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	Oct 2026
Annual Generation	677.7 TWh
Power Plants	3,095
Utilities	1,372
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 \| 37.1% Coal \| 26.2% Wind \| 15% Nuclear \| 13.8% Solar \| 6.1% Water \| 1.4% Other Fuel \| 0.5%

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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
Prairie Island	Northern States Power Co - Minnesota	Welch, MN	9 TWh	Jan 1974	Jul 2026	Nuclear
Prairie Du Sac	Wisconsin Power & Light Co	Prairie du Sac, WI	153 GWh	Sep 1915	Dec 2025	Water
Prairie Creek Solar	Sol Systems	Jacksonville, IL	59 GWh	Oct 2023	Jul 2026	Solar
Prairie Creek	Interstate Power and Light Co	Cedar Rapids, IA	52 GWh	Sep 1958	Jul 2026	Subbituminous Coal : 59.8% Natural Gas : 40.2%
PPG Riverside	Westlake 2 US LLC	Lake Charles, LA	127 GWh	Aug 1947	Jul 2026	Purchased Steam
PPG Powerhouse C	Westlake 2 US LLC	Lake Charles, LA	1 TWh	Jul 1977	Jul 2026	Natural Gas : 99.9%
PPG Plant C Caustic	Westlake 2 US LLC	Lake Charles, LA	14 GWh	Sep 1986	Dec 2025	Natural Gas
Potato Rapids	Wisconsin Public Service Corp	Town of Porterfield, WI	4 GWh	Apr 1921	Dec 2025	Water
Posey Solar	Southern Indiana Gas & Elec Co	Mount Vernon, IN	405 GWh	Apr 2025	Jul 2026	Solar
Portside Energy	Primary Energy Recycling Holdings, LLC	Portage, IN	262 GWh	Aug 1997	Dec 2025	Natural Gas
Porter Way Community Solar Garden	Onsite Partners, LLC	Waconia, MN	5 GWh	Jan 2018	Jul 2026	Solar
Portage Solar Plant	Portage Solar Plant	Portage, WI	21 GWh	May 2023	Dec 2025	Solar
Portage Solar	Ecos Energy LLC	Valparaiso, IN	2 GWh	Oct 2012	Dec 2025	Solar
Port Washington Generating Station	Wisconsin Electric Power Co	Port Washington, WI	7 TWh	Jun 2005	Jul 2026	Natural Gas
Port Edwards Mill	Domtar Industries Inc	Port Edwards, WI	37 GWh	Dec 1912	Jul 2026	Water
Port Arthur Texas Refinery	Total Petrochemicals USA Inc	Port Arthur, TX	248 GWh	Jul 1988	Dec 2025	Natural Gas : 71.8% Other Gas : 28.2%
Port Allen (LA)	Placid Refining Co LLC	Port Allen, LA	50 GWh	Apr 1990	Dec 2025	Natural Gas
Popple Creek (Clark 1)	Greenbacker Renewable Energy Corporation	Colby, WI	4 GWh	Jan 2024	Dec 2025	Solar
PopeSun CSG, LLC	SunStrong Management, LLC	Starbuck, MN	6 GWh	Nov 2017	Dec 2025	Solar
Pomeroy Wind Farm	MidAmerican Energy Co	Fonda, IA	961 GWh	Nov 2007	Jul 2026	Wind
Polaris Wind Park	DTE Electric Company	North Star Township, MI	458 GWh	Apr 2020	Jul 2026	Wind
Polaris Solar Park	DTE Electric Company	Ashley, MI	148 GWh	Jun 2025	Jul 2026	Solar
Point Beach Solar	Point Beach Solar	Two Creeks, WI	199 GWh	Aug 2021	Jul 2026	Solar
Point Beach Nuclear Plant	NextEra Energy Point Beach LLC	Two Rivers, WI	10 TWh	May 1969	Jul 2026	Nuclear
POET Biorefining - Shelbyville	POET Biorefining- Shelbyville	Shelbyville, IN	34 GWh	May 2020	Dec 2025	Natural Gas
