Limerick
Limerick is a nuclear plant in Montgomery County, Pennsylvania, operated by Constellation Nuclear. It ranks third by nameplate capacity among Pennsylvania’s 273 power plants. Its biggest unit, rated at 1,138 MW, is the third-largest single generator in Pennsylvania.
Nameplate capacity, 2025
2,277 MW
2,242 MW net summer capacity
2 operable units
- Nuclear2,277 MW100%
Unit by unit, 1986 to 2025
operating in 2025bar height follows unit size
Unit 1 Nuclear, 1,138 MW, 1986
Unit 2 Nuclear, 1,138 MW, 1990
Among Pennsylvania’s plants
Largest plants in the state by nameplate capacity, with the plants ranked next to this one.
- 1Peach Bottom2,876 MW
- 2TalenEnergy Susquehanna2,532 MW
- 3Limerickthis plant
- 4Conemaugh1,963 MW
- 5Keystone1,883 MW
Other rankings
- All US power plants
- 52nd of 14,286
- US nuclear plants
- 20th of 56
- Nuclear plants in Pennsylvania
- 3rd of 5
- Plants in the PJM Interconnection balancing area
- 12th of 2,049
- Plants run by Constellation Nuclear
- 5th of 13
Operable units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Nuclear | 1,138 MW | 1,120 MW | 1986 | Operating |
| 2 | Nuclear | 1,138 MW | 1,122 MW | 1990 | Operating |
Grid and site
- Balancing area
- PJM Interconnection
- Reliability region
- ReliabilityFirst
- Highest grid connection voltage
- 500 kV
- Water source
- Schuylkill & Delaware Rivers
- Nearest town on record
- Sanatoga
- Operator type
- Independent producer
- Coordinates
- 40.224°N, 75.587°W
Closest plants
| Plant | Runs on | Capacity | Distance |
|---|---|---|---|
| Moser Generating Station | Oil and petroleum | 63.6 MW | 1.8 mi northwest |
| Pickering Solar | Solar | 1.5 MW | 8.9 mi southeast |
| Birdsboro Power | Natural gas | 525 MW | 11.6 mi west |
| Pioneer Crossing Energy, LLC | Biomass and waste | 8 MW | 12.6 mi west |
| West Point (PA) | Natural gas | 90.6 MW | 15.2 mi east |
| Morgantown Solar Park | Solar | 2 MW | 15.5 mi west |
| Merck - Upper Gwynedd Solar Array | Solar | 1.5 MW | 16.1 mi east |
| Hatfield PA BTM | Oil and petroleum | 2.7 MW | 16.1 mi east |