58th largest plant in Iowa · 1881st nationally
Vienna Wind Farm is a wind power plant in Iowa with a nameplate capacity of 150 MW. It generates roughly 403.3k MWh per year — enough to power about 38,405 average U.S. homes.
Its capacity factor of 31% reflects intermittent or peaking operation.
| Plant Name | Vienna Wind Farm |
|---|---|
| Operator | Midamerican Energy Co |
| City | Marshalltown |
| County | Marshall County |
| State | Iowa |
| ZIP | 50158 |
| Coordinates | 42.15944, -92.77611 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| VIWF | Onshore Wind Turbine | Wind | 106 MW | Operating | 2012 |
| VIIWF | Onshore Wind Turbine | Wind | 44.6 MW | Operating | 2013 |
| 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%.