Quantification methodology for greenhouse gas emissions for computers and monitors

IEC TR 62921 (10/2016): Version 2.0 https://webstore.iec.ch/publication/25994

Organisation env. accounting

 Scope 1  
 Scope 2  
 Scope 3

Product env. assessment 

 Life cycle approach  

 Use phase only

 GWP

 Energy (focus on secondary energy)

 Other environmental impacts

 KPIs

• Computers and monitors (incl. notebook, desktop, LCD monitor, etc.)

• Providing supporting data for identification of a life cycle stage, subassembly or process that have significant GHG emissions (hot spot)
• Assessing carbon footprint of computers and monitors
• Prioritising reduction efforts across the product life cycle
• Creating a basis for quantifying and reporting CFP performance over time.

• Targeted data collection is performed based on an analysis of the biggest contributors to impacts and to results’ uncertainty. This analysis may also be used to determine the appropriate cut-off criteria.
• Allocation should be avoided; if proven necessary, several methods can be used and are detailed in the document.
• Uncertainty analysis and sensitivity analysis are to be performed
• First party verification is recommended for communication
• An informative list of life cycle database (public database) is provided in Annex C.

• Primary data or aggregated primary data should be used for LCDs, PWBs and ICs. Secondary data should be used for all other data needs.
• When assessing GHG emissions of EE products, the following should be considered:
  • The organisation should use primary data from its suppliers
  • All packaging materials should be considered.
  • Distribution stage should include transportation processes
  • The use phase should be estimated under realistic conditions of use (i.e. use profile based on actual usage patterns, power consumption of the different modes, etc.)
  • End of life should cover impacts generated from transport to the recycling facility, recycling or landfilling of the materials
  • Maintenance, refurbishment and second use are excluded.
• Communication may not necessarily detail results for each life cycle stage.
• Recommended sources for product energy consumption are provided in Annex.

None identified

• [IEC TR 62725] Analysis of quantification methodologies of greenhouse gas emissions for electrical and electronic products and systems
• [IEC 62430] Environmentally conscious design for electrical and electronic products
• [IEC 62474] Material declaration for products of and for the electrotechnical industry
• [IEC 62623] Desktop and notebook computers - Measurement of energy consumption
• [IEC TR 62635] Guidelines for end-of-life information provided by manufacturers and recyclers and for recyclability rate calculation of electrical and electronic equipment
• [ISO 14040] Environmental management - Life cycle assessment - Principles and framework
• [ISO 14044] Environmental management - Life cycle assessment – Requirements and guidelines
• [ISO 14064-1] Greenhouse gases - Specification with guidance at the organization level for quantification and reporting of greenhouse gas emissions and removals
• [ISO/TS 14067] Greenhouse gases -- Carbon footprint of products -- Requirements and guidelines for quantification and communication
• [GHG Protocol] Product Life Cycle Accounting and Reporting Standard
• [ETSI TS 103 199] Environmental Engineering (EE); Life Cycle Assessment (LCA) of ICT equipment, networks and services; General methodology and common requirements
• [ITU-T L.1410] Methodology for environmental life cycle assessments of information and communication technology goods, networks and services