Herbert A Wagner
Herbert A Wagner is an oil-fired plant in Anne Arundel County, Maryland, operated by H.A. Wagner LLC. Among the 857 oil-fired plants in the country it is the sixth-largest. It is the biggest of Maryland’s 10 oil-fired plants. The operator has reported planned retirement dates for 774 MW of it, in 2029. Retired units here add up to 285 MW across 3 units, taken out of service between 2020 and 2025.
Nameplate capacity, 2025
774 MW
702 MW net summer capacity
2 operable units
- Oil-fired774 MW100%
Unit by unit, 1956 to 2025
operating in 2025retiredreported planned retirementbar height follows unit size
Unit 1 Oil-fired, 133 MW, 1956–2025
Unit 2 Coal steam, 136 MW, 1959–2020
Unit 3 Oil-fired, 359 MW, 1966
Unit GT1 Oil-fired, 16 MW, 1967–2025
Unit 4 Oil-fired, 415 MW, 1972
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 Power1,825 MW
- 3Brandon Shores1,370 MW
- 6Essential Power Rock Springs LLC796 MW
- 7CPV St Charles Energy Center775 MW
- 8Herbert A Wagnerthis plant
- 9Conowingo531 MW
- 10Perryman492 MW
Other rankings
- All US power plants
- 433rd of 14,286
- Power plants in Maryland
- 8th of 236
- Plants in the PJM Interconnection balancing area
- 96th of 2,049
- Biggest single unit, among Maryland’s plants
- 5th of 236
Operable units
By the year its oldest working unit started, it is the third-oldest of Maryland’s oil-fired plants.
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 3 | Oil-fired | 359 MW | 305 MW | 1966 | Operating, retirement planned for 2029 |
| 4 | Oil-fired | 415 MW | 397 MW | 1972 | Operating, retirement planned for 2029 |
Retired units
| Unit | Technology | Nameplate | In service |
|---|---|---|---|
| 2 | Coal steam | 136 MW | 1959–2020 |
| 1 | Oil-fired | 133 MW | 1956–2025 |
| GT1 | Oil-fired | 16 MW | 1967–2025 |
Grid and site
- Balancing area
- PJM Interconnection
- Reliability region
- ReliabilityFirst
- Highest grid connection voltage
- 230 kV
- Water source
- Patapsco River
- Nearest town on record
- Baltimore
- Operator type
- Independent producer
- Coordinates
- 39.178°N, 76.527°W
Closest plants
| Plant | Runs on | Capacity | Distance |
|---|---|---|---|
| Brandon Shores | Coal | 1,370 MW | 0.6 mi northwest |
| White CSG | Solar | 2 MW | 3.1 mi northeast |
| Anne Arundel County Public Schools | Solar | 1 MW | 3.2 mi southeast |
| THD Baltimore DCs - 5829 Project Lion | Solar | 3.8 MW | 3.8 mi northeast |
| THD Baltimore DC - 5830 Project Tiger | Solar | 1.6 MW | 3.9 mi northeast |
| MD - Ameresco - Glen Burnie ANEM | Solar | 2 MW | 3.9 mi west |
| Amazon Maryland DCA1 | Solar | 1.3 MW | 4.4 mi northeast |
| Cromwell | Solar | 1.8 MW | 5.6 mi west |