Chalk Point Power
Chalk Point Power is a natural gas plant in Prince Georges County, Maryland, operated by Chalk Point Power, LLC. It ranks second by nameplate capacity among Maryland’s 236 power plants. It is the biggest of Maryland’s 16 natural gas plants. Its oldest working unit dates from 1967, the second-earliest start among Maryland’s 16 natural gas plants. Its biggest unit, rated at 659 MW, is the third-largest single generator in Maryland.
Nameplate capacity, 2025
1,825 MW
1,614 MW net summer capacity
8 operable units
- Gas steam turbine1,318 MW72%
- Gas combustion turbine456 MW25%
- Oil-fired51 MW2.8%
Unit by unit, 1967 to 2025
operating in 2025bar height follows unit size
Unit GT1 Oil-fired, 16 MW, 1967
Unit GT2 Oil-fired, 35 MW, 1974
Unit 3 Gas steam turbine, 659 MW, 1975
Unit 4 Gas steam turbine, 659 MW, 1981
Unit GT3 Gas combustion turbine, 103 MW, 1991
Unit GT4 Gas combustion turbine, 103 MW, 1991
Unit GT5 Gas combustion turbine, 125 MW, 1991
Unit GT6 Gas combustion turbine, 125 MW, 1991
Among Maryland’s plants
Largest plants in the state by nameplate capacity, with the plants ranked next to this one.
- 1Calvert Cliffs Nuclear Power Plant1,850 MW
- 2Chalk Point Powerthis plant
- 3Brandon Shores1,370 MW
- 4Wildcat Point Generation Facility1,114 MW
Other rankings
- All US power plants
- 91st of 14,286
- US natural gas plants
- 28th of 1,961
- Plants in the PJM Interconnection balancing area
- 23rd of 2,049
Operable units
Four units can switch between natural gas and oil.
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| GT1 | Oil-fired | 16 MW | 18 MW | 1967 | Operating |
| GT2 | Oil-fired | 35 MW | 26 MW | 1974 | Operating |
| 3 | Gas steam turbine | 659 MW | 595 MW | 1975 | Operating |
| 4 | Gas steam turbine | 659 MW | 585 MW | 1981 | Operating |
| GT3 | Gas combustion turbine | 103 MW | 86 MW | 1991 | Operating |
| GT4 | Gas combustion turbine | 103 MW | 86 MW | 1991 | Operating |
| GT5 | Gas combustion turbine | 125 MW | 109 MW | 1991 | Operating |
| GT6 | Gas combustion turbine | 125 MW | 109 MW | 1991 | Operating |
Grid and site
- Balancing area
- PJM Interconnection
- Reliability region
- ReliabilityFirst
- Highest grid connection voltage
- 230 kV
- Water source
- Patuxent River
- Nearest town on record
- Aquasco
- Operator type
- Independent producer
- Coordinates
- 38.544°N, 76.686°W
Closest plants
| Plant | Runs on | Capacity | Distance |
|---|---|---|---|
| NRG Chalk Point CT | Oil and petroleum | 94 MW | 0.0 mi north |
| Herbert Farm Solar | Solar | 5.5 MW | 6.1 mi west |
| Rockfish Solar LLC | Solar | 10.3 MW | 10.7 mi west |
| Chesapeake Beach BESS | Battery storage | 1.1 MW | 11.1 mi northeast |
| CPV St Charles Energy Center | Natural gas | 775 MW | 11.2 mi west |
| Hall Property | Solar | 2 MW | 11.8 mi north |
| Key | Natural gas | 831 MW | 12.9 mi northwest |
| Brandywine Power Facility | Natural gas | 289 MW | 13.0 mi northwest |