Vienna Operations

Oil power plant in Maryland, United States of America. Approximate location 38.4878, -75.8208.

OilMarylandUnited States of AmericaCO₂ reported

Vienna Operations is a 181 MW oil power station in Maryland, United States of America. It is operated by NRG Vienna Operations Inc. Based on reported annual generation of 0 GWh, it can supply roughly -142 homes. It ranks #1358 of 9,833 United States of America power plants by installed capacity. Commissioned in 1971, it is around 55 years old — an older, legacy facility. Its measured emissions of 118,614 t CO₂/yr (Climate TRACE) are equivalent to about 27,649 cars driven for a year. In context, oil supplies about 0.7% of United States of America's electricity; the national grid averages 384 gCO₂/kWh (43.0% low-carbon) (2025).

181MW installed capacity
0GWh reported / yr
-142homes powered
118,614t CO₂ / yr (Climate TRACE)
1971commissioned (~55 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id USA0001564.

118,614 t CO₂/yr — in everyday terms

This facility's annual emissions are roughly equivalent to:

27,649passenger cars driven for a year
15,469homes' yearly energy use
1,976,900tree seedlings grown 10 years to absorb it

Equivalencies via US EPA Greenhouse Gas Equivalencies; emissions reported to Climate TRACE.

Reported generation trend

2013: 4 GWh20132014: 16 GWh20142015: 11 GWh20152016: 1 GWh20162017: -1 GWh20172018: 6 GWh20182019: 0 GWh201916 GWh

Annual generation (GWh), WRI Global Power Plant Database (CC BY 4.0).

Owner

Operated by NRG Vienna Operations Inc.

Local climate & thermal context

This oil plant burns oil or diesel to drive turbines or reciprocating engines. It sits in a humid subtropical climate (Köppen Cfa) — Northern Hemisphere, latitude 38.5°N — which shapes how much energy it can produce and how its output varies through the year.

13.5°Cannual mean temp
2,230heating degree-days (base 18°C)
607cooling degree-days (base 18°C)
9 melevation

Monthly mean temperature

J: 2 °CJF: 3 °CFM: 7 °CMA: 12 °CAM: 18 °CMJ: 22 °CJJ: 25 °CJA: 24 °CAS: 21 °CSO: 14 °CON: 9 °CND: 4 °CD25 °C

Heating degree-days here run 9% below the median power plant in this dataset — a proxy for how much extra energy heated equipment must replace through its surfaces in winter.

Climate heat-demand index: 47/100 — this site sits in the mid third of the power plants we cover by heating degree-days.

In colder climates, uninsulated hot equipment (boilers, turbines, valves, steam lines) loses proportionally more heat to ambient air — exactly the loss Inzonex modular insulation is designed to cut.

Climate normals: WorldClim 2.1 (1970–2000 monthly normals, 10 arc-min, CC BY 4.0); zone: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid). Degree-days & heat-demand index computed by PowerAtlas — a modelled heat-demand proxy, not a measured site figure.

How it compares & nearby plants

The #39 largest oil power plant of 876 in United States of America by capacity.

United States of America has 876 oil power plants in this dataset, together about 37,143 MW of capacity.

Nearby power plants

Location

Coordinates 38.4878, -75.8208 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

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