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
Peno Creek	Union Electric Co - (MO)	Bowling Green, MO	118 GWh	Apr 2002	Dec 2024	Natural Gas : 97.4% Distillate Fuel Oil : 2.6%
Peoples Generating Station	North American Natural Res	Ann Arbor, MI	17 GWh	Aug 1995	Dec 2023	Landfill Gas
Pepin Garden	Pepin Garden LLC	Kellogg, MN	2 GWh	Oct 2023	Dec 2024	Solar
Perry Customer Hosted 1MW Solar Project	Interstate Power and Light Co	Perry, IA	739 MWh	Jun 2024	Dec 2024	Solar
Perryville Power Station	Entergy Louisiana LLC	Sterlington, LA	4 TWh	May 2001	Sep 2025	Natural Gas
Peru 2	Indiana Municipal Power Agency	Peru, IN	18 GWh	Mar 2021	Dec 2024	Solar
Peru 3	Indiana Municipal Power Agency	Peru, IN	5 GWh	Sep 2022	Dec 2024	Solar
Peru (IN)	City of Peru - (IN)	Peru, IN	6 MWh	May 1949	Dec 2024	Distillate Fuel Oil
Petenwell	Wisconsin River Power Company	Necedah, WI	108 GWh	Jul 1949	Dec 2024	Water
Petit Jean	Today's Power, Inc.	Clinton, AR	2 GWh	Nov 2023	Dec 2024	Solar
Pheasant Run Landfill Gas Recovery	WM Renewable Energy LLC	Bristol, WI	48 GWh	Jan 1992	Dec 2024	Landfill Gas
Pheasant Run Wind LLC	Pheasant Run Wind LLC	Pigeon, MI	257 GWh	Nov 2013	Sep 2025	Wind
Phoenix Solar South Farms LLC Solar Farm	Phoenix Solar South Farms LLC	Champaign, IL	7 GWh	Nov 2015	Sep 2025	Solar
Pickford Solar	Heritage Sustainable Energy. LLC	Pickford, MI	10 GWh	Jan 2021	Dec 2024	Solar
Pierre Solar	Pierre Solar	Pierre, SD	2 GWh	Aug 2016	Dec 2024	Solar
Pike County Wind Power	Illinois Rural Electric Coop	Pittsfield, IL	355 MWh	Apr 2005	Nov 2024	Wind
Pillager	ALLETE, Inc.	Pillager, MN	7 GWh	Dec 1916	Dec 2024	Water
Pinckneyville	Union Electric Co - (MO)	Pinckneyville, IL	80 GWh	May 2000	Dec 2024	Natural Gas
Pinconning White Feather	Energy Developments, Inc d/b/a EDL	Pinconning, MI	17 GWh	Feb 2009	Dec 2024	Landfill Gas
Pine	Wisconsin Electric Power Co	Florence, WI	10 GWh	May 1922	Dec 2024	Water
Pine Bluff Energy Center	Pine Bluff Energy LLC	Pine Bluff, AR	827 GWh	Jul 2001	Sep 2025	Natural Gas
Pine Bluff Mill	Suzano Packaging LLC	Pine Bluff, AR	289 GWh	Apr 1958	Dec 2023	Black Liquor : 80.1% Natural Gas : 19.9%
Pine Island Solar	Enel Green Power NA, Inc.	Pine Island, MN	8 GWh	Nov 2016	Dec 2024	Solar
Pine Island Solar CSG	Pine Island Holdco, LLC	Pine Island, MN	6 GWh	Jan 2017	Dec 2024	Solar
Pine River Solar Park	DTE Electric Company	Alma, MI	67 GWh	-	Sep 2025	Solar
Pine River Wind Park	DTE Electric Company	Shepherd, MI	363 GWh	Feb 2019	Sep 2025	Wind
Pine Street	Village of Sebewaing - (MI)	Sebewaing, MI	14 GWh	May 1969	Dec 2024	Natural Gas
