Allegheny Hydro No 9
Armstrong County, Pennsylvania · EIA plant ID 50898 · Operator: Allegheny Hydro LLC
Nameplate18MWSummer 18 MW
Generators2in service
Net generation86GWh12 mo to Dec 2025
Capacity factor55%hydro units, summer MW
Heat rate—thermal plants only
First online1990
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 | 83.6 | 53.6% | — |
| 2002 | 109.7 | 70.4% | — |
| 2003 | 136 | 87.2% | — |
| 2004 | 119 | 76.1% | — |
| 2005 | 99 | 63.5% | — |
| 2006 | 122.2 | 78.4% | — |
| 2007 | 79.2 | 50.8% | — |
| 2008 | 102 | 65.3% | — |
| 2009 | 116.7 | 74.9% | — |
| 2010 | 92.3 | 59.2% | — |
| 2011 | 101.2 | 64.9% | — |
| 2012 | 99.1 | 63.4% | — |
| 2013 | 112.7 | 72.3% | — |
| 2014 | 125.5 | 80.5% | — |
| 2015 | 104.6 | 67.1% | — |
| 2016 | 106.5 | 68.1% | — |
| 2017 | 100.2 | 64.3% | — |
| 2018 | 121.4 | 77.9% | — |
| 2019 | 122.3 | 78.4% | — |
| 2020 | 101.1 | 64.7% | — |
| 2021 | 98.2 | 63.0% | — |
| 2022 | 86.9 | 55.8% | — |
| 2023 | 86.7 | 55.6% | — |
| 2024 | 88.2 | 56.4% | — |
| 2025 | 86.4 | 55.4% | — |
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 | 8.9 | 8.9 | Dec 1990 | Operating | — | coming soon |
| GEN2 | Conventional Hydroelectric | HY | 8.9 | 8.9 | Dec 1990 | Operating | — | coming soon |
Owner / operator
Operator: Allegheny Hydro LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Allegheny Hydro LLC | 100.0% | 18 MW |
Nearby plants
Within 80 km.
| Allegheny Hydro No 8 | 14 MW | 8.9 km |
| Monroe - PA 0485 (Lawrence) | — | 20.9 km |
| Monroe - PA 0486 (Acey) | — | 21.4 km |
| Mahoning Creek Hydroelectric Project | 6 MW | 22.9 km |
| Kittanning - PA 0407 (Hoeter C) | — | 23.6 km |
| Kittanning - PA 0406 (Hoeter B) | — | 23.6 km |