VIENNA OPERATIONS
OperatingOil power plant
- Capacity
- 181 MW
- Primary fuel
- Oil
- County
- Dorchester County
- Operator
- NRG VIENNA OPERATIONS INC
- Status
- Operating
- Commissioned
- 1968
- EIA plant ID
- 1564
- Generators
- 2
- Technology
- Petroleum Liquids
- Net generation (2024)
- 4.6 GWh
- Capacity factor (2024, EIA nameplate)
- 0.3%
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 38.4873, -75.8204
VIENNA OPERATIONS, a 181 MW Oil power plant in Dorchester County, Maryland. Operated by NRG VIENNA OPERATIONS INC, commissioned 1968.
How VIENNA OPERATIONS compares
With 181 MW of capacity, VIENNA OPERATIONS ranks 10th among the 48 operating power plants Bywatts maps in Maryland and is the largest of the 7 operating Oil plants in the state. It accounts for about 50% of Maryland's operating Oil capacity and 1.7% of all operating capacity in the state. Nationally it is the 27th-largest of the 544 operating Oil plants in the database. Commissioned in 1968, it is older than 80% of the 46 operating Maryland plants with a recorded commissioning year.
EIA-860 lists 2 generators at the site with 181 MW of nameplate capacity, all petroleum liquids technology. Net generation was 4.6 GWh in 2024 (a 0.3% capacity factor). Its generators came online between 1968 and 1972.
Grid neighborhood
The closest transmission line found within 10 miles is a 138 kV line owned by DELMARVA POWER, under 0.1 miles away. Another 6 operating power plants totaling 52 MW sit within 25 miles; the largest is EASTON (34 MW, Oil).
Computed by Bywatts from HIFLD power plant and transmission line records and EIA-860/923 survey data; distances are straight-line. Sources and methodology
Weather peril exposure
VIENNA OPERATIONS is a 181 MW oil power plant in Dorchester County, MD, operated by NRG VIENNA OPERATIONS INC, commissioned in 1968. Dorchester County carries elevated modeled catastrophe exposure in the FEMA National Risk Index, scoring 3.2 of 5 at the 54th national percentile. Coastal flooding is the leading peril, rated Relatively High by FEMA at the 99th percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to an oil plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Dorchester County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Coastal flooding | Relatively High | 99th | 5.0 of 5 | 3.6 |
| Hurricane | Relatively Moderate | 86th | 4.4 of 5 | 0.16 |
| Wildfire | Relatively Low | 83rd | 4.3 of 5 | <0.01 |
| Strong wind | Relatively Low | 64th | 3.6 of 5 | 3.4 |
| Earthquake | Very Low | 54th | 3.2 of 5 | <0.01 |
| Ice storm | Relatively Low | 53rd | 3.1 of 5 | 0.41 |
| Lightning | Relatively Low | 51st | 3.0 of 5 | 36.8 |
| Tornado | Relatively Low | 22nd | 1.9 of 5 | 0.47 |
| Winter weather | Relatively Low | 22nd | 1.9 of 5 | 5.9 |
| Hail | Very Low | 10th | 1.4 of 5 | 1.6 |
| Riverine flooding | Very Low | 1st | 1.0 of 5 | 0.68 |
| Heat wave | Relatively Low | 0th | 1.0 of 5 | 4.2 |
Model hail, wind and flood exposure for Dorchester 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.