How much power plant capacity does Iowa have?

Iowa has 24.9 GW of operating utility-scale capacity as of August 2026.

What is the largest power plant in Iowa?

Walter Scott Jr Energy Center is the largest at 1.6 GW of coal capacity.

Where does Iowa get its electricity?

Power plants in Iowa generated 69.8 TWh in 2023. The mix is shown above. Power also flows between states, so what plants in a state generate is not the same as what its customers use.

Checked Oct 26, 2026

Iowa Power Plants

Utility-scale generators of 1 megawatt or more in Iowa, as of August 2026 (EIA-860M).

Operating capacity: 24.9 GW
Largest plant: Walter Scott Jr Energy Center; 1.6 GW
Planned through 2028: 1.1 GW
Generation, 2023: 69.8 TWh

Capacity by fuel

Operating nameplate capacity

Wind13.4 GW 53.8%
Coal5.2 GW 21.0%
Natural gas4.3 GW 17.5%
Petroleum906 MW 3.6%
Solar701 MW 2.8%
Hydroelectric184 MW 0.7%
Battery storage110 MW 0.4%
Biomass23.4 MW 0.1%
Other4.0 MW 0.0%

Electricity generated, 2023

Net generation by fuel from EPA eGRID. CO2 output rate 630 lb/MWh

Wind41.4 TWh 59.3%
Coal16.4 TWh 23.5%
Natural gas10.2 TWh 14.7%
Hydroelectric948 GWh 1.4%
Solar518 GWh 0.7%
Biomass209 GWh 0.3%
Petroleum63 GWh 0.1%

Largest power plants

Top 150 by operating capacity. See counties below for every plant

Swipe the table sideways to see more columns.

