Nameplate capacity
812 MW
Rank in Iowa
#2
of 305 plants
In service since
1983
October 1983
Details
- Primary fuel
- Coal
- Technology
- Conventional Steam Coal
- Operator
- MidAmerican Energy Co
- County
- Louisa County
- Generating units
- 1
- Share of state capacity
- 3.26%
- Rank among coal plants in Iowa
- #2 of 8
- EIA plant code
- 6664
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Conventional Steam Coal | 812 MW | 746 MW | 1983 | 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
| Walter Scott Jr Energy Center | Coal | 1,648 MW |
| Ottumwa | Coal | 726 MW |
| Marshalltown Generating Station | Natural gas | 709 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 812 MW solar plant and a 812 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