WYMAN HYDRO
OperatingHydro power plant
- Capacity
- 72 MW
- Primary fuel
- Hydro
- County
- Somerset County
- Operator
- BROOKFIELD WHITE PINE HYDRO LLC
- Status
- Operating
- Commissioned
- 1930
- EIA plant ID
- 1511
- Generators
- 3
- Technology
- Conventional Hydroelectric
- Net generation (2024)
- 337 GWh
- Capacity factor (2024, EIA nameplate)
- 53%
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 45.0699, -69.9058
WYMAN HYDRO, a 72 MW Hydro power plant in Somerset County, Maine. Operated by BROOKFIELD WHITE PINE HYDRO LLC, commissioned 1930.
How WYMAN HYDRO compares
With 72 MW of capacity, WYMAN HYDRO ranks 11th among the 83 operating power plants Bywatts maps in Maine and 3rd of the 44 operating Hydro plants in the state. It accounts for about 11% of Maine's operating Hydro capacity and 1.7% of all operating capacity in the state. Nationally it is the 228th-largest of the 1,243 operating Hydro plants in the database. Commissioned in 1930, it is older than 74% of the 81 operating Maine plants with a recorded commissioning year. Its operator, BROOKFIELD WHITE PINE HYDRO LLC, runs 16 operating plants in Maine totaling 314 MW. It shares Somerset County with 8 other operating plants, including HARRIS and ANSON ABENAKI HYDROS.
EIA-860 lists 3 generators at the site with 72 MW of nameplate capacity, all conventional hydroelectric technology. Net generation was 337 GWh in 2024 (a 53% capacity factor), down 12% from 2022. Its generators came online between 1930 and 1940.
Grid neighborhood
The closest transmission line found within 10 miles is a 115 kV line owned by CENTRAL MAINE POWER CO, under 0.1 miles away. Another 4 operating power plants totaling 60 MW sit within 25 miles; the largest is ANSON ABENAKI HYDROS (32 MW, Oil).
Computed by Bywatts from HIFLD power plant and transmission line records and EIA-860/923 survey data; distances are straight-line. Sources and methodology
Weather peril exposure
WYMAN HYDRO is a 72 MW hydro power plant in Somerset County, ME, operated by BROOKFIELD WHITE PINE HYDRO LLC, commissioned in 1930. Somerset County carries moderate modeled catastrophe exposure in the FEMA National Risk Index, scoring 2.5 of 5 at the 38th national percentile. Ice storm is the leading peril, rated Relatively High by FEMA at the 91st 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.
Somerset County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Ice storm | Relatively High | 91st | 4.6 of 5 | 0.27 |
| Hurricane | Relatively Moderate | 86th | 4.4 of 5 | 0.08 |
| Lightning | Relatively High | 77th | 4.1 of 5 | 17.8 |
| Winter weather | Relatively High | 71st | 3.8 of 5 | 25.4 |
| Earthquake | Very Low | 53rd | 3.1 of 5 | <0.01 |
| Riverine flooding | Relatively Low | 41st | 2.7 of 5 | 4.1 |
| Hail | Relatively Low | 33rd | 2.3 of 5 | 0.40 |
| Tornado | Very Low | 5th | 1.2 of 5 | 0.09 |
| Heat wave | Very Low | 3rd | 1.1 of 5 | 0.39 |
| Strong wind | Relatively Low | 1st | 1.1 of 5 | 0.46 |
| Wildfire | Very Low | 1st | 1.1 of 5 | <0.01 |
Perils not assessed in Somerset 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 Somerset 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.