National Biodigester Programme Phase IV

Audit Analysis

The National Biodigester Programme Phase IV in Cambodia has a VVB-confirmed additionality assessment and a quantified 5% leakage deduction, but is significantly undermined by 24 corrective actions flagged in the verification report, eight inter-document contradictions (including a 100× discrepancy in the FNRB value and a 4.4× gap between the monitoring report's claimed ERR and the verified figure), and the absence of a buffer pool or permanence mechanism. The project's verified credits (61,000 tCO₂e) are within a reasonable range of the pro-rata ex-ante expectation, but the volume of unresolved methodological and reporting deficiencies raises material concerns about the robustness of the underlying MRV.

Project Description

Red Flags

• ⚠The monitoring report claims 270,441.6 tCO₂e while the verification report confirms only 61,000 tCO₂e — a 4.4× over-claim that was not verified by the VVB.
• ⚠The FNRB value is reported as 20% (national default, verification report) versus 0.2% (local field, monitoring report) — a 100× discrepancy that materially affects credit volume.
• ⚠24 corrective actions were required by the verification report, spanning missing methodology parameters, incorrect SDG calculations, undefined project boundaries, and absent monitoring methods.
• ⚠The ex-ante lifetime ERR in the PDD (108,586 tCO₂e) is 74% higher than the figure confirmed in the verification report (62,296 tCO₂e), indicating a significant downward revision.

Credit Vintages