Duisburg: A steel screw weighs almost nothing and carries almost no political weight, which is exactly why it has ended up at the centre of Europe’s carbon border argument this week.
The European Parliament opened debate in plenary on extending the Carbon Border Adjustment Mechanism to manufactured goods, and the numbers on the table diverge more than the shared political language suggests. The Commission proposed adding 180 downstream products containing significant steel or aluminium. The Council backed a list of 200. Parliament’s environment committee wants 457 product categories. Three institutions, three answers to one question about where a border tax should stop.
The gap matters because CBAM in its current form covers raw and semi-finished materials: iron and steel, aluminium, cement, fertilisers, hydrogen and electricity. A producer inside the Union pays for emissions through the Emissions Trading System. A manufacturer outside the Union can buy the same carbon-intensive metal, turn it into a fastener, a wire spool, a spring or a frying pan, and ship the finished article into the single market without an equivalent charge attaching to the metal inside it.
European producers call that a route around the policy. The evidence for how large that route has become is thinner than the rhetoric, and that is one reason the three lists differ so sharply.
The compliance arithmetic nobody campaigns on
Widening the product list widens the population of firms that must measure and report embedded emissions. The European Economic and Social Committee has cited Commission estimates that between 3,800 and 3,900 small and medium-sized enterprises would acquire new reporting duties under an extension. Those companies rarely own the furnaces that produced their inputs. They must extract emissions data from suppliers several tiers up a value chain that may run through four countries.
Large importers absorb that cost inside existing compliance departments. Smaller ones face a fixed administrative burden spread over a much smaller volume of trade, which is the classic shape of a rule that concentrates rather than distributes competitive advantage. Whether the extension closes a loophole or simply relocates it depends on how usable the default emissions values turn out to be, and on whether enforcement reaches the online platforms that Parliament’s committee wants brought inside the same obligations.
That last point deserves more attention than it has received. Direct-to-consumer imports of manufactured goods have grown faster than the frameworks designed to police them. A CBAM that covers 457 categories at the customs post but leaves parcel flows lightly supervised would produce a measurable administrative cost and an unmeasurable environmental gain.
The export side of the ledger
A second file moves alongside the extension. CBAM equalises costs on imports but does nothing for European producers selling into markets where no carbon price applies. The Commission’s proposed Temporary Decarbonisation Fund would draw contributions equal to 25 per cent of the CBAM certificate revenue each member state collects for emissions declared in 2026 and 2027, then distribute support in 2028 and 2029 to energy-intensive producers that commit to lower-carbon investment.
Parliament’s committee wants that support to start in 2027 and run through 2029, and to reach downstream manufacturers and fertiliser production. The committee approved the extension by 56 votes to 11 and the fund by 59 to 16 in July, according to the Parliament’s own account of the committee stage. Those margins signal comfortable political cover, not analytical consensus.
A fund financed from import levies and paid to exporters invites an obvious question at the World Trade Organization, and the answer will turn on how tightly the conditionality binds recipients to actual emissions reductions rather than to production volumes. The committee also wants unspent money routed to international climate finance instead of back to national treasuries, which converts an industrial instrument into a development one and will not survive every finance ministry unchanged.
Exporters in lower-income countries sit at the other end of this. Parliament’s committee has proposed simplified reporting and technical assistance for least-developed countries. Assistance of that kind works only when it is funded and reachable, and the Commission’s own CBAM guidance still assumes a level of supplier-side data maturity that many of those exporters do not have.
A plenary vote fixes Parliament’s negotiating mandate and nothing more. Trilogues will decide whether the final list sits nearer 200 or 457, and that single figure will determine whether CBAM becomes a genuine carbon instrument or an elaborate customs classification exercise with a climate label attached.
