PACT (WBCSD)
PACT Methodology V3 and Technical Specifications for PCF Data Exchange V3 (WBCSD)
Topic : Climate · Level : Sector-specific
Today
Methodology V3 released 30 Apr 2025, mandatory for new PACT footprints. Data exchange spec at V3.0.3 (18 Nov 2025).
Summary
PACT, led by the WBCSD, sets how to calculate product carbon footprints and exchange them between companies. Methodology V3 (April 2025) applies to all new footprints. A standard data model and API let suppliers share PCFs once with many buyers.
Who is concerned
- Turnover
- not specified (voluntary standard)
- Employees
- non précisé
- Listed company
- non précisé
- Sectors
- All sectors
- Triggering activities
- Buyer uses a PACT-conformant platform
- Supplier shares footprints by API
- Extraterritorial reach
- No
Data flows across borders between supplier and buyer systems.
- Examples
- Chemicals supplier sending PCFs to a brand
- Tier 1 passing Tier 2 data upstream
What the law requires
- Calculate PCFs with PACT Methodology V3
- Exchange through a standard data model and API
- Disclose primary data share and data quality
- Follow verification pathways for PCFs
Penalties
None; voluntary framework. Buyers set the consequences.
What this changes for a supplier in China
Large buyers ask suppliers to send footprints in the PACT format, by API. A supplier able to produce and share PACT-ready data avoids rework for each customer.
Expected evidence
- PCF in PACT data model
- Primary data share per footprint
- Verification status of the PCF
Tiers : Tier 1-2