Sept-Îles aluminium plant — Canada
Aluminium Smelter in Canada. Approximate location 50.15749, -66.44347.
Aluminium SmelterCanadaCO₂ estimate (modelled)
Sept-Îles aluminium plant is an aluminium smelter in Canada. Its listed capacity is 630,000 t of alumina/aluminum. 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 Aluminerie Alouette Inc. By capacity it ranks #1 among 11 aluminium smelters in Canada. It emits about 1,338,837 t CO₂e a year from Climate TRACE. That is 1.9% of the CO₂e from the 127 facilities in Canada that have an emissions figure in IndustryAtlas.
Facility data: Climate TRACE v6 (asset-level capacity & CO₂e, CC BY 4.0), id ct-3672964.
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
- Yulin, Shanxi aluminium plant · 1,338,837 t CO₂e/yr · China
- Ketapang Regency · 1,326,339 t CO₂e/yr · Indonesia
- Wuchuan Wuzhengdao Alumina Refinery & Aluminum Smelter · 1,356,800 t CO₂e/yr · China
- Tomago aluminium plant · 1,286,441 t CO₂e/yr · Australia
- Aluminium Oxid Stade GmbH (AOS) Alumina Refinery · 1,278,896 t CO₂e/yr · Germany
Same Climate TRACE subsector; closest non-placeholder modelled CO₂e values. Russia and Belarus excluded.
Operating power plants within 50 km
- Sainte-Marguerite-1-1a · Hydro · 30 MW · 14 km
- Sainte-Marguerite-2 · Hydro · 24 MW · 16 km
PowerAtlas operating assets, ordered by great-circle distance from published coordinates.
In context: how this facility compares
At 630,000 t of alumina/aluminum, Sept-Îles aluminium plant is well above the median aluminium smelter in Canada (314,000 t of alumina/aluminum). 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 1,338,837 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 1.3M t CO₂e/yr (Scope 1), Sept-Îles aluminium plant carries no domestic carbon price — and as a CBAM-covered product, its 1.3M t at the EU CBAM rate (€75/t) is €101M/yr of exposure on EU-bound exports. CBAM share rises from 2.5% (2026) to 100% by 2034. No domestic carbon price — but cement, steel, aluminium, fertilizer and hydrogen exported to the EU face CBAM at €75/t (rising to 100% by 2034).
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 aluminium smelters in Canada
Listed capacity (t of alumina/aluminum), Climate TRACE v6 (asset-level capacity & CO₂e, CC BY 4.0).
Operator
Operated by Aluminerie Alouette Inc.
Local climate
Sept-Îles aluminium plant sits in a subarctic (boreal) climate zone (Köppen Dfc), at 50.2°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 thermal cycling the leading environmental stress.
In this site’s local climate, a bare 150 °C surface sheds about 1486 W/m² to ambient — roughly 1.14× 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 #1 largest of 11 aluminium smelters in Canada by listed capacity (Climate TRACE).
Nearby industrial sites
- Cap Chat Smelter & High Purity Alumina · Aluminium Smelter · 458 t CO₂
- La Haute-Gaspésie Regional County Municipality · Aluminium Smelter · 254,689 t CO₂
Location
Coordinates 50.15749, -66.44347. View on OpenStreetMap.
Frequently asked questions
What type of facility is Sept-Îles aluminium plant?
Sept-Îles aluminium plant is a aluminium smelter in Canada. 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.
What capacity is listed for Sept-Îles aluminium plant?
The open dataset lists 630,000 t of alumina/aluminum of capacity for Sept-Îles aluminium plant.
How much CO₂ does Sept-Îles aluminium plant emit?
The page uses about 1,338,837 t CO₂e/year from the open dataset It ranks #16 among facilities in Canada by estimated CO₂.
Where is Sept-Îles aluminium plant located?
Sept-Îles aluminium plant is in Canada at approximately 50.15749, -66.44347.
Who operates Sept-Îles aluminium plant?
The operator recorded in the open dataset is Aluminerie Alouette Inc.