JOHNSONVILLE
OperatingHydro power plant
- Capacity
- 4 MW
- Primary fuel
- Hydro
- County
- Rensselaer County
- Operator
- BROOKFIELD RENEWABLE ENERGY PARTNERS
- Status
- Operating
- Commissioned
- 1909
- EIA plant ID
- 2580
- Coordinates
- 42.9203, -73.5088
JOHNSONVILLE, a 4 MW Hydro power plant in Rensselaer County, New York. Operated by BROOKFIELD RENEWABLE ENERGY PARTNERS, commissioned 1909.
Weather peril exposure
JOHNSONVILLE is a 4 MW hydro power plant in Rensselaer County, NY, operated by BROOKFIELD RENEWABLE ENERGY PARTNERS, commissioned in 1909. Rensselaer County carries low modeled catastrophe exposure in the FEMA National Risk Index, scoring 1.2 of 5 at the 6th national percentile. Riverine flooding is the leading peril, rated Relatively Moderate by FEMA at the 81st 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.
Rensselaer County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Riverine flooding | Relatively Moderate | 81st | 4.2 of 5 | 2.3 |
| Hurricane | Relatively Low | 70th | 3.8 of 5 | 0.06 |
| Ice storm | Relatively Moderate | 50th | 3.0 of 5 | 0.84 |
| Winter weather | Relatively Moderate | 43rd | 2.7 of 5 | 16.9 |
| Earthquake | Relatively Low | 38th | 2.5 of 5 | <0.01 |
| Lightning | Relatively Moderate | 27th | 2.1 of 5 | 26.7 |
| Tornado | Relatively Moderate | 24th | 2.0 of 5 | 0.15 |
| Strong wind | Relatively Moderate | 16th | 1.6 of 5 | 1.4 |
| Wildfire | Very Low | 11th | 1.4 of 5 | <0.01 |
| Hail | Relatively Moderate | 8th | 1.3 of 5 | 2.9 |
| Heat wave | Relatively Low | 6th | 1.2 of 5 | 3.0 |
Perils not assessed in Rensselaer 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 "No Rating" for this county |
Model hail, wind and flood exposure for Rensselaer 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.