Understanding CBAM: What manufacturers need to know
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What is CBAM?
The Carbon Border Adjustment Mechanism (CBAM) is a regulation introduced by the European Union as part of the European Green Deal. Its objective is to reduce carbon leakage by ensuring that imported products are subject to comparable carbon costs as products manufactured within the European Union.
Historically, European manufacturers have been required to account for carbon emissions through the EU Emissions Trading System (EU ETS). CBAM extends similar carbon pricing principles to selected imported goods, helping create a more level playing field between EU and non-EU producers while encouraging lower-carbon manufacturing globally.
Rather than viewing CBAM solely as an environmental regulation, manufacturers should recognise it as a new trade requirement that directly influences access to the European market.
Which products are currently covered?
CBAM currently applies to selected carbon-intensive sectors, including:
Iron and steel
Aluminium
Cement
Fertilisers
Hydrogen
Electricity
The regulation also covers certain precursor materials and downstream products, and the scope is expected to expand over time as CBAM continues to develop.
Manufacturers should therefore continuously monitor regulatory developments, particularly if they operate in sectors that may become subject to future reporting obligations.
Why does CBAM matter for manufacturers?
For many manufacturers, CBAM represents far more than an additional reporting requirement.
Compliance depends on the ability to calculate product-level carbon emissions, collect reliable supplier information and document the methodologies used throughout the calculation process.
As a result, CBAM affects multiple business functions simultaneously, including procurement, production, sustainability, finance, IT and executive management.
Organisations that begin preparing early are generally better positioned to respond efficiently to customer requests, future verification requirements and evolving European sustainability regulations.
Actual values versus default values
One of the most important concepts within CBAM is the distinction between actual values and default values.
Actual values are calculated using emissions data from production processes supported by recognised methodologies and documented evidence. These values provide the most accurate representation of a product's embedded emissions.
Default values, published by the European Commission, are intended as a fallback when actual emissions data cannot be demonstrated. Because these values are intentionally conservative, they may lead to higher reported emissions and, consequently, higher future CBAM costs. Recent guidance from the European Commission also emphasises the importance of understanding when actual values should be used instead of default values.
For many manufacturers, investing in robust carbon accounting therefore represents both a compliance requirement and a commercial opportunity.
Carbon data is becoming a strategic business capability
Many organisations initially approach CBAM as a sustainability initiative.
In practice, successful implementation depends on establishing an organisation-wide carbon data capability.
Manufacturers must be able to calculate Specific Embedded Emissions (SEE) at product level, define consistent system boundaries, document allocation methodologies, maintain complete audit trails and engage suppliers throughout the value chain.
These capabilities not only support CBAM reporting but also create a foundation for future sustainability initiatives such as Product Carbon Footprints (PCF), Environmental Product Declarations (EPDs) and broader ESG reporting.
Verification should begin before reporting
Preparing for verification should not be considered the final step of CBAM implementation.
Verification readiness begins when organisations establish their carbon data framework.
Every emissions value should be supported by documented methodologies, traceable activity data and transparent evidence that enables an independent verifier to understand how reported values have been produced.
Developing these capabilities early significantly reduces implementation risk while improving reporting quality and operational efficiency.
Preparing for long-term compliance
As CBAM continues to evolve, manufacturers should move beyond short-term reporting and focus on building long-term organisational capabilities.
This includes establishing governance structures, strengthening supplier engagement, improving digital data management and integrating carbon accounting into existing business processes.
Organisations that invest in these capabilities today will be better prepared not only for future CBAM developments but also for the broader transition towards increasingly data-driven sustainability reporting.
How ESP supports manufacturers
ESP supports manufacturers throughout the entire CBAM implementation journey.
Our advisory services include readiness assessments, implementation planning, product-level carbon accounting, carbon data architecture, supplier engagement, methodology reviews, digital transformation and verification readiness.
By combining regulatory expertise with practical implementation experience, we help organisations establish verifier-ready carbon data that supports both regulatory compliance and long-term competitiveness.