Mosaic New Wales Operations
Other power plant · Polk County, Florida
Nameplate capacity
136 MW
Rank in Florida
#61
of 346 plants
In service since
1981
August 1981
Details
- Primary fuel
- Other
- Technology
- All Other
- Operator
- Mosaic Fertilizer LLC
- County
- Polk County
- Generating units
- 4
- Share of state capacity
- 0.17%
- Rank among other plants in Florida
- #4 of 41
- EIA plant code
- 10434
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| TG2 | All Other | 59 MW | 48 MW | 1984 | Operating |
| TG4 | All Other | 35 MW | 24 MW | 2014 | Operating |
| TG3 | All Other | 32 MW | 32 MW | 1982 | Operating |
| TG1 | All Other | 10 MW | 8.0 MW | 1981 | Out of service and NOT expected to return to service in next calendar year |
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 Florida
| Tenmile Creek | Solar | 149 MW |
| John R Kelly | Natural gas | 142 MW |
| Larsen Memorial | Natural gas | 134 MW |
| Okeelanta Cogeneration | Other | 129 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 136 MW solar plant and a 136 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 Florida power plants · What Florida actually generates