Nameplate capacity
7.4 MW
Rank in Wisconsin
#122
of 278 plants
In service since
1952
February 1952
Details
- Primary fuel
- Other
- Technology
- Petroleum Liquids
- Operator
- City of Fennimore - (WI)
- County
- Grant County
- Generating units
- 5
- Share of state capacity
- 0.04%
- Rank among other plants in Wisconsin
- #14 of 36
- EIA plant code
- 4114
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 6 | Petroleum Liquids | 1.8 MW | 1.8 MW | 1999 | Standby/Backup: available for service but not normally used |
| 7 | Petroleum Liquids | 1.8 MW | 1.8 MW | 1999 | Standby/Backup: available for service but not normally used |
| 8 | Petroleum Liquids | 1.8 MW | 1.8 MW | 1999 | Standby/Backup: available for service but not normally used |
| 4 | Petroleum Liquids | 1.1 MW | 1.1 MW | 1964 | Standby/Backup: available for service but not normally used |
| 5 | Petroleum Liquids | 0.9 MW | 0.9 MW | 1952 | 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 Wisconsin
| Silver Lake Solar WI, LLC | Solar | 7.5 MW |
| Spring Prairie Solar WI, LLC | Solar | 7.5 MW |
| Du Bay | Hydro | 7.2 MW |
| Blount BESS | Battery storage | 7.0 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 7.4 MW solar plant and a 7.4 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 Wisconsin power plants · What Wisconsin actually generates