The PAS2050 (Publicly Available Specification 2050) standard was published on 29th October 2008 by BSI British Standards, the Carbon Trust and Defra. It provides companies with the tools to analyse a product’s life cycle and assess embedded greenhouse gas emissions, from sourcing raw materials through packaging and distribution to consumer use and disposal impacts. It is anticipated that this could be a first step towards an internationally agreed standard for measuring greenhouse gas emissions.
The PAS2050 specification and a user guide can be downloaded free of charge from the links on this page. It is also available from the BSI website, although registration is required to access it. The Defra announcement of the standard can be found here.