Nippon Kyushu Works (Oita Area, Oita) steel plant — Japan

Nippon Kyushu Works (Oita Area, Oita) steel plant is a steel plant in Japan. Its listed capacity is 9,999,000 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 Nippon Steel Corp. By capacity it ranks #4 among 27 steel plants in Japan. It emits about 11,600,217 t CO₂e a year from Climate TRACE. That is 7.1% of the CO₂e from the 105 facilities in Japan that have an emissions figure in IndustryAtlas. Its CO₂ per unit of capacity is 25% above the national median for this sector.

Facility data: Climate TRACE v6 (asset-level capacity & CO₂e, CC BY 4.0), id ct-1566925.

In context: how this facility compares

At 9,999,000 t of steel, Nippon Kyushu Works (Oita Area, Oita) steel plant is well above the median steel plant in Japan (1,596,000 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 11,600,217 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 Japan

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

Operator

Operated by Nippon Steel Corp. All facilities by this operator →

Local climate

Nippon Kyushu Works (Oita Area, Oita) steel plant sits in a humid subtropical climate zone (Köppen Cfa), at 33.3°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 1344 W/m² to ambient — roughly 1.03× 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 #4 largest of 27 steel plants in Japan by listed capacity (Climate TRACE).

Nearby industrial sites

• Resonac Oita, KK Oita · Petrochemical · 868,888 t CO₂
• ENEOS Oita Refinery · Refinery · 1,090,460 t CO₂
• Taiheiyo Cement Oita Cement Plant · Cement Plant · 670,290 t CO₂
• Nippon Stainless Steel Yamaguchi Works (Hikari Area) steel plant · Steel Plant · 97,836 t CO₂
• JPN-Ube_ammonia · Chemical Plant · 174,716 t CO₂
• Ube Industries Kanda Cement Plant · Cement Plant · 592,454 t CO₂

Location

Coordinates 33.26057, 131.6462. View on OpenStreetMap.

Frequently asked questions