MOUNTAIN
OperatingOil power plant
- Capacity
- 54 MW
- Primary fuel
- Oil
- County
- Cumberland County
- Operator
- NRG REMA LLC
- Status
- Operating
- Commissioned
- 1972
- EIA plant ID
- 3111
- Generators
- 2
- Technology
- Petroleum Liquids
- Net generation (2024)
- 3.6 GWh
- Capacity factor (2024, EIA nameplate)
- 0.8%
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 40.1230, -77.1723
MOUNTAIN, a 54 MW Oil power plant in Cumberland County, Pennsylvania. Operated by NRG REMA LLC, commissioned 1972.
How MOUNTAIN compares
With 54 MW of capacity, MOUNTAIN ranks 70th among the 170 operating power plants Bywatts maps in Pennsylvania and 10th of the 17 operating Oil plants in the state. It accounts for about 1.7% of Pennsylvania's operating Oil capacity and 0.1% of all operating capacity in the state. Nationally it is the 71st-largest of the 544 operating Oil plants in the database. Commissioned in 1972, it is older than 77% of the 168 operating Pennsylvania plants with a recorded commissioning year. Its operator, NRG REMA LLC, runs 9 operating plants in Pennsylvania totaling 944 MW. It shares Cumberland County with 4 other operating plants, including CUMBERLAND COUNTY PA LFG RECOVERY and PPG INDUSTRIES, INC. WORKS 6.
EIA-860 lists 2 generators at the site with 54 MW of nameplate capacity, all petroleum liquids technology. Net generation was 3.6 GWh in 2024 (a 0.8% capacity factor).
Grid neighborhood
The nearest named substation is JUNIATA (500 kV), about 21.2 miles away; the closest transmission line found within 10 miles is a 115 kV line owned by METROPOLITAN EDISON CO, under 0.1 miles away. Another 14 operating power plants totaling 2,164 MW sit within 25 miles; the largest is THREE MILE ISLAND (976 MW, Nuclear).
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
MOUNTAIN is a 54 MW oil power plant in Cumberland County, PA, operated by NRG REMA LLC, commissioned in 1972. Cumberland County carries low modeled catastrophe exposure in the FEMA National Risk Index, scoring 1.2 of 5 at the 5th national percentile. Hurricane is the leading peril, rated Relatively Moderate by FEMA at the 76th 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.
Cumberland County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Hurricane | Relatively Moderate | 76th | 4.0 of 5 | 0.07 |
| Earthquake | Relatively Low | 52nd | 3.1 of 5 | <0.01 |
| Riverine flooding | Relatively Moderate | 45th | 2.8 of 5 | 2.1 |
| Tornado | Relatively Moderate | 29th | 2.1 of 5 | 0.29 |
| Wildfire | Very Low | 18th | 1.7 of 5 | <0.01 |
| Lightning | Relatively Moderate | 13th | 1.5 of 5 | 36.6 |
| Strong wind | Relatively High | 11th | 1.4 of 5 | 5.1 |
| Ice storm | Relatively Low | 10th | 1.4 of 5 | 0.56 |
| Heat wave | Relatively Moderate | 7th | 1.3 of 5 | 4.6 |
| Winter weather | Relatively High | 5th | 1.2 of 5 | 12.2 |
| Hail | Very Low | 1st | 1.0 of 5 | 2.4 |
Perils not assessed in Cumberland 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 Cumberland 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.