Emery Station
Natural gas power plant · Cerro Gordo County, Iowa
Nameplate capacity
603 MW
Rank in Iowa
#6
of 305 plants
In service since
2004
May 2004
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Fired Combined Cycle
- Operator
- Interstate Power and Light Co
- County
- Cerro Gordo County
- Generating units
- 3
- Share of state capacity
- 2.42%
- Rank among natural gas plants in Iowa
- #2 of 42
- EIA plant code
- 8031
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| ST1 | Natural Gas Fired Combined Cycle | 256 MW | 242 MW | 2004 | Operating |
| 11 | Natural Gas Fired Combined Cycle | 173 MW | 148 MW | 2004 | Operating |
| 12 | Natural Gas Fired Combined Cycle | 173 MW | 149 MW | 2004 | 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
| Marshalltown Generating Station | Natural gas | 709 MW |
| George Neal South | Coal | 696 MW |
| George Neal North | Coal | 584 MW |
| Greater Des Moines | Natural gas | 576 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 603 MW solar plant and a 603 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