POET Biorefining - North Manchester, LLC	POET Biorefining - North Manchester, LLC	North Manchester, IN	17 GWh	May 2017	Dec 2025	Natural Gas
POET Biorefining LLC - Corning	POET Biorefining LLC - Corning	Corning, IA	14 GWh	Sep 2018	Dec 2025	Natural Gas
POET Biorefining Lake Crystal	POET Biorefining Lake Crystal	Lake Crystal, MN	7 GWh	Mar 2005	Jul 2026	Natural Gas : 80.4% Distillate Fuel Oil : 19.6%
POET Biorefining - Jewell	POET Biorefining - Jewell	Jewell, IA	11 GWh	Feb 2019	Dec 2025	Natural Gas
POET Biorefining - Hudson	POET Biorefining - Hudson	Hudson, SD	11 GWh	Apr 2019	Dec 2025	Natural Gas
POET Biorefining-Hanlontown, LLC	POET Biorefining-Hanlontown, LLC	Hanlontown, IA	13 GWh	Dec 2018	Dec 2025	Natural Gas
POET Biorefining - Gowrie	POET Biorefining - Gowrie	Gowrie, IA	2 GWh	Oct 2018	Dec 2025	Natural Gas
POET Biorefining - Chancellor	POET Biorefining- Chancellor	Chancellor, SD	28 GWh	Jul 2018	Dec 2025	Wood/Wood Waste Solids : 70.4% Natural Gas : 25.9% Landfill Gas : 3.8%
POET Biorefining Caro, LLC	POET Biorefining Caro, LLC	Caro, MI	13 GWh	May 2018	Dec 2025	Natural Gas
Poet Bioprocessing Emmetsburg	Poet Bioprocessing Emmetsburg	Emmetsburg, IA	18 GWh	Nov 2023	Dec 2025	Natural Gas : 84.7% Other Biomass Solids : 15.3%
Pocahontas Prairie Wind Farm	MidAmerican Energy Co	Pomeroy, IA	374 GWh	Jan 2012	Dec 2025	Wind
Plymouth Wind	MidAmerican Energy Co	Remsen, IA	759 GWh	Dec 2021	Jul 2026	Wind
Plum Point Energy Station	NRG Energy Services - Plum Point	Osceola, AR	3 TWh	Aug 2010	Jul 2026	Subbituminous Coal : 99.7%
Pleasantville Solar Park	Pleasantville Solar Park LLC	Ipava, IL	259 GWh	Oct 2025	Jul 2026	Solar
Pleasant Valley Wind Farm	Northern States Power Co - Minnesota	Dexter, MN	464 GWh	Jul 2015	Dec 2025	Wind
Pleasant Valley (MN)	Great River Energy	Dexter, MN	157 GWh	Apr 2001	Dec 2025	Natural Gas : 99.2% Distillate Fuel Oil : 0.8%
Pleasant Hill	MidAmerican Energy Co	Pleasant Hill, IA	49 GWh	May 1990	Dec 2025	Natural Gas
Pleasant Creek Unit 2	Interstate Power and Light Co	Palo, IA	273 GWh	Nov 2024	Jul 2026	Solar
Pleasant Creek Unit 1	Interstate Power and Light Co	Palo, IA	98 GWh	Feb 2024	Jul 2026	Solar
Platt Solar	Cannon River LLC	Hadley, MN	2 GWh	Dec 2022	Dec 2025	Solar
Plato CSG1, LLC	Nautilus Solar Solutions	Glencoe, MN	2 GWh	Dec 2020	Dec 2025	Solar
Plaquemine Cogeneration Plant	Dow Chemical Co	Plaquemine, LA	6 TWh	Feb 2004	Jul 2026	Natural Gas : 97.3% Other Gas : 2.7%
Plant 31 Paper Mill	Graphic Packaging International	West Monroe, LA	515 GWh	Dec 1963	Dec 2025	Natural Gas : 62.4% Black Liquor : 25.3% Wood/Wood Waste Solids : 12.3%
Placid 12	DTE Electric Company	Clarkston, MI	243 MWh	Oct 1970	Dec 2025	Distillate Fuel Oil
Pivot Energy Minnesota Solar 10	Pivot Energy	Greenwald, MN	1 GWh	May 2023	Dec 2025	Solar
Pivot Energy Minnesota Solar 1	Pivot Energy	Clinton Falls, MN	2 GWh	May 2023	Dec 2025	Solar
