Nameplate capacity
501 MW
Rank in Iowa
#10
of 305 plants
In service since
2018
December 2018
Details
- Primary fuel
- Wind
- Technology
- Onshore Wind Turbine
- Operator
- MidAmerican Energy Co
- County
- Adair County
- Generating units
- 2
- Share of state capacity
- 2.01%
- Rank among wind plants in Iowa
- #2 of 123
- EIA plant code
- 61077
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 2 | Onshore Wind Turbine | 399 MW | 400 MW | 2019 | Operating |
| 1 | Onshore Wind Turbine | 102 MW | 100 MW | 2018 | Operating |
Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.
Similarly sized plants in Iowa
| Greater Des Moines | Natural gas | 576 MW |
| Highland Wind Project (IA) | Wind | 502 MW |
| Rolling Hills Wind Farm | Wind | 484 MW |
| Beaver Creek Wind | Wind | 340 MW |
About this data
From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 501 MW solar plant and a 501 MW nuclear plant have the same entry here and produce very different amounts of electricity.
“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All Iowa power plants · What Iowa actually generates