Yongkang huachuan MSW landfill site LFG comprehensive utilization project

Audit Analysis

A VCS-registered landfill gas-to-electricity project in China with VVB-confirmed additionality and a renewable energy profile that eliminates reversal risk, but undermined by a 218% over-delivery relative to the pro-rata ex-ante expectation, a grid emission factor discrepancy between the verification and monitoring reports, a baseline characterization contradiction (measured vs. modeled), and 12 material findings requiring corrective action. The low extraction confidence and project-specific baseline further limit confidence in the credit quantity.

Project Description

Red Flags

• ⚠Verified ERR of 84,996 tCO2e for a ~9.7-month monitoring period is approximately 218% of the pro-rata expectation (~38,900 tCO2e) derived from the 483,633 tCO2e lifetime ex-ante estimate, raising over-crediting concerns
• ⚠Grid emission factor discrepancy: the verification report uses 0.7921 tCO2/MWh while the monitoring report uses 0.58955 tCO2/MWh, a 34% difference that directly affects the electricity-generation credit component
• ⚠Baseline characterization contradiction: the verification report describes the baseline as 'measured' while the monitoring report describes it as 'modeled', creating uncertainty about baseline robustness
• ⚠LFG capture is legally required in the project area, which weakens the additionality claim despite VVB confirmation of the combined test
• ⚠12 material findings and 12 corrective actions were raised by the VVB, including incomplete monitoring parameters, missing flow-meter calibration data, and an SSC threshold breach for 2028 ex-ante emissions

Credit Vintages