Whispering Willow Wind Farm - East
Wind power plant · Franklin County, Iowa
Nameplate capacity
200 MW
Rank in Iowa
#42
of 305 plants
In service since
2009
December 2009
Details
- Primary fuel
- Wind
- Technology
- Onshore Wind Turbine
- Operator
- Interstate Power and Light Co
- County
- Franklin County
- Generating units
- 1
- Share of state capacity
- 0.80%
- Rank among wind plants in Iowa
- #29 of 123
- EIA plant code
- 56355
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Onshore Wind Turbine | 200 MW | 200 MW | 2009 | 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
| Heartland Divide II | Wind | 200 MW |
| Golden Plains | Wind | 200 MW |
| Turtle Creek Wind Farm LLC | Wind | 199 MW |
| Prairie Creek | Natural gas | 199 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 200 MW solar plant and a 200 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