Transparency of the carbon footprint information
The product carbon footprint should account for all the significant emissions sources along a product’s or a service’s life cycle. The exclusion of life cycle stages, processes, inputs, or outputs is only permitted if they do not significantly change the overall conclusions of the PCF.
Any exclusions must be clearly stated and reported as part of the PCF, together with the threshold that has been used to determine whether an emissions source is significant (significance threshold). The reasons for exclusion and their implications must also be explained.
We strongly recommend that an accredited third-party conduct an assurance or verification of the PCF data, or alternatively, that a critical review or a peer review is conducted. If there is no widely used methodology for calculating the PCF for a specific type of product or service, or if the methodology is under development, collaboration with a credible institution or organization is recommended for ensuring the reliability and transparency of the calculation methodology.