15th largest plant in Iowa · 997th nationally
Arbor Hill Wind Farm is a wind power plant in Iowa with a nameplate capacity of 310 MW. It generates roughly 1.1M MWh per year — enough to power about 101,842 average U.S. homes.
Its capacity factor of 39% reflects intermittent or peaking operation.
| Plant Name | Arbor Hill Wind Farm |
|---|---|
| Operator | Midamerican Energy Co |
| City | Greenfield |
| County | Adair County |
| State | Iowa |
| ZIP | 50849 |
| Coordinates | 41.40423, -94.26136 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| WT1 | Onshore Wind Turbine | Wind | 250 MW | Operating | 2018 |
| 1 | Onshore Wind Turbine | Wind | 60.0 MW | Operating | 2020 |
| NERC Region | MRO |
|---|---|
| Balancing Authority | Midcontinent Independent Transmission System Operator, Inc.. |
Wind farms harvest kinetic energy from moving air using large rotor blades coupled to generators. Like solar, they produce zero emissions but vary with weather. Onshore wind capacity factors typically run 30–45%; offshore can exceed 50%.