#	Plant	Fuel	Capacity	Since
1	Walter Scott Jr Energy CenterPottawattamie	Coal	1.6 GW	1978
2	LouisaLouisa	Coal	812 MW	1983
3	OttumwaWapello	Coal	726 MW	1981
4	Marshalltown Generating StationMarshall	Natural gas	709 MW	2017
5	George Neal SouthWoodbury	Coal	696 MW	1979
6	Emery StationCerro Gordo	Natural gas	603 MW	2004
7	George Neal NorthWoodbury	Coal	584 MW	1975
8	Greater Des MoinesPolk	Natural gas	576 MW	2003
9	Highland Wind Project (IA)O'Brien	Wind	502 MW	2015
10	Orient Wind FarmAdair	Wind	501 MW	2018
11	Rolling Hills Wind FarmCass	Wind	484 MW	2011
12	Beaver Creek WindBoone	Wind	340 MW	2017
13	North EnglishPoweshiek	Wind	340 MW	2018
14	Palo Alto Wind FarmPalo Alto	Wind	340 MW	2020
15	Arbor Hill Wind FarmAdair	Wind	310 MW	2018
16	Ida Grove WindIda	Wind	301 MW	2016
17	Pioneer Prairie Wind FarmMitchell	Wind	300 MW	2008
18	Upland PrairieClay	Wind	299 MW	2019
19	Archer Daniels Midland Cedar RapidsLinn	Coal	295 MW	1988
20	Burlington (IA)Des Moines	Natural gas	291 MW	1968
21	Pomeroy Wind FarmPocahontas	Wind	286 MW	2007
22	Muscatine Plant #1Muscatine	Coal	276 MW	1958
23	Lundgren Wind ProjectWebster	Wind	271 MW	2014
24	ElectrifarmBlack Hawk	Natural gas	264 MW	1975
25	Southern Hills Wind FarmUnion	Wind	254 MW	2021
26	Diamond Trail Wind FarmIowa	Wind	253 MW	2020
27	O'Brien WindO'Brien	Wind	250 MW	2016
28	Wever Solar (150MW)Lee	Solar	249 MW	2024
29	Great Pathfinder WindHamilton	Wind	224 MW	2023
30	Shenandoah Hills Wind FarmPage	Wind	214 MW	2025
31	Glaciers Edge Wind ProjectCherokee	Wind	212 MW	2019
32	Eclipse Wind FarmGuthrie	Wind	207 MW	2012
33	Ledyard Windpower, LLCKossuth	Wind	207 MW	2022
34	Plymouth WindPlymouth	Wind	203 MW	2022
35	Chickasaw Wind FarmChickasaw	Wind	202 MW	2023
36	Whispering Willow NorthFranklin	Wind	201 MW	2020
37	CenturyHamilton	Wind	201 MW	2005
38	Ida Grove IIIda	Wind	201 MW	2019
39	FPL Energy Crystal Lake Wind II LLCHancock	Wind	200 MW	2009
40	Heartland Divide IIAudubon	Wind	200 MW	2022
41	Golden PlainsWinnebago	Wind	200 MW	2020
42	Whispering Willow Wind Farm - EastFranklin	Wind	200 MW	2009
43	Turtle Creek Wind Farm LLCMitchell	Wind	199 MW	2018
44	Prairie CreekLinn	Natural gas	199 MW	1958
45	MarshalltownMarshall	Natural gas	189 MW	1978
46	ExiraAudubon	Natural gas	182 MW	2004
47	Archer Daniels Midland ClintonClinton	Coal	180 MW	2009
48	Pleasant HillPolk	Natural gas	180 MW	1990
49	IntrepidBuena Vista	Wind	176 MW	2004
50	Adair Wind FarmAdair	Wind	175 MW	2008
51	English FarmsPoweshiek	Wind	172 MW	2019
52	Salt Creek WindTama	Wind	169 MW	2025
53	Prairie Wind FarmMahaska	Wind	168 MW	2018
54	Walnut Wind FarmPottawattamie	Wind	165 MW	2008
55	Carroll Wind FarmCarroll	Wind	159 MW	2008
56	Barton Windpower LLCWorth	Wind	158 MW	2009
57	Sycamore (IA)Polk	Natural gas	158 MW	1974
58	Adams WindAdams	Wind	154 MW	2015
59	KossuthKossuth	Wind	152 MW	2020
60	Vienna Wind FarmMarshall	Wind	150 MW	2012
61	FPL Energy Crystal Lake Wind LLCHancock	Wind	150 MW	2008
62	FPL Energy Story Wind LLCStory	Wind	150 MW	2008
63	Garden Wind LLCHardin	Wind	150 MW	2009
64	Pleasant Creek Unit 2Linn	Solar	150 MW	2024
65	Wellsburg Wind ProjectGrundy	Wind	141 MW	2014
66	Richland (IA)Sac	Wind	131 MW	2020
67	River HillsPolk	Natural gas	128 MW	1966
68	KeokukLee	Hydroelectric	125 MW	1913
69	Laurel Wind FarmMarshall	Wind	123 MW	2011
70	Macksburg Wind ProjectMadison	Wind	120 MW	2014
71	Earl F WisdomClay	Natural gas	119 MW	1960
72	Summit LakeUnion	Natural gas	119 MW	1973
73	Storm Lake 1Buena Vista	Wind	114 MW	1999
74	Contrail Wind FarmTaylor	Wind	112 MW	2020
75	Morning Light Wind FarmAdair	Wind	111 MW	2012
76	Ames Electric Services Power PlantStory	Natural gas	109 MW	1968
77	Victory Wind FarmCarroll	Wind	105 MW	2006
78	Heartland Divide Wind Project, LLCAudubon	Wind	104 MW	2018
79	Lost Lakes Wind Farm LLCDickinson	Wind	100 MW	2009
80	New Harvest Wind Project LLCCrawford	Wind	100 MW	2011
81	Wapello Solar LLCLouisa	Solar	100 MW	2021
82	Holliday Creek SolarWebster	Solar	100 MW	2022
83	Crane Creek Wind Energy CenterHoward	Wind	99.0 MW	2009
84	Franklin County Wind FarmFranklin	Wind	99.0 MW	2012
85	Osceola Windpower LLCOsceola	Wind	98.2 MW	2008
86	Hancock County Wind Energy CenterHancock	Wind	98.0 MW	2002
87	Ivester Wind FarmGrundy	Wind	90.8 MW	2018
88	Lime CreekCerro Gordo	Petroleum	90.2 MW	1991
89	Roquette AmericaLee	Natural gas	84.4 MW	2004
90	Storm Lake IIBuena Vista	Wind	80.2 MW	1999
91	Old Gold Energy Center, LLCWorth	Wind	80.0 MW	2001
92	Northern Iowa Windpower IIWorth	Wind	80.0 MW	2008
93	Charles City Wind FarmFloyd	Wind	80.0 MW	2008
94	Pocahontas Prairie Wind FarmPocahontas	Wind	80.0 MW	2012
95	Sac County Wind, LLCSac	Wind	80.0 MW	2021
96	Ames GTStory	Petroleum	78.7 MW	1972
97	Coralville GTJohnson	Natural gas	72.0 MW	1970
98	Kossuth County WindKossuth	Wind	70.0 MW	2022
99	Crystal Lake 3 LLCWinnebago	Wind	66.0 MW	2009
100	Saratoga Wind FarmHoward	Wind	66.0 MW	2019
101	Independence Wind FarmDelaware	Wind	55.4 MW	2021
102	Red Rock Hydro PlantMarion	Hydroelectric	55.2 MW	2021
103	Streeter StationBlack Hawk	Natural gas	51.5 MW	1963
104	Rippey Wind FarmGreene	Wind	50.0 MW	2012
105	Pleasant Creek Unit 1Linn	Solar	50.0 MW	2024
106	Creston Solar (50 MW)Union	Solar	50.0 MW	2024
107	Osceola Windpower IIOsceola	Wind	49.6 MW	2008
108	Flying Cloud Power Partners LLCDickinson	Wind	43.5 MW	2003
109	Gas Turbine (IA)Black Hawk	Natural gas	43.4 MW	1968
110	Hawkeye Power Partners LLCCerro Gordo	Wind	42.0 MW	1999
111	Cerro Gordo Wind FarmCerro Gordo	Wind	42.0 MW	2020
112	IndianolaWarren	Petroleum	40.9 MW	1977
113	Elk Wind FarmDelaware	Wind	40.8 MW	2011
114	University of Iowa Main Power PlantJohnson	Natural gas	40.5 MW	1974
115	Cargill Corn Milling DivisionMonroe	Natural gas	40.0 MW	1952
116	Iowa State UniversityStory	Natural gas	39.8 MW	1970
117	Prescott Wind FarmAdams	Wind	38.7 MW	2024
118	Merl ParrFloyd	Natural gas	36.0 MW	1969
119	Hawkeye Wind FarmBremer	Wind	35.0 MW	2012
120	Top of Iowa Windfarm IIIWorth	Wind	29.7 MW	2008
121	Pella PeakingMarion	Petroleum	28.0 MW	2003
122	New HamptonChickasaw	Natural gas	26.5 MW	1967
123	Waverly Municipal Electric North PlantBremer	Petroleum	25.1 MW	1958
124	Arbor Hill SolarAdair	Solar	25.0 MW	2022
125	Maquoketa 1Jackson	Natural gas	24.4 MW	1956
126	Mt PleasantHenry	Petroleum	24.0 MW	2002
127	Spencer Gas TurbineClay	Petroleum	23.8 MW	1970
128	Forest City Light PlantWinnebago	Petroleum	22.0 MW	1950
129	Amana Society Service CompanyIowa	Petroleum	21.6 MW	2001
130	Webster CityHamilton	Petroleum	21.3 MW	1972
131	Crosswind Energy ProjectPalo Alto	Wind	21.0 MW	2007
132	Carroll Area Wind FarmCarroll	Wind	20.7 MW	2015
133	ShenandoahPage	Petroleum	20.0 MW	2000
134	Winnebago Wind Power ProjectWinnebago	Wind	20.0 MW	2008
135	Osage (IA)Mitchell	Natural gas	19.0 MW	1963
136	Waterloo LundquistBlack Hawk	Petroleum	18.0 MW	2000
137	Lake MillsWinnebago	Petroleum	17.7 MW	1962
138	WintersetMadison	Petroleum	17.6 MW	1956
139	VintonBenton	Natural gas	17.5 MW	1946
140	AlgonaKossuth	Petroleum	16.1 MW	1965
141	Knoxville IndustrialMarion	Petroleum	16.0 MW	2000
142	Alliant SBD 9106 Rockwell CRLinn	Petroleum	16.0 MW	1992
143	EsthervilleEmmet	Natural gas	15.6 MW	1946
144	Hardin Hilltop Wind LLCGreene	Wind	14.7 MW	2007
145	NCAH Central Utility PlantStory	Petroleum	14.1 MW	2000
146	West LibertyMuscatine	Petroleum	14.0 MW	1982
147	Story CityStory	Petroleum	13.9 MW	1964
148	South Plant (IA)Bremer	Petroleum	12.0 MW	2000
149	Alliant SBD 9107 JBS USAMarshall	Petroleum	11.4 MW	1992
150	Metro Methane Recovery FacilityPolk	Biomass	11.2 MW	1998

