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
Rockville Solar II, LLC	Greenbacker Renewable Energy Corporation	Indianapolis, IN	812 MWh	Jul 2014	Dec 2024	Solar
Thunder Spirit Wind, LLC	Montana-Dakota Utilities Co	Hettinger, ND	523 GWh	Nov 2015	Dec 2024	Wind
St. Olaf Wind Turbine	St. Olaf College	Northfield, MN	3 GWh	Aug 2006	Dec 2024	Wind
St. Olaf StandBy Generators	St. Olaf College	Northfield, MN	31 MWh	May 1999	Dec 2024	Distillate Fuel Oil
East Chicago	Altus Power America Management, LLC	East Chicago, IN	3 GWh	Feb 2013	Dec 2024	Solar
Griffith	Altus Power America Management, LLC	Griffith, IN	3 GWh	Feb 2013	Dec 2024	Solar
Hoopeston Wind LLC	Hoopeston Wind LLC	Rossville, IL	371 GWh	Feb 2015	Dec 2024	Wind
Michelangelo Wind 3 LLC	Michelangelo Wind 3 LLC	Huxley, IA	9 GWh	Jan 2017	Dec 2024	Wind
Carroll Area Wind Farm	SRIV Partnership LLC	Templeton, IA	54 GWh	Dec 2014	Dec 2024	Wind
Holland Energy Park	City of Holland	Holland, MI	893 GWh	May 2017	Dec 2024	Natural Gas
Belmont	Marion Solar LLC	Indianapolis, IN	5 GWh	Oct 2015	Dec 2024	Solar
Marion Solar LNG	Marion Solar LLC	Indianapolis, IN	2 GWh	Sep 2015	Dec 2024	Solar
Univ Minnesota CHP Plant	University of Minnesota Central Utilities	Minneapolis, MN	166 GWh	Oct 2017	Dec 2024	Natural Gas : 99.9%
Border Winds Wind Farm	Northern States Power Co - Minnesota	Rolla, ND	614 GWh	Jul 2015	Dec 2024	Wind
Pleasant Valley Wind Farm	Northern States Power Co - Minnesota	Dexter, MN	770 GWh	Jul 2015	Dec 2024	Wind
Optimum Wind 5 LLC	Optimum Wind 5 LLC	Nevada, IA	9 GWh	Feb 2017	Dec 2024	Wind
Optimum Wind 6 LLC	Optimum Wind 6 LLC	Nevada, IA	9 GWh	Feb 2017	Dec 2024	Wind
Optimum Wind 7 LLC	Optimum Wind 7 LLC	Nevada, IA	11 GWh	Feb 2017	Dec 2024	Wind
Optimum Wind 4 LLC	Optimum Wind 4 LLC	Nevada, IA	10 GWh	Feb 2017	Dec 2024	Wind
Optimum Wind 3 LLC	Optimum Wind 3 LLC	Nevada, IA	10 GWh	Feb 2017	Dec 2024	Wind
Leonardo Wind 1 LLC	Leonardo Wind 1 LLC	Alden, IA	10 GWh	Nov 2016	Dec 2024	Wind
Venus Wind 3 LLC	Venus Wind 3 LLC	Grinnell, IA	10 GWh	Feb 2017	Dec 2024	Wind
Michelangelo Wind 1 LLC	Michelangelo Wind 1 LLC	Huxley, IA	8 GWh	Feb 2017	Dec 2024	Wind
Michelangelo Wind 4 LLC	Michelangelo Wind 4 LLC	Ames, IA	10 GWh	Nov 2016	Dec 2024	Wind
Hidden View Dairy, LLC	Hidden View Dairy, LLC	Rensselaer, IN	4 GWh	Jan 2007	Dec 2024	Natural Gas
IND Solar Farm (Phase IIA)	Terraform Arcadia	Indianapolis, IN	10 GWh	Nov 2014	Dec 2024	Solar
Duke Building 87	Concord New Energy	Indianapolis, IN	3 GWh	Nov 2014	Dec 2024	Solar
Duke Building 98	Concord New Energy	Indianapolis, IN	4 GWh	Nov 2014	Dec 2024	Solar
Duke Building 129	Concord New Energy	Indianapolis, IN	4 GWh	Nov 2014	Dec 2024	Solar
Lennon Generating	North American Natural Res	Lennon, MI	30 GWh	Jan 2001	Dec 2024	Landfill Gas
East. Michigan Univ. Heating Plant	East. Michigan Univ. Heating Plant	Ypsilanti, MI	37 GWh	Sep 1987	Dec 2024	Natural Gas
Coldwater Peaking Plant	Coldwater Board of Public Util	Coldwater, MI	288 MWh	Jun 2015	Dec 2024	Natural Gas
IMPA Rensselaer Solar Park	Indiana Municipal Power Agency	Rensselaer, IN	985 MWh	Apr 2014	Dec 2024	Solar
