Chongqing Tongliang LFG Power Generation Project

Audit Analysis

A VCS landfill-gas power-generation project in China with a VVB-confirmed combined additionality test and no material findings, but weakened by a 0% leakage deduction that the verification report describes as 'not addressed,' a project-specific baseline with no recorded reassessment, and a verified emission-reduction figure that is roughly four times the pro-rata expectation derived from the PDD's lifetime estimate. Multiple contradictions between the 2023 and 2025 verification reports on safeguards, FPIC, and grievance mechanisms suggest the project's social-compliance documentation was substantially strengthened only recently.

Project Description

Red Flags

• ⚠Leakage deduction is 0% and the 2025 verification report records the justification as 'not addressed,' while the monitoring report calls it 'deemed negligible' — the higher-authority verification report does not support the zero deduction.
• ⚠The verified emission reduction of 105,752 tCO₂e for the two-year monitoring period (Aug 2022 – Jul 2024) is approximately 4.2× the pro-rata expectation of ~24,989 tCO₂e derived from the PDD's 10-year lifetime estimate of 124,945 tCO₂e, raising over-crediting questions even accounting for front-loaded LFG generation.
• ⚠Eight contradictions were identified across documents, including FPIC, grievance mechanism, benefit-sharing, and safeguards all flipping from 'not present' in the 2023 verification report to 'present' in the 2025 report, indicating the project's social-compliance record was retroactively strengthened.
• ⚠Buffer-pool percentage, reversal-event history, FNRB method, and usage-monitoring method are all absent from the extracted record, leaving key MRV and permanence parameters unverified.

Credit Vintages