Aluminium Oxid Stade GmbH (AOS) Alumina Refinery

Aluminium Oxid Stade GmbH (AOS) Alumina Refinery is an aluminium smelter in Germany. 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 DADCO Alumina & Chemicals. It emits about 1,278,896 t CO₂e a year from Climate TRACE, roughly comparable to the annual emissions of 298k passenger cars.

Facility data: Climate TRACE v6 (asset-level capacity & CO₂e, CC BY 4.0), id ct-43765081.

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 — heat that must be supplied by boilers, furnaces or direct combustion, and losses through uninsulated vessels and piping represent wasted fuel. Removable modular insulation can cut those losses by 80–96%, surface-cooling equipment to ≤45°C, with payback often under 2 years. 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 1,278,896 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 DADCO Alumina & Chemicals.

Local climate

Aluminium Oxid Stade GmbH (AOS) Alumina Refinery sits in a temperate oceanic climate zone (Köppen Cfb), at 53.7°N in the northern hemisphere.

Köppen zone: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid).

Site climate & environmental severity

The local climate sets how fast unprotected steel, protective coatings and the insulation on hot process equipment degrade at this site. It 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 1411 W/m² to ambient — roughly 1.08× the loss at a 20 °C reference; removable insulation recovers about 1340 W/m² of that. 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).

Higher environmental severity is exactly where protective removable insulation pays back most: a sheltered micro-climate slows corrosion, UV and thermal-cycling damage and extends outdoor hardware service life. This is an indicative site-climate context — not a condition assessment of any specific plant or operator.

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

• Stade District · Aluminium Smelter · 78,239 t CO₂
• Lagerdorf Cement Plant · Cement Plant · 175,856 t CO₂
• TRIMET Aluminium SE, Niederlassung Hamburg · Metals Plant · 223,000 t CO₂
• ArcelorMittal Hamburg steel plant · Steel Plant · 822,412 t CO₂
• Hamburg aluminium plant · Aluminium Smelter · 144,904 t CO₂
• Holborn Hamburg Refinery · Refinery · 998,743 t CO₂

Location

Coordinates 53.65281, 9.49385. View on OpenStreetMap.

Heat loss & insulation profile

For a aluminium smelter, the main modular-insulation targets are alumina calciner, casthouse furnaces, hot ducting (electrolysis itself is electric). Typical hot-surface ranges used for screening: 150–1,000 °C.

electrolysis is mostly electricity (Scope 2) + anode process; on-site combustion small - insulation mainly relevant to alumina refining/casthouse.

Indicative recoverable energy

A first-pass insulation screen suggests about 2,600 MWh/year of recoverable heat-loss reduction and about 530 t CO₂e/year of avoided emissions. Screening estimate scaled from installed process-heat projects and surface-temperature reduction data.

See Inzonex Modular Insulation → Run the calculator →

Screening calculation from facility class, capacity and open emissions/energy context. Engineering survey required before procurement.

Safety & the no-regret first step

Start with a thermal survey of valves, flanges, doors and bends. Removable modular insulation keeps maintenance access open while lowering exposed-surface temperature and wasted heat.

Germany: funding & obligation

Funding. Grant 20-60% depending on module and company size; Modul 4 = energy/resource optimization of plants & processes (insulation fits). Foerderwettbewerb round budget ~EUR 60M. official source · verified 2026

Obligation. Mandatory energy audit if avg final energy 2.77-23.6 GWh/yr; certified EnMS/EMS if >23.6 GWh/yr; implementation plans for economically viable measures within 3 months of audit. (applies as a rule above the stated threshold — we do not hold this site's metered energy use). official source · verified 2026
Status: Thresholds are an April-2026 DRAFT amendment (previously 7.5 GWh EnMS) — confirm enacted before publishing.

Programme terms verified 2026-06-18; confirm the current open phase before applying. Eligibility depends on a site's energy use / headcount, which we do not hold — not a per-facility eligibility determination.

Frequently asked questions