Mountain
Other power plant · Cumberland County, Pennsylvania
Details
- Primary fuel
- Other
- Technology
- Petroleum Liquids
- Operator
- Mountain Power, LLC
- County
- Cumberland County
- Generating units
- 2
- Share of state capacity
- 0.10%
- Rank among other plants in Pennsylvania
- #11 of 58
- EIA plant code
- 3111
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Petroleum Liquids | 27 MW | 20 MW | 1972 | Operating |
| 2 | Petroleum Liquids | 27 MW | 21 MW | 1972 | Operating |
Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.
Similarly sized plants in Pennsylvania
| Chester Generating Station | Other | 56 MW |
| Johnsonburg Mill | Other | 54 MW |
| Tolna | Other | 54 MW |
| Wheelabrator Falls | Other | 53 MW |
About this data
From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 54 MW solar plant and a 54 MW nuclear plant have the same entry here and produce very different amounts of electricity.
“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All Pennsylvania power plants · What Pennsylvania actually generates