Biogas Program for the Animal Husbandry Sector of Vietnam

Audit Analysis

A Gold Standard biogas project in Vietnam with solid additionality (combined test, VVB-verified) and a measured project-specific baseline, but undermined by six corrective actions, a 0% leakage deduction with contradictory justification, no stated buffer pool, and multiple data inconsistencies across documents. The project delivered 73% of its ex-ante expectation for the monitoring period, which is conservative, but CORSIA eligibility and unresolved FNRB method contradictions create residual over-crediting and dual-channel risk.

Project Description

Red Flags

• ⚠Six corrective actions (CARs) were required in the verification report, indicating material compliance gaps at the time of verification
• ⚠Leakage deduction of 0% with contradictory justification ('quantified' vs 'deemed negligible' in the same verification report) raises questions about whether displacement leakage was properly assessed
• ⚠CORSIA eligibility is confirmed while CCP status is not mentioned, creating potential dual-channel crediting risk
• ⚠Usage rate contradiction within the same verification report (69.59% vs 60.31%) undermines confidence in the verified emission reduction figure

Credit Vintages