Allegheny Energy Units 3 4 & 5
Natural gas power plant in Allegheny County, Pennsylvania. 556 MW of nameplate capacity across 3 generators, operated by Springdale Energy LLC.
Also known as EIA plant 55710
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 556 MWNameplate
- Generators
- 3 operatingEIA-860M, August 2026
- Operating since
- July 2003First generator online
- Operator
- Springdale Energy LLCEIA operator ID 61267
- Grid
- PJMBalancing authority PJM
- Price nodes
- 3 PJM nodesResource nodes with prices
- Location
- Allegheny County, PA40.5453, −79.7686
- EIA plant ID
- 55710EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Allegheny Energy Units 3 4 & 5 produces
Free · EIA-923Net generation, 2025
4.41 TWh
4,408,048 MWh, final
Capacity factor, 2025
90.5%
2024: 82.9%
January to July 2026
1.92 TWh
Provisional
Range, 2016 to 2025
3.6–4.5
TWh a year. Low 2021, high 2023
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | Not reported | Not reported | 0 of 12 |
| 2002 | Not reported | Not reported | 0 of 12 |
| 2003 | 74,725 | Not reported | 3 of 12 |
| 2004 | 475,217 | Not reported | 12 of 12 |
| 2005 | 130,633 | Not reported | 12 of 12 |
| 2006 | 188,822 | Not reported | 12 of 12 |
| 2007 | 591,765 | Not reported | 12 of 12 |
| 2008 | 106,662 | Not reported | 7 of 12 |
| 2009 | 639,568 | Not reported | 12 of 12 |
| 2010 | 696,721 | 14.3% | 12 of 12 |
| 2011 | 505,587 | 10.4% | 12 of 12 |
| 2012 | 3,108,469 | 63.6% | 12 of 12 |
| 2013 | 3,493,134 | Not reported | 12 of 12 |
| 2014 | 2,708,385 | 82.8% | 8 of 12 |
| 2015 | 3,456,270 | 77.5% | 11 of 12 |
| 2016 | 4,402,069 | 90.1% | 12 of 12 |
| 2017 | 3,820,013 | 78.4% | 12 of 12 |
| 2018 | 3,893,141 | 79.9% | 12 of 12 |
| 2019 | 4,340,792 | 89.1% | 12 of 12 |
| 2020 | 4,340,652 | 88.9% | 12 of 12 |
| 2021 | 3,569,703 | 73.3% | 12 of 12 |
| 2022 | 4,405,161 | 90.4% | 12 of 12 |
| 2023 | 4,480,397 | 92.0% | 12 of 12 |
| 2024 | 4,049,593 | 82.9% | 12 of 12 |
| 2025 | 4,408,048 | 90.5% | 12 of 12 |
| 2026 (provisional, partial year) | 1,921,453 | 67.9% | 7 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free account · PJMEmissions
Free · EPA CAMPDCO₂, 2025
1.72M
US short tons. 2024: 1.53M
SO₂, 2025
9
US short tons
NOx, 2025
117
US short tons
CO₂ per MWh, calculated
0.39 t
About 781 lb per MWh
2 of 2 EPA units reported CO₂ in 2025 (3, 4), matched to EIA plant 55710 through the EPA–EIA crosswalk. The per-MWh rate is EPA CO₂ divided by EIA-923 net generation. The two reporting boundaries can differ.
Water use
Free · EIA-923 cooling, USGSWithdrawal, 2024
820
million gallons
Consumption, 2024
676
million gallons
Source
Allegheny River
Surface, Fresh. Induced-draft tower
Watershed stress
Very low/none · 0.140
USGS SUI, HUC12 Chartiers Run-Allegheny River
12 of 12 cooling months report withdrawal. SUI of the source river HUC12 within 3 km. Blank volumes are unreported, not zero.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| UNT3 | Natural Gas Fired Combined Cycle | 184.0 | July 2003 |
| UNT4 | Natural Gas Fired Combined Cycle | 184.0 | July 2003 |
| UNT5 | Natural Gas Fired Combined Cycle | 188.0 | July 2003 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Springdale Energy LLC as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
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Questions about Allegheny Energy Units 3 4 & 5
How much power does Allegheny Energy Units 3 4 & 5 produce?
Allegheny Energy Units 3 4 & 5 reported 4,408,048 MWh (4.41 TWh) of net generation in 2025, a 90.5% capacity factor on 556 MW of nameplate capacity. From January to July 2026 it reported 1.92 TWh, which is provisional.
Where is Allegheny Energy Units 3 4 & 5?
Allegheny Energy Units 3 4 & 5 is in Allegheny County, Pennsylvania, at 40.5453, −79.7686. It is in the PJM Interconnection, LLC balancing area (PJM).
Who operates Allegheny Energy Units 3 4 & 5?
EIA-860M for August 2026 lists Springdale Energy LLC as the operator (EIA operator ID 61267). The operator is not always the owner.
When did Allegheny Energy Units 3 4 & 5 start operating?
Its first generator began operating in July 2003, according to EIA-860M.
Does InfraMap have power prices for Allegheny Energy Units 3 4 & 5?
Yes. InfraMap has PJM day-ahead and real-time prices at 3 price nodes linked to Allegheny Energy Units 3 4 & 5, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- EPA CAMPD annual emissions through the EPA–EIA crosswalk, 1995 to 2025
- PJM day-ahead and real-time prices; node and hub assignments as of 2026-10-05
- EIA-923 cooling water 2024 and the USGS surface water supply and use index, Water years 2010-2020 (Oct 2009 to Sep 2020), mean of monthly values
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page