Krakatau Steel Cilegon plant — Indonesia

Krakatau Steel Cilegon plant is a steel plant in Indonesia. Its listed capacity is 4,000,000 t of steel. Steel plants burn coal in blast furnaces or use electric arcs to melt scrap; in both cases the molten metal must be kept above 1,500°C and transferred through extensive hot piping and vessels. It is operated by PT Krakatau Steel (Persero) Tbk. By capacity it ranks #2 among 5 steel plants in Indonesia. It emits about 817,753 t CO₂e a year from Climate TRACE. That is 1.1% of the CO₂e from the 53 facilities in Indonesia that have an emissions figure in IndustryAtlas. Its CO₂ per unit of capacity is 78% below the national median for this sector.

Facility data: Climate TRACE v6 (asset-level capacity & CO₂e, CC BY 4.0), id ct-1566836.

In context: how this facility compares

At 4,000,000 t of steel, Krakatau Steel Cilegon plant is well above the median steel plant in Indonesia (2,800,000 t of steel). Subsector: iron-and-steel. As steel plant, it requires high process heat (typically 800–1500°C) for its core industrial operations, supplied by boilers, furnaces or direct combustion. Steel plants burn coal in blast furnaces or use electric arcs to melt scrap; in both cases the molten metal must be kept above 1,500°C and transferred through extensive hot piping and vessels.

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

What 817,753 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 steel plants in Indonesia

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

Operator

Operated by PT Krakatau Steel (Persero) Tbk.

Local climate

Krakatau Steel Cilegon plant sits in a tropical rainforest climate zone (Köppen Af), at 6.0°S in the southern 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 1240 W/m² to ambient — roughly 0.95× 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 5 steel plants in Indonesia by listed capacity (Climate TRACE).

Nearby industrial sites

• KS Posco Cilegon steel plant · Steel Plant · 4,575,957 t CO₂
• PT Chandra asri Petrochemical, Asri Cilegon, West Java · Petrochemical · 1,854,911 t CO₂
• IKPP P.T. Indah Kiat Pulp & Paper TbK - Serang Mill · Pulp & Paper Mill · 810,636 t CO₂
• IKPP P.T. Indah Kiat Pulp & Paper TbK - Tangerang Mill · Pulp & Paper Mill · 810,636 t CO₂
• Master Steel Jakarta Steel plant · Steel Plant · 272,601 t CO₂
• Jakarta Prima Steel Industries plant · Steel Plant · 163,561 t CO₂

Location

Coordinates -6.00223, 106.00026. View on OpenStreetMap.

Frequently asked questions