Greenhouse Gas Assessment

Greenhouse gas (GHG) assessment, sometimes referred to as ‘carbon footprinting’, is a sub-theme of greenhouse gas management.

GHG assessment standards help organizations identify and locate the climate change impacts (GHG emissions) of their company, product, value chain, community, etc. They outline credible and robust methodologies for calculating GHG emissions and inform the development of reduction improvement programmes. When applied consistently, GHG assessment methodologies allow for greater comparability of approach and/ or products, provide clarity in communicating action on climate change, and scale up existing effort.


Standards for GHG assessment allow organizations 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 on-going programmes aimed at reducing GHG emissions
  • Report on corporate responsibility

Links to standards on GHG Assessment

PAS 2050

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

PAS 2070

Specification for the assessment of greenhouse gas emissions of a city. 

PAS 2080

Carbon management in infrastructure. 

BS EN ISO 14064-1

Greenhouse gases. Specification with guidance at the organization level for quantification and reporting of greenhouse gas emissions and removals.

BS EN ISO 14064-2

Greenhouse gases. Specification with guidance for the validation and verification of greenhouse gas assertions.


Greenhouse gases. Carbon footprint of products. Requirements and guidelines for quantification and communication.

PAS 2050-1

Assessment of life cycle greenhouse gas emissions from horticultural products.

PAS 2050-2

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

PAS 2395

Specification for the assessment of greenhouse gas emissions from the whole life cycle of textile products.

BS ISO 16759

Graphic technology. Quantification and communication for calculating the carbon footprint of print media products.

BS EN 15804

Sustainability of construction works. Environmental product declarations. Core rules for the product category of construction products.

PD IEC/TR 62726

Guidance on quantifying greenhouse gas emission reductions from the baseline for electrical and electronic products and systems.

BS EN ISO 14044

Environmental management. Life cycle assessment. Requirements and guidelines.

BS EN ISO 14021

Environmental labels and declarations. Self-declared environmental claims (Type II environmental labelling).

BS EN ISO 14025

Environmental Labels and Declarations. Quantified environmental performance declarations (Type III Environmental Labelling)-guiding principles and procedures.

Links to other related materials on GHG Assessment

Guide to PAS 2050 

The Guide to PAS 2050: 2011. How to carbon footprint your products, identify hotspots and reduce emissions in your supply chain. 

Product Carbon Footprinting for Beginners

Guidance for smaller businesses on tackling the carbon footprinting challenge. The document can be obtained as a PDF from the BSI website.

PAS 2070 London case study

Application of PAS 2070 - London, UK: An assessment of greenhouse gas emissions of a city.

GHG Corporate Protocol Standard

Standards and guidance for companies and other organizations preparing a GHG emissions inventory.

GHG Product Protocol Standard

Product Life Cycle Accounting and Reporting Standard.


European Commission's Product Environmental Footprinting.


European Commission's Organisational Environmental Footprinting.