Pine Tree Acres	NextEra Renewable Fuels, LLC	Lenox Twp, MI	63 GWh	May 1998	Sep 2025	Landfill Gas
Pine Tree Acres WM LFGTE	WM Renewable Energy LLC	Lenox, MI	79 GWh	Feb 2012	Sep 2025	Landfill Gas
Pioneer Prairie Wind Farm	Pioneer Prairie Wind Farm I, LLC	McIntire, IA	865 GWh	Sep 2008	Sep 2025	Wind
Pioneer Trail Wind Farm, LLC	Big Sky Wind, LLC	Paxton, IL	459 GWh	Nov 2011	Dec 2024	Wind
Pipestone City Solar LLC CSG	REA Investments, LLC	Pipestone, MN	2 GWh	Jul 2021	Dec 2024	Solar
Pivot Energy Minnesota Solar 1	Pivot Energy	Clinton Falls, MN	1 GWh	May 2023	Dec 2024	Solar
Pivot Energy Minnesota Solar 10	Pivot Energy	Greenwald, MN	1 GWh	May 2023	Dec 2024	Solar
Plant 31 Paper Mill	Graphic Packaging International	West Monroe, LA	523 GWh	Dec 1963	Dec 2024	Natural Gas : 63.2% Black Liquor : 25.1% Wood/Wood Waste Solids : 11.7%
Plant Four	City of Marquette - (MI)	Marquette, MI	2 MWh	Apr 1979	Dec 2024	Distillate Fuel Oil
Plaquemine Cogeneration Plant	Dow Chemical Co	Plaquemine, LA	5 TWh	Feb 2004	Sep 2025	Natural Gas : 97.9% Other Gas : 2.1%
Plato CSG1, LLC	Nautilus Solar Solutions	Glencoe, MN	2 GWh	Dec 2020	Dec 2024	Solar
Platt Solar	Cannon River LLC	Hadley, MN	2 GWh	Dec 2022	Dec 2024	Solar
Pleasant Creek Unit 1	Interstate Power and Light Co	Palo, IA	98 GWh	Feb 2024	Sep 2025	Solar
Pleasant Creek Unit 2	Interstate Power and Light Co	Palo, IA	237 GWh	Nov 2024	Sep 2025	Solar
Pleasant Hill	MidAmerican Energy Co	Pleasant Hill, IA	22 GWh	May 1990	Dec 2024	Natural Gas : 99.9%
Pleasant Valley (MN)	Great River Energy	Dexter, MN	86 GWh	Apr 2001	Dec 2024	Natural Gas : 99.3% Distillate Fuel Oil : 0.7%
Pleasant Valley Wind Farm	Northern States Power Co - Minnesota	Dexter, MN	770 GWh	Jul 2015	Dec 2024	Wind
Plum Point Energy Station	NRG Energy Services - Plum Point	Osceola, AR	4 TWh	Aug 2010	Sep 2025	Subbituminous Coal : 99.9%
Plymouth Wind	MidAmerican Energy Co	Remsen, IA	778 GWh	Dec 2021	Sep 2025	Wind
Pocahontas Prairie Wind Farm	MidAmerican Energy Co	Pomeroy, IA	382 GWh	Jan 2012	Dec 2024	Wind
Poet Bioprocessing Emmetsburg	Poet Bioprocessing Emmetsburg	Emmetsburg, IA	18 GWh	Nov 2023	Dec 2024	Natural Gas : 83.1% Other Biomass Solids : 16.9%
POET Biorefining Caro, LLC	POET Biorefining Caro, LLC	Caro, MI	14 GWh	May 2018	Dec 2024	Natural Gas
POET Biorefining - Chancellor	POET Biorefining- Chancellor	Chancellor, SD	28 GWh	Jul 2018	Dec 2024	Wood/Wood Waste Solids : 69.3% Natural Gas : 28.2% Landfill Gas : 2.5%
POET Biorefining - Gowrie	POET Biorefining - Gowrie	Gowrie, IA	21 GWh	Oct 2018	Dec 2024	Natural Gas
