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MetricProduct carbon-footprint data quality

Product carbon-footprint primary data share

Measurement answer

What this metric measures

Share of the represented product carbon footprint supported by primary data, retained with the product, period and declared-unit context.

Specification

Metric specification

Result format
Single value
Unit
percent — PACT source-defined reporting unit
Reporting basis
Reference period declared for the product carbon footprint
Aggregation
Aggregate only non-overlapping observations with the same product, declared unit, boundary, reference period and PACT data-model version.
Pillar
Environmental
Topic
Product carbon-footprint data quality
Controlled domain
Products and life-cycle assessment
Entity type
Metric

Reporting boundary

Primary-data coverage for the represented product carbon footprint, with the final absolute PCF excluding biogenic uptake as the denominator.

Verified source occurrences

Framework coverage

This is one canonical metric. The bindings below show every verified framework occurrence without creating duplicate metric pages. Edition, disclosure, role, and relationship remain source-specific.

  • Measurement Authority

    PACT Product Carbon Footprint Methodology

    Source evidence
    Publisher
    WBCSD / Partnership for Carbon Transparency
    Edition
    Version 3.0.3, 18 November 2025
    Requirement
    Not Specified
    Relationship
    Defines Measurement
    Mapping outcome
    Direct Evidence
    Source locator
    Section 4.7, CarbonFootprint.primaryDataShare
    Open official framework source
  • Measurement Authority

    PACT Product Carbon Footprint Methodology

    CarbonFootprint.primaryDataShare
    Publisher
    WBCSD / Partnership for Carbon Transparency
    Edition
    PACT Methodology 3.0.1 and Technical Specifications 3.0.3
    Requirement
    Mandatory
    Relationship
    Maps Source Identity
    Mapping outcome
    Published
    Source locator
    Technical Specifications 3.0.3, Section 4.7, CarbonFootprint.primaryDataShare
    Open official framework source

Value structure

Dimensions and units

Unit
percent — PACT source-defined reporting unit
Reporting basis
Reference period declared for the product carbon footprint

Unit meaning: Report the value in percent for the declared unit and product footprint represented by the PACT exchange record.

Published dimensions

  • Product
  • Declared unit
  • Reference period
  • Data-source class

Calculation method

Formula information

Status
Specified
Formula type
Percentage

Formula

Primary data share = weighted primary-data contribution / absolute PCF excluding biogenic uptake × 100

Use the PACT weighting basis for primary-data contributions and the final absolute product carbon footprint excluding biogenic uptake as the denominator.

Variables

SymbolVariableDefinitionUnit
W_primaryWeighted primary-data contributionThe product-footprint contribution attributed to primary data under the PACT weighting basis.kg CO2e per declared unit
PCF_excl_uptakeAbsolute PCF excluding biogenic uptakeThe final absolute product carbon footprint excluding biogenic carbon-dioxide uptake.kg CO2e per declared unit

Verified sources

Evidence and status sources

Sustopedia checked each record-specific claim directly against primary publisher material. Labels distinguish current measurement authority from future compatibility and corroborative, legal, edition, or method status context. Corroborative evidence can support a stated limitation but cannot establish the core measurement by itself.

Measurement evidence

  • Measurement evidenceChecked 31 August 2026

    Technical Specifications for PCF Data Exchange

    Publisher
    WBCSD / Partnership for Carbon Transparency
    Edition
    Version 3.0.3, 18 November 2025
    Locator
    Section 4.7, CarbonFootprint.primaryDataShare

    Supports: The official PACT Technical Specifications data model supports the reporting identity and field boundary of “Product carbon-footprint primary data share”.

    Open official source

Use with context

Interpretation boundaries

Method disclosures required

Source-edition basis: Technical Specifications for PCF Data Exchange, Version 3.0.3, 18 November 2025.

  • Product and product-footprint identifier
  • Declared unit and declared-unit amount
  • Reference period and geography
  • Product carbon-footprint boundary
  • PACT Technical Specifications version
  • Final absolute PCF excluding biogenic uptake used as the denominator

Record-specific limitations

  • Primary-data share is a data-quality measure, not a greenhouse-gas outcome.
  • Comparisons require compatible product boundaries, reference periods and data-quality rules.

Interpret this metric with the stated reporting boundary, period convention, value shape, and unit. Results prepared with different boundaries or conventions may not be directly comparable.

Measurement evidence supports the core record-specific claims described above. Corroborative evidence can support limitations, while compatibility and status sources provide their separately labelled context. None of these cards by itself determines an organisation's legal applicability, filing readiness, assurance status, or compliance conclusion.