Iowa has 26 solar farms in the EIA Form 860 database, with a combined installed capacity of 673 MW. Of those, 6 plants are utility-scale (50 MW or larger). The largest single facility is Wever Solar (150MW) in Wever, Lee County — a 150 MW plant operated by Interstate Power and Light Co.
Use the interactive Iowa solar farms map below to explore every plant, color-coded by technology type and sized by capacity. Click any solar farm for its name, operator, capacity (MW), technology, and location — or view the full US solar farms interactive map to compare Iowa to every other state.
Type
Capacity
Iowa Solar Farms by the Numbers
- 26 total solar farms in Iowa (EIA Form 860 (US Energy Information Administration), latest reporting period)
- 673 MW total installed solar capacity
- 6 utility-scale plants (50 MW or larger)
- 18 small / community-scale plants (under 5 MW)
Iowa Solar Farms by Technology Type
- 26 Solar Photovoltaic (PV) — standard panel installations, the dominant technology nationwide
The 15 Largest Solar Farms in Iowa
The largest solar farm in Iowa by installed capacity is Wever Solar (150MW) at 150 MW. The 15 largest Iowa solar farms from the latest EIA filing:
| # | Solar Farm | Operator | Capacity | Location |
|---|---|---|---|---|
| 1 | Wever Solar (150MW) | Interstate Power and Light Co | 150 MW | Wever, Lee |
| 2 | Pleasant Creek Unit 2 | Interstate Power and Light Co | 150 MW | Palo, Linn |
| 3 | Wapello Solar LLC | Wapello Solar LLC | 100 MW | Wapello, Louisa |
| 4 | Holliday Creek Solar | MidAmerican Energy Co | 100 MW | Fort Dodge, Webster |
| 5 | Pleasant Creek Unit 1 | Interstate Power and Light Co | 50 MW | Palo, Linn |
| 6 | Creston Solar (50 MW) | Interstate Power and Light Co | 50 MW | Creston, Union |
| 7 | Arbor Hill Solar | MidAmerican Energy Co | 24 MW | Greenfield, Adair |
| 8 | Franklin County Solar | MidAmerican Energy Co | 7 MW | Hampton, Franklin |
| 9 | Cedar Rapids Community Solar | Interstate Power and Light Co | 4 MW | Cedar Rapids, Linn |
| 10 | Neal Energy Center Solar | MidAmerican Energy Co | 4 MW | Salix, Woodbury |
| 11 | Grinnell College | Azimuth 180 Solar Electric, LLC | 4 MW | Grinnell, Poweshiek |
| 12 | West Dubuque Solar | Interstate Power and Light Co | 3 MW | Dubuque, Dubuque |
| 13 | Forest City Solar | Butter Solar, LLC | 3 MW | Forest City, Winnebago |
| 14 | Waterloo Solar (IA) | MidAmerican Energy Co | 3 MW | Waterloo, Black Hawk |
| 15 | Johnson County Hills Solar | MidAmerican Energy Co | 3 MW | Iowa City, Johnson |
Top Solar Operators in Iowa
Five operators account for the largest share of solar generation in Iowa:
- Interstate Power and Light Co — 10 plants, 414 MW total
- MidAmerican Energy Co — 6 plants, 141 MW total
- Wapello Solar LLC — 1 plant, 100 MW total
- Azimuth 180 Solar Electric, LLC — 1 plant, 4 MW total
- Butter Solar, LLC — 1 plant, 3 MW total
Solar Permitting and Regulation in Iowa
Utility-scale solar in Iowa is overseen by the Iowa Utilities Board. Wholesale market participation and interconnection are regulated by the Federal Energy Regulatory Commission (FERC) and the relevant ISO/RTO. All generators above 1 MW must report capacity, fuel type, and location to the EIA via Form 860 — the dataset used in this map.
Frequently Asked Questions
How many solar farms are in Iowa?
Iowa has 26 solar farms in the latest EIA Form 860 filing — a combined 673 MW of installed capacity. Of those, 6 are utility-scale (50 MW or larger).
What is the largest solar farm in Iowa?
The largest solar farm in Iowa is Wever Solar (150MW), located in Wever (Lee County), with 150 MW of installed capacity. It is operated by Interstate Power and Light Co.
How much solar capacity does Iowa have?
Iowa has 673 MW of installed solar capacity across 26 plants reporting to the EIA. This counts only the solar portion (Solar_MW field) — co-located batteries and other generation are reported separately.
Who regulates solar farms in Iowa?
Solar farms in Iowa are regulated by the Iowa Utilities Board at the state level, with federal oversight from FERC. The EIA collects annual data on every utility-scale solar plant via Form 860.
View all 6,406 US solar farms on the national interactive map
