HERBERT A WAGNER
OperatingCoal power plant
- Capacity
- 1,059 MW
- Primary fuel
- Coal
- County
- Anne Arundel County
- Operator
- RAVEN POWER HOLDINGS LLC
- Status
- Operating
- Commissioned
- 1956
- EIA plant ID
- 1554
- Generators
- 4
- Net generation (2024)
- 159 GWh
- Capacity factor (2024, EIA nameplate)
- 2%
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 39.1779, -76.5267
HERBERT A WAGNER, a 1,059 MW Coal power plant in Anne Arundel County, Maryland. Operated by RAVEN POWER HOLDINGS LLC, commissioned 1956.
How HERBERT A WAGNER compares
With 1,059 MW of capacity, HERBERT A WAGNER ranks 4th among the 48 operating power plants Bywatts maps in Maryland and 3rd of the 4 operating Coal plants in the state. It accounts for about 18% of Maryland's operating Coal capacity and 10% of all operating capacity in the state. Nationally it is the 111th-largest of the 324 operating Coal plants in the database. Commissioned in 1956, it is older than 89% of the 46 operating Maryland plants with a recorded commissioning year. Its operator, RAVEN POWER HOLDINGS LLC, runs 2 operating plants in Maryland totaling 2,429 MW. It shares Anne Arundel County with 2 other operating plants, BRANDON SHORES and MILLERSVILLE LFG.
Under the same EIA plant code, EIA-860 lists 4 generators at the site with 923 MW of nameplate capacity (this page's HIFLD capacity figure is 1,059 MW). Net generation was 159 GWh in 2024 (a 2% capacity factor). Its generators came online between 1956 and 1972.
Grid neighborhood
The nearest named substation is WAUGH CHAPEL (500 kV), about 12.2 miles away; the closest transmission line found within 10 miles is a 230 kV line owned by BALTIMORE GAS & ELECTRIC CO, under 0.1 miles away. Another 12 operating power plants totaling 1,952 MW sit within 25 miles; the largest is BRANDON SHORES (1,370 MW, Coal). Within 50 miles are 6 mapped data centers; the nearest is Lumen Baltimore in Baltimore, about 9.3 miles away.
Computed by Bywatts from HIFLD power plant, substation and transmission line records, EIA-860/923 survey data and PeeringDB data center locations; distances are straight-line. Sources and methodology
Weather peril exposure
HERBERT A WAGNER is a 1,059 MW coal power plant in Anne Arundel County, MD, operated by RAVEN POWER HOLDINGS LLC, commissioned in 1956. Anne Arundel County carries moderate modeled catastrophe exposure in the FEMA National Risk Index, scoring 2.0 of 5 at the 26th national percentile. Coastal flooding is the leading peril, rated Relatively Moderate by FEMA at the 82nd percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to a coal plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Anne Arundel County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Coastal flooding | Relatively Moderate | 82nd | 4.3 of 5 | 3.7 |
| Hurricane | Relatively Moderate | 74th | 4.0 of 5 | 0.09 |
| Earthquake | Relatively Low | 51st | 3.1 of 5 | <0.01 |
| Hail | Relatively Moderate | 34th | 2.4 of 5 | 3.4 |
| Lightning | Relatively High | 28th | 2.1 of 5 | 39.9 |
| Ice storm | Relatively Moderate | 27th | 2.1 of 5 | 0.43 |
| Winter weather | Relatively High | 27th | 2.1 of 5 | 9.5 |
| Strong wind | Relatively High | 25th | 2.0 of 5 | 7.7 |
| Tornado | Relatively Moderate | 19th | 1.8 of 5 | 0.43 |
| Wildfire | Very Low | 18th | 1.7 of 5 | <0.01 |
| Heat wave | Relatively Moderate | 7th | 1.3 of 5 | 6.3 |
| Riverine flooding | Relatively Moderate | 1st | 1.1 of 5 | 3.6 |
Model hail, wind and flood exposure for Anne Arundel County in the weather risk calculator
Ratings are the FEMA National Risk Index county hazard ratings; the peril score is a Bywatts transform of the FEMA national percentile. Full data sources and the solar vulnerability methodology are in the weather risk calculator.
Modeled estimate for screening and negotiation. Built from FEMA National Risk Index county hazard data and a solar vulnerability layer documented above. Not a quote, a binder, or actuarial advice, and not a substitute for a carrier's own model. Hazard data: FEMA National Risk Index December 2025, synced 2026-07-24. Resolution is county level, not site level.