Nameplate capacity
199 MW
Rank in Iowa
#44
of 305 plants
In service since
1958
October 1958
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Steam Turbine
- Operator
- Interstate Power and Light Co
- County
- Linn County
- Generating units
- 2
- Share of state capacity
- 0.80%
- Rank among natural gas plants in Iowa
- #6 of 42
- EIA plant code
- 1073
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 4 | Natural Gas Steam Turbine | 149 MW | 112 MW | 1967 | Operating |
| 3 | Conventional Steam Coal | 50 MW | 29 MW | 1958 | 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
| Whispering Willow Wind Farm - East | Wind | 200 MW |
| Turtle Creek Wind Farm LLC | Wind | 199 MW |
| Marshalltown | Natural gas | 189 MW |
| Exira | Natural gas | 182 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 199 MW solar plant and a 199 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