Home / United States / Marathon Bay Area Cogen

Marathon Bay Area Cogen

Gas power plant in California, United States. Approximate location 38.021, -122.0675.

GasCaliforniaUnited StatesCO₂ reported

Marathon Bay Area Cogen is a 114 MW gas power station in California, United States. It is operated by Tesoro Refining & Marketing Company LLC. Based on its capacity (estimated), it can supply roughly 127,833 homes (estimated). It ranks #31 of 263 United States power plants by installed capacity. Its measured emissions of 117,792 t CO₂/yr (Climate TRACE) are equivalent to about 27,457 cars driven for a year.

114MW installed capacity
127,833homes powered (est.)
117,792t CO₂ / yr (Climate TRACE)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id CT-967.

117,792 t CO₂/yr — in everyday terms

This facility's annual emissions are roughly equivalent to:

27,457passenger cars driven for a year
15,362homes' yearly energy use
1,963,200tree seedlings grown 10 years to absorb it

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

Capacity vs largest gas plants in United States

Cricket Valley Energy: 1,312 MW1kCricket Va…CPV Three Rivers Energy Center: 1,300 MW1kCPV Three …Jackson Generation, LLC: 1,289 MW1kJackson Ge…Indeck Niles Energy Center: 1,174 MW1kIndeck Nil…Lake Charles Power: 1,000 MW1kLake Charl…Montgomery County: 1,000 MW1kMontgomery…Hamilton Patriot Generation Plant: 870 MW870Hamilton P…Hamilton Liberty: 870 MW870Hamilton L…

Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).

Owner

Operated by Tesoro Refining & Marketing Company LLC. All plants by this company →

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 warm-summer Mediterranean climate (Köppen Csb) — Northern Hemisphere, latitude 38.0°N — which shapes how much energy it can produce and how its output varies through the year.

15.2°Cannual mean temp
1,401heating degree-days (base 18°C)
396cooling degree-days (base 18°C)
299 melevation

Monthly mean temperature

J: 8 °CJF: 10 °CFM: 11 °CMA: 14 °CAM: 16 °CMJ: 20 °CJJ: 22 °CJA: 22 °CAS: 21 °CSO: 18 °CON: 12 °CND: 8 °CD22 °C

Heating degree-days here run 43% 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: 32/100 — this site sits in the bottom 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.

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.

How it compares & nearby plants

The #29 largest gas power plant of 125 in United States by capacity.

United States has 125 gas power plants in this dataset, together about 19,886 MW of capacity.

Nearby power plants

Location

Coordinates 38.021, -122.0675 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Built from open public data; no personal information. Operate this site? Request a correction or removal.