GHG Desktop Management Services (DMS) Factsheet

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Please note that the factsheet below was developed based on a draft version of the GHG Protocol ICT Sector Guidance. The factsheet will be soon updated based on the final version of the Guidance (published in July 2017) to integrate any changes

GHG Protocol Product Standard – Desktop Management Services (DMS)​
Name of Initiative/Methodology

GHG Protocol Product Life Cycle Accounting and Reporting Standard ICT Sector Guidance – Chapter 3 – Guide for assessing GHG emissions of Desktop Managed Services

Link to the latest published version

GHG Protocol ICT Sector Guidance (01/2013): Draft version 1.1

Developed by

Greenhouse Gas Protocol Initiative
History and Status
  • Work started in 2011
  • Issued as a draft for public comment in January 2013
Involved companies / parties
  • Convening Secretariat: WRI, WBCSD, GeSI, Carbon Trust

Organisation env. accounting

 Scope 1  
 Scope 2  
 Scope 3

Product env. assessment 

 Life cycle approach  

 Use phase only

Cradle to grave for final products

Cradle to gate for intermediate products


 Energy (focus on secondary energy)

 Other environmental impacts


System(s) covered by the methodology
  • Desktop Managed Services, which comprise:
    • Service Desk
    • End User Device
    • Desk Side Services
    • End User Infrastructure
    • Service Delivery Management
  • Providing supporting data for identification of a life cycle stage, subassembly or process that have significant GHG emissions (hot spot)
  • Assessing energy use and GHG emissions of a DMS
  • Prioritising reduction efforts across the product life cycle (from a service provider or user perspective)
Generic features
  • All stages other than the use stage may be grouped together (embodied emissions)
  • Critical review by a first or third party is required
  • Offsets, avoided and delayed emissions are not to be included in the inventory results
  • Functional unit:
    • For all final products, the unit of analysis is defined as a functional unit

    • For intermediate products where the eventual function is unknown, the unit of analysis is defined as the reference flow

  • Cradle-to-gate and gate-to-gate inventory results should be reported separately (if not limited by confidentiality)
  • Companies shall disclose and justify any exclusions of attributable processes in the inventory report
  • Companies shall collect primary data for all processes under their ownership / control
  • Companies shall assess the data quality of activity data, emission factors, and/or direct emissions data
ICT-specific features
  • The scope of the DMS being assessed shall be clearly described, e.g. based on the examples provided.
  • The functional unit needs to define the magnitude (e.g. number of users supported), the duration (e.g. length of service) and the quality (e.g. type of support, response times) of the service.
  • The decommissioning / standing down of support teams at service end may not necessarily be considered a major factor to generation of emissions but screening should be employed to ascertain materiality.
  • Some processes may be excluded from the GHG emissions calculation, such as: upstream emissions of capital goods (e.g. vehicles used for support staff transportation, buildings that support the service), lighting and heating for users of the DMS, travel of support staff which are not directly related to the provision of DMS.
  • The allocation of DMS between independent products should involve pro-rating of usage of the shared component. Recommended allocation methods are provided for several examples of shared components.
  • Technical refresh (at different times or stages of parts of the estate) should be accounted for by assuming a level of refresh for the duration of the service (i.e. usually duration of contract) for different categories of equipment. If the refresh is different in practice from what planned, this should be treated as a new service and recalculated.
  • Refer to guidance defined in other chapters of the GHG Protocol ICT sector guidance e.g. for requirements on hardware or cloud and data centre services.
Examples of implementation / experience feedback

None identified – to be filled later

Interaction with other methodologies
  • [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 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
  • [ISO 14040] Environmental management - Life cycle assessment - Principles and framework
  • [ISO 14044] Environmental management - Life cycle assessment – Requirements and guidelines
  • [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
  • [EU Energy Star]

How do I use this methodology? Ask for support!

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