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SK Ulsan Refinery

Refinery in South Korea. Approximate location 35.50091, 129.34926.

RefinerySouth KoreaCO₂ estimate (modelled)

SK Ulsan Refinery is a refinery in South Korea. Its listed capacity is 781,000 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 SK Inc. By capacity it ranks #1 among 9 oil refineries in South Korea. It emits about 7,295,436 t CO₂e a year from Climate TRACE, roughly comparable to the annual emissions of 1.7 million passenger cars. Its CO₂ per unit of capacity is 9% above the national median for this sector.

781,000BBL per day
7,295,436t CO₂e / yr (Climate TRACE)
#5CO₂ rank in South Korea
9.34t CO₂ per capacity unit

Facility data: Climate TRACE v6 (asset-level capacity & CO₂e, CC BY 4.0), id ct-1753673.

Data status

Known source data

FacilitySK Ulsan Refinery Climate TRACE
CountrySouth Korea Climate TRACE
Coordinates35.50091, 129.34926 Climate TRACE
Sector / subsectoroil-and-gas-refining Climate TRACE
Reported capacity781,000 BBL per day Climate TRACE
Owner / operatorSK Inc Climate TRACE
Modelled CO₂e7,295,436 t/yr Climate TRACE

Calculated from the dataset

South Korea rank#5 of 51 · top 9.8% calculated
Global oil-and-gas-refining rank#6 of 630 · top 1.0% 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 781,000 BBL per day, SK Ulsan Refinery is well above the median refinery in South Korea (256,000 BBL per day). Subsector: oil-and-gas-refining. As refinery, it requires high process heat (typically 200–600°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. 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 7,295,436 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:

1.7 millioncars driven for a year
951khomes' annual energy use
122 milliontree seedlings grown 10 years

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

Carbon cost, Scope 1 & decarbonization potential

At its reported 7.3M t CO₂e/yr (Scope 1), SK Ulsan Refinery carries no domestic carbon price; refinerys are not a CBAM-covered good, so there is no border-carbon liability. At the EU ETS reference price (€75/t) the emissions carry an indicative carbon value of €550M/yr. 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 ≈146k t–365k t/yr, worth €11.0M€27.5M, 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).

7.3M t CO₂e / yrScope 1 emissions
€550M/yrindicative carbon value (not a CBAM liability)
146k t–365k t/yr ≈ €11.0M€27.5MDecarbonization 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 oil refineries in South Korea

SK Ulsan Refinery: 781,000 BBL per day781kSK Ulsan R…GS-Caltex Yeosu Refinery: 744,000 BBL per day744kGS-Caltex …S-Oil Onsan Refinery: 519,000 BBL per day519kS-Oil Onsa…Hyundai Oilbank Daesan Refinery: 484,000 BBL per day484kHyundai Oi…SK Incheon Oil Refinery: 256,000 BBL per day256kSK Incheon…Hanwha Total Condensate Splitter: 167,000 BBL per day167kHanwha Tot…Hyundai Lotte Daesan Condensate Splitter: 158,000 BBL per day158kHyundai Lo…SK Incheon Condensate Splitter: 93,000 BBL per day93kSK Incheon…

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

Operator

Operated by SK Inc. All facilities by this operator →

Local climate

SK Ulsan Refinery sits in a humid subtropical climate zone (Köppen Cfa), at 35.5°N in the northern hemisphere.

~18°Ctypical annual mean
~27°Ctypical warm-season
Humid subtropical: four distinct seasons — cold winters and warm summers

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 a corrosive environment (estimated ISO 9223 class C4 — High), with humidity / wetness the leading environmental stress.

C4ISO 9223 corrosivity (indicative)
45/100environmental-severity index
22.1°Cseasonal temperature swing
29 kmdistance to coast
HighCUI risk tier

In this site’s local climate, a bare 150 °C surface sheds about 1356 W/m² to ambient — roughly 1.04× the loss at a 20 °C reference; removable insulation recovers about 1288 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 #1 largest of 9 oil refineries in South Korea by listed capacity (Climate TRACE).

Nearby industrial sites

Location

Coordinates 35.50091, 129.34926. View on OpenStreetMap.

Heat loss & insulation profile

For a refinery, the main modular-insulation targets are crude & vacuum distillation columns, fired heaters, heat exchangers, steam lines, valves & flanges. Typical hot-surface ranges used for screening: 150–550 °C.

Indicative recoverable energy

A first-pass insulation screen suggests about 76,000 MWh/year of recoverable heat-loss reduction and about 15,000 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:

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

Frequently asked questions

What type of facility is SK Ulsan Refinery?

SK Ulsan Refinery is a refinery in South Korea. 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.

What capacity is listed for SK Ulsan Refinery?

The open dataset lists 781,000 BBL per day of capacity for SK Ulsan Refinery.

How much CO₂ does SK Ulsan Refinery emit?

The page uses about 7,295,436 t CO₂e/year from the open dataset It ranks #5 among facilities in South Korea by estimated CO₂.

Where is SK Ulsan Refinery located?

SK Ulsan Refinery is in South Korea at approximately 35.50091, 129.34926.

Who operates SK Ulsan Refinery?

The operator recorded in the open dataset is SK Inc.

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