GHG Methodology Statement

Green Economy Hubs support Green Economy Leaders in reporting greenhouse gas [GHG] inventories that follow the five guiding principles of GHG accounting, as laid out in the GHG Protocol Corporate Standard:

  • Relevance: Equips users to make decisions about emissions management.
  • Completeness: Includes all GHG emission sources and activities within the chosen inventory boundary following Hub frameworks.
  • Consistency: Uses consistent methodology for meaningful comparisons of emissions over time.
  • Transparency: Discloses all assumptions and references methodology and data sources used.
  • Accuracy: Ensures emissions quantification is as accurate as possible and reduces uncertainties.

Green Economy Leaders measure, report, and set targets on GHG emissions following localized Hub frameworks that meet Green Economy Canada’s Standards for GHG Frameworks

Emissions are calculated by multiplying activity data (e.g. kWh, L’s consumed, kms travelled) by the relevant emission factor. Total emissions and reductions are expressed in CO2e  (carbon dioxide equivalent) by multiplying greenhouse gas-specific emissions by their most up-to-date global warming potential. Data is produced voluntarily from direct utility consumption and other verifiable metrics. Emission factors are sourced primarily from the National Inventory Report and are updated annually. Global warming potentials are sourced from the IPCC Assessment Reports. 

Any inventories developed using exceptions to the above methodology are noted as such when publicly reported (e.g. when posted to Hub website, in Hub reports). Hubs review their methodology, quality assurance procedures, and emission factor sourcing on an annual basis, and document and communicate any changes in methodology to Green Economy Leaders and in public presentation of results.