How to Calculate CBAM Embedded Emissions for Aluminium Imports
Aluminium is among the most carbon-intensive CBAM-covered products due to electricity usage during production. Accurate calculation of embedded emissions is critical for EU importers.
This guide explains the CBAM calculation logic for aluminium in practical terms.
What counts as embedded emissions for aluminium?
CBAM embedded emissions include:
- Direct process emissions
- Indirect emissions from electricity consumption
- Emissions within defined system boundaries
Electricity intensity plays a dominant role.
Calculation formula
Embedded emissions = (Direct emissions + Indirect emissions) × Import volume
If actual data is unavailable, default emission factors apply.
Typical default emission factors for aluminium
| Aluminium type | Emission factor (tCO₂ / t) |
|---|---|
| Primary aluminium | 6.5 – 8.5 |
| Secondary aluminium | 0.5 – 1.5 |
Primary aluminium faces significantly higher CBAM costs .
Common calculation mistakes
- Ignoring electricity origin
- Mixing primary and secondary aluminium factors
- Using outdated default values
These errors often lead to overpayment or penalties .