POET Biorefining-Hanlontown, LLC	POET Biorefining-Hanlontown, LLC	Hanlontown, IA	12 GWh	Dec 2018	Dec 2024	Natural Gas
POET Biorefining - Hudson	POET Biorefining - Hudson	Hudson, SD	17 GWh	Apr 2019	Dec 2024	Natural Gas
POET Biorefining - Jewell	POET Biorefining - Jewell	Jewell, IA	22 GWh	Feb 2019	Dec 2024	Natural Gas
POET Biorefining Lake Crystal	POET Biorefining Lake Crystal	Lake Crystal, MN	7 GWh	Mar 2005	Sep 2025	Natural Gas : 83.8% Distillate Fuel Oil : 16.2%
POET Biorefining LLC - Corning	POET Biorefining LLC - Corning	Corning, IA	14 GWh	Sep 2018	Dec 2024	Natural Gas
POET Biorefining - North Manchester, LLC	POET Biorefining - North Manchester, LLC	North Manchester, IN	17 GWh	May 2017	Dec 2024	Natural Gas
POET Biorefining - Shelbyville	POET Biorefing- Shelbyville	Shelbyville, IN	35 GWh	May 2020	Dec 2024	Natural Gas
Point Beach Nuclear Plant	NextEra Energy Point Beach LLC	Two Rivers, WI	10 TWh	May 1969	Sep 2025	Nuclear
Point Beach Solar	Point Beach Solar	Two Creeks, WI	204 GWh	Aug 2021	Sep 2025	Solar
Polaris Solar Park	DTE Electric Company	Ashley, MI	46 GWh	-	Sep 2025	Solar
Polaris Wind Park	DTE Electric Company	North Star Township, MI	452 GWh	Apr 2020	Sep 2025	Wind
Pomeroy Wind Farm	MidAmerican Energy Co	Fonda, IA	972 GWh	Nov 2007	Sep 2025	Wind
PopeSun CSG, LLC	Cypress Creek Renewables	Starbuck, MN	8 GWh	Nov 2017	Dec 2024	Solar
Popple Creek (Clark 1)	Greenbacker Renewable Energy Corporation	Colby, WI	4 GWh	Jan 2024	Dec 2024	Solar
Port Allen (LA)	Placid Refining Co LLC	Port Allen, LA	43 GWh	Apr 1990	Dec 2024	Natural Gas
Port Arthur Texas Refinery	Total Petrochemicals USA Inc	Port Arthur, TX	226 GWh	Jul 1988	Dec 2024	Natural Gas : 75.0% Other Gas : 25.0%
Port Edwards Mill	Domtar Industries Inc	Port Edwards, WI	39 GWh	Dec 1912	Sep 2025	Water
Port Washington Generating Station	Wisconsin Electric Power Co	Port Washington, WI	7 TWh	Jun 2005	Sep 2025	Natural Gas
Portage Solar	Ecos Energy LLC	Valparaiso, IN	1 GWh	Oct 2012	Dec 2024	Solar
Portage Solar Plant	Portage Solar Plant	Portage, WI	23 GWh	May 2023	Dec 2024	Solar
Porter Way Community Solar Garden	AEP Onsite Partners, LLC	Waconia, MN	5 GWh	Jan 2018	Sep 2025	Solar
Portside Energy	Primary Energy Recycling Holdings, LLC	Portage, IN	256 GWh	Aug 1997	Dec 2024	Natural Gas
Posey Solar	Southern Indiana Gas & Elec Co	Mount Vernon, IN	207 GWh	-	Sep 2025	Solar
Potato Rapids	Wisconsin Public Service Corp	Town of Porterfield, WI	4 GWh	Apr 1921	Dec 2024	Water
PPG Plant C Caustic	Westlake 2 US LLC	Lake Charles, LA	14 GWh	Sep 1986	Dec 2024	Natural Gas
