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 State Generating Station	Prairie State Generating Co LLC	Marissa, IL	12 TWh	May 2012	Jul 2026	Bituminous Coal : 99.8%
Prairie State Solar Project	Prairie State Solar, LLC	Swanwick Township, IL	221 GWh	Jun 2021	Jul 2026	Solar
Prairie Wind Farm	MidAmerican Energy Co	Montezuma, IA	606 GWh	Dec 2017	Jul 2026	Wind
Prairie Wolf Solar LLC	Geronimo Power	North Ashmore, IL	378 GWh	Oct 2021	Jul 2026	Solar
Prawer Project CSG	Prawer Community Solar LLC	Clear Lake, MN	2 GWh	Dec 2019	Dec 2025	Solar
Prescott Wind Farm	Prescott Wind Energy LLC	Prescott, IA	168 GWh	Aug 2024	Jul 2026	Wind
Preston Garden (CSG)	Preston Garden LLC	Franklin, MN	2 GWh	Jul 2024	Dec 2025	Solar
Preston (IA)	City of Preston - (IA)	Preston, IA	9 MWh	Nov 1968	Dec 2025	Natural Gas : 85.1% Distillate Fuel Oil : 14.9%
Preston (MN)	Preston Public Utilities Comm	Preston, MN	78 MWh	Dec 1948	Dec 2025	Distillate Fuel Oil : 71.9% Natural Gas : 28.1%
Prickett	Upper Peninsula Power Company	Pelkie, MI	6 GWh	Oct 1931	Dec 2025	Water
Primient	Primary Products Ingredients Americas, LLC d/b/a Primient	Lafayette, IN	408 GWh	May 2021	Dec 2025	Natural Gas
Primient Decatur Plant Cogen	Primary Products Ingredients Americas, LLC	Decatur, IL	150 GWh	Dec 1988	Dec 2025	Natural Gas
Primrose Solar, LLC	Geronimo Power	Mankato, MN	2 GWh	Mar 2021	Dec 2025	Solar
Princeton (IL)	City of Princeton - (IL)	Princeton, IL	813 MWh	Jun 1953	Dec 2025	Natural Gas : 99.8%
Princeton (MN)	Princeton Public Utils Comm	Princeton, MN	108 MWh	Aug 1953	Dec 2025	Distillate Fuel Oil
Princeton Solar	Altorfer Inc.	Princeton, IL	904 MWh	Feb 2025	Dec 2025	Solar
Prosperity Wind	Prosperity Wind, LLC	Deland, IL	947 GWh	Dec 2024	Jul 2026	Wind
Pulliam	Wisconsin Public Service Corp	Green Bay, WI	62 GWh	Aug 1949	Jul 2026	Natural Gas
Pullman Solar, LLC	AES Distributed Energy	Lee Township, MI	33 GWh	Nov 2022	Dec 2025	Solar
Purdue CHP	Duke Energy Indiana, LLC	West Lafayette, IN	125 GWh	Feb 2022	Dec 2025	Natural Gas
Purdue University	Purdue University	West Lafayette, IN	129 GWh	Dec 1968	Jul 2026	Natural Gas : 94.3% Bituminous Coal : 5.7%
Putnam (MI)	DTE Electric Company	Mayville, MI	129 MWh	May 1971	Dec 2025	Distillate Fuel Oil
Putnam Solar 1	Pivot Energy	Granville, IL	4 GWh	Apr 2024	Dec 2025	Solar
Putnam Solar 1B	Pivot Energy	Granville, IL	4 GWh	May 2024	Dec 2025	Solar
Quartz Solar, LLC	RWE Clean Energy	Wynne, AR	293 GWh	Feb 2025	Jul 2026	Solar
Quilt Block Wind Farm LLC	Quilt Block Wind Farm LLC	Darlington, WI	369 GWh	Aug 2017	Jul 2026	Wind
R D Green	Big Rivers Electric Corp	Robards, KY	491 GWh	Nov 1979	Jul 2026	Natural Gas
R D Morrow	Cooperative Energy	Purvis, MS	3 TWh	Mar 1978	Jul 2026	Natural Gas
R M Heskett	Montana-Dakota Utilities Co	Mandan, ND	64 GWh	Oct 1954	Jul 2026	Natural Gas
R M Schahfer	Northern Indiana Pub Serv Co	Wheatfield, IN	773 GWh	Nov 1976	Jul 2026	Bituminous Coal : 97.4% Natural Gas : 2.6%
R S Nelson	Entergy Louisiana LLC	Westlake, LA	2 TWh	Jan 1959	Jul 2026	Subbituminous Coal : 99.7%
Rafterville Solar	Rafterville Solar, LLC	Atwater, MN	2 GWh	Jun 2023	Dec 2025	Solar
Ragsdale Solar LLC	Ragsdale Solar, LLC	Canton, MS	239 GWh	Oct 2024	Jul 2026	Solar
