YELLOWSTONE ENERGY LP
OperatingOil power plant
- Capacity
- 68 MW
- Primary fuel
- Oil
- County
- Yellowstone County
- Operator
- YELLOWSTONE ENERGY LP
- Status
- Operating
- Commissioned
- 1995
- EIA plant ID
- 50931
- Generators
- 1
- Technology
- Petroleum Coke
- Net generation (2024)
- 382 GWh
- Capacity factor (2024, EIA nameplate)
- 64%
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 45.8114, -108.4286
YELLOWSTONE ENERGY LP, a 68 MW Oil power plant in Yellowstone County, Montana. Operated by YELLOWSTONE ENERGY LP, commissioned 1995.
How YELLOWSTONE ENERGY LP compares
With 68 MW of capacity, YELLOWSTONE ENERGY LP ranks 17th among the 48 operating power plants Bywatts maps in Montana. It accounts for about 1.1% of all operating capacity in Montana. Nationally it is the 56th-largest of the 544 operating Oil plants in the database. Commissioned in 1995, it is older than 50% of the 46 operating Montana plants with a recorded commissioning year. It shares Yellowstone County with one other operating plant, PHILLIPS 66 BILLINGS REFINERY.
EIA-860 lists 1 generator at the site with 68 MW of nameplate capacity, all petroleum coke technology. Net generation was 382 GWh in 2024 (a 64% capacity factor), down 17% from 2022.
Grid neighborhood
The nearest named substation is BILLINGS (230 kV), about 3.6 miles away; the closest transmission line found within 10 miles is a 115 kV line owned by NORTHWESTERN ENERGY LLC - (MT), under 0.1 miles away. One other operating power plant sits within 25 miles: PHILLIPS 66 BILLINGS REFINERY (2 MW, Natural Gas). Within 50 miles are 2 mapped data centers; the nearest is iConnect Billings Fiber Hotel in Billings, about 4.6 miles away.
Computed by Bywatts from HIFLD power plant, substation and transmission line records, EIA-860/923 survey data and PeeringDB data center locations; distances are straight-line. Sources and methodology
Weather peril exposure
YELLOWSTONE ENERGY LP is a 68 MW oil power plant in Yellowstone County, MT, operated by YELLOWSTONE ENERGY LP, commissioned in 1995. Yellowstone County carries moderate modeled catastrophe exposure in the FEMA National Risk Index, scoring 2.3 of 5 at the 33rd national percentile. Winter weather is the leading peril, rated Very High by FEMA at the 92nd percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to an oil plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Yellowstone County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Winter weather | Very High | 92nd | 4.7 of 5 | 18.3 |
| Wildfire | Relatively Moderate | 88th | 4.5 of 5 | <0.01 |
| Earthquake | Relatively Low | 50th | 3.0 of 5 | <0.01 |
| Heat wave | Relatively Low | 49th | 3.0 of 5 | 2.2 |
| Hail | Relatively Moderate | 47th | 2.9 of 5 | 2.0 |
| Riverine flooding | Relatively Moderate | 37th | 2.5 of 5 | 1.0 |
| Lightning | Relatively High | 27th | 2.1 of 5 | 32.0 |
| Ice storm | Relatively Low | 17th | 1.7 of 5 | 0.01 |
| Tornado | Relatively Low | 16th | 1.6 of 5 | 0.15 |
| Strong wind | Relatively Moderate | 9th | 1.4 of 5 | 0.85 |
Perils not assessed in Yellowstone 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 Yellowstone 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.