Show all 150Show fewer

Planned and under construction

Largest planned additions, including expansions of operating plants

Swipe the table sideways to see more columns.

Plant	Planned	Operating now
Silver Queen Wind FarmCrawford	252 MW	None yet
Hawkeye Solar II, LLCClinton	250 MW	None yet
Hawkeye Solar, LLCClinton	200 MW	None yet
Rock Creek SolarClinton	150 MW	None yet
Coggon Solar LLCLinn	100 MW	None yet
Mills Solar ProjectMills	50.0 MW	None yet
Muscatine Plant #1Muscatine	35.0 MW	276 MW
MPW Solar 1Muscatine	24.0 MW	None yet
Teeple CreekAllamakee	2.5 MW	None yet

Power plants by county

Operating plants located in each county

Capacity is the nameplate rating of generators that are operating or on standby. Solar capacity is in alternating current (AC). Batteries are counted by power (MW), not by stored energy (MWh).

Frequently asked questions

How much power plant capacity does Iowa have?: Iowa has 24.9 GW of operating utility-scale capacity as of August 2026.
What is the largest power plant in Iowa?: Walter Scott Jr Energy Center is the largest at 1.6 GW of coal capacity.
Where does Iowa get its electricity?: Power plants in Iowa generated 69.8 TWh in 2023. The mix is shown above. Power also flows between states, so what plants in a state generate is not the same as what its customers use.

Source: U.S. Energy Information Administration, Form EIA-860M; U.S. EPA eGRID · Data for August 2026

Data sources

Form EIA-860M Monthly Electric Generator InventoryU.S. Energy Information Administration
Emissions & Generation Resource Integrated Database (eGRID)U.S. Environmental Protection Agency

Data for August 2026

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About this data

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