Spencer Gas Turbine
Other power plant · Clay County, Iowa
Nameplate capacity
24 MW
Rank in Iowa
#127
of 305 plants
In service since
1970
January 1970
Details
- Primary fuel
- Other
- Technology
- Petroleum Liquids
- Operator
- City of Spencer - (IA)
- County
- Clay County
- Generating units
- 1
- Share of state capacity
- 0.10%
- Rank among other plants in Iowa
- #7 of 90
- EIA plant code
- 1186
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| GT1 | Petroleum Liquids | 24 MW | 17 MW | 1970 | 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
| Maquoketa 1 | Natural gas | 24 MW |
| Mt Pleasant | Other | 24 MW |
| Forest City Light Plant | Other | 22 MW |
| Amana Society Service Company | Other | 22 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 24 MW solar plant and a 24 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