When will the new GHG Protocol corporate standard be published?

Not before late 2028. GHG Protocol says the joint GHG Protocol-ISO Corporate Standard is slated for publication in Q4 2028, after a consolidated public consultation on Scope 1, 2, 3 and actions and market instruments slated for Q2 2027. Until then, today's standards apply.

The published timeline

• Q2 2027: one consolidated public consultation covering Scope 1, Scope 2, Scope 3 and actions and market instruments.
• Q4 2028: the joint GHG Protocol-ISO Corporate Standard, slated for publication.
• After that: an effective date, so there will be a gap between publication and the first year you must apply it.

One date does not match

The Scope 2 status page puts actions and market instruments in the Q2 2027 consolidated consultation. The separate Actions and Market Instruments page says a formal consultation on that draft standard is planned for Q3 2027. Watch both pages.

What applies until then

• GHG Protocol Corporate Standard for Scope 1 and the inventory.
• Scope 2 Guidance (2015) for location-based and market-based Scope 2.
• Corporate Value Chain (Scope 3) Standard.
• Programmes built on these, such as SBTi, CDP and BRSR, keep their own rules and dates.

How to plan

1. Report 2026-27 and 2027-28 under the current standards, and name them in the report.
2. Read the Q2 2027 consultation, especially the Scope 2 market-based methods.
3. Keep interval meter data and certificate details now; they are hard to rebuild later.
4. Expect buyers to move only after a final standard and its effective date are out.

What Senseible does here

Senseible prepares GHG Protocol reports from your bills and invoices under the current standards, with the factor and source on each line, so the same records can be read again when new rules take effect. It does not set or validate targets.

• Get your carbon number
• What the GHG Protocol revision changes
• ISO 14064 vs GHG Protocol
• GHG Protocol Scope 2: two methods

Sources: GHG Protocol, Scope 2 market-based method update: from 2025-2026 public consultation to current status (16 October 2026), GHG Protocol, Actions and Market Instruments Standard page, GHG Protocol standards

Last reviewed 2026-11-01. Timeline dates are marked as slated or planned; re-check both GHG Protocol pages each quarter.