Rail Splitter Wind Farm	Rail Splitter Wind Farm LLC	Hopedale, IL	269 GWh	Jul 2009	Dec 2025	Wind
Randolph CSG PV1-5	Ecoplexus, Inc	Randolph, MN	8 GWh	May 2019	Dec 2025	Solar
Rantoul	Village of Rantoul - (IL)	Rantoul, IL	313 MWh	Dec 1950	Jul 2026	Distillate Fuel Oil
Rantoul Solar	Altorfer Inc.	Rantoul, IL	5 MWh	Nov 2016	Dec 2025	Solar
Rapide Croche	City of Kaukauna (WI)	Kaukana, WI	17 GWh	Dec 1925	Dec 2025	Water
Rapids Energy Center	ALLETE, Inc.	Grand Rapids, MN	40 GWh	Dec 1942	Dec 2025	Natural Gas : 81.7% Water : 18.3%
RATTS 1	Ratts 1 Solar LLC	Petersburg, IN	244 GWh	Sep 2025	Jul 2026	Solar
Raymond Solar WI, LLC	Wisconsin Electric Power Co	Franksville, WI	8 GWh	Jan 2025	Dec 2025	Solar
RC Thomas Hydroelectric Project	East Texas Electric Coop, Inc	Livingston, TX	115 GWh	Jun 2020	Jul 2026	Water
Red Barn Energy	Wisconsin Public Service Corp	Montfort, WI	255 GWh	Mar 2023	Jul 2026	Wind
Red Bud	City of Red Bud - (IL)	Red Bud, IL	262 MWh	Feb 1959	Dec 2025	Distillate Fuel Oil
Red Lake Falls Community Hybrid	RWE Clean Energy	Red Lake Falls, MN	15 GWh	Nov 2020	Dec 2025	Wind : 95.1% Solar : 4.9%
Red Maple Solar	Terraform Arcadia	Cleveland, MN	5 GWh	May 2018	Dec 2025	Solar
Red Pine Wind Project	EDF Renewable Asset Holdings, Inc.	Ivanhoe, MN	782 GWh	Nov 2017	Jul 2026	Wind
Red Rock Hydro Plant	Western Minnesota Mun Pwr Agny	Pella, IA	202 GWh	Apr 2021	Jul 2026	Water
Red Wing	Northern States Power Co - Minnesota	Red Wing, MN	127 GWh	Sep 1949	Jul 2026	Non-biogenic Municipal Solid Waste : 53.4% Biogenic Municipal Solid Waste : 43.7% Wood/Wood Waste Solids : 2.3% Natural Gas : 0.6%
Red Wing Community Solar	Terraform Arcadia	Red Wing, MN	7 GWh	Nov 2016	Dec 2025	Solar
Redfield Solar	Redfield PV I, LLC	Sheridan, AR	88 GWh	-	Jul 2026	Solar
Redwood Falls	Redwood Falls Public Util Comm	Redwood Falls, MN	3 GWh	Dec 1969	Dec 2025	Water : 84.0% Natural Gas : 12.5% Distillate Fuel Oil : 3.4%
Redwood Falls Wind	Southern Minnesota Mun P Agny	Redwood Falls, MN	9 GWh	Nov 2004	Dec 2025	Wind
REG Juhl Glenville Wind, LLC	REG Juhl Glenville Wind, LLC	Albert Lea, MN	8 GWh	Nov 2020	Dec 2025	Wind
REG Mason City Solar	REG Mason City, LLC	Mason City, IA	4 GWh	Nov 2024	Dec 2025	Solar
Regal Ware	Wisconsin Electric Power Co	West Bend, WI	3 GWh	Mar 2021	May 2025	Solar
Remmel	Entergy Arkansas LLC	Malvern, AR	46 GWh	Dec 1924	Dec 2025	Water
Renaissance Power Plant	DTE Electric Company	Carson City, MI	1 TWh	Feb 2002	Jul 2026	Natural Gas
Renegade Solar Energy LLC	Upper Michigan Energy Resources Company	Rock, MI	88 GWh	-	Jul 2026	Solar
Renewable Energy Center at BJH	Union Electric Co - (MO)	St Louis, MO	677 MWh	Sep 2019	Apr 2025	Solar
Rengstorf Solar CSG	Geronimo Power	Coutland, MN	9 GWh	Oct 2017	Dec 2025	Solar
Rensselaer Solar Site 2	Indiana Municipal Power Agency	Rensselaer, IN	7 GWh	Nov 2018	Dec 2025	Solar
Reynolds	City of Springfield - (IL)	Springfield, IL	179 MWh	Oct 1970	Dec 2025	Distillate Fuel Oil
Rhinelander Mill	Ahlstrom-Munksjo	Rhinelander, WI	8 GWh	Nov 1917	Jul 2026	Water
Rice Lake II	Onsite Partners, LLC	Rice Lake, WI	5 GWh	Aug 2024	Dec 2025	Solar
Rice Lake Solar Array	Onsite Partners, LLC	Rice Lake, WI	7 GWh	May 2019	Dec 2025	Solar