IMPA Peru Solar Park	Indiana Municipal Power Agency	Peru, IN	4 GWh	Jul 2015	Dec 2024	Solar
IMPA Tell City Solar Park	Indiana Municipal Power Agency	Tell City, IN	2 GWh	Jun 2015	Dec 2024	Solar
IMPA Crawfordsville Solar Park	Indiana Municipal Power Agency	Crawfordsville, IN	4 GWh	Aug 2015	Dec 2024	Solar
Adams Wind	MidAmerican Energy Co	Lenox, IA	474 GWh	Sep 2015	Dec 2024	Wind
IMPA Pendleton Solar Park	Indiana Municipal Power Agency	Pendleton, IN	3 GWh	Sep 2015	Dec 2024	Solar
BioTown Ag	Bio Town Biogas, LLC	Reynolds, IN	33 GWh	May 2011	Dec 2024	Other Biomass Gas
Heartland Community College	Heartland Community College	Normal, IL	4 GWh	May 2012	Dec 2024	Wind
Fremont Community Digester, LLC	Generate Fremont Digester, LLC.	Newaygo, MI	375 MWh	Nov 2012	Dec 2024	Other Biomass Gas
Munster Landfill Gas-to-Energy	Town of Munster	Munster, IN	4 GWh	Oct 2012	Dec 2024	Landfill Gas
INDY III	Terraform Arcadia	Indianapolis, IN	3 GWh	Jul 2015	Dec 2024	Solar
Indy Grocers	Terraform Arcadia	Indianapolis, IN	1 GWh	May 2015	Dec 2024	Solar
Twin Falls (WI)	Wisconsin Electric Power Co	Florence, WI	31 GWh	Jun 2016	Dec 2024	Water
Alpine Power Plant	Wolverine Power Supply Coop	Elmira, MI	499 GWh	May 2016	Dec 2024	Natural Gas
New Castle Solar RES	Hoosier Energy R E C, Inc	New Castle, IN	2 GWh	Oct 2015	Dec 2024	Solar
Scotland Solar RES	Hoosier Energy R E C, Inc	Newberry, IN	2 GWh	Oct 2015	Dec 2024	Solar
New Haven Solar RES	Hoosier Energy R E C, Inc	Dale, IN	1 GWh	Aug 2016	Dec 2024	Solar
Lanesville Solar RES	Hoosier Energy R E C, Inc	Lanesville, IN	907 MWh	Nov 2015	Dec 2024	Solar
Ellettsville Solar RES	Hoosier Energy R E C, Inc	Ellettsville, IN	1 GWh	Sep 2016	Dec 2024	Solar
Henryville Solar RES	Hoosier Energy R E C, Inc	Underwood, IN	2 GWh	Aug 2016	Dec 2024	Solar
Spring Mill Solar RES	Hoosier Energy R E C, Inc	Mitchell, IN	2 GWh	Aug 2017	Dec 2024	Solar
Decatur Co. Solar RES (IN)	Hoosier Energy R E C, Inc	Greensburg, IN	1 GWh	Aug 2017	Dec 2024	Solar
Jackson Co. Solar RES	Hoosier Energy R E C, Inc	Columbus, IN	1 GWh	Aug 2017	Dec 2024	Solar
Johnson Co. Solar RES	Hoosier Energy R E C, Inc	Trafalgar, IN	2 GWh	Sep 2016	Dec 2024	Solar
Portage Solar	Ecos Energy LLC	Valparaiso, IN	1 GWh	Oct 2012	Dec 2024	Solar
Lorin Industries	Lorin Industries	Muskegon, MI	5 GWh	Dec 1989	Dec 2024	Natural Gas
McDonald Solar Farm, LLC	Cypress Creek Renewables	West Terre Haute, IN	8 GWh	Nov 2015	Dec 2024	Solar
Pastime Farm, LLC	Cypress Creek Renewables	Brazil, IN	9 GWh	Nov 2015	Dec 2024	Solar
IMPA Huntingburg Solar Park	Indiana Municipal Power Agency	Huntingburg, IN	3 GWh	Aug 2016	Dec 2024	Solar
IMPA Washington Solar Park	Indiana Municipal Power Agency	Washington, IN	4 GWh	Aug 2016	Dec 2024	Solar
Owatonna Energy Station	Southern Minnesota Mun P Agny	Owatonna, MN	13 GWh	Feb 2018	Dec 2024	Natural Gas
O'Brien Wind	MidAmerican Energy Co	Primghar, IA	876 GWh	Aug 2016	Dec 2024	Wind
Ida Grove Wind	MidAmerican Energy Co	Ida Grove, IA	1 TWh	Aug 2016	Dec 2024	Wind
Turrill Solar Farm	DTE Electric Company	Lapeer, MI	25 GWh	Apr 2017	Dec 2024	Solar
O'Shea Solar Farm	DTE Electric Company	Detroit, MI	3 GWh	Jun 2017	Dec 2024	Solar
