TREGO
OperatingHydro power plant
- Capacity
- 1 MW
- Primary fuel
- Hydro
- County
- Washburn County
- Operator
- NORTHERN STATES POWER CO - MINNESOTA
- Status
- Operating
- Commissioned
- 1927
- EIA plant ID
- 4012
- Coordinates
- 45.9479, -91.8884
TREGO, a 1 MW Hydro power plant in Washburn County, Wisconsin. Operated by NORTHERN STATES POWER CO - MINNESOTA, commissioned 1927.
Weather peril exposure
TREGO is a 1 MW hydro power plant in Washburn County, WI, operated by NORTHERN STATES POWER CO - MINNESOTA, commissioned in 1927. Washburn County carries elevated modeled catastrophe exposure in the FEMA National Risk Index, scoring 3.2 of 5 at the 55th national percentile. Heat wave is the leading peril, rated Very Low by FEMA at the 77th 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.
Washburn County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Heat wave | Very Low | 77th | 4.1 of 5 | 1.4 |
| Hail | Relatively Low | 66th | 3.6 of 5 | 2.3 |
| Lightning | Relatively Moderate | 52nd | 3.1 of 5 | 31.8 |
| Winter weather | Relatively Low | 51st | 3.1 of 5 | 18.2 |
| Strong wind | Relatively Low | 50th | 3.0 of 5 | 1.7 |
| Wildfire | Very Low | 39th | 2.5 of 5 | <0.01 |
| Tornado | Relatively Low | 38th | 2.5 of 5 | 0.23 |
| Ice storm | Very Low | 29th | 2.2 of 5 | 0.12 |
| Riverine flooding | Very Low | 29th | 2.1 of 5 | 0.14 |
| Earthquake | Very Low | 0th | 1.0 of 5 | <0.01 |
Perils not assessed in Washburn 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 |
|---|---|
| Hurricane | FEMA rating is "Not Applicable" for this county |
| Coastal flooding | FEMA rating is "Not Applicable" for this county |
Model hail, wind and flood exposure for Washburn 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.