ISO, GHG Protocol Launch Working Group to Develop Unified Product-Level GHG Accounting Standard

Why It Matters

A single, globally accepted product carbon footprint methodology will lower compliance costs for multinational firms and give policymakers a reliable data foundation for climate regulations.

Key Takeaways

• Joint Working Group formed by ISO and GHG Protocol.
• Over 450 submissions from 50+ countries shaped the group.
• Members include Unilever, Amazon, Volkswagen, BMW, SAP.
• Goal: unified product carbon footprint standard for global markets.
• Standard will aid CBAM compliance and supply‑chain decarbonization.

Pulse Analysis

The landscape of greenhouse‑gas accounting has long been splintered across regional guidelines, sector‑specific protocols, and voluntary frameworks. This patchwork creates costly duplication for firms that operate in multiple jurisdictions and hampers comparability for investors and regulators. Recognizing these inefficiencies, the International Organization for Standardization and the Greenhouse Gas Protocol formalized a strategic partnership last year, pledging to align their existing standards and co‑develop new ones. The newly announced Joint Working Group represents the next concrete step toward a single, coherent methodology for measuring product‑level emissions worldwide.

Corporations are increasingly seeking product‑level carbon footprints to inform sourcing, design, and pricing decisions, especially as Europe’s Carbon Border Adjustment Mechanism and similar policies gain traction. A harmonized standard will give companies a consistent metric to benchmark suppliers, set science‑based targets, and report to investors with confidence. Moreover, regulators will benefit from comparable data when enforcing border‑adjustment taxes or incentivizing low‑carbon products. By reducing the administrative burden of juggling multiple reporting schemas, the standard is expected to accelerate supply‑chain decarbonization and unlock new green‑product markets.

The Joint Working Group draws on a diverse pool of more than 410 organizations, including academic experts, government agencies, accounting bodies, and industry leaders such as Unilever, Amazon, Volkswagen, and SAP. This breadth ensures that the emerging standard reflects real‑world operational challenges while maintaining scientific rigor. Although a final publication date has not been set, the group’s mandate includes drafting a draft for public comment within the next 12‑18 months. Once adopted, the unified product‑level framework could become the reference point for corporate sustainability reporting, influencing everything from ESG disclosures to investment analysis.