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PAS 2050


Transparency: where the results of life cycle GHG emissions assessment carried ... combustion processes; chemical reactions; refrigerant loss and other fugitive ... – PowerPoint PPT presentation

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Title: PAS 2050

PAS 2050
Nigel Carter, En-Venture Chair, BSI GHG Committee
  • Specification for the assessment of the
  • life cycle greenhouse gas emissions of
  • goods and services

Justification and scope
  • developed in response to broad and industry
    desire for a consistent method for assessing the
    life cycle GHG emissions of goods and services
  • that are released as part of the processes of
    creating, modifying, transporting, storing,
    using, providing, recycling or disposing of goods
    and services

  • ..depends for guidance on ISO LCA standards
  • addresses B2B and B2C need for data
  • treatment of emissions from land use change, and
  • biogenic and fossil carbon sources
  • treatment of the impact of carbon storage in
  • products, and offsetting
  • requirements for the treatment of GHG emissions
  • arising from specific processes
  • data requirements and accounting for emissions
  • from renewable energy generation and
  • claims of conformity.

  • Relevance select GHG sources, carbon storage,
    data and methods appropriate to the assessment of
    the GHG emissions arising from products
  • Completeness include all specified GHG emissions
    and storage that provide a material contribution
    to the assessment of GHG emissions arising from
  • Consistency enable meaningful comparisons in
    GHG-related information
  • Accuracy reduce bias and uncertainties as far as
    is practical
  • Transparency where the results of life cycle GHG
    emissions assessment carried out in accordance
    with this PAS are communicated to a third party,
    the organization communicating these results
    shall disclose GHG emissions-related information
    sufficient to allow such third parties to make
    associated decisions with confidence.

  • a business-to-consumer assessment, which includes
    the emissions arising from the full life cycle of
    the product or
  • a business-to-business assessment, which includes
    the GHG emissions released up to and including
    the point where the input arrives at a new
  • (Including all upstream emissions).

Sources, offsetting units of analysis
  • Assessment period for CO2e 100 years
  • Sources energy use (including energy sources,
    such as electricity, that were themselves created
    using processes that have GHG emissions
    associated with them) combustion processes
    chemical reactions refrigerant loss and other
    fugitive gases operations service provision and
    delivery land use change livestock and other
    agricultural processes waste.

Other sources
  • CO2 emissions originating from fossil and
    biogenic carbon sources
  • Non-CO2 emissions originating from fossil and
    biogenic carbon sources
  • Carbon storage in products
  • Land use and land use change
  • Soil carbon change in existing agricultural
  • Offsetting

System boundaries
  • Alert for product category rules (PCRs)
    developed according to ISO 14025 Type III
  • Section 6 for guidance where PCRs not available
  • Note exclusions human energy consumer travel
    employee commuting animals

Material Contribution Threshold
  • 95 life cycle emissions from functional unit
    (quantified performance of a product system for
    use as a reference unit BS EN ISO 140442006,

Data Quality
  • completeness the percentage of data that are
    measured, and the degree to which the data
    represents the population of interest (is the
    sample size large enough, is the periodicity of
  • sufficient, etc.)
  • consistency qualitative assessment of whether
    the selection of data is carried out uniformly in
    the various components of the analysis
  • reproducibility qualitative assessment of the
    extent to which information about the method and
    data values would allow an independent
    practitioner to reproduce the results reported in
    the study
  • data sources, with reference to the data source

Emissions attributable to
  • co-products, waste, CHP, transport, re-use
    manufacture, use of recycled material and
  • Calculations based on primary data and result
    delivered in Tonnes CO2equivalent

Claims of conformity
  • Self declaration, other or third-party

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