Nameplate capacity
4.1 MW
Rank in Iowa
#202
of 305 plants
In service since
1973
September 1973
Details
- Primary fuel
- Other
- Technology
- Petroleum Liquids
- Operator
- City of Hopkinton - (IA)
- County
- Delaware County
- Generating units
- 2
- Share of state capacity
- 0.02%
- Rank among other plants in Iowa
- #52 of 90
- EIA plant code
- 8108
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| CAT | Petroleum Liquids | 2.5 MW | 2.2 MW | 2011 | Operating |
| 1 | Petroleum Liquids | 1.6 MW | 1.6 MW | 1973 | 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
| Bancroft | Other | 4.2 MW |
| Alliant SBD 9403 Aegon DC | Other | 4.1 MW |
| Alta Municipal Utilities | Other | 4.0 MW |
| Lake Mills Gas Recovery | Other | 4.0 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 4.1 MW solar plant and a 4.1 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