11th largest plant in Iowa · 757th nationally
Rolling Hills Wind Farm is a wind power plant in Iowa with a nameplate capacity of 484 MW. It generates roughly 1.5M MWh per year — enough to power about 143,279 average U.S. homes.
Its capacity factor of 35% reflects intermittent or peaking operation.
| Plant Name | Rolling Hills Wind Farm |
|---|---|
| Operator | Midamerican Energy Co |
| City | Massena |
| County | Cass County |
| State | Iowa |
| ZIP | 50853 |
| Coordinates | 41.19730, -94.77440 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| RHWF | Onshore Wind Turbine | Wind | 484 MW | Operating | 2011 |
| 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%.