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
Ouachita	Entergy Louisiana LLC	Sterlington, LA	4 TWh	Jul 2002	May 2026	Natural Gas
Ottumwa City of	City of Ottumwa - (IA)	Ottumwa, IA	3 GWh	Jul 1931	Dec 2025	Water
Ottumwa	Interstate Power and Light Co	Ottumwa, IA	3 TWh	Apr 1981	May 2026	Subbituminous Coal : 99.6%
Otter Creek Ethanol Poet - Ashton	Otter Creek Ethanol LLC - Poet Ashton	Ashton, IA	45 GWh	Feb 2004	May 2026	Natural Gas
Otsego Mill Power Plant	Otsego Paper Inc	Otsego, MI	163 GWh	Oct 1995	Dec 2025	Natural Gas
Osceola Windpower II	Osceola Windpower II	Harris, IA	191 GWh	Aug 2008	May 2026	Wind
Osage (IA)	City of Osage - (IA)	Osage, IA	5 GWh	Aug 1963	Dec 2025	Wind : 81.8% Solar : 18.2%
Osage Dam	Union Electric Co - (MO)	Eldon, MO	499 GWh	Sep 1931	Dec 2025	Water
Orion Community Solar	Orion Community Solar	St. Joseph, MN	4 GWh	Dec 2016	Dec 2025	Solar
Orient Wind Farm	MidAmerican Energy Co	Orient, IA	2 TWh	Nov 2018	May 2026	Wind
OREG 3 Inc	Ormat Nevada Inc	Trimont, MN	43 GWh	Jul 2010	May 2026	Waste Heat
Optimum Wind 7 LLC	Novis Renewables, LLC	Nevada, IA	9 GWh	Feb 2017	Dec 2025	Wind
Optimum Wind 6 LLC	Novis Renewables, LLC	Nevada, IA	9 GWh	Feb 2017	Dec 2025	Wind
Optimum Wind 5 LLC	Novis Renewables, LLC	Nevada, IA	9 GWh	Feb 2017	Dec 2025	Wind
Optimum Wind 4 LLC	Novis Renewables, LLC	Nevada, IA	8 GWh	Feb 2017	Dec 2025	Wind
Optimum Wind 3 LLC	Novis Renewables, LLC	Nevada, IA	7 GWh	Feb 2017	Dec 2025	Wind
Onion River	Wisconsin Power & Light Co	Sheboygan Cedar Grove, WI	260 GWh	Nov 2023	May 2026	Solar
Onalaska Campus Landfill Biogas	Gundersen Lutheran Biogas I LLC	Onalaska, WI	4 GWh	Feb 2012	Dec 2025	Landfill Gas
Omega Hills Gas Recovery	WM Renewable Energy LLC	Germantown, WI	78 GWh	Nov 1985	May 2026	Landfill Gas
Olney Solar II CSG	Olney Solar II, LLC	Olney, IL	4 GWh	May 2021	Dec 2025	Solar
Olmsted Waste Energy	Olmsted County Public Works - (MN)	Rochester, MN	47 GWh	Mar 1987	Dec 2025	Non-biogenic Municipal Solid Waste : 54.7% Biogenic Municipal Solid Waste : 44.8% Natural Gas : 0.5%
Oliver Wind III, LLC	Oliver Wind III, LLC	Mandan, ND	366 GWh	Dec 2016	May 2026	Wind
Olinda Trail Solar	Olinda Trail Solar LLC	Lindstrom, MN	2 GWh	Aug 2019	Dec 2025	Solar
Old Gold Energy Center, LLC	Old Gold Energy Center, LLC	Joice, IA	57 GWh	Sep 2001	Dec 2025	Wind
Ogema	Greenbacker Renewable Energy Corporation	Ogema, WI	2 GWh	Feb 2024	Dec 2025	Solar
Ogden	City of Ogden - (IA)	Ogden, IA	73 MWh	Jun 1951	Dec 2025	Distillate Fuel Oil
OE IL Solar 3	OE IL Solar 3, LLC	Oregon, IL	4 GWh	Feb 2022	Dec 2025	Solar
Odin Wind Farm LLC	Aspenall Energies (Delaware), LLC	Mountainlake, MN	32 GWh	Apr 2008	Dec 2025	Wind
Odell Wind Farm	Algonquin Power Co	Mountain Lake, MN	769 GWh	Jun 2016	Dec 2025	Wind
Oconto Falls Upper	Eagle Creek Renewable Energy, LLC	Oconto Falls, WI	12 GWh	Dec 1917	Dec 2025	Water
Oconto Falls Lower	Eagle Creek Renewable Energy, LLC	Oconto Falls, WI	6 GWh	Dec 1970	Dec 2025	Water
Oakdale	Northern Indiana Pub Serv Co	Monticello, IN	15 GWh	Oct 1925	Feb 2025	Water
Oak Ridge Solar	AES Clean Energy	Oak Ridge, LA	413 GWh	Nov 2023	May 2026	Solar
Oak Ridge LFGTE	Wabash Valley Power Assn, Inc	Logansport, IN	23 GWh	Nov 2003	Dec 2025	Landfill Gas
