Compare power plants

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

Metric	Limerick Montgomery County	Beaver Valley Beaver County
Capacity	2,277 MW	1,846.8 MW
Technology	Nuclear	Nuclear
Operator	Constellation Nuclear	Energy Harbor Nuclear Generation LLC
Operating units	2	2
Latest 12-month generation	19.36 TWh	14.52 TWh
Latest complete-year capacity factor	97.5% (2025)	93.2% (2025)
National technology rank	#19 of 54	#29 of 54
Latest EIA report	2026-06	2026-06

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.

Compare power plants

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

Metric	Limerick Montgomery County	Beaver Valley Beaver County
Capacity	2,277 MW	1,846.8 MW
Technology	Nuclear	Nuclear
Operator	Constellation Nuclear	Energy Harbor Nuclear Generation LLC
Operating units	2	2
Latest 12-month generation	19.36 TWh	14.52 TWh
Latest complete-year capacity factor	97.5% (2025)	93.2% (2025)
National technology rank	#19 of 54	#29 of 54
Latest EIA report	2026-06	2026-06

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.