Nameplate capacity
9.8 MW
Rank in Iowa
#156
of 305 plants
In service since
1940
August 1940
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Internal Combustion Engine
- Operator
- City of Montezuma - (IA)
- County
- Poweshiek County
- Generating units
- 8
- Share of state capacity
- 0.04%
- Rank among natural gas plants in Iowa
- #31 of 42
- EIA plant code
- 1165
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 7 | Natural Gas Internal Combustion Engine | 2.5 MW | 2.5 MW | 1974 | Standby/Backup: available for service but not normally used |
| 8 | Petroleum Liquids | 1.8 MW | 1.8 MW | 1998 | Standby/Backup: available for service but not normally used |
| 9 | Petroleum Liquids | 1.8 MW | 1.8 MW | 2000 | Standby/Backup: available for service but not normally used |
| 6 | Natural Gas Internal Combustion Engine | 1.7 MW | 1.6 MW | 1967 | Standby/Backup: available for service but not normally used |
| 5 | Petroleum Liquids | 1.1 MW | 1.0 MW | 1959 | Standby/Backup: available for service but not normally used |
| 4 | Petroleum Liquids | 0.5 MW | 0.5 MW | 1947 | Standby/Backup: available for service but not normally used |
| 1 | Petroleum Liquids | 0.2 MW | 0.2 MW | 1940 | Standby/Backup: available for service but not normally used |
| 10 | Petroleum Liquids | 0.2 MW | 0.2 MW | 2003 | Standby/Backup: available for service but not normally used |
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
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 9.8 MW solar plant and a 9.8 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