Vienna Operations
Oil power plant in Dorchester County, Maryland. 180.6 MW of nameplate capacity across 2 generators, operated by NRG Vienna Operations Inc.
Also known as Vienna Generating Station · EIA plant 1564
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Key facts
- Capacity
- 180.6 MWNameplate
- Generators
- 2 operatingEIA-860M, August 2026
- Operating since
- January 1968First generator online
- Operator
- NRG Vienna Operations IncEIA operator ID 19830
- Grid
- PJMBalancing authority PJM
- Price nodes
- 2 PJM nodesResource nodes with prices
- Location
- Dorchester County, MD38.4878, −75.8208
- EIA plant ID
- 1564EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Vienna Operations produces
Free · EIA-923Net generation, 2025
13.2 GWh
13,191 MWh, final
Capacity factor, 2025
0.8%
2024: 0.3%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
−1.9–13.2
GWh a year. Low 2020, high 2025
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 274,734 | Not reported | 12 of 12 |
| 2001 | 144,874 | Not reported | 12 of 12 |
| 2002 | 151,030 | Not reported | 12 of 12 |
| 2003 | 94,834 | Not reported | 12 of 12 |
| 2004 | 31,143 | Not reported | 12 of 12 |
| 2005 | 91,492 | Not reported | 12 of 12 |
| 2006 | 7,418 | Not reported | 12 of 12 |
| 2007 | 27,993 | Not reported | 12 of 12 |
| 2008 | 26,781 | Not reported | 12 of 12 |
| 2009 | 19,277 | Not reported | 12 of 12 |
| 2010 | 8,388 | 0.5% | 12 of 12 |
| 2011 | 14,012 | 0.9% | 12 of 12 |
| 2012 | 2,711 | Not reported | 12 of 12 |
| 2013 | 4,362 | 0.3% | 12 of 12 |
| 2014 | 15,583 | 1.0% | 12 of 12 |
| 2015 | 11,050 | 0.7% | 12 of 12 |
| 2016 | 744 | 0.0% | 12 of 12 |
| 2017 | −1,432 | -0.1% | 12 of 12 |
| 2018 | 5,518 | 0.3% | 12 of 12 |
| 2019 | −494 | -0.0% | 12 of 12 |
| 2020 | −1,868 | -0.1% | 12 of 12 |
| 2021 | 243 | 0.0% | 12 of 12 |
| 2022 | 7,053 | 0.4% | 12 of 12 |
| 2023 | 2,904 | 0.2% | 12 of 12 |
| 2024 | 4,559 | 0.3% | 12 of 12 |
| 2025 | 13,191 | 0.8% | 12 of 12 |
| 2026 (provisional, partial year) | Not reported | Not reported | 0 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free account · PJMEmissions
Free · EPA CAMPDCO₂, 2025
25,016
US short tons. 2024: 13,390
SO₂, 2025
238
US short tons
NOx, 2025
44
US short tons
CO₂ per MWh, calculated
1.90 t
About 3,793 lb per MWh
1 of 1 EPA units reported CO₂ in 2025 (10, 8), matched to EIA plant 1564 through the EPA–EIA crosswalk. The per-MWh rate is EPA CO₂ divided by EIA-923 net generation. The two reporting boundaries can differ.
Water use
Free · EIA-923 cooling, USGSWithdrawal, 2024
5
million gallons
Consumption, 2024
5
million gallons
Source
Nanticoke River
Surface, Brackish. Induced-draft tower
Watershed stress
Low · 0.298
USGS SUI, HUC12 Chicone Creek-Nanticoke River
12 of 12 cooling months report withdrawal. Saline, brackish or ocean intake; not tested. Blank volumes are unreported, not zero.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 8 | Petroleum Liquids | 162.0 | January 1972 |
| 10 | Petroleum Liquids | 18.6 | January 1968 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists NRG Vienna Operations Inc as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
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Power plants near Vienna Operations
Questions about Vienna Operations
How much power does Vienna Operations produce?
Vienna Operations reported 13,191 MWh (13.2 GWh) of net generation in 2025, a 0.8% capacity factor on 180.6 MW of nameplate capacity.
Where is Vienna Operations?
Vienna Operations is in Dorchester County, Maryland, at 38.4878, −75.8208. It is in the PJM Interconnection, LLC balancing area (PJM).
Who operates Vienna Operations?
EIA-860M for August 2026 lists NRG Vienna Operations Inc as the operator (EIA operator ID 19830). The operator is not always the owner.
When did Vienna Operations start operating?
Its first generator began operating in January 1968, according to EIA-860M.
Does InfraMap have power prices for Vienna Operations?
Yes. InfraMap has PJM day-ahead and real-time prices at 2 price nodes linked to Vienna Operations, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- EPA CAMPD annual emissions through the EPA–EIA crosswalk, 1995 to 2025
- PJM day-ahead and real-time prices; node and hub assignments as of 2026-10-05
- EIA-923 cooling water 2024 and the USGS surface water supply and use index, Water years 2010-2020 (Oct 2009 to Sep 2020), mean of monthly values
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page