Johnsonburg Mill
Elk County, Pennsylvania · EIA plant ID 54638 · Operator: Domtar LLC
Nameplate54MWSummer 49 MW
Generators1in service
Net generation145GWh12 mo to Dec 2025
Capacity factor18%other units, summer MW
Heat rate6,268Btu/kWhfossil units, electric fuel, HHV
First online1993
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), other units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 244.4 | 25.9% | 10,327 |
| 2002 | 286.4 | 44.4% | 20,130 |
| 2003 | 279.5 | 36.6% | 19,983 |
| 2004 | 276 | 35.6% | 8,935 |
| 2005 | 312 | 40.2% | 8,935 |
| 2006 | 308.2 | 40.0% | 9,212 |
| 2007 | 172.4 | 20.9% | 9,212 |
| 2008 | 242.9 | 29.7% | 9,212 |
| 2009 | 289.2 | 37.2% | 10,519 |
| 2010 | 283.8 | 36.9% | 10,217 |
| 2011 | 242.2 | 32.6% | 10,421 |
| 2012 | 257.5 | 36.2% | 10,710 |
| 2013 | 119.5 | 15.9% | 10,537 |
| 2014 | 280.7 | 35.8% | 10,480 |
| 2015 | 244.7 | 31.9% | 10,583 |
| 2016 | 219.2 | 30.4% | 6,274 |
| 2017 | 243.5 | 29.9% | 6,153 |
| 2018 | 271.5 | 33.5% | 6,052 |
| 2019 | 88.9 | 10.8% | 6,109 |
| 2020 | 225 | 29.6% | 6,142 |
| 2021 | 205.5 | 27.8% | 6,222 |
| 2022 | 148.4 | 19.6% | 6,195 |
| 2023 | 65.1 | 8.3% | 6,185 |
| 2024 | 40.6 | 5.0% | 6,104 |
| 2025 | 145 | 17.9% | 6,268 |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| PT1 | Wood/Wood Waste Biomass | ST | 54 | 49 | Feb 1993 | Operating | — | coming soon |
Owner / operator
Operator: Domtar LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Domtar LLC | 100.0% | 54 MW |
Nearby plants
Within 80 km.
| Jones - PA 0429 (Rhodes South) | — | 8.3 km |
| Jones - PA 0399 (Rhodes) | — | 8.3 km |
| Wetmore - PA 0187 (Chittester) | — | 20.1 km |
| Clermont Solar | — | 20.4 km |
| Buckingham - PA 0151 (Crea) | — | 46.7 km |
| Seneca Generation LLC | 438 MW | 47.4 km |