Hefei Longquanshan Landfill Gas Power Generation Project

Audit Analysis

A CDM landfill gas power generation project in China with a VVB-confirmed combined additionality test, but undermined by a direct contradiction on whether gas capture was legally required, a 0% leakage deduction with inconsistent justification across documents, and 14 material findings at validation including calculation errors. The project-specific modeled baseline, absence of a buffer pool, and missing verified performance data limit confidence in the claimed reductions.

Project Description

Red Flags

• ⚠Contradiction between the PDD (capture legally required = true) and the validation report (capture legally required = false) directly undermines the additionality claim; the VVB's finding is privileged but the discrepancy signals a weak additionality case
• ⚠Leakage deduction of 0% with the PDD stating 'deemed negligible' while the monitoring report records the issue as 'not addressed' — no consistent, quantified leakage treatment across the project lifecycle
• ⚠14 material findings at validation, including errors in CH4 generation accounting, waste dumping rates, grid emission factors, and IRR calculation, indicating the original PDD contained significant technical inaccuracies
• ⚠No buffer pool percentage stated and no reversal events data available, leaving permanence risk unquantified for a project where gas generation continues after project closure
• ⚠Crediting period discrepancy: the validation report states 2009-10-01 to 2018-09-30 while the later monitoring report states 2010-03-11 to 2020-03-10, a shift of roughly 5 months at both ends

Credit Vintages