Arbor Hill Wind Farm
Wind power plant · Adair County, Iowa
Nameplate capacity
310 MW
Rank in Iowa
#15
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
- 1.24%
- Rank among wind plants in Iowa
- #7 of 123
- EIA plant code
- 62132
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| WT1 | Onshore Wind Turbine | 250 MW | 250 MW | 2018 | Operating |
| 1 | Onshore Wind Turbine | 60 MW | 60 MW | 2020 | 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
| North English | Wind | 340 MW |
| Palo Alto Wind Farm | Wind | 340 MW |
| Ida Grove Wind | Wind | 301 MW |
| Pioneer Prairie Wind Farm | Wind | 300 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 310 MW solar plant and a 310 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