Philadlephia
Jefferson County, New York · EIA plant ID 10197 · Operator: EONY Generation Limited
Nameplate4MWSummer 3 MW
Generators1in service
Net generation9GWh12 mo to Dec 2025
Capacity factor31%hydro units, summer MW
Heat rate—thermal plants only
First online1986
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), hydro 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.
Heat rate applies to fuel-burning (thermal) units only.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 7.4 | 30.2% | — |
| 2002 | 10.5 | 35.4% | — |
| 2003 | 11.6 | 38.9% | — |
| 2004 | 9.7 | 31.4% | — |
| 2005 | 11.5 | 32.9% | — |
| 2006 | 8 | 27.1% | — |
| 2007 | 8.6 | 29.6% | — |
| 2008 | 8.6 | 29.6% | — |
| 2009 | 11 | 38.1% | — |
| 2010 | 10.8 | 37.4% | — |
| 2011 | 10.9 | 37.6% | — |
| 2012 | 8.5 | 30.2% | — |
| 2013 | 9.8 | 35.1% | — |
| 2014 | 8.3 | 28.8% | — |
| 2015 | 0.9 | 5.3% | — |
| 2016 | 6.1 | 21.8% | — |
| 2017 | 12.7 | 44.0% | — |
| 2018 | 10.2 | 35.3% | — |
| 2019 | 14.8 | 51.1% | — |
| 2020 | 6.8 | 34.9% | — |
| 2021 | 5.6 | 19.5% | — |
| 2022 | 0.7 | — | — |
| 2023 | 9.7 | 34.7% | — |
| 2024 | 10.7 | 36.9% | — |
| 2025 | 8.6 | 30.7% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| GEN1 | Conventional Hydroelectric | HY | 3.6 | 3.2 | Oct 1986 | Operating | — | coming soon |
Owner / operator
Operator: EONY Generation Limited. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| EONY Generation Limited | 100.0% | 4 MW |
Nearby plants
Within 80 km.
| Theresa Plant | 1 MW | 9.5 km |
| Deferiet | 12 MW | 13.6 km |
| ReEnergy Black River | retired | 14.5 km |
| Herrings | 5 MW | 15.9 km |
| Kamargo | 6 MW | 17.8 km |
| Carthage A | 5 MW | 18.3 km |