Allegheny Energy Units 3 4 & 5
Allegheny Energy Units 3 4 & 5 is a 556 MW natural gas power plant in Allegheny County, Pennsylvania, operated by Springdale Energy LLC. EIA-860M lists 3 generating units here, inside PJM. Its units entered service in 2003.
As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m
- Nameplate capacity
- 556 MW
- 562.6 MW net summer
- Generating units
- 3
- In service
- 2003
- EIA plant ID
- 55710
Where it is
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- County
- Allegheny County, Pennsylvania
- Coordinates
- 40.5453, -79.7686
- Balancing authority
- PJM
- Sector
- IPP Non-CHP
Units, technology and status
- Operator of record
- Springdale Energy LLC
- Primary energy source
- Natural gas
- Technologies
- Natural Gas Fired Combined Cycle
- Status
- Operating
Allegheny Energy Units 3 4 & 5: FAQ
- Where is Allegheny Energy Units 3 4 & 5?
- In Allegheny County, Pennsylvania (PA). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.
- How big is Allegheny Energy Units 3 4 & 5?
- 556 MW of nameplate capacity across 3 units, as of the EIA-860M release for 2026-07.
- Who owns Allegheny Energy Units 3 4 & 5?
- EIA-860M names Springdale Energy LLC as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.
- Is this the same as Allegheny Energy Units 3 4 & 5 LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Springdale Energy LLC here — not the project company that holds the asset. Project companies are commonly registered as an LLC carrying the plant's name, so a search for "Allegheny Energy Units 3 4 & 5 LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is Allegheny Energy Units 3 4 & 5 still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.