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Krakatau Steel Cilegon plant

Steel Plant in Indonesia. Approximate location -6.00223, 106.00026.

Steel PlantIndonesiaCO₂ estimate (modelled)

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, roughly comparable to the annual emissions of 191k passenger cars. Its CO₂ per unit of capacity is 78% below the national median for this sector.

4,000,000t of steel
817,753t CO₂e / yr (Climate TRACE)
#27CO₂ rank in Indonesia
0.20t CO₂ per capacity unit

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

Data status

Known source data

FacilityKrakatau Steel Cilegon plant Climate TRACE
CountryIndonesia Climate TRACE
Coordinates-6.00223, 106.00026 Climate TRACE
Sector / subsectoriron-and-steel Climate TRACE
Reported capacity4,000,000 t of steel Climate TRACE
Owner / operatorPT Krakatau Steel (Persero) Tbk Climate TRACE
GEM steel parentPOSCO Holdings Inc [50.0%]; PT Krakatau Steel (Persero) Tbk [50.0%] Global Energy Monitor
Steel process routeintegrated BF Global Energy Monitor
Steel asset statusoperating Global Energy Monitor
Steel equipmentBF, BOF Global Energy Monitor
Steel capacity3,000 ktpa Global Energy Monitor
Modelled CO₂e817,753 t/yr Climate TRACE

Calculated from the dataset

Indonesia rank#27 of 53 · top 50.9% calculated
Global iron-and-steel rank#413 of 868 · top 47.6% calculated
Climate contextderived from coordinates calculated

Not available

Fuel typeNot available not in dataset
Thermal capacity (MW)Not available not in dataset

Source data, measured cross-checks and calculated values are kept separate. No confidence percentage is invented.

Similar facilities by modelled emissions

Same Climate TRACE subsector; closest non-placeholder modelled CO₂e values. Russia and Belarus excluded.

Operating power plants within 50 km

PowerAtlas operating assets, ordered by great-circle distance from published coordinates.

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 — heat that must be supplied by boilers, furnaces or direct combustion, and losses through uninsulated vessels and piping represent wasted fuel. Removable modular insulation can cut those losses by 80–96%, surface-cooling equipment to ≤45°C, with payback often under 2 years. 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:

191kcars driven for a year
107khomes' annual energy use
14 milliontree seedlings grown 10 years

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

Carbon cost, Scope 1 & decarbonization potential

At its reported 818k t CO₂e/yr (Scope 1), Krakatau Steel Cilegon plant carries no domestic carbon price — and as a CBAM-covered product, its 818k t at the EU CBAM rate (€75/t) is €61.6M/yr of exposure on EU-bound exports. CBAM share rises from 2.5% (2026) to 100% by 2034. The fastest decarbonization lever is energy efficiency: eliminating heat loss on hot equipment (removable insulation, steam & waste-heat recovery) typically cuts 2–5% of fuel-related CO₂ — here ≈16k t–41k t/yr, worth €1.2M€3.1M, with payback up to 2 years. No domestic carbon price — but cement, steel, aluminium, fertilizer and hydrogen exported to the EU face CBAM at €75/t (rising to 100% by 2034).

818k t CO₂e / yrScope 1 emissions
€61.6M/yrCBAM exposure on EU exports
16k t–41k t/yr ≈ €1.2M€3.1MDecarbonization potential

Carbon price: EU CBAM €75/t · EU ETS €79/t, July 2, 2026, refreshed live via Carbon Hub. CO₂: Climate TRACE. Efficiency range: US DOE / ASTM C680 (method). Indicative carbon value, not the cash bill — free allocation applies; not compliance advice. Estimate the saving for this site →

Capacity vs largest steel plants in Indonesia

Dexin Steel Morowali plant: 7,000,000 t of steel7.0MDexin Stee…Krakatau Steel Cilegon plant: 4,000,000 t of steel4.0MKrakatau S…Gunung Raja Paksi West Java steel plant: 2,800,000 t of steel2.8MGunung Raj…Jakarta Prima Steel Industries plant: 900,000 t of steel900kJakarta Pr…PT Ispat Indo steel plant: 650,000 t of steel650kPT Ispat I…

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.

~26°Ctypical annual mean
~27°Ctypical warm-season
Tropical rainforest: hot and humid year-round with little seasonal variation

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

Site climate & environmental severity

The local climate sets how fast unprotected steel, protective coatings and the insulation on hot process equipment degrade at this site. It sits in an aggressive, high-corrosion environment (estimated ISO 9223 class C5 — Very high), with marine salt corrosion the leading environmental stress.

C5ISO 9223 corrosivity (indicative)
48/100environmental-severity index
1.2°Cseasonal temperature swing
31 kmdistance to coast
Very highCUI risk tier

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; removable insulation recovers about 1178 W/m² of that. 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).

Higher environmental severity is exactly where protective removable insulation pays back most: a sheltered micro-climate slows corrosion, UV and thermal-cycling damage and extends outdoor hardware service life. This is an indicative site-climate context — not a condition assessment of any specific plant or operator.

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

Location

Coordinates -6.00223, 106.00026. View on OpenStreetMap.

Heat loss & insulation profile

For a steel plant, the main modular-insulation targets are reheat & annealing furnaces, ladles, hot-blast stoves, steam & gas ducting. Typical hot-surface ranges used for screening: 200–1,200 °C.

Indicative recoverable energy

A first-pass insulation screen suggests about 4,100 MWh/year of recoverable heat-loss reduction and about 1,400 t CO₂e/year of avoided emissions. Screening estimate scaled from installed process-heat projects and surface-temperature reduction data.

See Inzonex Modular Insulation → Run the calculator →

Screening calculation from facility class, capacity and open emissions/energy context. Engineering survey required before procurement.

Safety & the no-regret first step

Start with a thermal survey of valves, flanges, doors and bends. Removable modular insulation keeps maintenance access open while lowering exposed-surface temperature and wasted heat.

External climate finance your country can access

For energy-efficiency projects around process heat, likely external funding channels include:

CBAM. Exporters of cement, steel, aluminium, fertiliser, hydrogen and electricity to the EU face the Carbon Border Adjustment Mechanism — cutting embedded emissions (efficiency + insulation) lowers the levy.

Sources: country climate-finance facilities and public development-bank programmes.

Frequently asked questions

What type of facility is Krakatau Steel Cilegon plant?

Krakatau Steel Cilegon plant is a steel plant in Indonesia. 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.

What capacity is listed for Krakatau Steel Cilegon plant?

The open dataset lists 4,000,000 t of steel of capacity for Krakatau Steel Cilegon plant.

How much CO₂ does Krakatau Steel Cilegon plant emit?

The page uses about 817,753 t CO₂e/year from the open dataset It ranks #27 among facilities in Indonesia by estimated CO₂.

Where is Krakatau Steel Cilegon plant located?

Krakatau Steel Cilegon plant is in Indonesia at approximately -6.00223, 106.00026.

Who operates Krakatau Steel Cilegon plant?

The operator recorded in the open dataset is PT Krakatau Steel (Persero) Tbk.

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