FERNANDINA BEACH MILL
OperatingBiomass power plant
- Capacity
- 118 MW
- Primary fuel
- Biomass
- County
- Nassau County
- Operator
- ROCKTENN-JACKSON FENANDINA
- Status
- Operating
- Commissioned
- 1982
- EIA plant ID
- 10202
- Generators
- 2
- Technology
- Wood/Wood Waste Biomass
- Net generation (2024)
- 568 GWh
- Capacity factor (2024, EIA nameplate)
- 67%
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 30.6818, -81.4553
FERNANDINA BEACH MILL, a 118 MW Biomass power plant in Nassau County, Florida. Operated by ROCKTENN-JACKSON FENANDINA, commissioned 1982.
How FERNANDINA BEACH MILL compares
With 118 MW of capacity, FERNANDINA BEACH MILL ranks 54th among the 110 operating power plants Bywatts maps in Florida and 2nd of the 21 operating Biomass plants in the state. It accounts for about 12% of Florida's operating Biomass capacity and 0.2% of all operating capacity in the state. Nationally it is the 9th-largest of the 350 operating Biomass plants in the database. Commissioned in 1982, it is older than 67% of the 108 operating Florida plants with a recorded commissioning year. It shares Nassau County with one other operating plant, RAYONIER FERNANDINA MILL.
EIA-860 lists 2 generators at the site with 97 MW of nameplate capacity, all wood/wood waste biomass technology (this page's HIFLD capacity figure is 118 MW). Net generation was 568 GWh in 2024 (a 67% capacity factor), down 2% from 2022. Its generators came online between 1982 and 1988.
Grid neighborhood
The closest transmission line found within 10 miles is a 138 kV line owned by FLORIDA POWER & LIGHT CO, about 3.6 miles away. Another 6 operating power plants totaling 1,895 MW sit within 25 miles; the largest is NORTHSIDE GENERATING STATION (1,407 MW, Oil). Within 50 miles is one mapped data center, SBA Edge - Jacksonville (JAX) in Jacksonville, about 27.2 miles away.
Computed by Bywatts from HIFLD power plant and transmission line records, EIA-860/923 survey data and PeeringDB data center locations; distances are straight-line. Sources and methodology
Weather peril exposure
FERNANDINA BEACH MILL is a 118 MW biomass power plant in Nassau County, FL, operated by ROCKTENN-JACKSON FENANDINA, commissioned in 1982. Nassau County carries elevated modeled catastrophe exposure in the FEMA National Risk Index, scoring 2.6 of 5 at the 41st national percentile. Hurricane is the leading peril, rated Relatively Moderate by FEMA at the 88th percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to a biomass plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Nassau County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Hurricane | Relatively Moderate | 88th | 4.5 of 5 | 0.29 |
| Coastal flooding | Relatively Moderate | 75th | 4.0 of 5 | 3.5 |
| Wildfire | Relatively Low | 75th | 4.0 of 5 | <0.01 |
| Earthquake | Relatively Low | 50th | 3.0 of 5 | <0.01 |
| Ice storm | Relatively Low | 49th | 2.9 of 5 | 0.20 |
| Lightning | Relatively Moderate | 36th | 2.4 of 5 | 73.4 |
| Tornado | Relatively Low | 30th | 2.2 of 5 | 0.32 |
| Riverine flooding | Relatively Low | 26th | 2.0 of 5 | 0.57 |
| Heat wave | Relatively Low | 25th | 2.0 of 5 | 4.2 |
| Hail | Very Low | 24th | 2.0 of 5 | 1.8 |
| Strong wind | Relatively Low | 5th | 1.2 of 5 | 0.87 |
| Winter weather | Very Low | 5th | 1.2 of 5 | 0.10 |
Model hail, wind and flood exposure for Nassau 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.