Johnsonburg Mill
Other power plant · Elk County, Pennsylvania
Nameplate capacity
54 MW
Rank in Pennsylvania
#90
of 273 plants
In service since
1993
February 1993
Details
- Primary fuel
- Other
- Technology
- Wood/Wood Waste Biomass
- Operator
- Domtar LLC
- County
- Elk County
- Generating units
- 1
- Share of state capacity
- 0.10%
- Rank among other plants in Pennsylvania
- #10 of 58
- EIA plant code
- 54638
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| PT1 | Wood/Wood Waste Biomass | 54 MW | 49 MW | 1993 | 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
| Ebensburg Power | Coal | 58 MW |
| Chester Generating Station | Other | 56 MW |
| Mountain | Other | 54 MW |
| Tolna | Other | 54 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