loader image

Methodology assessment by VVBs

Every new methodology or tool is assessed independently by two different VVBs. The second VVB also reviews the first VVB’s report. VVBs need extra experience to assess methodologies.

MethodologiesLast reviewed 23 October 2026

Two independent assessments

  • The IMD appoints the first VVB. NCCF appoints the second; the IMD contracts and pays it.
  • Both follow the same scope, rules and procedures.
  • The second VVB reviews the first VVB’s Assessment Report and states its conclusion on it.
  • Revisions need one VVB assessment.

What VVBs check

That the methodology or tool conforms to the Carbon Standard, the Methodology Approval Procedure and other rules; that it uses the current template; that it is clear, concise and logically structured so that IPPs and VVBs can use it; and that each element complies.

Eligibility to assess methodologies

In addition to empanelment:

TypeRequirement
Non-AFOLUAccredited in all applicable scopes, and together at least 15 successful validations or methodology evaluations under other GHG programmes (CDM, VCS, Gold Standard and others)
AFOLUAt least 5 successful validations or verifications, or 1 methodology evaluation plus 2 validations or verifications

Output

An Assessment Report on the CR-I template, ending with an Assessment Statement.

Sources

The 17 UN Sustainable Development Goals, with SDG 13 Climate Action highlighted. Every CR-I project contributes to at least four SDGs, including SDG 13.