Nameplate capacity
24 MW
Rank in Iowa
#125
of 305 plants
In service since
1956
June 1956
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Internal Combustion Engine
- Operator
- City of Maquoketa - (IA)
- County
- Jackson County
- Generating units
- 9
- Share of state capacity
- 0.10%
- Rank among natural gas plants in Iowa
- #24 of 42
- EIA plant code
- 1162
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 7 | Natural Gas Internal Combustion Engine | 6.5 MW | 6.0 MW | 1982 | Operating |
| 1A | Natural Gas Internal Combustion Engine | 3.1 MW | 2.8 MW | 2004 | Operating |
| 2A | Natural Gas Internal Combustion Engine | 3.1 MW | 2.8 MW | 2004 | Operating |
| 6 | Natural Gas Internal Combustion Engine | 2.5 MW | 2.1 MW | 1962 | Operating |
| 3 | Natural Gas Internal Combustion Engine | 2.1 MW | 1.8 MW | 1969 | Operating |
| 4A | Petroleum Liquids | 1.8 MW | 1.7 MW | 1999 | Operating |
| 8 | Petroleum Liquids | 1.8 MW | 1.7 MW | 1996 | Operating |
| 9 | Petroleum Liquids | 1.8 MW | 1.7 MW | 2000 | Operating |
| 5 | Natural Gas Internal Combustion Engine | 1.7 MW | 1.4 MW | 1956 | 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
| Waverly Municipal Electric North Plant | Other | 25 MW |
| Arbor Hill Solar | Solar | 25 MW |
| Mt Pleasant | Other | 24 MW |
| Spencer Gas Turbine | Other | 24 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