Oak Point Cogen	Chevron Oronite Co LLC	Belle Chasse, LA	98 GWh	Sep 1999	Dec 2025	Natural Gas
Oak Hill Solar Array	Southern Indiana Gas & Elec Co	Evansville, IN	3 GWh	Oct 2018	Dec 2025	Solar
Oak Glen Wind Farm	Minnesota Municipal Power Agny	Blooming Prairie, MN	102 GWh	Oct 2011	Dec 2025	Wind
O'Shea Solar Farm	DTE Electric Company	Detroit, MI	3 GWh	Jun 2017	Dec 2025	Solar
O'Fallon Renewable Energy Center	Union Electric Co - (MO)	O'Fallon, MO	1 GWh	Nov 2014	Aug 2025	Solar
O'Brien Wind	MidAmerican Energy Co	Primghar, IA	851 GWh	Aug 2016	Dec 2025	Wind
O'Brien Solar Fields	Madison Gas & Electric Co	Fitchburg, WI	37 GWh	Apr 2021	Dec 2025	Solar
Novel Winegar Partnership Solar CSG	REA Investments, LLC	Waseca, MN	2 GWh	Mar 2021	Dec 2025	Solar
Novel Wayne Solar LLC CSG	REA Investments, LLC	Mantorville, MN	2 GWh	Dec 2020	Dec 2025	Solar
Novel Swenson Solar LLC CSG	Novel Swenson Solar HQ LLC	North Branch, MN	922 MWh	Apr 2025	Dec 2025	Solar
Novel Sunnyfield Farms Solar LLC CSG	REA Investments, LLC	Mazeppa, MN	2 GWh	May 2022	Dec 2025	Solar
Novel Stumpf 1 Solar CSG	Novel Stumpf 1 Solar LLC	Red Wing, MN	60 MWh	Nov 2025	Dec 2025	Solar
Novel Stein Solar LLC CSG	REA Investments, LLC	Taylors Falls, MN	2 GWh	Aug 2022	Dec 2025	Solar
Novel Stavem Solar LLC CSG	REA Investments, LLC	Glenwood, MN	2 GWh	Aug 2021	Dec 2025	Solar
Novel Shelly Solar LLC (CSG)	REA Investments, LLC	Cottonwood, MN	2 GWh	Aug 2022	Dec 2025	Solar
Novel Schroeder Solar LLC CSG	REA Investments, LLC	Renville, MN	2 GWh	Dec 2022	Dec 2025	Solar
Novel Schmoll Farms Solar CSG	REA Investments, LLC	Dodge Center, MN	1 GWh	Oct 2020	Dec 2025	Solar
Novel Reber Solar CSG	REA Investments, LLC	Albany, MN	2 GWh	Oct 2019	Dec 2025	Solar
Novel Peter Solar CSG	REA Investments, LLC	Waterville, MN	2 GWh	Aug 2021	Dec 2025	Solar
Novel Pederson Solar CSG	REA Investments, LLC	Sauk Rapids, MN	2 GWh	Jul 2020	Dec 2025	Solar
Novel OYA of Osakis CSG	NRG MN Community LLC	Osakis, MN	9 GWh	Jun 2018	Dec 2025	Solar
Novel - OYA of Mapleton CSG	NRG MN Community LLC	Mapleton, MN	6 GWh	Jun 2018	Dec 2025	Solar
Novel Novak Solar LLC CSG	REA Investments, LLC	Foley, MN	1 GWh	Jul 2021	Dec 2025	Solar
Novel MNDot Solar CSG	REA Investments, LLC	Afton, MN	2 GWh	Oct 2020	Dec 2025	Solar
Novel Milbradt Solar LLC	Novel Milbradt Solar HQ LLC	Belview, MN	2 GWh	Nov 2024	Dec 2025	Solar
Novel Martin Solar One LLC (McLeod) CSG	REA Investments, LLC	Lester Prairie, MN	2 GWh	Jul 2019	Dec 2025	Solar
Novel Martens Solar LLC(CSG)	REA Investments, LLC	Lafayette, MN	2 GWh	Feb 2022	Dec 2025	Solar
Novel Kanewischer Solar CSG	REA Investments, LLC	Waseca, MN	2 GWh	Sep 2020	Dec 2025	Solar
Novel Jewison Solar CSG	REA Investments, LLC	Janesville, MN	1 GWh	Sep 2020	Dec 2025	Solar
Novel Huneke Solar LLC CSG	REA Investments, LLC	Zumbrota, MN	2 GWh	Aug 2021	Dec 2025	Solar
Novel Historical Society Solar CSG	REA Investments, LLC	Sacred Heart, MN	2 GWh	Oct 2019	Dec 2025	Solar
Novel Herickhoff Solar CSG	REA Investments, LLC	Osakis, MN	2 GWh	Mar 2020	Dec 2025	Solar
Novel Herber Solar CSG	REA Investments, LLC	Rollingstone, MN	2 GWh	Jan 2020	Dec 2025	Solar
