MOSIAC SOUTH PIERCE OPERATIONS
OperatingPower plant
- Capacity
- 46 MW
- County
- Polk County
- Operator
- MOSAIC FERTILIZER LLC
- Status
- Operating
- Commissioned
- 1978
- EIA plant ID
- 10004
- Coordinates
- 27.7652, -81.9388
MOSIAC SOUTH PIERCE OPERATIONS, a 46 MW power plant in Polk County, Florida. Operated by MOSAIC FERTILIZER LLC, commissioned 1978.
Weather peril exposure
MOSIAC SOUTH PIERCE OPERATIONS is a 46 MW power plant in Polk County, FL, operated by MOSAIC FERTILIZER LLC, commissioned in 1978. Polk County carries elevated modeled catastrophe exposure in the FEMA National Risk Index, scoring 3.4 of 5 at the 59th national percentile. Strong wind is the leading peril, rated Very High by FEMA at the 98th percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to this plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Polk County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Strong wind | Very High | 98th | 4.9 of 5 | 1.0 |
| Hurricane | Very High | 92nd | 4.7 of 5 | 0.25 |
| Wildfire | Relatively Moderate | 86th | 4.4 of 5 | <0.01 |
| Lightning | Very High | 59th | 3.4 of 5 | 95.7 |
| Tornado | Relatively High | 37th | 2.5 of 5 | 2.0 |
| Heat wave | Relatively Moderate | 21st | 1.8 of 5 | 3.2 |
| Riverine flooding | Relatively High | 17th | 1.7 of 5 | 1.4 |
| Hail | Relatively Moderate | 15th | 1.6 of 5 | 2.2 |
| Earthquake | Very Low | 9th | 1.3 of 5 | <0.01 |
Perils not assessed in Polk County
These perils carry no usable National Risk Index figure for this county, so they are excluded from the scoring rather than scored zero. A zero would claim the peril was assessed and found benign.
| Peril | Why it is not scored |
|---|---|
| Coastal flooding | FEMA rating is "Not Applicable" for this county |
| Winter weather | FEMA rating is "No Rating" for this county |
| Ice storm | FEMA rating is "Not Applicable" for this county |
Model hail, wind and flood exposure for Polk County in the weather risk calculator
Ratings are the FEMA National Risk Index county hazard ratings; the peril score is a Bywatts transform of the FEMA national percentile. Full data sources and the solar vulnerability methodology are in the weather risk calculator.
Modeled estimate for screening and negotiation. Built from FEMA National Risk Index county hazard data and a solar vulnerability layer documented above. Not a quote, a binder, or actuarial advice, and not a substitute for a carrier's own model. Hazard data: FEMA National Risk Index December 2025, synced 2026-07-24. Resolution is county level, not site level.