Nameplate capacity
5.6 MW
Rank in Michigan
#200
of 289 plants
In service since
1958
January 1958
Details
- Primary fuel
- Other
- Technology
- Petroleum Liquids
- Operator
- City of St Louis - (MI)
- County
- Gratiot County
- Generating units
- 6
- Share of state capacity
- 0.02%
- Rank among other plants in Michigan
- #36 of 55
- EIA plant code
- 1852
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 8 | Petroleum Liquids | 1.5 MW | 1.5 MW | 2003 | Operating |
| 1 | Petroleum Liquids | 1.3 MW | 1.3 MW | 1958 | Standby/Backup: available for service but not normally used |
| 9 | Petroleum Liquids | 1.3 MW | 1.1 MW | 2003 | Standby/Backup: available for service but not normally used |
| 7 | Petroleum Liquids | 1.1 MW | 1.1 MW | 1996 | Standby/Backup: available for service but not normally used |
| 5 | Conventional Hydroelectric | 0.2 MW | 0.2 MW | 2019 | Operating |
| 6 | Conventional Hydroelectric | 0.2 MW | 0.2 MW | 2019 | 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 Michigan
| Sturgis City Diesel Plant | Natural gas | 6.0 MW |
| Fremont Community Digester, LLC | Other | 5.8 MW |
| Croswell | Other | 5.1 MW |
| Hart | Other | 5.1 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 5.6 MW solar plant and a 5.6 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 Michigan power plants · What Michigan actually generates