Massena aluminium plant — United States
Aluminium Smelter in United States. Approximate location 44.96198, -74.89016.
Aluminium SmelterUnited StatesCO₂ estimate (modelled)
Massena aluminium plant is an aluminium smelter in United States. Its listed capacity is 130,000 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 Alcoa Corp. By capacity it ranks #6 among 8 aluminium smelters in United States. It emits about 276,268 t CO₂e a year from Climate TRACE. That is 0.05% of the CO₂e from the 1,910 facilities in United States that have an emissions figure in IndustryAtlas.
Facility data: Climate TRACE v6 (asset-level capacity & CO₂e, CC BY 4.0), id ct-3673145.
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
- Honglu Aluminium aluminium plant · 273,978 t CO₂e/yr · China
- Sundsvall aluminium plant · 285,482 t CO₂e/yr · Sweden
- Huaxin aluminium plant · 292,244 t CO₂e/yr · China
- Qinao aluminium plant · 292,244 t CO₂e/yr · China
- Pingguo Xian aluminium plant · 255,713 t CO₂e/yr · China
Same Climate TRACE subsector; closest non-placeholder modelled CO₂e values. Russia and Belarus excluded.
Operating power plants within 50 km
- Massena Energy Facility · Gas · 102 MW · 1 km
- William Rutley · Solar · 10 MW · 8 km
- Robert Moses Power Dam · Hydro · 912 MW · 9 km
- Sune Rutley · Solar · 10 MW · 9 km
- Robert H Saunders · Hydro · 1,045 MW · 9 km
PowerAtlas operating assets, ordered by great-circle distance from published coordinates.
In context: how this facility compares
At 130,000 t of alumina/aluminum, Massena aluminium plant is below the median aluminium smelter in United States (187,000 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 276,268 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 276k t CO₂e/yr (Scope 1), Massena aluminium plant carries no domestic carbon price — and as a CBAM-covered product, its 276k t at the EU CBAM rate (€75/t) is €20.8M/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 United States
Listed capacity (t of alumina/aluminum), Climate TRACE v6 (asset-level capacity & CO₂e, CC BY 4.0).
Operator
Operated by Alcoa Corp. All facilities by this operator →
Local climate
Massena aluminium plant sits in a warm-summer humid continental climate zone (Köppen Dfb), at 45.0°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 mild atmospheric environment (estimated ISO 9223 class C2 — Low), with thermal cycling the leading environmental stress.
In this site’s local climate, a bare 150 °C surface sheds about 1436 W/m² to ambient — roughly 1.10× 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 #6 largest of 8 aluminium smelters in United States by listed capacity (Climate TRACE).
Nearby industrial sites
- Arconic Massena LLC · Metals Plant · 740 t CO₂
- Tri-Town Packing Corporation · Food & Beverage
- Potters Industries, Inc. - Potsdam, NY · Metals Plant · 23,267 t CO₂
- Glazier Packing Company Inc. · Food & Beverage
- Azure Mountain Distillery Llc · Food & Beverage
- Ivaco Rolling Mills steel plant · Steel Plant · 42,725 t CO₂
Location
Coordinates 44.96198, -74.89016. View on OpenStreetMap.
Frequently asked questions
What type of facility is Massena aluminium plant?
Massena aluminium plant is a aluminium smelter in United States. 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 Massena aluminium plant?
The open dataset lists 130,000 t of alumina/aluminum of capacity for Massena aluminium plant.
How much CO₂ does Massena aluminium plant emit?
The page uses about 276,268 t CO₂e/year from the open dataset It ranks #384 among facilities in United States by estimated CO₂.
Where is Massena aluminium plant located?
Massena aluminium plant is in United States at approximately 44.96198, -74.89016.
Who operates Massena aluminium plant?
The operator recorded in the open dataset is Alcoa Corp.