Validation and Verification Body (VVB) is a juristic person who is responsible for validation and verification of Premium T-VER project. 

According to the Regulation of the Board of Directors of Thailand Greenhouse Gas Management Organization re: rules for consideration of registration of Validation and Verification Body for voluntary projects, B.E. 2564 (2021) which entered into force since 4^th February 2021, an entity which can be designated as a Validation and Verification Body (VVB) shall be either:

• Designated Operational Entities (DoEs) accredited by the Executive Board under the Clean Development Mechanism;
• Entities accredited under ISO 14065 by an accreditation Body that is a member of the International Accreditation Forum (IAF); or
• Entities accredited by the National Standardization Council (NSC).