What a VVB does
A VVB is an independent, impartial auditor, accredited and empanelled with CR-I. It validates project designs, verifies results before MCUs are issued, and assesses new methodologies.
Activities
- Validation of new projects, permanent design changes and renewals of crediting periods
- Verification of monitoring reports before MCUs are issued, and of GHG reversals
- Assessment of new methodologies and tools, and of their revisions
Auditing principles
VVBs work to seven principles: integrity, independence, an evidence-based approach, confidentiality, fair representation, due professional care, and openness.
Obligations
- Hold accreditation in the sectoral scopes of the projects and methodologies they handle, and keep it.
- Use competent teams, in line with ISO 14066.
- Use the current CR-I report templates.
- Keep records for at least 10 years. For example, records of MCU issuance are kept for 10 years from the date of issue.
Becoming a VVB
See Eligibility and empanelment, or create a Registry account. Empanelled VVBs are listed on the VVBs page.
Sources
- Validation and Verification Standard v1.1, sections 4, 7, 8.5, 14.1 and 18.1
- Programme Guide v1.0, sections 6.3 and 13

