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%

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
Hutchinson Plant #2	Hutchinson Utilities Comm	Hutchinson, MN	28 GWh	Oct 1994	Dec 2025	Natural Gas
Michelangelo Wind 1 LLC	Novis Renewables, LLC	Huxley, IA	10 GWh	Feb 2017	Dec 2025	Wind
Michelangelo Wind 3 LLC	Michelangelo Wind 3 LLC	Huxley, IA	10 GWh	Jan 2017	Dec 2025	Wind
Ida Grove Wind	MidAmerican Energy Co	Ida Grove, IA	1 TWh	Aug 2016	Dec 2025	Wind
Ida Grove II	MidAmerican Energy Co	Ida Grove, IA	686 GWh	Nov 2019	Jul 2026	Wind
Maywood Photovoltaic Project	ENI New Energy US Inc	Indianapolis, IN	11 GWh	Feb 2014	Dec 2024	Solar
Lenape II	Lenape Solar II, LLC	Indianapolis, IN	5 GWh	Oct 2015	Dec 2025	Solar
Rockville Solar I LLC	CleanCapital Holdings	Indianapolis, IN	2 GWh	Mar 2014	Dec 2025	Solar
M. G. Emmett J. Bean Federal Center	U.S. General Services Administration	Indianapolis, IN	519 MWh	Mar 2011	Dec 2024	Solar
Belmont	Marion Solar LLC	Indianapolis, IN	5 GWh	Oct 2015	Dec 2025	Solar
INDY III	Terraform Arcadia	Indianapolis, IN	3 GWh	Jul 2015	Dec 2025	Solar
Marion Solar LNG	Marion Solar LLC	Indianapolis, IN	2 GWh	Sep 2015	Dec 2025	Solar
Indy Grocers	Terraform Arcadia	Indianapolis, IN	1 GWh	May 2015	Dec 2025	Solar
Indy Solar III, LLC	Onward Energy	Indianapolis, IN	13 GWh	Nov 2013	Jul 2026	Solar
Duke Building 129	Concord New Energy	Indianapolis, IN	4 GWh	Nov 2014	Dec 2025	Solar
IND Community Solar Farm 1st Phase	Terraform Arcadia	Indianapolis, IN	14 GWh	Oct 2013	Dec 2025	Solar
Duke Building 98	Concord New Energy	Indianapolis, IN	4 GWh	Nov 2014	Dec 2025	Solar
Indianapolis Motor Speedway Solar PV	Boralex US Operations LLC	Indianapolis, IN	13 GWh	May 2014	Dec 2025	Solar
Duke Building 87	Concord New Energy	Indianapolis, IN	3 GWh	Nov 2014	Dec 2025	Solar
IND Solar Farm (Phase IIA)	Terraform Arcadia	Indianapolis, IN	6 GWh	Nov 2014	Dec 2025	Solar
Rockville Solar II, LLC	CleanCapital Holdings	Indianapolis, IN	912 MWh	Jul 2014	Dec 2025	Solar
Indy Solar II, LLC	Onward Energy	Indianapolis, IN	15 GWh	Nov 2013	Jul 2026	Solar
Indy Solar I, LLC	Onward Energy	Indianapolis, IN	15 GWh	Nov 2013	Jul 2026	Solar
Harding Street	AES Indiana	Indianapolis, IN	4 TWh	May 1958	Jul 2026	Natural Gas
Georgetown	AES Indiana	Indianapolis, IN	307 GWh	May 2000	Dec 2025	Natural Gas
CC Perry K	Citizens Thermal Energy	Indianapolis, IN	15 GWh	Dec 1924	Jul 2026	Natural Gas
Harvest Gold Solar	Harvest Gold Solar Power, LLC	Indianola, MS	197 GWh	Jul 2024	Jul 2026	Solar
Grand Rapids	Wisconsin Public Service Corp	Ingalls, MI	35 GWh	May 1918	Dec 2025	Water
Green Lake Solar	Heritage Sustainable Energy. LLC	Interlochen, MI	1 GWh	Sep 2018	Dec 2025	Solar
International Falls Power	Boise White Paper LLC	International Falls, MN	57 GWh	Dec 1923	Jul 2026	Water
Boise Cascade International Falls	Boise White Paper LLC	International Falls, MN	338 GWh	Dec 1926	Jul 2026	Black Liquor : 63.6% Natural Gas : 22.5% Wood/Wood Waste Solids : 12.6% Sludge Waste : 1.3%
Inver Hills	Northern States Power Co - Minnesota	Inver Grove Heights, MN	130 GWh	Mar 1972	Dec 2025	Natural Gas : 98.8% Distillate Fuel Oil : 1.2%
