Mosaic Phosphates Uncle Sam
Other power plant · St James County, Louisiana
Nameplate capacity
26 MW
Rank in Louisiana
#73
of 98 plants
In service since
1968
January 1968
Details
- Primary fuel
- Other
- Technology
- All Other
- Operator
- Mosaic Phosphates Co.
- County
- St James County
- Generating units
- 2
- Share of state capacity
- 0.09%
- Rank among other plants in Louisiana
- #12 of 21
- EIA plant code
- 10198
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| GEN3 | All Other | 15 MW | 15 MW | 2016 | Operating |
| GEN2 | All Other | 11 MW | 11 MW | 1968 | 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 Louisiana
| Lake Charles Polymers | Natural gas | 31 MW |
| Ivanhoe Generation Facility | Other | 31 MW |
| Oak Point Cogen | Natural gas | 24 MW |
| Arq Solutions Red River | Other | 21 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 26 MW solar plant and a 26 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 Louisiana power plants · What Louisiana actually generates