Building a verifier-ready carbon data foundation

As manufacturers prepare for the next phases of the Carbon Border Adjustment Mechanism (CBAM), many organisations are discovering that compliance depends on far more than calculating emissions. The ability to produce reliable, transparent and verifiable carbon data has become a fundamental business capability that supports regulatory reporting, customer expectations and long-term competitiveness.

While reporting obligations are visible, the underlying challenge is establishing a carbon data foundation that consistently produces accurate and traceable information across products, production sites and supplier networks.

Carbon data is an organisational capability

Many organisations initially view carbon reporting as the responsibility of the sustainability department. In practice, high-quality carbon data depends on collaboration across multiple business functions.

Procurement is responsible for engaging suppliers and obtaining emissions data throughout the value chain. Production teams contribute operational information required for emissions calculations. Finance supports governance, internal controls and reporting, while IT provides the systems that collect, structure and maintain data across the organisation.

Without clearly defined ownership and governance, organisations often encounter inconsistent methodologies, incomplete supplier data and reporting processes that are difficult to verify.

Product-level carbon accounting

One of the most significant changes introduced by CBAM is the requirement to calculate emissions at product level.

This requires manufacturers to establish a structured approach to carbon accounting that links production processes, raw materials, energy consumption and supplier information to individual products. Organisations must also define system boundaries, identify relevant production stages and ensure that emissions can be allocated using documented and consistent methodologies.

As product portfolios become more complex, manual spreadsheets quickly become difficult to maintain. Many organisations therefore begin integrating carbon accounting into existing ERP, MES or sustainability platforms to improve consistency and reduce operational risk.

Data quality begins with suppliers

For many manufacturers, supplier engagement represents one of the largest implementation challenges.

Accurate reporting depends on obtaining reliable emissions data from suppliers throughout the value chain. Where supplier information is unavailable or inconsistent, organisations may be forced to rely on assumptions or default values that do not accurately reflect actual production.

Establishing clear communication channels, standardised data requirements and documented methodologies helps improve data quality while strengthening transparency throughout the supply chain.

Supplier engagement should therefore be viewed as an ongoing business process rather than a one-time compliance exercise.

Traceability and documentation

Carbon data must not only be accurate. It must also be explainable.

Every reported emissions value should be supported by documentation that demonstrates how the calculation was performed, which methodology was applied and where the underlying data originated.

This includes maintaining calculation methodologies, activity data, allocation principles, supplier documentation and audit trails that can be reviewed during internal quality assurance or external verification.

Organisations that establish documentation practices early generally experience a more efficient verification process and greater confidence in reported results.

Digitalisation supports long-term compliance

As reporting requirements continue to evolve, digital capabilities become increasingly important.

Rather than treating carbon reporting as a standalone exercise, many organisations are integrating emissions data into existing digital infrastructure. Connecting production systems, ERP platforms and sustainability tools enables more consistent data collection, improves traceability and reduces reliance on manual processes.

A scalable digital foundation also makes it easier to respond to future regulatory developments, customer requests and broader sustainability reporting requirements.

From compliance to competitive advantage

Although CBAM has introduced new regulatory obligations, the organisations making the greatest progress often approach carbon data as a strategic capability rather than a compliance requirement.

Reliable carbon data supports informed decision-making, strengthens customer confidence and improves an organisation's ability to respond to changing regulatory expectations. As sustainability requirements continue to expand across global markets, these capabilities are likely to become increasingly valuable beyond CBAM alone.

Developing a verifier-ready carbon data foundation should therefore be viewed as an investment in long-term operational resilience and market competitiveness rather than simply a response to regulatory deadlines.

How ESP supports manufacturers

ESP supports manufacturers in establishing the governance, methodologies and digital capabilities required to build verifier-ready carbon data. Our services include CBAM readiness assessments, implementation planning, carbon data architecture, digital transformation, methodology reviews and long-term compliance support, helping organisations develop practical solutions that strengthen both regulatory compliance and commercial competitiveness.