SCGC Rayong Olefins (ROC), Map Ta Phut, Rayong — Thailand

SCGC Rayong Olefins (ROC), Map Ta Phut, Rayong is a petrochemical plant in Thailand. Its listed capacity is 900,000 t of ethylene. Petrochemical plants crack hydrocarbons at very high temperatures to produce ethylene, propylene and other building-block chemicals — one of the most heat-intensive industrial processes. It is operated by SCG Chemicals PCL. By capacity it ranks #2 among 3 petrochemical plants in Thailand. It emits about 1,845,816 t CO₂e a year from Climate TRACE. That is 3.8% of the CO₂e from the 37 facilities in Thailand that have an emissions figure in IndustryAtlas. Its CO₂ per unit of capacity is 57% above the national median for this sector.

Facility data: Climate TRACE v6 (asset-level capacity & CO₂e, CC BY 4.0), id ct-731980.

In context: how this facility compares

At 900,000 t of ethylene, SCGC Rayong Olefins (ROC), Map Ta Phut, Rayong is around the median petrochemical plant in Thailand (900,000 t of ethylene). Subsector: petrochemical-steam-cracking. As petrochemical plant, it requires high process heat (typically 300–800°C) for its core industrial operations, supplied by boilers, furnaces or direct combustion. Petrochemical plants crack hydrocarbons at very high temperatures to produce ethylene, propylene and other building-block chemicals — one of the most heat-intensive industrial processes.

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

What 1,845,816 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 petrochemical plants in Thailand

Listed capacity (t of ethylene), Climate TRACE v6 (asset-level capacity & CO₂e, CC BY 4.0).

Operator

Operated by SCG Chemicals PCL.

Local climate

SCGC Rayong Olefins (ROC), Map Ta Phut, Rayong sits in a tropical savanna climate zone (Köppen Aw), at 12.7°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 extreme marine/tropical environment (estimated ISO 9223 class CX — Extreme), with marine salt corrosion the leading environmental stress.

In this site’s local climate, a bare 150 °C surface sheds about 1220 W/m² to ambient — roughly 0.94× 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 3 petrochemical plants in Thailand by listed capacity (Climate TRACE).

Nearby industrial sites

• PTT Rayong Refinery · Refinery · 3,517,088 t CO₂
• Star Petroleum Map Ta Phut Refinery · Refinery · 1,714,021 t CO₂
• PTT Global Chemical Map Ta Phut, Map Ta Phut, Rayong · Petrochemical · 3,850,620 t CO₂
• Tata Steel Manufacturing SCSC Plant · Steel Plant · 20,839 t CO₂
• Siam Yamato Steel Map Ta Phut plant · Steel Plant
• Siam Yamato Steel Huai Pong plant · Steel Plant · 18,945 t CO₂

Location

Coordinates 12.71262, 101.1501. View on OpenStreetMap.

Frequently asked questions