Novel Handeland Solar LLC (CSG)	REA Investments, LLC	Clarkfield, MN	2 GWh	May 2022	Dec 2025	Solar
Novel Haley Solar CSG	REA Investments, LLC	Waseca, MN	2 GWh	May 2020	Dec 2025	Solar
Novel Froehle Solar LLC	Novel Froehle Solar HQ LLC	Cold Spring, MN	2 GWh	Nov 2024	Dec 2025	Solar
Novel Denzer Solar LLC CSG	REA Investments, LLC	Minnesota City, MN	2 GWh	Jun 2022	Dec 2025	Solar
Novel DeCook Solar CSG	REA Investments, LLC	Byron, MN	2 GWh	Feb 2020	Dec 2025	Solar
Novel Debra Solar LLC CSG	REA Investments, LLC	Mantorville, MN	2 GWh	Nov 2020	Dec 2025	Solar
Novel David Solar LLC CSG	REA Investments, LLC	Waseca, MN	2 GWh	Feb 2022	Dec 2025	Solar
Novel Caroline Solar, LLC CSG	REA Investments, LLC	North Branch, MN	2 GWh	Apr 2023	Dec 2025	Solar
Novel Byron Solar CSG	REA Investments, LLC	Byron, MN	2 GWh	Apr 2020	Dec 2025	Solar
Novel Brooten Solar CSG	REA Investments, LLC	Brooten, MN	2 GWh	Sep 2019	Dec 2025	Solar
Novel Brock Solar LLC CSG	Novel Brock Solar HQ LLC	Clarkfield, MN	54 MWh	Nov 2025	Dec 2025	Solar
Novel Benedix Solar CSG	REA Investments, LLC	Mantorville, MN	2 GWh	Nov 2020	Dec 2025	Solar
Novel Bartel Solar CSG	REA Investments, LLC	Byron, MN	2 GWh	Mar 2020	Dec 2025	Solar
Norway Point Hydropower Project	Eagle Creek Renewable Energy, LLC	Alpena, MI	13 GWh	Aug 1990	Dec 2025	Water
Norway (MI)	City of Norway - (MI)	Norway, MI	30 GWh	May 1905	Dec 2025	Water
Norway (IN)	Northern Indiana Pub Serv Co	Monticello, IN	12 GWh	May 1923	Dec 2025	Water
Northfield Solar CSG	Altus Power America Management, LLC	Northfield, MN	9 GWh	Jun 2020	Dec 2025	Solar
Northfield Holdco CSG	Northfield Holdco LLC	Northfield, MN	8 GWh	Nov 2017	Dec 2025	Solar
Northfield Community Solar	Northfield Community Solar	Northfield, MN	8 GWh	Nov 2016	Dec 2025	Solar
Northern Wind	Northern States Power Co - Minnesota	Lake Wilson, MN	343 GWh	Dec 2022	May 2026	Wind
Northern Lights Wind LLC	Northern Lights Wind LLC (Longroad)	Pipestone, MN	2 GWh	Nov 2004	Dec 2025	Wind
Northern Iowa Windpower II	Avangrid Power LLC	Kensett, IA	134 GWh	Dec 2007	Dec 2025	Wind
Northern Cardinal Solar SCS IL 1, LLC	Arevon Energy, Inc.	Champaign, IL	19 GWh	Jan 2021	Dec 2025	Solar
Northeast (MI)	DTE Electric Company	Warren, MI	15 GWh	Apr 1966	Dec 2025	Natural Gas : 86.8% Distillate Fuel Oil : 13.2%
North Star Solar Project	North Star Solar PV LLC	North Branch, MN	175 GWh	Nov 2016	May 2026	Solar
North Rock	Wisconsin Power & Light Co	Edgerton, WI	93 GWh	Sep 2022	May 2026	Solar
North Generation Plant	City of Greenfield - (IA)	Greenfield, IA	11 MWh	Dec 2001	Dec 2025	Distillate Fuel Oil
North English	MidAmerican Energy Co	Montezuma, IA	1 TWh	Nov 2018	May 2026	Wind
North Branch (MN)	North Branch Water & Light Comm	North Branch, MN	249 MWh	Sep 2003	Dec 2025	Distillate Fuel Oil
North Arkansas Electric Cooperative	Today's Power, Inc.	Salem, AR	2 GWh	Apr 2021	Dec 2025	Solar
Nortera Customer Hosted Solar	Wisconsin Power & Light Co	Fairwater, WI	307 MWh	Jul 2025	Dec 2025	Solar
Noblesville	Duke Energy Indiana, LLC	Noblesville, IN	2 TWh	Aug 1950	Dec 2025	Natural Gas
Nobles Wind Project	Northern States Power Co - Minnesota	Reading, MN	789 GWh	Nov 2010	May 2026	Wind

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