CBAM (Carbon Border Adjustment Mechanism) is an EU mechanism for imported high-carbon products: first declare the embedded carbon emissions of the product, then pay the corresponding charge on the difference. Steel (including stainless steel) is within scope.
One-sentence assessment
The single most important thing to do now is turn "carbon emission data per shipment" into a routine ledger — electricity consumption, fuel consumption, the ratio of raw materials to scrap steel, product net weight and the corresponding customs codes. Rule details will be adjusted, but this data set is the basis for all calculations; accumulating it first will not be wasted effort.
What the mechanism governs
- Declared objects: specific goods imported into the EU (steel, aluminium, cement, fertilisers, electricity, hydrogen, etc.), with scope determined by commodity code;
- Declaration content: the product's embedded emissions (direct emissions from the production process + relevant indirect emissions, such as purchased electricity), as well as 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 sources: actual data from the production facility is preferred; default values are used only when actual data is unavailable, 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 texts — this must be stated clearly, because implementing rules have been adjusted continuously in recent years and any second-hand account may be out of date.
Checklist of what exporters actually need to prepare
- Customs code alignment: the same batch of "stainless steel sheet" with different thickness or processing methods has different codes, and whether it is in scope may also differ. First map out the codes for the categories you export;
- Production facility boundaries: which production line, which furnace, which processes are counted in this shipment;
- Energy consumption data: electricity consumption per tonne of steel, fuel consumption (natural gas/coal/coke), emission factors for purchased electricity;
- Raw material data: the ratio of scrap steel to hot metal/alloy materials (the scrap ratio directly affects emission intensity);
- Output basis: must reconcile with customs declaration quantity, net weight and yield, otherwise allocation cannot be calculated;
- Traceability: heat number — batch — order — customs declaration must be linkable, so customers or verifiers can spot-check.
Why "using default values" is usually a worse deal
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 quantity. Conversely, only when actual data can be calculated clearly can optimisation and negotiation be discussed.
Common pitfalls
- Assuming "stainless steel is a high-end material, so it is not covered" — coverage is determined by commodity code, not by whether it is "high-end";
- Waiting until customers ask for data before starting to accumulate it, with the result that only default values can be reported;
- Electricity consumption data covers only melting, missing major energy-consuming processes such as rolling, annealing and pickling;
- Emission factors are directly taken from the national average, which does not match the facility's actual power supply structure;
- Data lacks documented basis, so when someone else takes over it cannot be explained clearly.
What we can do: at the delivery stage, cooperate in providing traceability data on batch and weight basis (heat number, batch, net weight, material certificate accompanying the batch), making it easier to link with the energy consumption data on the production side. As for the specific declaration basis and calculation methods, please refer to the latest official EU rules and the opinions of your customs/compliance advisers.