PPG Powerhouse C	Westlake 2 US LLC	Lake Charles, LA	2 TWh	Jul 1977	Sep 2025	Natural Gas : 99.5%
PPG Riverside	Westlake 2 US LLC	Lake Charles, LA	59 GWh	Aug 1947	Jul 2025	Purchased Steam
Prairie Creek	Interstate Power and Light Co	Cedar Rapids, IA	86 GWh	Sep 1958	Sep 2025	Subbituminous Coal : 64.8% Natural Gas : 35.2%
Prairie Creek Solar	Sol Systems	Jacksonville, IL	60 GWh	Oct 2023	Sep 2025	Solar
Prairie Du Sac	Wisconsin Power & Light Co	Prairie du Sac, WI	144 GWh	Sep 1915	Dec 2024	Water
Prairie Island	Northern States Power Co - Minnesota	Welch, MN	8 TWh	Jan 1974	Sep 2025	Nuclear
Prairie Mist Solar	Prairie Mist Solar Project, LLC	Montrose, AR	225 GWh	Aug 2024	Sep 2025	Solar
Prairie River	ALLETE, Inc.	Grand Rapids, MN	2 GWh	Mar 1920	Dec 2024	Water
Prairie Ronde Solar Farm	Lightsource Renewable Energy Asset Management, LLC	Opelousas, LA	237 GWh	Oct 2024	Sep 2025	Solar
Prairie Rose Wind Farm	Enel Green Power NA, Inc.	Hardwick, MN	414 GWh	Nov 2012	Sep 2025	Wind
Prairie Star Wind Farm	High Prairie Wind Farm II LLC	Grand Meadow, MN	298 GWh	Nov 2007	Dec 2024	Wind
Prairie State Generating Station	Prairie State Generating Co LLC	Marissa, IL	11 TWh	May 2012	Sep 2025	Bituminous Coal : 99.8%
Prairie State Solar Project	Prairie State Solar, LLC	Swanwick Township, IL	231 GWh	Jun 2021	Sep 2025	Solar
Prairie View I & II LFGTE	Wabash Valley Power Assn, Inc	Wyatt, IN	31 GWh	Sep 1994	Dec 2023	Landfill Gas
Prairie Wind Farm	MidAmerican Energy Co	Montezuma, IA	586 GWh	Dec 2017	Sep 2025	Wind
Prairie Wolf Solar LLC	National Grid Renewables	Ashmore Township, IL	383 GWh	Oct 2021	Sep 2025	Solar
Prawer Project CSG	Prawer Community Solar LLC	Clear Lake, MN	2 GWh	Dec 2019	Dec 2024	Solar
Prescott Wind Farm	Prescott Wind Energy LLC	Prescott, IA	144 GWh	Aug 2024	Sep 2025	Wind
Preston Garden (CSG)	Preston Garden LLC	Franklin, MN	785 MWh	Jul 2024	Dec 2024	Solar
Preston (IA)	City of Preston	Preston, IA	9 MWh	Nov 1968	Dec 2024	Natural Gas : 89.7% Distillate Fuel Oil : 10.3%
Preston (MN)	Preston Public Utilities Comm	Preston, MN	163 MWh	Dec 1948	Dec 2024	Distillate Fuel Oil : 62.3% Natural Gas : 37.7%
Prickett	Upper Peninsula Power Company	Pelkie, MI	7 GWh	Oct 1931	Dec 2024	Water
Primient	Primary Products Ingredients Americas, LLC d/b/a Primient	Lafayette, IN	406 GWh	May 2021	Dec 2024	Natural Gas
Primient Decatur Plant Cogen	Primary Products Ingredients Americas, LLC	Decatur, IL	254 GWh	Dec 1988	Dec 2024	Natural Gas

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