The Greenhouse Gas Protocol (GHG Protocol) is the world’s most widely used accounting standard for measuring and managing greenhouse gas emissions. Originally developed in 1998 by the World Resources Institute and the World Business Council for Sustainable Development, it establishes the definitions, boundaries, and methodologies for calculating Scope 1, 2, and 3 emissions used in virtually every major corporate climate framework globally.
For Australian businesses, the GHG Protocol matters because it is the foundational methodology underpinning AASB S2, NGER, the Science Based Targets initiative, CDP, GRI, and TCFD. Any emissions inventory that doesn’t follow GHG Protocol methodology will not be accepted by auditors, investors, or regulators as credible.
In Australia, GHG Protocol methodologies are supplemented by the National Greenhouse Accounts (NGA) emission factors published annually by the Department of Climate Change, Energy, the Environment and Water – providing country-specific, state-specific, and fuel-specific factors required for Australian reporting.
We apply GHG Protocol and NGA-compliant methodologies in all greenhouse gas assessments and NGER/ASRS reporting we deliver for clients.

