STILLWATER HYDRO STATION
OperatingHydro power plant
- Capacity
- 2 MW
- Primary fuel
- Hydro
- County
- Penobscot County
- Operator
- BLACK BEAR HYDRO PARTNERS LLC
- Status
- Operating
- Commissioned
- 1913
- EIA plant ID
- 1478
- Coordinates
- 44.9095, -68.6828
STILLWATER HYDRO STATION, a 2 MW Hydro power plant in Penobscot County, Maine. Operated by BLACK BEAR HYDRO PARTNERS LLC, commissioned 1913.
Weather peril exposure
STILLWATER HYDRO STATION is a 2 MW hydro power plant in Penobscot County, ME, operated by BLACK BEAR HYDRO PARTNERS LLC, commissioned in 1913. Penobscot County carries moderate modeled catastrophe exposure in the FEMA National Risk Index, scoring 2.1 of 5 at the 28th national percentile. Winter weather is the leading peril, rated Very High by FEMA at the 95th 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.
Penobscot County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Winter weather | Very High | 95th | 4.8 of 5 | 25.8 |
| Ice storm | Very High | 90th | 4.6 of 5 | 0.55 |
| Hurricane | Relatively Moderate | 80th | 4.2 of 5 | 0.07 |
| Coastal flooding | Very Low | 66th | 3.6 of 5 | 10.6 |
| Earthquake | Relatively Low | 59th | 3.4 of 5 | <0.01 |
| Lightning | Relatively High | 53rd | 3.1 of 5 | 15.7 |
| Riverine flooding | Relatively Moderate | 34th | 2.3 of 5 | 2.0 |
| Hail | Relatively Low | 27th | 2.1 of 5 | 0.45 |
| Tornado | Relatively Low | 10th | 1.4 of 5 | 0.11 |
| Heat wave | Very Low | 3rd | 1.1 of 5 | 1.1 |
| Strong wind | Relatively Moderate | 2nd | 1.1 of 5 | 0.90 |
| Wildfire | Very Low | 1st | 1.1 of 5 | <0.01 |
Model hail, wind and flood exposure for Penobscot 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.