HARTWELL LAKE
OperatingHydro power plant
- Capacity
- 420 MW
- Primary fuel
- Hydro
- County
- Hart County
- Operator
- USCE-SAVANNAH DISTRICT
- Status
- Operating
- Commissioned
- 1962
- EIA plant ID
- 754
- Coordinates
- 34.3566, -82.8218
HARTWELL LAKE, a 420 MW Hydro power plant in Hart County, Georgia. Operated by USCE-SAVANNAH DISTRICT, commissioned 1962.
Weather peril exposure
HARTWELL LAKE is a 420 MW hydro power plant in Hart County, GA, operated by USCE-SAVANNAH DISTRICT, commissioned in 1962. Hart County carries moderate modeled catastrophe exposure in the FEMA National Risk Index, scoring 2.5 of 5 at the 38th national percentile. Lightning is the leading peril, rated Relatively Low by FEMA at the 90th percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to a hydro plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Hart County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Lightning | Relatively Low | 90th | 4.6 of 5 | 55.6 |
| Ice storm | Relatively Moderate | 85th | 4.4 of 5 | 1.6 |
| Earthquake | Relatively Low | 77th | 4.1 of 5 | <0.01 |
| Hurricane | Relatively Low | 71st | 3.8 of 5 | 0.05 |
| Tornado | Relatively Low | 49th | 2.9 of 5 | 0.15 |
| Hail | Relatively Low | 46th | 2.8 of 5 | 4.4 |
| Riverine flooding | Relatively Low | 39th | 2.6 of 5 | 0.50 |
| Strong wind | Relatively Low | 34th | 2.4 of 5 | 2.4 |
| Wildfire | Very Low | 29th | 2.2 of 5 | <0.01 |
| Winter weather | Very Low | 23rd | 1.9 of 5 | 3.2 |
| Heat wave | Relatively Low | 16th | 1.6 of 5 | 2.0 |
Perils not assessed in Hart 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 |
Model hail, wind and flood exposure for Hart 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.