Orchard Park
Franklin County, Pennsylvania · EIA plant ID 55997 · Operator: Borough of Chambersburg
Nameplate24MWSummer 23 MW
Generators4in service
Net generation48GWh12 mo to Aug 2026
Capacity factor24%gas/coal/oil units, summer MW
Heat rate9,725Btu/kWhfossil units, electric fuel, HHV
First online2003Runs as peaking
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
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), gas/coal/oil 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) |
|---|---|---|---|
| 2003 | 0.9 | 5.4% | 11,007 |
| 2004 | 23.7 | 12.0% | 8,852 |
| 2005 | 34.4 | 17.5% | 8,902 |
| 2006 | 13 | 6.7% | 9,017 |
| 2007 | 20.6 | 10.5% | 9,383 |
| 2008 | 19.6 | 9.9% | 8,876 |
| 2009 | 5 | 2.5% | 8,874 |
| 2010 | 11.9 | 5.8% | 9,217 |
| 2011 | 4 | 2.0% | 9,802 |
| 2012 | 2.4 | 1.2% | 8,700 |
| 2013 | 3 | 1.5% | 8,239 |
| 2014 | 8 | 3.9% | 9,026 |
| 2015 | 3.6 | 1.8% | 9,106 |
| 2016 | 12.1 | 5.9% | 9,131 |
| 2017 | 5.9 | 2.9% | 9,301 |
| 2018 | 7 | 3.5% | 8,896 |
| 2019 | 3.3 | 1.6% | 9,056 |
| 2020 | 4.1 | 2.0% | 9,072 |
| 2021 | 11.8 | 5.8% | 9,174 |
| 2022 | 33.8 | 16.6% | 9,251 |
| 2023 | 16.2 | 8.0% | 9,043 |
| 2024 | 25.5 | 12.5% | 9,072 |
| 2025 | 49.8 | 24.5% | 9,593 |
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 |
|---|---|---|---|---|---|---|---|---|
| 10 | Natural Gas Internal Combustion Engine | IC | 6 | 5.8 | Dec 2003 | Operating | — | coming soon |
| 11 | Natural Gas Internal Combustion Engine | IC | 6 | 5.8 | Dec 2003 | Operating | — | coming soon |
| 8 | Natural Gas Internal Combustion Engine | IC | 6 | 5.8 | Dec 2003 | Operating | — | coming soon |
| 9 | Natural Gas Internal Combustion Engine | IC | 6 | 5.8 | Dec 2003 | Operating | — | coming soon |
Owner / operator
Operator: Borough of Chambersburg. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Borough of Chambersburg | 100.0% | 24 MW |
Nearby plants
Within 80 km.
| Falling Spring | 7 MW | 3.2 km |
| Allegheny Energy Units 12 & 13 | 88 MW | 5.2 km |
| Maple Ridge B | — | 7.6 km |
| Maple Ridge A | — | 7.6 km |
| Whitetail Solar 3 | 20 MW | 9.5 km |
| Blue Ridge Landfill | 6 MW | 10.6 km |