CBAM and Mexico: What Cemex, Ternium, and Mexican Steel and Cement Exporters Must Do
Mexico's CBAM exposure is dominated by three companies: Cemex (cement, with significant European operations and EU-bound shipments from Mexican plants), Ternium (steel, integrated mills in Pesquería and Veracruz), and AHMSA (steel, in financial restructuring). Mexico does not currently have a national carbon price eligible for CBAM Article 9 deduction. The Mexican carbon tax (impuesto al carbono) covers fossil fuel sales but is set at a level well below the threshold for CBAM equivalence.
Mexico CBAM Exposure by Sector
| Sector | Key companies / installations | EU export volume | Estimated annual CBAM liability |
|---|---|---|---|
| Cement clinker | Cemex (Tepeaca, Tamuín, Mérida), Holcim Apasco, Cooperativa La Cruz Azul | 500,000–1,200,000 t/year | EUR 27–65M |
| Steel (BF-BOF integrated) | Ternium (Pesquería, Veracruz), AHMSA (Monclova), ArcelorMittal Mexico | 500,000–1,500,000 t/year | EUR 71–214M |
| Steel (EAF, rebar, downstream) | DeAcero, Grupo Simec, Tubacero | 300,000–700,000 t/year | EUR 14–32M |
| Fertilisers (urea) | Grupo Fertinal, Pemex Fertilizantes, Agrogen | 100,000–300,000 t/year | EUR 15–46M |
Cemex — The Mexico CBAM Story
Cemex is one of the world's three largest cement companies, with operations across Mexico, the US, Europe, and Asia. The Mexico-to-EU CBAM exposure is specifically about Mexican-produced clinker shipped to EU markets — a smaller subset of Cemex's total operations but commercially significant. Cemex has been investing heavily in alternative fuels and clinker substitution at its Mexican plants, particularly Tepeaca and Tamuín. Documenting actual values for Mexican-origin clinker captures these investments and avoids the 0.81 tCO2/t default. See the cement calculation guide.
Ternium and the Pesquería Steel Mill
Ternium's Pesquería integrated steel complex (near Monterrey) is one of the most modern integrated steel mills in the Americas. Built 2013, it uses DRI-EAF technology rather than traditional BF-BOF — meaning actual embedded emissions are typically 0.80–1.20 tCO2/t versus the 2.18 EU default. The DRI-EAF route is one of the lowest-carbon integrated steelmaking routes available; documenting actuals for Pesquería-origin steel exported to the EU captures a per-tonne saving of EUR 65–90 at current ETS prices. See the steel calculation guide.
Why Mexico's EU Exposure is Smaller than Headline
Mexico's largest export market is the United States, dominantly. EU-bound exports across CBAM sectors are a smaller share of Mexican production than for Türkiye, India, or China. The Mexican CBAM exposure is therefore concentrated in specific contracts and product lines — Cemex's European cement supply, Ternium's specialty steel exports to EU automotive, AHMSA's continuing EU contracts. The aggregate EUR 130–360M annual exposure is meaningful but not at the scale of major Asian exporters. The strategic importance for Mexican producers is less about defensive CBAM cost mitigation and more about positioning for the US-EU GASSA negotiations and any future Mexico-EU CBAM equivalence framework.
Frequently Asked Questions
Does Mexico have a carbon price eligible for CBAM deduction?
No. Mexico has a federal carbon tax (~EUR 2.5/tCO2) but the rate is far below the threshold for CBAM Article 9 deduction. A pilot national ETS is in development but not operational at scale.
Which Mexican companies face the highest CBAM exposure?
Cemex (cement clinker exports), Ternium (Pesquería integrated steel), AHMSA (Monclova steel), and the major fertiliser producers (Grupo Fertinal, Pemex Fertilizantes). Cemex and Ternium together account for the majority of Mexican CBAM exposure.
Does Mexican EAF rebar steel benefit from documenting actuals?
Yes — significantly. Mexican EAF rebar producers (DeAcero, Grupo Simec) operating on grid electricity with significant renewable share (Mexican grid factor ~0.40 tCO2/MWh) can document actual values of 0.50–0.80 tCO2/t versus the 2.18 default. The per-tonne saving is EUR 90–110.
How does Ternium's DRI-EAF route compare for CBAM?
DRI-EAF is structurally lower-carbon than BF-BOF. Ternium Pesquería's natural-gas-based DRI feeding into EAF produces steel at 0.80–1.20 tCO2/t — well below the 2.18 default. Documenting actuals saves EUR 65–90 per tonne shipped to the EU.
Where can Mexican manufacturers find ISO 14065 accredited CBAM verifiers?
EMA (Entidad Mexicana de Acreditación) accredits Mexican verification bodies. Many Mexican exporters engage international ISO 14065 firms with regional offices — Bureau Veritas Mexico, SGS Mexico, TÜV SÜD Mexico, DNV. See the verifier directory.
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