Idemitsu Kosan Chiba Refinery — Japan
Refinery in Japan. Approximate location 35.48552, 140.02956.
RefineryJapanCO₂ estimate (modelled)
Idemitsu Kosan Chiba Refinery is a refinery in Japan. Its listed capacity is 190,000 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 Idemitsu Kosan Co Ltd. By capacity it ranks #5 among 19 oil refineries in Japan. It emits about 1,625,756 t CO₂e a year from Climate TRACE. That is 0.99% of the CO₂e from the 105 facilities in Japan that have an emissions figure in IndustryAtlas.
Facility data: Climate TRACE v6 (asset-level capacity & CO₂e, CC BY 4.0), id ct-3143980.
Data status
Known source data
Calculated from the dataset
Not available
Source data, measured cross-checks and calculated values are kept separate. No confidence percentage is invented.
Similar facilities by modelled emissions
- Imperial Oil Sarnia Refinery · 1,625,111 t CO₂e/yr · Canada
- Sinopec-SK Wuhan Petrochemical Refinery · 1,627,928 t CO₂e/yr · China
- Sinopec Jinan Refinery · 1,627,960 t CO₂e/yr · China
- NIORDC Tehran Refinery · 1,622,074 t CO₂e/yr · Iran
- KazMunayGas Atyrau Refinery · 1,617,641 t CO₂e/yr · Kazakhstan
Same Climate TRACE subsector; closest non-placeholder modelled CO₂e values. Russia and Belarus excluded.
Operating power plants within 50 km
- Anegasaki · Oil · 3,150 MW · 1 km
- Tokyo Gas Bay power station · Gas · 103 MW · 5 km
- Sodegaura · Gas · 3,600 MW · 5 km
- Shin Nakasode power station · Gas · 112 MW · 6 km
- Nakasode Clean power station · Gas · 100 MW · 6 km
PowerAtlas operating assets, ordered by great-circle distance from published coordinates.
In context: how this facility compares
At 190,000 BBL per day, Idemitsu Kosan Chiba Refinery is well above the median refinery in Japan (145,000 BBL per day). Subsector: oil-and-gas-refining. As refinery, it requires high process heat (typically 200–600°C) for its core industrial operations, 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 1,625,756 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.
Carbon cost and Scope 1 emissions
At its reported 1.6M t CO₂e/yr (Scope 1), Idemitsu Kosan Chiba Refinery carries no domestic carbon price, and its products are not CBAM-covered goods, so there is no border-carbon liability. At the EU ETS reference price (€75/t) the emissions carry an indicative carbon value of €123M/yr.
Carbon price: EU CBAM €75/t · EU ETS €85/t, September 10, 2026, refreshed live via Carbon Hub. CO₂: Climate TRACE. Indicative carbon value, not the cash bill — free allocation applies; not compliance advice.
Capacity vs largest oil refineries in Japan
Listed capacity (BBL per day), Climate TRACE v6 (asset-level capacity & CO₂e, CC BY 4.0).
Operator
Operated by Idemitsu Kosan Co Ltd. All facilities by this operator →
Local climate
Idemitsu Kosan Chiba Refinery sits in a humid subtropical climate zone (Köppen Cfa), at 35.5°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 a corrosive environment (estimated ISO 9223 class C4 — High), with humidity / wetness the leading environmental stress.
In this site’s local climate, a bare 150 °C surface sheds about 1348 W/m² to ambient — roughly 1.04× 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 #5 largest of 19 oil refineries in Japan by listed capacity (Climate TRACE).
Nearby industrial sites
- Idemitsu Kosan Chiba, Chiba · Petrochemical · 582,070 t CO₂
- Mitsui Chemicals Chiba, Ichihara, Chiba · Petrochemical · 777,500 t CO₂
- Fuji Oil Sodegaura Refinery · Refinery · 736,584 t CO₂
- Keiyo Ethylene , Ichihara, Chiba · Petrochemical · 970,117 t CO₂
- OIREC Chiba Refinery · Refinery · 1,103,803 t CO₂
- Maruzen Petrochemical, Chiba · Petrochemical · 674,864 t CO₂
Location
Coordinates 35.48552, 140.02956. View on OpenStreetMap.
Frequently asked questions
What type of facility is Idemitsu Kosan Chiba Refinery?
Idemitsu Kosan Chiba Refinery is a refinery in Japan. 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 Idemitsu Kosan Chiba Refinery?
The open dataset lists 190,000 BBL per day of capacity for Idemitsu Kosan Chiba Refinery.
How much CO₂ does Idemitsu Kosan Chiba Refinery emit?
The page uses about 1,625,756 t CO₂e/year from the open dataset It ranks #22 among facilities in Japan by estimated CO₂.
Where is Idemitsu Kosan Chiba Refinery located?
Idemitsu Kosan Chiba Refinery is in Japan at approximately 35.48552, 140.02956.
Who operates Idemitsu Kosan Chiba Refinery?
The operator recorded in the open dataset is Idemitsu Kosan Co Ltd.