Johnson County Hills Solar	MidAmerican Energy Co	Iowa City, IA	6 GWh	Dec 2021	Dec 2025	Solar
Franklin County Wind Farm	Interstate Power and Light Co	Iowa Falls, IA	271 GWh	Nov 2012	Dec 2025	Wind
Whispering Willow Wind Farm - East	Interstate Power and Light Co	Iowa Falls, IA	405 GWh	Nov 2009	Dec 2025	Wind
Pleasantville Solar Park	Pleasantville Solar Park LLC	Ipava, IL	259 GWh	Oct 2025	Jul 2026	Solar
Grandfather Falls	Wisconsin Public Service Corp	Irma, WI	79 GWh	Nov 1938	Dec 2025	Water
Big Quinnesec 61	Wisconsin Electric Power Co	Iron Mountain, MI	2 GWh	Apr 1914	Dec 2025	Water
Big Quinnesec 92	Wisconsin Electric Power Co	Iron Mountain, MI	100 GWh	Oct 1949	Dec 2025	Water
Superior Falls	Northern States Power Co - Minnesota	Ironwood, MI	8 GWh	Dec 1916	Dec 2025	Water
Beebe 1A	Beebe Renewable Energy, LLC	Ithaca, MI	186 GWh	Nov 2012	Dec 2025	Wind
Beebe 1B	Beebe 1B Renewable Energy, LLC	Ithaca, MI	127 GWh	Nov 2014	Dec 2025	Wind
Red Pine Wind Project	EDF Renewable Asset Holdings, Inc.	Ivanhoe, MN	782 GWh	Nov 2017	Jul 2026	Wind
MinnDakota Wind LLC	Avangrid Power LLC	Ivanhoe, MN	337 GWh	Dec 2007	Dec 2025	Wind
Jackson Generating Station	Consumers Energy Co - (MI)	Jackson, MI	2 TWh	Jun 2002	Jul 2026	Natural Gas
Hinds Energy Facility	Entergy Mississippi LLC	Jackson, MS	2 TWh	Apr 2001	Jul 2026	Natural Gas
Jackson (MO)	City of Jackson - (MO)	Jackson, MO	202 MWh	Dec 1935	Dec 2025	Distillate Fuel Oil : 67.1% Natural Gas : 32.9%
Prairie Creek Solar	Sol Systems	Jacksonville, IL	59 GWh	Oct 2023	Jul 2026	Solar
Jamestown	Otter Tail Power Co	Jamestown, ND	1 GWh	Apr 1976	Dec 2025	Distillate Fuel Oil
Janesville	City of Janesville - (MN)	Janesville, MN	35 MWh	Apr 1955	Dec 2025	Distillate Fuel Oil : 97.5% Natural Gas : 2.5%
Enter Solar	Arcadia Solar, LLC	Janesville, MN	2 GWh	Dec 2018	Dec 2025	Solar
Novel Jewison Solar CSG	REA Investments, LLC	Janesville, MN	1 GWh	Sep 2020	Dec 2025	Solar
Guse CSG	Terraform Arcadia	Janesville, MN	2 GWh	Aug 2018	Dec 2025	Solar
Ameresco Janesville	AMERESCO Janesville LLC	Janesville, WI	3 GWh	Sep 2004	Dec 2025	Landfill Gas
Rock County Customer Hosted Solar	Wisconsin Power & Light Co	Janesville, WI	2 GWh	Mar 2025	Dec 2025	Solar
Janesville Community Solar	Wisconsin Power & Light Co	Janesville, WI	3 GWh	Mar 2025	Dec 2025	Solar
Big Cajun 1	Louisiana Generating LLC	Jarreau, LA	158 GWh	May 1972	Dec 2025	Natural Gas
Sam Rayburn Dam	USACE-Fort Worth District	Jasper, TX	208 GWh	Aug 1965	Dec 2025	Water
Jeffers Wind 20 LLC	Northern States Power Co - Minnesota	Jeffers, MN	196 GWh	Sep 2008	Dec 2025	Wind
Ameresco Jefferson City	AMERESCO Jefferson City LLC	Jefferson City, MO	16 GWh	Feb 2009	Dec 2025	Landfill Gas
Fairgrounds	Union Electric Co - (MO)	Jefferson City, MO	21 MWh	Jul 1974	Dec 2025	Distillate Fuel Oil
Hardin Hilltop Wind LLC	Hardin Holdco LLC	Jefferson, IA	31 GWh	Apr 2007	Dec 2025	Wind
Jefferson Solar Park	Concord New Energy	Jefferson, WI	577 MWh	Nov 2013	Dec 2025	Solar
Crawfish River	Wisconsin Power & Light Co	Jefferson, WI	129 GWh	Nov 2023	Jul 2026	Solar
Bayou Cove Peaking Power	Bayou Cove Peaking Power, LLC	Jennings, LA	131 GWh	Jun 2002	Jul 2026	Natural Gas
Hickory Solar	Hickory Solar LLC	Jerseyville, IL	266 GWh	Aug 2024	Jul 2026	Solar
