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Price the carbon. Before you price the contract.
"As of January 2026, CBAM is enforced and CSRD Scope 3 reporting is mandatory for large EU companies. Your ERP still assigns zero to the carbon embedded in every purchase order. A supplier offering a 5% discount but running a high-emission supply chain is not saving you money. The Carbon-Adjusted ROI closes this gap. "
7%
of companies have embedded real carbon costs into procurement decisions, not just shadow price models. (KPMG, 2024 benchmark)
EUR 100/t
CBAM penalty per excess tonne of CO2 for non-compliant EU importers since January 2026. Every unpriced tonne is now a direct liability.
THE DECISION STAKES
Your ERP prices the purchase. Not the risk.
"Total Price = Supplier Financial Price + (Carbon Footprint x Carbon Price)." — SPP Carbon Pricing Principles, January 2025, 235 CPOs across 20 sectors.
The Carbon-Adjusted ROI is the procurement metric that accounts for the carbon cost CBAM and CSRD have already made real.
Most shadow price models do not change sourcing decisions. The 7% that embed carbon costs operationally do.
THE DECISION TOOL
Four moves. One decision you can defend.
01
BASELINE
Map Scope 3 Category 1 emissions for your top-spend suppliers, covering 70 to 80% of procurement value. Collect product carbon footprint data at category level. Prioritize suppliers in CBAM-exposed categories and high-volume inputs.
Without emissions data by supplier, the C-ROI calculation is impossible. Start with the top 20% of suppliers by spend. They typically represent 80% of your Scope 3 exposure.
02
SHADOW
Apply the SPP formula to every major sourcing decision: C-ROI Price = Purchase Price + (Carbon Footprint x Shadow Price). Use the WBCSD ICP median of $49/tCO2e as the entry rate. Escalate toward the CBAM certificate price for EU-exposed categories.
The shadow price does not have to be perfect to be useful. Even at $49/t, it consistently reranks suppliers and surfaces the sourcing decisions that carry hidden carbon cost.
03
SCORE
Replace the unit-price scorecard with the C-ROI matrix: Gross Margin, Carbon Debt, Supply Resilience. A supplier with the lowest unit price but the highest carbon intensity no longer wins by default. Embed the C-ROI threshold in your RFP evaluation criteria.
The supplier who provides verified product carbon footprint data and scores well on C-ROI earns preferred supplier status. Preferred status is the commercial incentive that makes supplier decarbonization happen.
04
GOVERN
Update procurement policy and ERP configuration to require verified carbon data for contracts above the materiality threshold. Set a C-ROI floor below which contracts require CFO sign-off. Review and escalate the shadow price annually.
The C-ROI embedded in procurement policy changes supplier behavior faster than any ESG scorecard. When carbon data determines contract award, suppliers invest in measurement.
Ahold Delhaize
EUR 89.4bn revenue. Climate Hubs for Suppliers, launched 2024. Annual Report 2025, February 2026.
90%
of European retailers' total carbon footprint sits in the supply chain. For Ahold Delhaize (EUR 89.4bn revenue FY2024), every procurement decision is a carbon decision. (Changing Markets Foundation / Mighty Earth, March 2025)
Ahold Delhaize did not wait for CSRD to build carbon data infrastructure. In 2024, the group's European retail banners launched open-source climate hubs, giving suppliers direct access to carbon measurement tools and emissions data. The group has committed all suppliers to report on Scope 3 by 2025, and targets a 42% reduction in Scope 3 Energy and Industrial emissions by 2030 from a 29.5 MtCO2e baseline (2020). The infrastructure is the prerequisite. The Carbon-Adjusted ROI is what makes it commercially actionable at the purchase order level.
Ahold Delhaize built the supplier carbon data infrastructure first. The C-ROI follows from the data. The data follows from the procurement requirement.
Download the full case
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Key questions
Does a high carbon shadow price unfairly penalize smaller suppliers who lack the resources for precise Scope 3 measurement?
How do you prevent suppliers from passing the CBAM compliance costs directly back to your procurement budget?
At what threshold does a poor C-ROI score override an otherwise highly profitable gross margin on a contract?
Pre-decision checklist
BASELINE — completed
SHADOW — completed
SCORE — completed
GOVERN — completed
By Fabrice Macarty
This case resonates?
Baseline your top-spend suppliers on Scope 3 emissions. Apply the shadow price to every major RFP. Score on C-ROI, not unit price. Then govern it.
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