Megasa Siderúrgica Narón steel plant — Spain

Megasa Siderúrgica Narón steel plant is a steel plant in Spain. Its listed capacity is 700,000 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 Megasa Siderurgica SL. By capacity it ranks #8 among 8 steel plants in Spain. It emits about 70,159 t CO₂e a year from Climate TRACE. That is 0.15% of the CO₂e from the 91 facilities in Spain that have an emissions figure in IndustryAtlas. Its CO₂ per unit of capacity is 89% below the national median for this sector.

Facility data: Climate TRACE v6 (asset-level capacity & CO₂e, CC BY 4.0), id ct-1566809.

In context: how this facility compares

At 700,000 t of steel, Megasa Siderúrgica Narón steel plant is below the median steel plant in Spain (1,300,000 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 70,159 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 Spain

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

Operator

Operated by Megasa Siderurgica SL.

Local climate

Megasa Siderúrgica Narón steel plant sits in a warm-summer Mediterranean climate zone (Köppen Csb), at 43.5°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 marine corrosion the leading environmental stress.

In this site’s local climate, a bare 150 °C surface sheds about 1361 W/m² to ambient — roughly 1.05× 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 #8 largest of 8 steel plants in Spain by listed capacity (Climate TRACE).

Nearby industrial sites

• ALCOA INESPAL, S.A. - LA CORUÑA · Metals Plant · 112,000 t CO₂
• Repsol A Coruna Refinery · Refinery · 1,400,049 t CO₂
• ALUMINIO ESPAÑOL, SA · Metals Plant · 403,000 t CO₂
• San Ciprian alumina refinery · Aluminium Smelter · 1,860,213 t CO₂
• San Ciprian aluminium plant · Aluminium Smelter · 20,116 t CO₂
• Lugo Province · Aluminium Smelter · 94,176 t CO₂

Location

Coordinates 43.51411, -8.16427. View on OpenStreetMap.

Frequently asked questions