CBAM Is Not a Tax - It's a Supply Chain Filter
- 鋼鐵 東育
- 4月27日
- 讀畢需時 2 分鐘

Many still see CBAM as just another “carbon tax.” That understanding is already behind the curve.
CBAM is not about taxation. It is about redefining competitiveness across the global industrial supply chain.
1. The Core Logic: Not Just a Formula
On paper, CBAM looks simple:
CBAM Cost = Certificate Quantity × EU ETS Price
But the real mechanism goes deeper.
CBAM cost is driven by:
The gap between embedded emissions and free allowances
A market-driven carbon price (EU ETS)
A carbon cost adjustment based on the country of origin
Which means:
No domestic carbon pricing → full EU carbon exposure
No verified emission data → higher calculated cost
No preparation → no control
2. The Real Turning Point: Free Allowances Are Disappearing
Many companies still rely on the existence of free allowances.
That is a short-term illusion.
2026: CBAM factor at 97.5%
Gradually declining
2034: 0% (fully removed)
This means:
Today's cost is only the starting point. The real pressure has not yet arrived.
Once free allowances disappear:
Every ton of CO₂ becomes payable
Inefficient production becomes uncompetitive
Cost pressure becomes structural and irreversible
3. The Most Powerful Mechanism: Default Values
The most strategic design of CBAM is not the carbon price.
It is the default value system with penalty multipliers.
If no verified emission data is provided:
2026: +10%
2027: +20%
2028 onward: +30%
More importantly:
Default values do not reflect your actual process
They do not recognize green energy usage
They are based on country-level assumptions
Result:
Low-carbon producers are penalized alongside high-emission ones.
This is not a flaw. It is intentional.
4. Process Defines Cost Structure
CBAM is fundamentally a process-driven cost model.
RouteEmission LevelFuture CompetitivenessBF–BOF (Blast Furnace)HighStructurally decliningEAF (Electric Arc Furnace)Low (0.2–0.7 tCO₂/t)Structural advantage
At current EU ETS levels (~€75/t):
Every additional ton of net CO₂ directly translates into ~€75 of extra cost.
This is no longer optimization. This is survival economics.
5. Hidden Risk: The “Weighted Average” Trap
One overlooked rule:
Weighted average emissions across production lines
If high- and low-emission products are mixed:
Emission advantages are diluted
Low-carbon investments lose effectiveness
Meaning:
Without production segregation, decarbonization efforts lose value.
6. What Companies Must Do - Immediately
CBAM is not optional. It is a threshold.
1. Secure Verified Emission Data
If your emission is below ~2.0 tCO₂/t:
Not declaring it = direct financial loss
2. Lock in Verification Capacity
EU-accredited verifiers will become scarce.
Delay = dependency on default values
3. Rebuild Supply Chains
Long-term competitiveness requires:
EAF transition
Higher scrap utilization
Green energy integration
This is not ESG. This is pricing power.
7. Conclusion: CBAM Is a Repricing Mechanism
CBAM is not about compliance.
It is about who controls the future cost structure.
It does three things:
Turns carbon into a financial variable
Turns low emissions into a pricing advantage
Aligns global supply chains with EU standards
The outcome is clear:
No data → no competitiveness
No transition → no future
Low carbon → pricing power
DONG-YU Insight
CBAM will not change.
Market ranking will.
In the future, stainless steel competition will no longer be only about price and quality, but about who controls carbon cost.


