Mon Valley Works — United States of America
Gas power plant in Pennsylvania, United States of America. Approximate location 40.3925, -79.8564.
GasPennsylvaniaUnited States of AmericaCO₂ modelled
Mon Valley Works is a 52.5 MW gas power plant in Pennsylvania, United States of America. It is operated by United States Steel-Mon Valley. Based on reported annual generation of 398 GWh, it can supply roughly 114k homes. It ranks #3576 of 10,884 United States of America power plants by installed capacity. Commissioned in 1945, it is around 81 years old — an older, legacy facility. Its modelled annual emissions are 87,184 t CO₂/yr (Climate TRACE), equivalent to about 20k cars driven for a year. In context, gas supplies about 40.0% of United States of America's electricity; the national grid averages 384 gCO₂/kWh (43.0% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id USA0050732.
Data status
Known data
Modelled source data
Calculated from dataset
Not available
Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.
Data provenance
Source of the capacity and fuel values:
capacity: Wikidata P2109; fuel: WRI GPPD
In context: how this plant compares
At 52.5 MW, Mon Valley Works is below the median gas plant in United States of America (121.2 MW). Gas plants burn natural gas either in open-cycle turbines for fast peaking, or in combined-cycle units that recover exhaust heat in an HRSG to reach roughly 55–62% efficiency — the cleanest-burning fossil option.
Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.
~87,184 t CO₂/yr (modelled) — in everyday terms
This facility's annual emissions are roughly equivalent to:
Equivalencies via US EPA Greenhouse Gas Equivalencies; modelled emissions from Climate TRACE.
Key facts
- Load factor
- 87%, from 398 GWh of reported generation; the median for 1622 gas plants in United States of America that report generation is 26%
- Generation trend
- 438 GWh in 2013 and 398 GWh in 2019 (−9%)
- Highest and lowest year
- 2013: 438 GWh; 2015: 225 GWh
- Share of United States of America gas capacity
- less than 0.1% of 789,950 MW across 2,165 plants in this dataset
- Age among peers
- 1 of 1,973 dated gas plants in United States of America is older
Calculated from the capacity and generation records in this dataset (WRI Global Power Plant Database (CC BY 4.0)).
Reported generation trend
Annual generation (GWh), WRI Global Power Plant Database (CC BY 4.0).
Owner
Operated by United States Steel-Mon Valley.
Local climate & thermal context
This gas plant burns natural gas in a turbine — often in a combined-cycle setup — to generate electricity. It sits in a humid subtropical climate (Köppen Cfa) — Northern Hemisphere, latitude 40.4°N — which shapes how much energy it can produce and how its output varies through the year.
Monthly mean temperature
Heating degree-days here run 23% above 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: 63/100 — this site sits in the mid third of the power plants we cover by heating degree-days.
A gas turbine here also runs ~0% below its ISO (15°C) rating at this annual mean (typical CCGT curve, estimate).
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.
Site climate & environmental severity
This site sits in a mild atmospheric environment (estimated ISO 9223 class C2 — Low), with humidity / wetness the leading environmental stress.
Indicative estimate via the ISO 9223:2012 informative method (atmospheric corrosivity from temperature, time-of-wetness and airborne salinity), using WorldClim climate normals, the Köppen-Geiger class and coast distance. Indicative, not a measured corrosion rate.
How it compares & nearby plants
The #1342 largest gas power plant of 2165 in United States of America by capacity.
United States of America has 2165 gas power plants in this dataset, together about 789,950 MW of capacity.
Nearby power plants
- Clairton Works · Gas · 31 MW · Pennsylvania
- PPG Monroeville Chemicals Center · Oil · 1.1 MW · Pennsylvania
- ECP Uptown Campus · Gas · 5.6 MW · Pennsylvania
- Elrama Power Plant · Coal · 510 MW · Pennsylvania
- Cheswick Power Plant · Coal · 637 MW · Pennsylvania
- Cheswick Power Station · Coal · 637 MW · Pennsylvania
Location
Coordinates 40.3925, -79.8564 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Frequently asked questions
What type of power plant is Mon Valley Works?
Mon Valley Works is a 52.5 MW gas power plant in Pennsylvania, United States of America, commissioned in 1945.
How much electricity does Mon Valley Works generate?
Mon Valley Works generates about 398 GWh of electricity per year.
Who operates Mon Valley Works?
Mon Valley Works is operated by United States Steel-Mon Valley.
How much CO₂ does Mon Valley Works emit?
Mon Valley Works has modelled emissions of about 87,184 tonnes of CO₂ per year (Climate TRACE).