OLD HICKORY
OperatingHydro power plant
- Capacity
- 104 MW
- Primary fuel
- Hydro
- County
- Sumner County
- Operator
- USCE-NASHVILLE DISTRICT
- Status
- Operating
- Commissioned
- 1957
- EIA plant ID
- 3426
- Coordinates
- 36.2973, -86.6556
OLD HICKORY, a 104 MW Hydro power plant in Sumner County, Tennessee. Operated by USCE-NASHVILLE DISTRICT, commissioned 1957.
Weather peril exposure
OLD HICKORY is a 104 MW hydro power plant in Sumner County, TN, operated by USCE-NASHVILLE DISTRICT, commissioned in 1957. Sumner County carries elevated modeled catastrophe exposure in the FEMA National Risk Index, scoring 3.4 of 5 at the 59th national percentile. Earthquake is the leading peril, rated Relatively Moderate by FEMA at the 85th 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.
Sumner County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Earthquake | Relatively Moderate | 85th | 4.4 of 5 | <0.01 |
| Ice storm | Relatively High | 75th | 4.0 of 5 | 0.68 |
| Riverine flooding | Relatively Moderate | 74th | 4.0 of 5 | 2.1 |
| Winter weather | Relatively High | 73rd | 3.9 of 5 | 6.2 |
| Lightning | Relatively High | 73rd | 3.9 of 5 | 57.5 |
| Tornado | Relatively High | 68th | 3.7 of 5 | 0.42 |
| Hail | Relatively Moderate | 67th | 3.7 of 5 | 3.3 |
| Heat wave | Relatively Low | 60th | 3.4 of 5 | 4.6 |
| Strong wind | Relatively High | 40th | 2.6 of 5 | 6.2 |
| Hurricane | Very Low | 15th | 1.6 of 5 | <0.01 |
| Wildfire | Very Low | 5th | 1.2 of 5 | <0.01 |
Perils not assessed in Sumner 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 Sumner 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.