Richland Center Renewable Energy LLC	Richland Center Renewable Energy LLC	Richland Center, WI	7 GWh	Feb 2013	Dec 2025	Other Biomass Gas
Richland (IA)	Interstate Power and Light Co	Odebolt, IA	492 GWh	Aug 2020	Jul 2026	Wind
Richland Township Solar II, LLC	Birch Creek Power, LLC	Washburn, IL	5 GWh	Aug 2025	Dec 2025	Solar
Richland Township Solar, LLC	Birch Creek Power, LLC	Washburn, IL	80 GWh	Dec 2024	Jul 2026	Solar
Richmond CSG	SoCore Energy LLC	Richmond, MN	9 GWh	Nov 2017	Dec 2025	Solar
Ridge Farm	Ridge Farm Solar 1 LLC	Ridge Farm, IL	4 GWh	Nov 2020	Dec 2025	Solar
Ridgeview	WM Renewable Energy LLC	Whitelaw, WI	37 GWh	Aug 2002	Dec 2025	Landfill Gas
Ridgewind	Ridgewind Power Partners LLC	Woodstock, MN	75 GWh	Dec 2010	Dec 2025	Wind
Riley Generating Station	City of Zeeland - (MI)	Zeeland, MI	844 MWh	Jun 2006	Dec 2025	Natural Gas
Rippey Wind Farm	Greenbacker Renewable Energy Corporation	Grand Junction, IA	167 GWh	Jul 2012	Dec 2025	Wind
River Bend	Entergy Louisiana LLC	St. Francisville, LA	8 TWh	May 1986	Jul 2026	Nuclear
River Fork Solar, LLC	River Fork Solar, LLC	Albion, MI	291 GWh	Sep 2024	Jul 2026	Solar
River Hills	MidAmerican Energy Co	Des Moines, IA	2 GWh	Apr 1966	Dec 2025	Natural Gas
Rivercrest SD	Entegrity Solar Rivercrest SD, LLC	Wilson, AR	2 GWh	Feb 2022	Dec 2025	Solar
Riverside Energy Center	Wisconsin Power & Light Co	Beloit, WI	3 TWh	May 2004	Jul 2026	Natural Gas
Riverview Energy Systems	Riverview Energy Systems	Riverview, MI	36 MWh	Dec 1987	Dec 2025	Landfill Gas
RJC CSG, LLC	Madison Energy Holdings LLC	Owatonna,, MN	2 GWh	May 2021	Dec 2025	Solar
RJC I CSG	RJC I CSG LLC	Owatonna, MN	2 GWh	Jun 2018	Dec 2025	Solar
RJC II Community Solar Garden	RJC II CSG LLC	Owatonna, MN	2 GWh	May 2018	Dec 2025	Solar
Roberds Garden CSG	Roberds Garden LLC	Faribault, MN	2 GWh	Aug 2019	Dec 2025	Solar
Rochester Hydro	Rochester Public Utilities	Mazeppa, MN	22 GWh	Aug 1984	Dec 2025	Water
Rock Aetna Power Partners	Northern States Power Co - Minnesota	Woodstock, MN	84 GWh	Nov 2022	Dec 2025	Wind
Rock County Customer Hosted Solar	Wisconsin Power & Light Co	Janesville, WI	2 GWh	Mar 2025	Dec 2025	Solar
Rock County Wind Fuel, LLC	Rock County Wind Fuel, LLC	Luverne, MN	17 GWh	Apr 2020	Dec 2025	Wind
Rock Lake CT	Great River Energy	Pine City, MN	449 MWh	Mar 1978	Dec 2025	Distillate Fuel Oil
Rock LakeSolar WI, LLC	Wisconsin Electric Power Co	Waterloo, WI	318 MWh	Oct 2025	Dec 2025	Solar
Rockford	City of Rockford- (IA)	Rockford, IA	6 MWh	Jul 1951	Dec 2025	Distillate Fuel Oil
Rockford CS 1	Rockford CS 1, LLC	Rockford, IL	4 GWh	Mar 2021	Dec 2025	Solar
Rockford CS 2	Rockford CS 2, LLC	Rockford, IL	4 GWh	Mar 2021	Dec 2025	Solar
Rockford Plant	SoCore Energy LLC	Rockford, IL	3 GWh	Nov 2024	Dec 2025	Solar
Rockford Solar	Rockford Solar, LLC	Rockford, IL	4 GWh	Nov 2021	Dec 2025	Solar
RockGen Energy Center	Dairyland Power Coop	Cambridge, WI	619 GWh	May 2001	Jul 2026	Natural Gas : 98.4% Distillate Fuel Oil : 1.6%
Rockton	Eagle Creek Renewable Energy, LLC	Rockton, IL	6 GWh	Dec 1928	Dec 2025	Water
Rockville Solar I LLC	CleanCapital Holdings	Indianapolis, IN	2 GWh	Mar 2014	Dec 2025	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