Jiyuan Weiheng Cow Breeding Farm Biogas Recovery and Utilization Project

Audit Analysis

A VCS-registered biogas project in China using the standardised AMS-III.D methodology, with a VVB-confirmed barrier additionality test and reasonable safeguards (FPIC, grievance mechanism). However, the project suffers from a significant transparency gap: no monitoring data, no verified ERR, and no buffer pool allocation are available in the extracted record. Two contradictions between the PDD and validation report (crediting period and leakage treatment) introduce data-reliability concerns that temper confidence in the claimed 262,451 tCO₂e lifetime figure.

Project Description

Red Flags

• ⚠Crediting period contradiction: the PDD (Oct 2022) states a 21-year period (Dec 2022 – Nov 2043) while the validation report (Mar 2023) records a 7-year period (Jun 2023 – Jun 2030); the validation report is privileged as the more recent and authoritative document, but the discrepancy is unexplained.
• ⚠No monitoring or verification data available: total verified ERR, monitoring period, and usage monitoring method are all absent from the extracted record, making it impossible to validate the 262,451 tCO₂e lifetime claim.
• ⚠Leakage justification inconsistent: the PDD (Oct 2022) does not address leakage, while the validation report (Mar 2023) records a 0% deduction deemed negligible; the validation report is privileged, but the gap in the PDD is a documentation weakness.
• ⚠Low extraction confidence on at least one key document, reducing reliability of the structured data.

Credit Vintages

No issuances recorded on the registry.