For the Aluminium Sector CBAM Solution
Carbonaz supports the full scope of primary and secondary aluminium production. The Hall-Héroult electrolysis process, PFC emissions, anode consumption and CBAM 2026 benchmark values are defined in the system. The Annex II Scope 2 exemption is applied automatically and the CN code 76xx series is fully supported.
Production Methods
All Routes of Aluminium Production
Customized calculation for every production method, from primary production to recycling, from anode consumption to semi-finished products.
Primary Aluminium (Hall-Héroult)
Alumina production from bauxite ore and electrolysis of molten alumina in electrolytic cells. High electricity consumption (15-17 MWh/tonne) and carbon anode use are typical.
Secondary Aluminium (Recycling)
Production by melting scrap aluminium. A carbon footprint up to 90% lower than primary aluminium. The core route of sustainable production.
Semi-Finished Products
Production of sheet, profile, rod, wire and foil from ingots. Separate emission calculation for rolling, extrusion and casting processes.
Anode Production
Production of pre-baked or Söderberg-type carbon anodes used in the electrolytic process. Emissions are calculated per unit of anode consumption.
Calculation Accuracy
CBAM 2026 Benchmark Data Built In
The European Commission's official aluminium benchmark values are defined in the system. You do not need to enter them manually for the free allocation (FAA) calculation.
| Product | Benchmark | Source |
|---|---|---|
| Primary Aluminium | 1.423 tCO₂/ton | CBAM 2026 Benchmark |
| Secondary Aluminium | 0.091 tCO₂/ton | CBAM 2026 Benchmark |
Source: CBAM 2026 Benchmark (IR 2025/2620) · Carbonaz seed data available in the system
Sector-Specific Capabilities
Built From Scratch for Aluminium
PFC (CF₄, C₂F₆) Emission Calculation
Perfluorocarbon emissions generated during anode effects are calculated automatically. GWP 7,390 is used for CF₄ and GWP 12,200 for C₂F₆.
The Annex II Scope 2 Exemption Is Applied Correctly
For aluminium, Scope 2 is calculated but not included in the CBAM certificate calculation. Carbonaz manages this exemption automatically.
Electrolysis Anode Consumption Process Type
In the Hall-Héroult process, CO₂ emissions per unit of carbon anode consumption are specifically modelled. The anode type (pre-baked or Söderberg) can be selected.
Full Support for the CN Code 76xx Series
7601 (ingot), 7604 (rod/profile), 7605 (wire), 7606 (sheet), 7607 (foil) and other aluminium CN codes are defined in the system.
Electricity Intensity Tracking
Aluminium production is the most electricity-intensive industrial process (15-17 MWh/tonne). The system tracks electricity consumption in detail and multiplies it by grid emission factors.
Renewable Energy Contract Verification
Renewable electricity purchase agreements and guarantees of origin can be uploaded to the system. The green aluminium claim is documented.
Multi-Tier Bauxite and Alumina Supply Chain
Collect data at unlimited depth from your bauxite ore and alumina suppliers. Your supplier's suppliers' data is also included in the chain.
Scrap Metal Carbon Content
The carbon content of scrap metal used in secondary aluminium production is tracked. This benefits producers with a high recycling rate.
Correct Annual Mark-up Penalty Rate
2026 +10%, 2027 +20%, 2028 and beyond +30% are coded correctly. Year-based simulation projects your future cost.
Full CBAM Factor Transition 2026 → 2034
The 0.025 → 1.000 transition schedule is recorded in the system. Project your costs for the coming years.
Immutable Audit Trail · 7-Year Retention
Every data entry, every calculation and every report is recorded so it cannot be changed retroactively. Ready for SGS verification.
Native-Language Interface and Support
Your team works in its own language. The interface, terms, documentation and support are available in multiple languages.
CBAM Factor Phase-In Schedule
From 2026 to 2034: Cost Projection
The CBAM factor rises year over year, reaching a full 100% in 2034. Carbonaz supports every transition year and shows your future cost today with the mark-up simulator.
| Year | CBAM Factor | Meaning |
|---|---|---|
| 2026 | 0.025 | 2.5% of the gross cost is paid |
| 2027 | 0.050 | 5% |
| 2028 | 0.100 | 10% |
| 2029 | 0.225 | 22.5% |
| 2030 | 0.485 | 48.5% |
| 2031 | 0.610 | 61% |
| 2032 | 0.735 | 73.5% |
| 2033 | 0.860 | 86% |
| 2034 | 1.000 | 100% (full CBAM) |
Source: Regulation (EU) 2023/956 Article 31 · Carbonaz seed data
Frequently Asked Questions
Aluminium CBAM Questions
How are PFC emissions calculated in aluminium?
Is there a calculation difference between primary and secondary aluminium?
In aluminium, are Scope 2 electricity emissions included in the certificate calculation?
Can I use my renewable energy contract in the CBAM calculation?
Which aluminium CN codes are supported?
Related Pages
Request a Demo for Aluminium
In a 30-minute demo you can see the calculations specific to your sector, PFC emission tracking and the reporting flow live.