Pipestone City Solar LLC CSG	REA Investments, LLC	Pipestone, MN	2 GWh	Jul 2021	Dec 2025	Solar
Pioneer Trail Wind Farm, LLC	RWE Clean Energy	Paxton, IL	470 GWh	Nov 2011	Dec 2025	Wind
Pioneer Prairie Wind Farm	Pioneer Prairie Wind Farm I, LLC	McIntire, IA	838 GWh	Sep 2008	Jul 2026	Wind
Pine Tree Acres WM LFGTE	WM Renewable Energy LLC	Lenox, MI	88 GWh	Feb 2012	Jul 2026	Landfill Gas
Pine Tree Acres	NextEra Renewable Fuels, LLC	Lenox Twp, MI	56 GWh	May 1998	Jul 2026	Landfill Gas
Pine Street	Village of Sebewaing - (MI)	Sebewaing, MI	462 MWh	May 1969	Dec 2025	Natural Gas
Pine River Wind Park	DTE Electric Company	Shepherd, MI	382 GWh	Feb 2019	Jul 2026	Wind
Pine River Solar Park	DTE Electric Company	Alma, MI	128 GWh	May 2025	Jul 2026	Solar
Pine Island Solar CSG	Pine Island Holdco, LLC	Pine Island, MN	6 GWh	Jan 2017	Dec 2025	Solar
Pine Island Solar	Enel Green Power NA, Inc.	Pine Island, MN	8 GWh	Nov 2016	Dec 2025	Solar
Pine Bluff Energy Center	Pine Bluff Energy LLC	Pine Bluff, AR	1 TWh	Jul 2001	Jul 2026	Natural Gas
Pine	Wisconsin Electric Power Co	Florence, WI	11 GWh	May 1922	Dec 2025	Water
Pinconning White Feather	Energy Developments, Inc d/b/a EDL	Pinconning, MI	16 GWh	Feb 2009	Dec 2025	Landfill Gas
Pinckneyville	Union Electric Co - (MO)	Pinckneyville, IL	67 GWh	May 2000	Nov 2025	Natural Gas
Pillager	ALLETE, Inc.	Pillager, MN	7 GWh	Dec 1916	Dec 2025	Water
Pike County Wind Power	Illinois Rural Electric Coop	Pittsfield, IL	334 MWh	Apr 2005	Jun 2025	Wind
Pierre Solar	Western Minnesota Mun Pwr Agny	Pierre, SD	2 GWh	Aug 2016	Dec 2025	Solar
Pickford Solar	Heritage Sustainable Energy. LLC	Pickford, MI	9 GWh	Jan 2021	Dec 2025	Solar
Phoenix Solar South Farms LLC Solar Farm	Phoenix Solar South Farms LLC	Champaign, IL	5 GWh	Nov 2015	Jul 2026	Solar
Pheasant Run Wind LLC	Pheasant Run Wind LLC	Pigeon, MI	245 GWh	Nov 2013	Jul 2026	Wind
Pheasant Run Landfill Gas Recovery	WM Renewable Energy LLC	Bristol, WI	47 GWh	Jan 1992	Dec 2025	Landfill Gas
Petit Jean	Today's Power, Inc.	Clinton, AR	2 GWh	Nov 2023	Dec 2025	Solar
Petersburg Energy Center	Petersburg Energy Center, LLC	Petersburg, IN	220 GWh	-	Jul 2026	Solar
Petenwell	Wisconsin River Power Company	Necedah, WI	97 GWh	Jul 1949	Dec 2025	Water
Peru (IN)	City of Peru - (IN)	Peru, IN	6 MWh	May 1949	Dec 2024	Distillate Fuel Oil
Peru 3	Indiana Municipal Power Agency	Peru, IN	5 GWh	Sep 2022	Dec 2025	Solar
Peru 2	Indiana Municipal Power Agency	Peru, IN	17 GWh	Mar 2021	Dec 2025	Solar
Perryville Power Station	Entergy Louisiana LLC	Sterlington, LA	4 TWh	May 2001	Jul 2026	Natural Gas
Perry Customer Hosted 1MW Solar Project	Interstate Power and Light Co	Perry, IA	2 GWh	Jun 2024	Dec 2025	Solar
Pepin Garden	Pepin Garden LLC	Kellogg, MN	2 GWh	Oct 2023	Dec 2025	Solar
Peoria Solar 3	Pivot Energy	Dunlap, IL	219 MWh	Nov 2025	Dec 2025	Solar
