Mosjoen aluminium plant — Norway

Mosjoen aluminium plant is an aluminium smelter in Norway. Aluminium smelters use large electric currents to refine alumina into molten aluminium above 900°C, and the hot metal must flow through crucibles and casting equipment. It is operated by Alcoa Norway. It emits about 432,548 t CO₂e a year from Climate TRACE. That is 3.0% of the CO₂e from the 46 facilities in Norway that have an emissions figure in IndustryAtlas.

Facility data: Climate TRACE v6 (asset-level capacity & CO₂e, CC BY 4.0), id ct-3673114.

In context: how this facility compares

Subsector: aluminum. As aluminium smelter, it requires high process heat (typically 600–900°C) for its core industrial operations, supplied by boilers, furnaces or direct combustion. Aluminium smelters use large electric currents to refine alumina into molten aluminium above 900°C, and the hot metal must flow through crucibles and casting equipment.

Capacity & CO₂-intensity comparison computed from Climate TRACE industrial facilities data; sector role based on engineering reference.

What 432,548 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.

Operator

Operated by Alcoa Norway. All facilities by this operator →

Local climate

Mosjoen aluminium plant sits in a subarctic (boreal) climate zone (Köppen Dfc), at 65.8°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 moderately corrosive environment (estimated ISO 9223 class C3 — Medium), with humidity / wetness the leading environmental stress.

In this site’s local climate, a bare 150 °C surface sheds about 1489 W/m² to ambient — roughly 1.15× 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

Nearby industrial sites

• Alcoa Mosjøen · Metals Plant · 425,000 t CO₂
• Sma Mineral As · Lime Plant · 76,331 t CO₂
• Ferroglobe Mangan Norge AS · Metals Plant · 139,730 t CO₂
• Glencore Manganese Norway · Metals Plant · 2,730 t CO₂
• Sev.en GI Mo i Rana steel plant · Steel Plant · 63,261 t CO₂
• Elkem Rana AS · Metals Plant · 298,000 t CO₂

Location

Coordinates 65.84696, 13.18961. View on OpenStreetMap.

Frequently asked questions