Mon Valley Works
Natural gas power plant · Allegheny County, Pennsylvania
Details
- Primary fuel
- Natural gas
- Technology
- Other Gases
- Operator
- United States Steel-Mon Valley
- County
- Allegheny County
- Generating units
- 3
- Share of state capacity
- 0.10%
- Rank among natural gas plants in Pennsylvania
- #44 of 72
- EIA plant code
- 50732
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| GEN1 | Other Gases | 25 MW | 30 MW | 1943 | Operating |
| GEN2 | Other Gases | 25 MW | 30 MW | 1943 | Operating |
| GEN3 | Other Gases | 2.5 MW | 1.9 MW | 2002 | 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
| Warren | Natural gas | 53 MW |
| Sunbury Generation LP | Other | 53 MW |
| Stony Creek Wind Farm LLC | Wind | 53 MW |
| Lake Lynn Hydro Station | Hydro | 51 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 53 MW solar plant and a 53 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