CBAM's Carbon Challenge: Product Data Is Non-Negotiable

The request for product-level carbon data is landing on your desk more often. It might be driven by new regulations like the Carbon Border Adjustment Mechanism (CBAM), or by internal teams wanting to build a product lifecycle assessment (LCA). So you turn to your suppliers, ask for the data, and get… a corporate sustainability report, a vague assurance, or complete silence.

You’re left in a difficult position. You can’t fulfil your reporting obligations, and you can’t get the granular insight needed to make meaningful reductions. Your suppliers, meanwhile, are often just as stuck; they either don’t have the data or don’t understand exactly what you need. Progress grinds to a halt before it even begins.

Why the pursuit of perfection stalls progress

Many sustainability and procurement teams fall into the perfect data trap. They set out to get 100% accurate, product-specific carbon footprints from every supplier for every component. While admirable, this approach is almost guaranteed to fail. It creates an impossible administrative burden and asks for a level of maturity that most supply chains simply do not have yet.

The problem is compounded by a communication gap. A request for a “product carbon footprint” is too vague. Are you asking for cradle-to-gate, cradle-to-grave? To what standard? Without clear guidance, suppliers are left guessing. The result is often low-quality or inconsistent data that takes months to collect and even longer to clean up.

The old way of working-sending mass surveys via spreadsheet and hoping for the best-doesn’t scale. It burns out your team and fatigues your suppliers, all for data that rarely leads to action.

Trying to manage this process manually for thousands of products across hundreds of suppliers is a recipe for burnout. The focus shifts from decarbonisation to data entry, and the strategic goal is lost in a sea of spreadsheets.

What good actually looks like

Breaking this cycle means shifting the goal from perfect data to decision-grade data. Good doesn’t mean having a precise, third-party verified PCF for every single screw and washer. It means having a clear, prioritised view of your emissions hotspots and a credible plan to address them.

A successful programme focuses on the vital few. You know which products, components, or suppliers are responsible for the majority of your purchased emissions. For this critical group, you establish a direct, collaborative dialogue to get better data and, more importantly, to support their reduction efforts.

For the long tail of remaining suppliers, you use a pragmatic, blended data approach. This means using reliable, spend-based or activity-based estimates to fill the gaps. This ensures you have a complete, auditable picture of your footprint in weeks, not years. The conversation changes from demanding data to working together to improve its quality over time, always with the goal of reduction in mind.

A practical playbook for getting started

Moving from theory to practice requires a clear, staged approach. Instead of trying to boil the ocean, focus your energy where it will have the greatest impact.

First, map and prioritise. Use your procurement spend data to identify your highest-impact suppliers, particularly those in sectors affected by regulations like CBAM-think steel, aluminium, cement, and chemicals. Don’t aim for universal coverage from day one. A focused list of 20 to 50 key suppliers is a far more effective starting point than a vague plan to survey thousands.

Second, start the right conversation. Frame your data request in commercial terms. This isn’t just a sustainability exercise; it’s about ensuring continued market access and building a more resilient supply chain. Explain why you need the data and be clear on the format and methodology. For your most strategic partners, this should be a conversation, not just a form.

Third, be pragmatic with your data strategy. For your top-tier suppliers, work with them directly to get the best possible data. For everyone else, leverage a platform that can generate credible estimates and normalise the varied data you receive. A good system allows you to blend primary supplier data with robust secondary data, giving you a complete view without endless manual work. It turns messy, inconsistent inputs into a single source of truth for decision making.

For example, a UK manufacturer of industrial machinery needed to understand the embedded carbon in its steel components. Instead of surveying all 250 suppliers, they identified the top 20 who accounted for 80% of their steel spend. They engaged these suppliers in workshops to explain the CBAM requirements and co-develop a data collection plan. For the remaining 230, they used a spend-based calculation to ensure full coverage for their report, creating a clear path to improve data quality over time where it mattered most.

Your best next step

The goal of all this isn't just better accounting; it's to enable better decisions that lead to real-world decarbonisation. The data is simply the starting point.

If you do one thing this quarter, don’t launch another mass survey. Instead, identify your top 10 suppliers by spend in a single CBAM-affected category. Get your procurement team in a room with their commercial counterparts from those suppliers. Your objective for that first meeting is simple: to signal that this is a shared commercial priority and to understand their current capabilities. That single conversation will achieve more than a hundred ignored emails.