Peach Bottom
Peach Bottom is a nuclear plant in York County, Pennsylvania, operated by Constellation Nuclear. By nameplate capacity it is the 15th-largest power plant in the United States and the largest in Pennsylvania. Among the 56 nuclear plants in the country it is the fifth-largest. Its biggest unit, rated at 1,499 MW, is the largest single generator in Pennsylvania.
Nameplate capacity, 2025
2,876 MW
2,549 MW net summer capacity
2 operable units
- Nuclear2,876 MW100%
Unit by unit, 1974 to 2025
operating in 2025bar height follows unit size
Unit 2 Nuclear, 1,499 MW, 1974
Unit 3 Nuclear, 1,377 MW, 1974
Among Pennsylvania’s plants
Largest plants in the state by nameplate capacity, with the plants ranked next to this one.
- 1Peach Bottomthis plant
- 2TalenEnergy Susquehanna2,532 MW
- 3Limerick2,277 MW
Other rankings
- Nuclear plants in Pennsylvania
- 1st of 5
- Plants in the PJM Interconnection balancing area
- 2nd of 2,049
- Plants run by Constellation Nuclear
- 1st of 13
Operable units
By the year its oldest working unit started, it is the oldest of Pennsylvania’s 5 nuclear plants.
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 2 | Nuclear | 1,499 MW | 1,265 MW | 1974 | Operating |
| 3 | Nuclear | 1,377 MW | 1,285 MW | 1974 | Operating |
Who owns it
Shares are weighted by the nameplate capacity of each unit an owner holds.
| Owner | Share of capacity |
|---|---|
| Public Service Elec & Gas Co | 50.0% |
| Constellation Nuclear | 50.0% |
Grid and site
- Balancing area
- PJM Interconnection
- Reliability region
- ReliabilityFirst
- Highest grid connection voltage
- 500 kV
- Water source
- Susquehanna River
- Nearest town on record
- Delta
- Operator type
- Independent producer
- Coordinates
- 39.759°N, 76.269°W
Closest plants
| Plant | Runs on | Capacity | Distance |
|---|---|---|---|
| York Energy Center | Natural gas | 1,449 MW | 2.5 mi southwest |
| Muddy Run | Pumped-storage hydro | 1,072 MW | 3.7 mi northwest |
| Holtwood | Hydroelectric | 247 MW | 5.8 mi northwest |
| Wildcat Point Generation Facility | Natural gas | 1,114 MW | 6.3 mi southeast |
| Essential Power Rock Springs LLC | Natural gas | 796 MW | 6.4 mi southeast |
| Keystone Solar | Solar | 5 MW | 7.5 mi north |
| Conowingo | Hydroelectric | 531 MW | 8.6 mi southeast |
| Safe Harbor | Hydroelectric | 418 MW | 13.1 mi northwest |