Standards-setting bodies the International Organization for Standardization (ISO) and the Greenhouse Gas Protocol (GHG Protocol) have announced plans on July 29 to consolidate their corporate-level carbon-accounting frameworks into one unified global standard.

The announcement builds on a strategic partnership struck between the two organizations in 2025, which was designed to unify global methodologies for companies for greenhouse gas measurement and reporting.

At the time, the pair flagged fragmented standards and policies as barriers to climate action. The joint initiative aims to deliver a common global accounting language, streamline corporate reporting workflows, boost consistency for policymakers and ease measurement and disclosure burdens for market participants.

According to GHG Protocol's latest update, the consolidated standard will improve practical usability for businesses and other end-users. A single coordinated public consultation exercise will enable more meaningful stakeholder input, while the unified framework is expected to help unlock greater investment and accelerate global decarbonization efforts.

Following outreach to key partners and stakeholders, ISO and GHG Protocol intend to publish one single co-branded corporate standard. An integrated public consultation for the upcoming corporate standard is scheduled for the second quarter of 2027.

The new standard will consolidate GHG Protocol's Scope?1, Scope?2, Scope?3 and Actions and Market Instruments (AMI) deliverables alongside ISO?14064-1, the international standard for organizational-level greenhouse gas accounting.