Haikou Rural Methane Digesters Project in Hainan Province

Audit Analysis

The Haikou Rural Methane Digesters Project has a VVB-confirmed additionality assessment and a quantified (albeit zero) leakage deduction, but is undermined by an extensive list of material findings and corrective actions spanning multiple verification cycles, a project-specific modeled baseline with no documented reassessment, and the absence of any buffer pool or permanence mechanism. The project delivered roughly 62% of its pro-rata ex-ante expectation for the elapsed monitoring period, a conservative outcome partly attributable to a documented swine-fever shock, but the volume of unresolved documentation and methodology issues raises meaningful concerns about the robustness of the underlying MRV.

Project Description

Red Flags

• ⚠Over 20 material findings and 15 corrective actions were raised across verification cycles, including invalid data sources for emission factors, missing units in baseline calculations, and emission calculation methods inconsistent with the PDD
• ⚠No buffer pool, permanence mechanism, or reversal-event tracking is documented, leaving the project exposed to potential credit reversal without a mitigation instrument
• ⚠The project delivered only ~62% of the pro-rata ex-ante expectation for the 2020–2023 monitoring period, with the 2019 annual ER 47.1% below the PDD estimate due to swine fever, indicating sensitivity to external shocks
• ⚠Multiple contradictions exist across documents on ERR figures (110,399 vs 133,046), crediting period start date (2013 vs 2012), and leakage treatment (quantified vs not addressed), reducing confidence in data consistency
• ⚠No Free, Prior and Informed Consent (FPIC), life-cycle assessment, or carbon-content testing is documented despite the project's rural household context

Credit Vintages