Topy Industries Toyohashi steel plant — Japan

Topy Industries Toyohashi steel plant is a steel plant in Japan. Its listed capacity is 960,000 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 Topy Industries Ltd. By capacity it ranks #18 among 27 steel plants in Japan. It emits about 55,519 t CO₂e a year from Climate TRACE. That is 0.03% of the CO₂e from the 105 facilities in Japan that have an emissions figure in IndustryAtlas. Its CO₂ per unit of capacity is 94% below the national median for this sector.

Facility data: Climate TRACE v6 (asset-level capacity & CO₂e, CC BY 4.0), id ct-1566934.

In context: how this facility compares

At 960,000 t of steel, Topy Industries Toyohashi steel plant is below 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 55,519 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 Topy Industries Ltd.

Local climate

Topy Industries Toyohashi steel plant sits in a humid subtropical climate zone (Köppen Cfa), at 34.7°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 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 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 #18 largest of 27 steel plants in Japan by listed capacity (Climate TRACE).

Nearby industrial sites

• Tokyo Steel Tahara plant · Steel Plant · 150,365 t CO₂
• Aichi Steel Chita Plant (Tokai) · Steel Plant · 86,460 t CO₂
• Idemitsu Kosan Aichi Refinery · Refinery · 1,454,624 t CO₂
• Daido Steel Chita plant (Tokai) · Steel Plant · 86,749 t CO₂
• Nippon Nagoya steel plant · Steel Plant · 6,948,397 t CO₂
• Kyoei Steel Nagoya Division (Tokai) · Steel Plant · 73,158 t CO₂

Location

Coordinates 34.72216, 137.3218. View on OpenStreetMap.

Frequently asked questions