Biodigesters program for a low-carbon livestock sector in Vietnam (BioLive)

Audit Analysis

The BioLive biodigester project in Vietnam has a solid additionality foundation (combined test confirmed by the VVB) and a conservative 10% leakage deduction, but is undermined by the absence of a stated buffer pool, unresolved material findings (including 1,421 digesters missing from the survey), and nine cross-document contradictions that erode confidence in the data. The project is mid-crediting-period with a recent monitoring cycle, yet the verified ERR figure is not available in the extracted record, limiting the ability to confirm delivery against the ex-ante estimate.

Project Description

Red Flags

• ⚠1,421 biodigesters were excluded from the current monitoring survey (FAR #1), with corrective action only to sample 65 of them in the next cycle — a material coverage gap in the MRV chain.
• ⚠Buffer pool percentage is not stated in any available document, leaving permanence risk for a biogas project unquantified.
• ⚠Nine contradictions across documents, including a 10% vs 0% leakage deduction discrepancy and a 79,268 vs 64,820 tCO₂e ERR discrepancy, raise data-reliability concerns.
• ⚠The verification report marks reversal events as 'not addressed' while the more recent monitoring report states 'none reported' — the verification-level assessment is incomplete.
• ⚠FPIC status is contradictory: the verification report (Mar 2025) confirms it was conducted, but the monitoring report (Dec 2023) records it as not conducted.

Credit Vintages