POET Biorefining - Jewell	POET Biorefining - Jewell	Jewell, IA	11 GWh	Feb 2019	Dec 2025	Natural Gas
Jim Falls	Northern States Power Co - Minnesota	Jim Falls, WI	105 GWh	Jun 1988	Dec 2025	Water
Sycamore (IA)	MidAmerican Energy Co	Johnston, IA	30 GWh	Jul 1974	Dec 2025	Natural Gas
Old Gold Energy Center, LLC	Old Gold Energy Center, LLC	Joice, IA	57 GWh	Sep 2001	Dec 2025	Wind
Lake Catherine	Entergy Arkansas LLC	Jones Mill, AR	336 GWh	Mar 1970	Dec 2025	Natural Gas
Jonesboro City Water & Light Plant	City Water and Light Plant - (AR)	Jonesboro, AR	57 GWh	Jun 1999	Dec 2025	Natural Gas : 99.9%
Jonesboro CWL Solar Park	City Water and Light Plant - (AR)	Jonesboro, AR	21 GWh	May 2022	Dec 2025	Solar
MSC-Scott01 LLC	MSC-Scott01 LLC	Jordan, MN	754 MWh	Jul 2019	Dec 2025	Solar
Jordan Creek Wind Farm, LLC	Jordan Creek Wind Farm, LLC	Judyville, IN	1 TWh	Nov 2020	Jul 2026	Wind
Kahoka	City of Kahoka - (MO)	Kahoka, MO	5 MWh	Dec 1940	Dec 2024	Distillate Fuel Oil
Western Michigan Solar Gardens	Consumers Energy Co - (MI)	Kalamazoo, MI	2 GWh	Jul 2016	Jul 2026	Solar
Western Michigan University Power Plant	Western Michigan University	Kalamazoo, MI	81 GWh	Jul 1997	Dec 2025	Natural Gas
Kalkaska CT #1	Michigan Public Power Agency	Kalkaska, MI	58 GWh	Nov 2002	Dec 2025	Natural Gas
Farmers Electric Cooperative - Kalona	Farmers Electric Coop - (IA)	Kalona, IA	174 MWh	Feb 2001	Dec 2025	Distillate Fuel Oil
Kankakee Solar 4 LLC	Kankakee Solar 4 LLC	Kankakee, IL	4 GWh	Nov 2020	Dec 2025	Solar
Triple S Solar I LLC CSG	AES Clean Energy	Kansas, IL	381 MWh	Sep 2025	Dec 2025	Solar
Acturus Community Solar	Geronimo Power	Kasota, MN	2 GWh	Nov 2018	Dec 2025	Solar
DodgeSun CSG	Geronimo Power	Kasson, MN	9 GWh	Nov 2017	Dec 2025	Solar
Crux Community Solar	Geronimo Power	Kasson, MN	2 GWh	Dec 2018	Dec 2025	Solar
Dodge Holdco Solar CSG	Dodge Holdco LLC	Kasson, MN	7 GWh	Jun 2017	Dec 2025	Solar
Maston Garden Solar	Maston Garden LLC	Kasson, MN	2 GWh	Apr 2020	Dec 2025	Solar
Zumbro Solar Garden	Zumbro Garden LLC	Kasson, MN	2 GWh	Mar 2020	Dec 2025	Solar
Rapide Croche	City of Kaukauna (WI)	Kaukana, WI	17 GWh	Dec 1925	Dec 2025	Water
Kaukauna City Hydro	City of Kaukauna (WI)	Kaukauna, WI	31 GWh	Nov 1940	Dec 2025	Water
Kaukauna Paper Mill	Thilmany LLC	Kaukauna, WI	92 GWh	Dec 1950	Jul 2026	Black Liquor : 50.3% Natural Gas : 49.7%
Island Street Peaking Plant	WPPI Energy	Kaukauna, WI	20 GWh	May 2004	Dec 2025	Natural Gas
Kaukauna Gas Turbine	City of Kaukauna (WI)	Kaukauna, WI	2 GWh	Apr 1969	Dec 2025	Natural Gas
New Badger	City of Kaukauna (WI)	Kaukauna, WI	42 GWh	Dec 2013	Jul 2026	Water
Pepin Garden	Pepin Garden LLC	Kellogg, MN	2 GWh	Oct 2023	Dec 2025	Solar
UW Parkside	Wisconsin Electric Power Co	Kenosha, WI	4 GWh	Oct 2020	Dec 2025	Solar
Northern Iowa Windpower II	Avangrid Power LLC	Kensett, IA	134 GWh	Dec 2007	Dec 2025	Wind
Top of Iowa Windfarm III	Madison Gas & Electric Co	Kensett, IA	40 GWh	Jan 2008	Dec 2025	Wind
Windwalkers LLC	RWE Clean Energy	Kensett, IA	2 GWh	Aug 2011	Dec 2025	Wind
Barton Windpower LLC	Avangrid Power LLC	Kensett, IA	365 GWh	May 2009	Dec 2025	Wind

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