CO-GEN LLC
OperatingBiomass power plant
- Capacity
- 8 MW
- Primary fuel
- Biomass
- County
- Grant County
- Operator
- CO-GENERATION CO
- Status
- Operating
- Commissioned
- 1986
- EIA plant ID
- 50921
- Coordinates
- 44.4589, -118.7187
CO-GEN LLC, an 8 MW Biomass power plant in Grant County, Oregon. Operated by CO-GENERATION CO, commissioned 1986.
Weather peril exposure
CO-GEN LLC is an 8 MW biomass power plant in Grant County, OR, operated by CO-GENERATION CO, commissioned in 1986. Grant County carries moderate modeled catastrophe exposure in the FEMA National Risk Index, scoring 1.9 of 5 at the 23rd national percentile. Riverine flooding is the leading peril, rated Relatively Low by FEMA at the 96th percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to a biomass plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Grant County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Riverine flooding | Relatively Low | 96th | 4.8 of 5 | 0.36 |
| Wildfire | Relatively Moderate | 96th | 4.8 of 5 | <0.01 |
| Heat wave | Very Low | 60th | 3.4 of 5 | 2.9 |
| Lightning | Relatively Moderate | 41st | 2.7 of 5 | 19.7 |
| Earthquake | Very Low | 30th | 2.2 of 5 | <0.01 |
| Hail | Very Low | 28th | 2.1 of 5 | 0.21 |
| Ice storm | Very Low | 21st | 1.8 of 5 | 0.01 |
| Winter weather | Relatively Low | 10th | 1.4 of 5 | 14.8 |
| Strong wind | Very Low | 3rd | 1.1 of 5 | 0.08 |
| Tornado | Very Low | 3rd | 1.1 of 5 | 0.07 |
Perils not assessed in Grant 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 Grant 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.