PAS 2050

Specification for the assessment of the life cycle greenhouse gas emissions of goods and services

PAS 2050 is free to download and use

PAS 2050 free download is a few clicks awayRevised from its 2008 edition, PAS 2050:2011 is a publicly available specification (PAS) providing a method for assessing the life cycle greenhouse gas (GHG) emissions of goods and services (jointly referred to as “products”).

It can be used by organizations of all sizes and types, in any location, to assess the climate change impact of the products they offer.

Originally published in 2008 as the world’s first framework methodology for product carbon footprinting, PAS 2050 is now parent to an expanding family of specifications, providing tailored guidance for individual sectors to enable most effective application of carbon footprinting.

The PAS 2050:2011 revision was coupled with the publication of a guidance document. Also free to download, it assists organizations in better understanding the uses of the specification by offering practical advice to organizations wanting to assess the carbon footprint of their products, identify hotspots and reduce emissions in their supply chain. 

Why should I use PAS 2050?

PAS 2050 free download is a few clicks away

While GHG emissions are often viewed  at global, national, corporate or organizational levels, emissions also come from supply chains within business, between businesses and between nations.

Increasingly, best practice for organizations considers impacts beyond their own corporate activities – extending the scope of their “carbon footprints” to include the impacts of the goods and services they offer. PAS 2050 provides a means for this.

PAS 2050 helps organizations:

  • Carry out internal assessment of the existing life cycle GHG emissions of their products to identify GHG emission hotspots and related cost/energy saving opportunities
  • Evaluate alternative product configurations, sourcing and manufacturing methods, raw material choices and supplier selection processes
  • Devise ongoing programmes aimed at reducing GHG emissions
  • Report on corporate responsibility

For consumers of goods and services, PAS 2050 provides a common basis for understanding the assessment of life cycle GHG emissions when making purchasing decisions and using goods and services.

How is the PAS 2050:2011 revision different?

BSI reviewed and updated PAS 2050 two years after the publication of the original document. The new revision makes the PAS 2050 methodology more relevant and accessible to a wider range of businesses by addressing key queries and issues raised by the product carbon footprinting (PCF) community, as well as the experiences of users since the standard’s first publication in October 2008.

The revision was undertaken to:

  • Clarify ambiguities apparent in the application of the standard
  • Take account of advances in knowledge and understanding that have emerged since PAS 2050 was first published
  • Reflect user experience as much as possible
  • Enhance the level of take-up and application of the PAS 2050 methodology
  • Remove unnecessary differences between the PAS 2050 methodology and other internationally recognized footprint methods – particularly the ones developed by The World Resources Institute/The World Business Council for Sustainable Development (WRI/WBCSD) and ISO (International Organization for Standardization)

The continued co-operation with organizations such as WRI/WBCSD, ISO and the European Commission throughout the PAS revision process ensures that the revised document continues to reflect international PCF theory and practice, and provides a methodology compatible with other internationally-recognized footprint methods to promote best practice and harmonization of standardization effort.

To ease the implementation of PAS 2050 and to help you understand the benefits the methodology delivers, we have compiled some free material:

PAS 2050:2011 Guidance document

The 2008 Guide to PAS 2050 has been updated in line with the changes to PAS 2050 introduced in its 2011 revision. This user-friendly document is more interactive, includes additional examples and more practical advice to help you footprint your product(s), identify hotspots and reduce emissions in your supply chain.

Download the Guide to PAS 2050 

Product carbon footprinting for beginners

Carbon Footprint for Beginners is a new guide for organizations or sectors with limited knowledge of how to calculate the carbon footprint of their products.

Through the use of case studies, the document offers practical guidance on identifying how to get the necessary information on calculating carbon footprints. It can be used in planning, conducting and reviewing a carbon footprint. It provides a simple framework with practical insights on the process, challenges and benefits of carbon footprinting.

The guide is intended to help organizations learn more about the environmental impact of their product or service system and find opportunities to reduce the main impacts within the product's life cycle.

Download the guide 

PAS 2050 Q&As

Take a look at our Q&A sheet to get answers to your most pressing queries.



Read the Q&As  

PAS 2050:2011 Summary of Changes

Read our summary of changes to learn more.



Some of the significant changes arising from the latest PAS 2050 revision are:

  • Provision for the development and application of “supplementary requirements” to enable more specific greenhouse gas emissions assessment within sectors or product groups
  • The inclusion of emissions from biogenic sources (e.g. biomass) and greater clarity on the treatment of recyclable material.

View the changes

PAS 2050 / GHG Product Standard Comparison Factsheet

Understand how PAS 2050:2011 corresponds with the WRI/WBCSD’s GHG Products Standard. 


Download the comparison factsheet 

See the findings of BSI’s review of the use of PAS 2050

Understand how PAS 2050:2011 corresponds with the WRI/WBCSD’s GHG Products Standard. 


Download the PAS 2050 review report 

See the PAS 2050 revision press release

For more information regarding the PAS 2050 revision, find out what we think everyone should know

Read our press release 

The PAS 2050 family is expanding. With new sector-specific PCF specifications in the works and other standards exploring key aspects of GHG management, the PAS 2050 family of documents helps organizations better control their climate change impacts, become more efficient and realize cost savings.

