SUNNYSIDE COGEN ASSOCIATES
OperatingCoal power plant
- Capacity
- 58 MW
- Primary fuel
- Coal
- County
- Carbon County
- Operator
- SUNNYSIDE COGENERATION ASSOC
- Status
- Operating
- Commissioned
- 1993
- EIA plant ID
- 50951
- Generators
- 1
- Technology
- Conventional Steam Coal
- Net generation (2024)
- 335 GWh
- Capacity factor (2024, EIA nameplate)
- 66%
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 39.5463, -110.3911
SUNNYSIDE COGEN ASSOCIATES, a 58 MW Coal power plant in Carbon County, Utah. Operated by SUNNYSIDE COGENERATION ASSOC, commissioned 1993.
How SUNNYSIDE COGEN ASSOCIATES compares
With 58 MW of capacity, SUNNYSIDE COGEN ASSOCIATES ranks 14th among the 61 operating power plants Bywatts maps in Utah and is the smallest of the 5 operating Coal plants in the state. It accounts for about 1.2% of Utah's operating Coal capacity and 0.8% of all operating capacity in the state. Nationally it is the 260th-largest of the 324 operating Coal plants in the database. Commissioned in 1993, it is newer than 59% of the 61 operating Utah plants with a recorded commissioning year.
EIA-860 lists 1 generator at the site with 58 MW of nameplate capacity, all conventional steam coal technology. Net generation was 335 GWh in 2024 (a 66% capacity factor), down 17% from 2022.
Grid neighborhood
The nearest named substation is COLUMBIA (138 kV), about 1.8 miles away; the closest transmission line found within 10 miles is a 138 kV line owned by PACIFICORP, under 0.1 miles away.
Computed by Bywatts from HIFLD power plant, substation and transmission line records and EIA-860/923 survey data; distances are straight-line. Sources and methodology
Weather peril exposure
SUNNYSIDE COGEN ASSOCIATES is a 58 MW coal power plant in Carbon County, UT, operated by SUNNYSIDE COGENERATION ASSOC, commissioned in 1993. Carbon County carries low modeled catastrophe exposure in the FEMA National Risk Index, scoring 1.1 of 5 at the 2nd national percentile. Earthquake is the leading peril, rated Relatively Low by FEMA at the 85th percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to a coal plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Carbon County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Earthquake | Relatively Low | 85th | 4.4 of 5 | <0.01 |
| Wildfire | Relatively Low | 74th | 4.0 of 5 | <0.01 |
| Winter weather | Relatively Moderate | 70th | 3.8 of 5 | 28.3 |
| Heat wave | Very Low | 41st | 2.6 of 5 | 0.42 |
| Riverine flooding | Very Low | 38th | 2.5 of 5 | 0.61 |
| Ice storm | Very Low | 19th | 1.8 of 5 | 0.01 |
| Lightning | Relatively Moderate | 18th | 1.7 of 5 | 51.7 |
| Hail | Very Low | 14th | 1.6 of 5 | 0.14 |
| Tornado | Very Low | 14th | 1.6 of 5 | 0.05 |
| Strong wind | Very Low | 12th | 1.5 of 5 | 0.21 |
Perils not assessed in Carbon 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 Carbon 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.