Marathon Galveston Bay Refinery — United States

Marathon Galveston Bay Refinery is a refinery in United States. Its listed capacity is 633,000 BBL per day. Refineries heat, fractionate and chemically transform crude oil into fuels and petrochemical feedstocks through energy-intensive distillation and cracking — extremely demanding on steam generation and heat recovery. It is operated by Marathon Petroleum Corp. By capacity it ranks #2 among 119 oil refineries in United States. It emits about 7,124,794 t CO₂e a year from Climate TRACE. That is 1.3% of the CO₂e from the 1,910 facilities in United States that have an emissions figure in IndustryAtlas. Its CO₂ per unit of capacity is 31% above the national median for this sector.

Facility data: Climate TRACE v6 (asset-level capacity & CO₂e, CC BY 4.0), id ct-1753267.

In context: how this facility compares

At 633,000 BBL per day, Marathon Galveston Bay Refinery is well above the median refinery in United States (89,200 BBL per day). Subsector: oil-and-gas-refining. As refinery, it requires high process heat (typically 200–600°C) for its core industrial operations, supplied by boilers, furnaces or direct combustion. Refineries heat, fractionate and chemically transform crude oil into fuels and petrochemical feedstocks through energy-intensive distillation and cracking — extremely demanding on steam generation and heat recovery.

Capacity & CO₂-intensity comparison computed from Climate TRACE industrial facilities data; sector role based on engineering reference.

What 7,124,794 t CO₂e a year looks like

This facility's estimated annual CO₂e (Climate TRACE, modelled) in everyday equivalents from the US EPA Greenhouse Gas Equivalencies calculator:

Equivalencies: US EPA Greenhouse Gas Equivalencies. Emissions: Climate TRACE.

Capacity vs largest oil refineries in United States

Listed capacity (BBL per day), Climate TRACE v6 (asset-level capacity & CO₂e, CC BY 4.0).

Operator

Operated by Marathon Petroleum Corp. All facilities by this operator →

Local climate

Marathon Galveston Bay Refinery sits in a humid subtropical climate zone (Köppen Cfa), at 29.4°N in the northern hemisphere.

Köppen zone: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid).

Site climate & environmental severity

This site sits in an aggressive, high-corrosion environment (estimated ISO 9223 class C5 — Very high), with marine salt corrosion the leading environmental stress.

In this site’s local climate, a bare 150 °C surface sheds about 1292 W/m² to ambient — roughly 0.99× the loss at a 20 °C reference. Reference-surface calculation at a 150 °C surface from WorldClim climate normals (ASTM C680 / ISO 12241) — an indicative per-climate comparison, not a measurement of this site’s specific equipment. Open method dataset: DOI 10.5281/zenodo.20787408 (CC BY 4.0).

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 sites

The #2 largest of 119 oil refineries in United States by listed capacity (Climate TRACE).

Nearby industrial sites

• Linde Inc Texas City Hydrogen Complex · Chemical Plant · 1,449,348 t CO₂
• UNION CARBIDE TEXAS CITY · Chemical Plant · 14,074 t CO₂
• INEOS US Chemicals Company · Chemical Plant · 136,104 t CO₂
• INEOS NOVA LLC Texas City Site · Chemical Plant · 83,803 t CO₂
• LINDE TEXAS CITY · Chemical Plant · 435,116 t CO₂
• Valero Texas City Refinery · Refinery · 2,896,605 t CO₂

Location

Coordinates 29.37469, -94.93346. View on OpenStreetMap.

Frequently asked questions