Allegheny Energy Units 3 4 & 5
Allegheny County, Pennsylvania · EIA plant ID 55710 · Operator: Springdale Energy LLC
Nameplate556MWSummer 563 MW
Generators3in service
Net generation3,746GWh12 mo to Aug 2026
Capacity factor76%gas/coal/oil units, summer MW
Heat rate7,214Btu/kWhfossil units, electric fuel, HHV
First online2003Runs as baseload
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 | 74.7 | 3.3% | 8,083 |
| 2004 | 475.2 | 10.6% | 7,552 |
| 2005 | 130.6 | 2.9% | 8,548 |
| 2006 | 188.8 | 4.2% | 8,065 |
| 2007 | 591.8 | 13.3% | 7,655 |
| 2008 | 115.7 | 2.6% | 8,556 |
| 2009 | 639.6 | 14.3% | 7,363 |
| 2010 | 696.7 | 15.6% | 7,463 |
| 2011 | 505.6 | 11.3% | 7,712 |
| 2012 | 3,108.5 | 69.5% | 7,296 |
| 2013 | 3,493.1 | 78.3% | 7,235 |
| 2014 | 3,929.6 | 88.1% | 7,264 |
| 2015 | 3,830.2 | 85.9% | 7,172 |
| 2016 | 4,402.1 | 98.5% | 7,189 |
| 2017 | 3,820 | 85.7% | 7,268 |
| 2018 | 3,893.1 | 87.3% | 7,106 |
| 2019 | 4,340.8 | 97.4% | 7,098 |
| 2020 | 4,340.7 | 97.1% | 6,921 |
| 2021 | 3,569.7 | 80.1% | 7,037 |
| 2022 | 4,405.2 | 89.4% | 6,960 |
| 2023 | 4,480.4 | 90.9% | 6,856 |
| 2024 | 4,049.6 | 81.9% | 7,016 |
| 2025 | 4,408 | 89.4% | 7,044 |
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 |
|---|---|---|---|---|---|---|---|---|
| UNT3 | Natural Gas Fired Combined Cycle | CT | 184 | 181.4 | Jul 2003 | Operating | — | coming soon |
| UNT4 | Natural Gas Fired Combined Cycle | CT | 184 | 182.5 | Jul 2003 | Operating | — | coming soon |
| UNT5 | Natural Gas Fired Combined Cycle | CA | 188 | 198.7 | Jul 2003 | Operating | — | coming soon |
Owner / operator
Operator: Springdale Energy LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Springdale Energy LLC | 100.0% | 556 MW |
Nearby plants
Within 80 km.
| Springdale 1 & 2 | 88 MW | 0.2 km |
| Cheswick Power Plant | retired | 2 km |
| CW Bill Young Hydropower Project | — | 4 km |
| Allegheny Lock and Dam 4 | — | 8.7 km |
| Ohara CSG 1 LLC | 3 MW | 10.8 km |
| PPG Monroeville Chemicals Center | 1 MW | 11.9 km |