iz · Bench · Tuzla Plant

aluminum · Tuzla · 360,000 t/y

Tuzla Plant

Assan Alüminyum

01 Snapshot

Audit-grade Scope 1 · 2024
108,500
tCO₂ · direct · operator-audited financial-grade
cf-corrected formula (leave-one-plant-out)
92,416
-15% vs. truth
EU CBAM default
540,000
+398% vs. truth
95% conformal prediction interval (formula, leave-one-plant-out, n=19): 50,012 – 170,775 tCO₂ (truth inside ✓)

Open printable audit summary → One-page PDF you can hand to a verifier.

02 Facility data

Company
Assan Alüminyum
Plant
Tuzla Plant
Sector
aluminum
City
Tuzla
Capacity
360,000 t/y
Label source
disclosure
Provenance
Per-plant Scope 1 directly disclosed by operator.
Headline method
cf-corrected formula (capacity × route-EF × cf), evaluated leave-one-plant-out. +82.3% log-MAE reduction vs EU default across the 19 validatable plants.

03 Source citation

Assan 2024 Sustainability Report p76

Combined Tuzla + Dilovası sites. Downstream rolling/foil only — no Hall-Héroult smelting. EF 0.379 t/t Al is ~23× lower than EU CBAM default 8.6 (calibrated for primary smelters).

05 Hyperspectral coverage

5 EnMAP L2A scenes index this plant (2 with <1% cloud cover). Source: DLR EOC STAC. Following Borger et al. (2025), these scenes can yield direct CO₂ and NO₂ plume retrievals at ~30 m spatial resolution.

Lowest cloud cover scenes (showing top 5):

Downloads require a free DLR EOWEB account (see enmap_access_howto.md).

06 Verify / correct

If you're an operator or analyst with a more recent disclosure than what's shown above:

Corrections that include a verifiable public source land within 24 hours. All data is Apache-2.0 licensed; methodology at iz-mrv.pages.dev/paper.