The EU's Carbon Border Adjustment Mechanism (CBAM) is no longer a future concern. Phase 1, which required importers to report embedded emissions, ended in December 2025. Phase 2, which begins collecting the actual border tax, starts in January 2026.
For Ontario manufacturers exporting steel, cement, aluminum, fertilizers, electricity, or hydrogen to the EU, this changes everything.
How CBAM works
CBAM is designed to prevent "carbon leakage" — the phenomenon where companies move production to countries with weaker climate regulations to avoid carbon costs. The mechanism works by imposing a border tax on imports that reflects the carbon cost EU producers already pay under the Emissions Trading System (ETS).
Here's the calculation:
- Determine the embedded emissions of your product (tonnes of CO₂e per tonne of product)
- Subtract any carbon price already paid in the country of origin (e.g., Canada's federal carbon tax)
- Multiply the remainder by the EU ETS price (currently ~€65/tonne)
- The result is the CBAM certificate cost per shipment
If you can't provide verified embedded-emission numbers, the EU will use default values — which are typically much higher than actual emissions. For steel, the default is based on the global average, which includes coal-intensive production from China and India.
The Hamilton problem
Hamilton, Ontario is home to two of Canada's largest steel producers: ArcelorMittal Dofasco and Stelco. Together, these facilities emit over 6 million tonnes of CO₂e annually. They also export significant volumes to European customers.
Under CBAM, every shipment of steel to the EU needs a verified embedded-carbon declaration. That declaration must include:
- Direct emissions (Scope 1) from the production process
- Indirect emissions (Scope 2) from purchased electricity
- Emissions from precursors (iron ore, coking coal, scrap)
- Carbon price already paid in Canada
The calculation isn't simple. Blast furnace steel has a different embedded carbon profile than electric arc furnace (EAF) steel. Scrap-based production has lower embedded emissions than virgin-iron production. The emission factors vary by plant, by process, and by input source.
What "verified" means
The EU requires that embedded-emission declarations be verified by an accredited verifier. This means:
- Data must be facility-specific, not industry averages
- Methodology must be transparent — traceable from source documents to final number
- Emission factors must be sourced — ECCC, IPCC, or supplier-specific
- Audit trail must be complete — who calculated what, when, using which data
A spreadsheet with hardcoded values doesn't meet this standard. A consultant's annual report doesn't either — it's 365 days stale by the time the verifier reads it.
The cost of using default values
If you can't provide verified embedded-emission numbers, the EU applies default values. For steel:
- Default embedded emissions: ~1.85 t CO₂e per tonne of steel (global average)
- Actual Ontario emissions: ~1.2–1.5 t CO₂e per tonne (depending on process)
- EU ETS price: ~€65/tonne
Using defaults vs. actual numbers: €23–€42 per tonne of steel exported. For a facility shipping 100,000 tonnes annually, that's €2.3M–€4.2M in unnecessary CBAM certificates.
The fix: produce verified, facility-specific numbers. The data exists — it's in your fuel slips, MTCs, and utility bills. You just need the infrastructure to extract it.
What VantageHSG does
Our CBAM optimization module:
- Ingests your production data — fuel consumption, electricity, raw material inputs
- Calculates facility-specific embedded emissions using mass balance and ECCC emission factors
- Applies Canadian carbon tax credit — reduces your CBAM liability
- Produces verifier-ready declarations — formatted for EU CBAM reporting requirements
- Updates continuously — not annually, not quarterly, but as new data arrives
If you're an Ontario steel or cement exporter to the EU, and you're still using default values, you're overpaying.
VantageHSG provides CBAM optimization for Ontario manufacturers. Learn more or request a consultation.