Vienna Wind Farm
Wind power plant · Marshall County, Iowa
Nameplate capacity
150 MW
Rank in Iowa
#60
of 305 plants
In service since
2012
November 2012
Details
- Primary fuel
- Wind
- Technology
- Onshore Wind Turbine
- Operator
- MidAmerican Energy Co
- County
- Marshall County
- Generating units
- 2
- Share of state capacity
- 0.60%
- Rank among wind plants in Iowa
- #41 of 123
- EIA plant code
- 57874
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| VIWF | Onshore Wind Turbine | 106 MW | 106 MW | 2012 | Operating |
| VIIWF | Onshore Wind Turbine | 45 MW | 45 MW | 2013 | 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
| Adams Wind | Wind | 154 MW |
| Kossuth | Wind | 152 MW |
| FPL Energy Crystal Lake Wind LLC | Wind | 150 MW |
| FPL Energy Story Wind LLC | Wind | 150 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 150 MW solar plant and a 150 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