BYLLESBY 2
OperatingHydro power plant
- Capacity
- 22 MW
- Primary fuel
- Hydro
- County
- Carroll County
- Operator
- APPALACHIAN POWER CO
- Status
- Operating
- Commissioned
- 1912
- EIA plant ID
- 3773
- Coordinates
- 36.7861, -80.9340
BYLLESBY 2, a 22 MW Hydro power plant in Carroll County, Virginia. Operated by APPALACHIAN POWER CO, commissioned 1912.
Weather peril exposure
BYLLESBY 2 is a 22 MW hydro power plant in Carroll County, VA, operated by APPALACHIAN POWER CO, commissioned in 1912. Carroll County carries low modeled catastrophe exposure in the FEMA National Risk Index, scoring 1.6 of 5 at the 15th national percentile. Lightning is the leading peril, rated Relatively Low by FEMA at the 79th 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.
Carroll County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Lightning | Relatively Low | 79th | 4.2 of 5 | 47.9 |
| Ice storm | Relatively Low | 60th | 3.4 of 5 | 0.70 |
| Hurricane | Relatively Low | 60th | 3.4 of 5 | 0.03 |
| Wildfire | Very Low | 58th | 3.3 of 5 | <0.01 |
| Earthquake | Very Low | 46th | 2.9 of 5 | <0.01 |
| Strong wind | Relatively Low | 35th | 2.4 of 5 | 2.9 |
| Hail | Relatively Low | 29th | 2.2 of 5 | 4.5 |
| Tornado | Relatively Low | 26th | 2.0 of 5 | 0.09 |
| Riverine flooding | Relatively Low | 20th | 1.8 of 5 | 1.9 |
| Winter weather | Relatively Low | 19th | 1.8 of 5 | 10.5 |
Perils not assessed in Carroll 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 |
| Heat wave | FEMA rating is "No Rating" for this county |
Model hail, wind and flood exposure for Carroll 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.