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Website · About · Legal · Privacy · Changelog · © 2026 Parisi Labs
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Compare power plants

Registry, engineering, and operating metrics shown on a consistent EIA basis.

MetricAllegheny Energy Units 3 4 & 5
Allegheny County
Long Ridge Energy Generation
Monroe County
Capacity556 MW521.9 MW
TechnologyNatural Gas Fired Combined CycleNatural Gas Fired Combined Cycle
OperatorSpringdale Energy LLCLong Ridge Energy Generation LLC
Operating units31
Latest 12-month generation3.79 TWh3.55 TWh
Latest complete-year capacity factor90.5% (2025)83.3% (2025)
National technology rank#283 of 538#304 of 538
Latest EIA report2026-062026-06

Generation comes from EIA-923. Capacity, unit counts, technology, and reporting relationships come from EIA-860. Incomplete reporting years are excluded from capacity-factor comparisons.