Crane Solar Facility	Duke Energy Indiana, LLC	Crane, IN	29 GWh	Dec 2016	Dec 2024	Solar
Albany Solar	Enel Green Power NA, Inc.	Albany, MN	19 GWh	Nov 2016	Dec 2024	Solar
Annandale Solar	Enel Green Power NA, Inc.	Annandale, MN	12 GWh	Nov 2016	Dec 2024	Solar
Atwater Solar	Enel Green Power NA, Inc.	Atwater, MN	8 GWh	Nov 2016	Dec 2024	Solar
Chisago Solar	Enel Green Power NA, Inc.	North Branch, MN	12 GWh	Nov 2016	Dec 2024	Solar
Dodge Center Solar	Enel Green Power NA, Inc.	Dodge Center, MN	13 GWh	Nov 2016	Dec 2024	Solar
Eastwood Solar	Enel Green Power NA, Inc.	Mankato, MN	11 GWh	Nov 2016	Dec 2024	Solar
Hastings Solar	Enel Green Power NA, Inc.	Hastings, MN	9 GWh	Nov 2016	Dec 2024	Solar
Lake Emily Solar	Enel Green Power NA, Inc.	St. Peter, MN	9 GWh	Nov 2016	Dec 2024	Solar
Lake Pulaski Solar	Enel Green Power NA, Inc.	Buffalo, MN	12 GWh	Nov 2016	Dec 2024	Solar
Lawrence Creek Solar	Enel Green Power NA, Inc.	Shafer, MN	6 GWh	Nov 2016	Dec 2024	Solar
Montrose Solar	Enel Green Power NA, Inc.	Montrose, MN	7 GWh	Nov 2016	Dec 2024	Solar
Pine Island Solar	Enel Green Power NA, Inc.	Pine Island, MN	8 GWh	Nov 2016	Dec 2024	Solar
Waseca Solar	Enel Green Power NA, Inc.	Waseca, MN	21 GWh	Nov 2016	Dec 2024	Solar
West Faribault Solar	Enel Green Power NA, Inc.	Faribault, MN	10 GWh	Nov 2016	Dec 2024	Solar
West Waconia Solar	Enel Green Power NA, Inc.	Norwood Young America, MN	16 GWh	Nov 2016	Dec 2024	Solar
Wind GEM	Wind GEM, LLC	Stuart, IA	5 GWh	Aug 2015	Dec 2024	Wind
Marquette Energy Center	City of Marquette - (MI)	Marquette, MI	162 GWh	Jul 2017	Dec 2024	Natural Gas : 99.2% Distillate Fuel Oil : 0.8%
Westside Energy Station	Rochester Public Utilities	Rochester, MN	37 GWh	Feb 2018	Dec 2024	Natural Gas
HQC Rock River Solar Power Gen Station	HQC Rock River Solar Power Generation Station LLC	Beloit, WI	3 GWh	Jun 2016	Dec 2024	Solar
St. Mary Clean Energy Center	Cleco Power LLC	Centerville, LA	201 GWh	Jul 2019	Dec 2024	Waste Heat
Empire Solar	Cypress Creek Renewables	Farmington, MN	6 GWh	Nov 2016	Dec 2024	Solar
Blue Lake Solar	Cypress Creek Renewables	Shakopee, MN	4 GWh	Nov 2016	Dec 2024	Solar
Shakopee Energy Park	Minnesota Municipal Power Agny	Shakopee, MN	24 GWh	Jan 2017	Dec 2024	Natural Gas
Dickinson Solar Array	Great River Energy	Buffalo, MN	3 GWh	Jul 2016	Dec 2024	Solar
Pierre Solar	Pierre Solar	Pierre, SD	2 GWh	Aug 2016	Dec 2024	Solar
WakeSun LLC	SunShare Management	Cold Spring, MN	4 GWh	Dec 2016	Dec 2024	Solar
BentonSun LLC	SunShare Management	Norwood Young America, MN	9 GWh	Nov 2016	Dec 2024	Solar
Chisago Community Solar	Chisago Community Solar	Taylor Falls, MN	7 GWh	Nov 2016	Dec 2024	Solar
Ursa Community Solar	Ursa Community Solar	Farmington, MN	8 GWh	Dec 2016	Dec 2024	Solar
Sunrise Community Solar	Sunrise Community Solar	North Branch, MN	8 GWh	Nov 2016	Dec 2024	Solar
Rosemount Community Solar	Rosemount Community Solar	Rosemount, MN	8 GWh	Nov 2016	Dec 2024	Solar
Paynesville Community Solar	Paynesville Community Solar	Paynesville, MN	8 GWh	Nov 2016	Dec 2024	Solar

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