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556 MW Natural Gas operating in Allegheny, PA — PJM Interconnection, LLC
556 MW
Nameplate Capacity
3
Generators
units
Natural Gas Fired Combined Cycle
Technology
2003
Operating Since
Coordinates
40.5453, -79.7686
County
Allegheny, PA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Springdale Energy LLC | Springdale Energy | — |
| Owner(s) | Springdale Energy LLC | LS Power Development | — |
| Status | Operating | — | — |
Allegheny Energy Units 3 4 & 5 is a 556 MW natural gas-fired combined cycle power plant located in Allegheny County, Pennsylvania. The plant began operating in 2003 and consists of three generators. It is owned by LS Power Development and operated by Springdale Energy LLC. The plant is interconnected to the PJM Interconnection, LLC balancing authority within the RFC NERC region.
In the most recent year with available data, Allegheny Energy Units 3 4 & 5 generated 4,408,048 MWh of electricity, achieving a capacity factor of 90.4%. The plant ranks as the 25th largest in Pennsylvania out of 35 plants, and 444th nationally out of 945 plants.
Generated from EIA, GEM, and public data sources
ISO/RTO
PJM
Market
ISO/RTO Member
NERC Region
RFC
Balancing Authority
PJM Interconnection, LLC (PJM)
Grid Voltage
138.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
396.7K MWh
Latest Month
4.4M MWh
Annual Generation
90.4%
Capacity Factor
CO₂ Intensity
750 lb/MWh
NOx
0.051 lb/MWh
SO₂
0.004 lb/MWh
CH₄
0.015 lb/MWh
N₂O
0.002 lb/MWh
Capacity Factor
92.0%
Annual Net Gen
4480 GWh
CO₂eq
750 lb/MWh
Subregion
RFC West
2013
$965/kW
Est. Construction Cost
Total estimated cost: $536.6M
Market Position
ISO/RTO Market
PJM
LMP Node
SPRINGDA13 KV AES 1
Pricing Hub
WESTERN HUB
Location Type
Generation Node
Node Source
Curated node match
Last updated 2026-04-09
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