, TX	4 TWh	Dec 1961	May 2026	Natural Gas
Hardin County Peaking Facility	Entergy Texas Inc.	Kountze, TX	257 GWh	Jun 2001	Dec 2025	Natural Gas
Lewis Creek	Entergy Texas Inc.	Willis, TX	2 TWh	Nov 1970	May 2026	Natural Gas
Neptune Gas Processing Plant	Enterprise Products Optg LP	Centerville, LA	14 GWh	Jan 2004	Dec 2025	Other Fuel
Epic Verona	Epic Hosting, LLC	Verona, WI	2 GWh	May 2009	Dec 2025	Solar : 90.8% Distillate Fuel Oil : 9.2%
4710 Hosting	Epic Hosting, LLC	Rochester, MN	63 MWh	May 2012	Dec 2025	Distillate Fuel Oil
Lake Charles Polymers	Equistar Chemicals LP	Westlake, LA	195 GWh	Aug 2011	May 2026	Natural Gas
Ergon Refining Vicksburg	Ergon Refining Inc	Vicksburg, MS	35 GWh	Feb 1995	Dec 2025	Natural Gas
Erin Garden Solar	Erin Garden LLC	City of Green Isle, MN	2 GWh	Mar 2020	Dec 2025	Solar
Armstrong Solar	ETCAP NES CS MN 06 LLC	Glenwood, MN	5 GWh	Feb 2018	Dec 2025	Solar
Everson Garden	Everson Garden LLC	Waseca, MN	2 GWh	Apr 2022	Dec 2025	Solar
Evonik Industries AG	Evonik Degussa Corporation	Lafayette, IN	7 MWh	Apr 1992	Dec 2024	Distillate Fuel Oil
Ewington Energy Systems, LLC	Ewington Energy Systems, LLC	Worthington, MN	81 GWh	Dec 2007	Dec 2025	Wind
Nicollet Garden	Excelsior Energy Capital	Courtland, MN	2 GWh	Nov 2020	Dec 2025	Solar
Union Garden	Excelsior Energy Capital	Northfield, MN	2 GWh	Feb 2021	Dec 2025	Solar
Silver Lake Garden	Excelsior Energy Capital	Waseca, MN	2 GWh	Dec 2020	Dec 2025	Solar
Lyman Garden	Excelsior Energy Capital	Northfield, MN	2 GWh	Oct 2020	Dec 2025	Solar
Marion Garden	Excelsior Energy Capital	Faribault, MN	2 GWh	Oct 2020	Dec 2025	Solar
ExxonMobil Baton Rouge Turbine Generator	Exxon Mobil Corp	Baton Rouge, LA	552 GWh	Apr 1990	Dec 2025	Natural Gas
ExxonMobil Beaumont Refinery	ExxonMobil Oil Corp	Beaumont, TX	4 TWh	Dec 1965	May 2026	Natural Gas : 96.6% Other Gas : 3.4%
Fairbanks Solar Project	Fairbanks Solar Energy Center LLC	Fairbanks, IN	510 GWh	Apr 2025	May 2026	Solar
Falls Creek Garden	Falls Creek Garden LLC	Faribault, MN	2 GWh	Jan 2020	Oct 2025	Solar
Farmers Electric Cooperative - Kalona	Farmers Electric Coop - (IA)	Kalona, IA	174 MWh	Feb 2001	Dec 2025	Distillate Fuel Oil
Farmington Holdco Solar	Farmington Holdco LLC	Farmington, MN	8 GWh	Jan 2017	Dec 2025	Solar
Welcome Wind Turbine	Federated Rural Electric Assn	Welcome, MN	3 GWh	Apr 2008	Dec 2025	Wind
Fey Windfarm LLC	Fey Windfarm LLC	Woodstock, MN	4 GWh	Aug 2003	Dec 2025	Wind
Fiber Recovery, Inc.	Fiber Recovery, Inc	Ringle, WI	7 GWh	Dec 2007	Dec 2024	Landfill Gas
Sidney A Murray Jr Hydroelectric	First National Bank-Commerce	Vidalia, LA	989 GWh	Apr 1990	Dec 2025	Water
Flat Fork Solar	Flat Fork Solar, LLC	Wheatley, AR	339 GWh	Jul 2025	May 2026	Solar
Flint Hills Resources Pine Bend, LLC	Flint Hills Resources Pine Bend, LLC	Rosemount, MN	362 GWh	Apr 2019	Dec 2025	Natural Gas : 78.8% Solar : 21.2%
Flodquist Community Solar LLC CSG	Flodquist Community Solar LLC	Lindstrom, MN	2 GWh	Jul 2021	Dec 2025	Solar
Ford County Wind Farm LLC	Ford Ridge	Ford County, IL	469 GWh	Feb 2022	May 2026	Wind
IA - City of Ames - Airport Road	Forefront Power, LLC	Ames, IA	3 GWh	Nov 2020	Dec 2024	Solar
Foreman's Hill Community Solar	Foreman's Hill CSG LLC	Red Wing, MN	7 GWh	Jun 2018	Dec 2024	Solar
Forest Lake Solar CSG	Forest Lake Holdco LLC	Scandia, MN	7 GWh	Jun 2017	Dec 2025	Solar
Forgeview Solar	Forgeview Solar, LLC	Blytheville, AR	187 GWh	Nov 2025	May 2026	Solar
Formosa Plastics	Formosa Plastics Corp	Baton Rouge, LA	416 GWh	Apr 1985	Dec 2025	Natural Gas

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