PAS 2050-1:2012 - Supplementary requirements for the cradle-to-gate stages of greenhouse gas assessments of horticultural products

BSI, working with the Dutch Product Board for Horticulture (Productschap Tuinbouw (PT)) and the Dutch Ministry of Economic Affairs, Agriculture and Innovations (Ministry of EL&I) as well as other international experts, have developed supplementary requirements for the horticulture industry that will help apply PAS 2050 to horticultural products.

PAS 2050-1:2012 was published 21 March 2012. The specification offers invaluable assistance and clarity to organizations within the horticulture sector for the assessment and management of the climate change impact of their products. It enables growers to meet requests for GHG emissions information from downstream partners in the supply chain to support their own GHG assessments. Whole life cycle assessments are still achievable through the joint application of PAS 2050-1:2012 and PAS 2050:2011.

Visit the PAS 2050-1:2012 site to learn more and download the document.

PAS 2050-2:2012 – Assessment of life cycle greenhouse gas emissions - Supplementary requirements for the application of PAS 2050:2011 to seafood and other aquatic food products

The second addition to the PAS 2050 family of standards, PAS 2050-2:2012 assists the fisheries industry in its efforts to reduce GHG emissions, improve energy efficiency and save on energy costs.

Published in November 2012, PAS 2050-2 can be used by organizations of all sizes and types, in any location, to assess the climate change impact of both wild caught and farmed fish products with a focus on the cradle-to-gate stages of their life-cycle.

Used in conjunction with PAS 2050:2011, PAS 2050-2 offers supplemental information allowing those engaged in the seafood and aquatic food products industries to more accurately assess their GHG emissions to facilitate reduction in the most effective manner. It includes sector specific requirements and related guidance. 

Visit the PAS 2050-2 site to learn more and download the document.

PAS 2395:2014 - Specification for the assessment of greenhouse gas (GHG) emissions from the whole life cycle of textile products

Together with leading experts from the textile industry, we’ve developed PAS 32395 which provides an internationally applicable specification for the assessment of GHG emissions from the whole life cycle of textile products. 

Used in conjunction with PAS 2050 (the world’s first framework methodology for product carbon footprinting), ISO/TS 14067 or WRI/WBCSD’s GHG Product Protocol, PAS 2395 offers supplemental information allowing those within the textile industry to more effectively assess and reduce their GHG emissions and impacts. It includes sector specific requirements and related guidance. 

Buy PAS 2395

Related specifications and initiatives for GHG emissions:

PAS 2060:2014 – Specification for the demonstration of carbon neutrality

In many markets, carbon neutrality is seen as an important indicator for consumers wishing to choose greener products and services. PAS 2060 specifies requirements to be met by any entity seeking to demonstrate carbon neutrality through the quantification, reduction and offsetting of GHG emissions from a uniquely identified subject.

PAS 2060 was updated in 2014 to recognize improvements in the knowledge and understanding of GHG emissions assessment, reduction and offsetting that have taken place over the first two years of its availability, particularly in regards to event planning.

It continues to underpin reliable, credible claims that the subject of such a claim can indeed be considered carbon neutral.

Read more and buy PAS 2060  

PAS 2070 - Specification for the assessment of greenhouse gas emissions of a city – Direct plus supply chain and consumption-based methodologies

PAS 2070 provides a robust and transparent method for consistent, comparable and relevant quantification, attribution and reporting of city-scale GHG emissions.

This will encourage more holistic GHG assessments, greater disclosure and more meaningful benchmarking to help city decision makers identify key emission sources and their drivers, the carbon dependence of their economy, and opportunities for more efficient urban supply chains.

Read more and download PAS 2070 and the London case study  

ISO and WRI initiatives

Since the publication of PAS 2050 in 2008, both ISO and WRI/WBCSD have embarked on a programme to add quantification of emissions from products and services to their portfolio of specifications.

ISO have developed PD ISO/TS 14067:2013, Greenhouse gases. Carbon footprint of products. Requirements and guidelines for quantification and communication, and WRI/WBCSD have published the Product Life Cycle Accounting and Reporting Standard (aka GHG Protocol Product Standard).

The most recent drafts of the GHG Protocol Product Standard and ISO 14067 were still works in progress at the beginning of the PAS 2050 revision process, but these were made available for comparison with PAS 2050 to the Steering Group. To facilitate this, arrangements were made for experts participating in the development of both these documents to also participate in the revision of PAS 2050.

For more information on these two initiatives and their relationship with the revised PAS 2050, see:

ISO 14067

GHG Protocol Product Standard

Construction products, PAS 2050:2011 and BS EN 15804:2012

BS EN 15804:2012 is the European Standard which has been developed to provide the “Core Rules” for the environmental life cycle assessment for construction products, and reflects the particular considerations of this product category, for example in terms of the extended service lives of construction products relative to fast-moving consumer goods.

BS EN 15804:2012 accords with the provisions for “Supplementary Requirements”, set out in PAS 2050:2011 4.3, and could therefore be used to support the application of PAS 2050:2011 in the construction sector. The Global Warming Potential Indicator provided in “Cradle to Gate” and “Cradle to Grave” Environmental Product Declarations (EPD) complying with BS EN 15804:2012 can be considered to be the same as the GHG emissions provided by PAS 2050:2011.

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