Power plants operated by Constellation Power, Inc
Constellation Power, Inc operates 17 power plants in the 2025 EIA-860 data, with 7,734 MW of nameplate capacity, the 32nd-largest fleet among the 5,826 operators on file. They are spread over four states: Pennsylvania, Texas, Massachusetts and Maryland. Natural gas is 62% of the capacity; the largest site is Handley. Its oldest working unit dates from 1928, at Conowingo.
- Natural gas4,822 MW62%
- Oil and petroleum1,309 MW17%
- Pumped-storage hydro1,072 MW14%
- Hydroelectric531 MW6.9%
Capacity by decade it came online
Natural gasOil and petroleumHydroelectricPumped-storage hydro
Above the line: capacity operating in 2025. Below: capacity retired at these plants.
Plants
| Plant | State | Runs on | Capacity | First unit |
|---|---|---|---|---|
| Handley | Texas | Natural gas | 1,315 MW | 1963 |
| Wolf Hollow II | Texas | Natural gas | 1,231 MW | 2017 |
| Colorado Bend II | Texas | Natural gas | 1,230 MW | 2017 |
| Muddy Run | Pennsylvania | Pumped-storage hydro | 1,072 MW | 1967 |
| Eddystone Generating Station | Pennsylvania | Natural gas | 862 MW | 1967 |
| Croydon CT Generating Station | Pennsylvania | Oil and petroleum | 546 MW | 1974 |
| Conowingo | Maryland | Hydroelectric | 531 MW | 1928 |
| Exelon West Medway II LLC | Massachusetts | Natural gas | 264 MW | 2019 |
| Exelon Medway LLC | Massachusetts | Oil and petroleum | 135 MW | 1970 |
| Richmond Generating Station | Pennsylvania | Oil and petroleum | 132 MW | 1973 |
| Delaware Generating Station | Pennsylvania | Oil and petroleum | 77 MW | 1969 |
| Southwark | Pennsylvania | Oil and petroleum | 74.4 MW | 1967 |
| Falls | Pennsylvania | Oil and petroleum | 63.6 MW | 1970 |
| Moser Generating Station | Pennsylvania | Oil and petroleum | 63.6 MW | 1970 |
| Chester Generating Station | Pennsylvania | Oil and petroleum | 55.8 MW | 1969 |
| Exelon Framingham LLC | Massachusetts | Oil and petroleum | 42.6 MW | 1969 |
| Schuylkill Generating Station | Pennsylvania | Oil and petroleum | 39.8 MW | 1969 |