İskenderun Integrated Works

İsdemir

01 Snapshot

Audit-grade Scope 1 · 2024

10,663,364

tCO₂ · direct · operator-audited financial-grade

cf-corrected formula (leave-one-plant-out)

11,167,535

+5% vs. truth

EU CBAM default

10,070,000

-6% vs. truth

95% conformal prediction interval (formula, leave-one-plant-out, n=19): 6,043,399 – 20,636,373 tCO₂ (truth inside ✓)

95% interval restricted to steel-BF/BOF calibration set: 9,797,362 – 12,729,328 tCO₂ (truth inside ✓ · undercoverage caveat at small n)

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

02 Facility data

Company: İsdemir
Plant: İskenderun Integrated Works
Sector: steel
City: İskenderun
Capacity: 5,300,000 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

Erdemir 2024 Entegre Faaliyet Raporu p115 (KGK)

Erdemir IAR archive

Audit-grade per-asset İsdemir Scope 1 (line item: "Kapsam 1 (ton COeq) 10.663.364")

04 Satellite cross-check

The TROPOMI flux-divergence catalog of Beirle et al. (2023, ESSD) lists a NOx source within 5.5 km of this plant:

0.572 ± 0.164 kg NOx/s (colocated source: İskenderun Atlas Termik Santrali)

NOx is an activity proxy independent of operator disclosure. A catalog hit within 15 km means the plant (or its colocated captive power) is bright enough in TROPOMI to register globally. This row is in the data/beirle_match_audit_grade.csv join shipped with the bench.

05 Hyperspectral coverage

3 EnMAP L2A scenes index this plant (0 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):

2025-12-28T08:58:01Z · cloud cover 2% · ENMAP01-____L2A-DT0000171058_20251228T085801Z_018_…
2024-08-06T09:01:06.298104Z · cloud cover 7% · ENMAP01-____L2A-DT0000087835_20240806T090104Z_012_…
2024-08-06T09:01:01.846021Z · cloud cover 23% · ENMAP01-____L2A-DT0000087835_20240806T090059Z_011_…

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:

Open a pull request adding a row to data/tr_facility_known_emissions.csv (source).
Or email hi@barisgunaydin.com with the source PDF.
Or use the claim-your-facility form on the bench page.

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.