Vienna Operations — Plant Summary
- EIA Plant ID
- 1564
- Capacity
- 180.6 MW
- Primary Fuel
- RFO
- Technology
- Petroleum Liquids
- Status
- Operating
- Location
- Dorchester, MD
- Operating Since
- 1968
- Generators
- 2
- Operator
- NRG Vienna Operations Inc
- Parent Company
- NRG Energy
- Annual Generation
- 6,784.6 MWh
- Capacity Factor
- 0.4%
- Balancing Authority
- PJM Interconnection, LLC
- ISO/RTO
- PJM
- NERC Region
- RFC
Vienna Operations
OperatingDistillate OilResidual Oil
Ranked #1 of 1 Residual Oil plants in MD#10 of 13 nationally
180.6 MW Residual Oil operating in Dorchester, MD — PJM Interconnection, LLC
EIAWD
180.6 MW
Nameplate Capacity
2
Generators
units
Petroleum Liquids
Technology
1968
Operating Since
Location
Coordinates
38.4878, -75.8208
County
Dorchester, MD
Nearby Plants
- Porter Mill SolarSolar46 MW · 12.9 km
- Todd SolarSolar20 MW · 14.1 km
- Wor-Wic Community College - OffsiteSolar2 MW · 14.2 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | NRG Vienna Operations Inc | Vienna Power | — |
| Owner(s) | Vienna Power LLC | NRG Energy | — |
| Status | Operating | — | — |
Ownership Chain
About
The Vienna Generating Station is a 167 MW oil-fired electric generating plant owned by NRG Energy, located in Vienna, Maryland.
Read more on WikipediaVienna Operations is a 180.6 MW power plant located in Dorchester County, Maryland. The plant began operating in 1968 and is owned by NRG Energy, with NRG Vienna Operations Inc. listed as the EIA operator. The facility utilizes petroleum liquids (DFO) as its primary fuel source and consists of two generators employing this technology. Vienna Operations operates within the PJM Interconnection, LLC balancing authority and the RFC NERC region.
In the most recent year with available data, Vienna Operations generated 6,785 MWh of electricity, resulting in a capacity factor of 0.4%. The plant's limited output places it as the third-largest of four petroleum-fueled plants in Maryland, and 43rd out of 60 similar plants nationally. Public information sources indicate some recent interest in the plant, with 10 news articles mentioning Vienna Operations, covering industry trends, grid operations, and regulatory matters. A Wikipedia extract is available for the plant.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
RFC
Balancing Authority
PJM Interconnection, LLC
Grid Voltage
138 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Generation
0 MWh
Latest Month
6.8K MWh
Annual Generation
0.4%
Capacity Factor
Jan 2022 – Dec 2024
Financial Data
No financial data available for this plant.
Pricing & Market Data
HIGH confidencePoint of Interconnection
Nearest Substation
Vienna Local Substation · 69 kV
Substation Distance
0 km
Operator
Delmarva Power
Coord Source
OSM spatial
Market Position
ISO/RTO Market
PJM
LMP Node
VIENNA 13 KV UNIT10
Pricing Hub
WESTERN HUB
Location Type
Generation Node
Node Source
Curated node match
News & Articles (10)Beta
Last updated 2026-03-26
View all 10 articles