Peoria County IL S2	SolAmerica Energy, LLC	Peoria, IL	2 GWh	May 2025	Dec 2025	Solar
Peoples Generating Station	Sagepoint Energy	Ann Arbor, MI	25 GWh	Aug 1995	Dec 2025	Landfill Gas
Peno Creek	Union Electric Co - (MO)	Bowling Green, MO	156 GWh	Apr 2002	Dec 2025	Natural Gas : 99.3% Distillate Fuel Oil : 0.7%
Pella Peaking	City of Pella - (IA)	Pella, IA	752 MWh	May 2003	Dec 2025	Distillate Fuel Oil
Pegasus Wind	Pegasus Wind, LLC	Reese, MI	376 GWh	Nov 2019	Jul 2026	Wind
Pegasus Community Solar	Pegasus Community Solar	Brooten, MN	3 GWh	Jul 2017	Dec 2025	Solar
Peavy Falls	Wisconsin Electric Power Co	Crystal Falls, MI	48 GWh	Dec 1942	Dec 2025	Water
Pearl Station	Prairie Power, Inc	Pearl, IL	64 MWh	May 1973	Dec 2025	Distillate Fuel Oil
Pearl River Solar Park LLC	Pearl River Solar Park, LLC	Morton, MS	423 GWh	Jun 2024	Jul 2026	Solar
PCA, Filer City Mill	PCA, Filer City Mill	Filer City, MI	94 GWh	Dec 1949	Jul 2026	Natural Gas
Paynesville Solar	Enel Green Power NA, Inc.	Paynesville, MN	18 GWh	Nov 2016	Dec 2025	Solar
Paynesville CSG1, LLC	Nautilus Solar Solutions	Paynesville, MN	2 GWh	Dec 2020	Dec 2025	Solar
Paynesville Community Solar	Paynesville Community Solar	Paynesville, MN	8 GWh	Nov 2016	Dec 2025	Solar
Paulson Community (CSG)	CleanCapital Holdings	St. Peter, MN	2 GWh	Mar 2020	Dec 2025	Solar
Pastime Farm, LLC	Cypress Creek Renewables	Brazil, IN	9 GWh	Nov 2015	Dec 2025	Solar
Park Mill	Eagle Creek Renewable Energy, LLC	Marinette, WI	4 GWh	Dec 1919	Dec 2025	Water
Paris (WI)	Wisconsin Electric Power Co	Union Grove, WI	215 GWh	Feb 1995	Dec 2025	Natural Gas
Paris Solar	Wisconsin Electric Power Co	Union Grove, WI	294 GWh	Nov 2024	Jul 2026	Solar

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#61	Alcoa Power Generating, Inc. - Yadkin Division	433.0 GWh	4
#26	Associated Electric Cooperative, Inc.	22.9 TWh	47
#13	Duke Energy Carolinas	113.4 TWh	578
#50	Duke Energy Progress West	4.6 TWh	15
#23	Louisville Gas and Electric Company and Kentucky Utilities Company	34.2 TWh	25
#1	PJM Interconnection, LLC	890.9 TWh	2,806
#6	Southern Company Services, Inc. - Trans	259.3 TWh	423
#5	Southwest Power Pool	314.5 TWh	876
#53	Southwestern Power Administration	3.5 TWh	37
#9	Tennessee Valley Authority	166.2 TWh	209

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#1	PJM Interconnection, LLC	890.9 TWh	2,806
#2	Midcontinent Independent System Operator, Inc.	677.7 TWh	3,095
#3	Electric Reliability Council of Texas, Inc.	506.3 TWh	1,487
#5	Southwest Power Pool	314.5 TWh	876
#6	Southern Company Services, Inc. - Trans	259.3 TWh	423
#7	California Independent System Operator	168.7 TWh	2,170
#9	Tennessee Valley Authority	166.2 TWh	209
#10	Florida Power & Light Co.	153.0 TWh	188
#12	New York Independent System Operator	134.1 TWh	1,334
#13	Duke Energy Carolinas	113.4 TWh	578