CBAM (Carbon Border Adjustment Mechanism) is a mechanism set by the EU for imported high-carbon products: first declare the embedded carbon emissions of the product, then pay the corresponding fee based on the difference. Steel (including stainless steel) is within the scope.
One-sentence judgment
The most important thing to do now is to turn "carbon emission data for each shipment" into a regular ledger — electricity consumption, fuel consumption, ratio of raw materials to scrap steel, net weight of product and corresponding customs code. Rule details will be adjusted, but this data set is the foundation of all calculations; accumulating it first will not be wasted.
What the mechanism regulates
- Declaration object: specific goods imported into the EU (steel, aluminum, cement, fertilizer, electricity, hydrogen, etc.), with scope determined by goods code;
- Declaration content: the embedded emissions of the product (direct emissions from the production process + relevant indirect emissions, such as purchased electricity), as well as the quantity;
- Transitional period vs. formal period: during the transitional period, declaration is the main requirement (no payment); from the formal period onward, importers must bear the corresponding cost for the difference between embedded emissions and the EU free allocation;
- Data source: priority is given to actual data from the production facility; default values are used only when actual data cannot be obtained, and default values are usually higher than actual values, meaning higher costs.
The specific scope, calculation methods and timetable are subject to the latest official EU text — this must be stated clearly, because implementation details have been adjusted in recent years, and any second-hand account may be outdated.
Checklist for exporters to actually prepare
- Customs code alignment: the same batch of "stainless steel plate" with different thickness or processing method has different codes, and whether it is in scope may also differ. First clarify the codes for the categories you export;
- Production facility boundary: which production line, which furnace, which processes are counted in this batch;
- Energy consumption data: electricity consumption per ton of steel, fuel consumption (natural gas/coal/coke), emission factor of purchased electricity;
- Raw material data: ratio of scrap steel to hot metal/alloy materials (scrap ratio directly affects emission intensity);
- Output basis: must match customs declaration quantity, net weight, and yield, otherwise allocation cannot be calculated;
- Traceability: heat number—batch—order—customs declaration form can be linked, and customers or verifiers can spot-check.
Why "using default values" is usually a bigger loss
Default values are set at a relatively conservative level for the industry. If your actual emissions are lower than the default values (for example, electric furnace short process, high scrap ratio), using default values means paying for a higher carbon amount. Conversely, only when actual data can be calculated clearly can optimization and negotiation be discussed.
Common pitfalls
- Assuming "stainless steel is a high-end material, so it is not included" — coverage is determined by goods code, not by "high-end or not";
- Waiting until customers ask for data to start accumulating, resulting in only default values being reported;
- Electricity consumption data only counts melting, missing major energy-consuming processes such as rolling, annealing, and pickling;
- Emission factors directly apply the national average, which does not match the facility's actual power supply structure;
- Data lacks documentation of the basis, so when someone else takes over, it cannot be explained clearly.
What we can do: cooperate in providing traceability data on batch and weight basis (heat number, batch, net weight, material certificate accompanying the batch) at the delivery stage, to facilitate connection with your production-side energy consumption data. As for the specific declaration basis and calculation methods, please refer to the latest official EU rules and the opinions of your customs declaration/compliance advisor.
