Muyuan WJZ AWMS GHG Mitigation Project in Henan Province
#526of 1084 in China#609of 1339 in Verra (VCS)#25of 66 in ACM0010
Audit Analysis
The Muyuan WJZ anaerobic digestion project in Henan Province has VVB-confirmed additionality and a registered status, but suffers from a project-specific modeled baseline, unaddressed reversal risk, and a notable 38% over-delivery relative to the PDD ex-ante estimate. Several key parameters (FNRB, buffer pool, leakage percentage, CORSIA/CCP status) are absent from the extracted record, limiting confidence in the credit's robustness.
Red Flags
- Reversal events are explicitly 'not addressed' in the verification report — a significant gap for a biogas project where digester downtime or feedstock changes could reverse emissions
- Verified ERR of 444,807 tCO2e exceeds the PDD ex-ante estimate of 321,663 tCO2e by ~38%, raising over-crediting questions
- Leakage is described as 'quantified' but no specific deduction percentage is stated in any available document
- CORSIA eligibility and CCP status are both unstated, leaving double-claiming risk unassessed
Credit Vintages
No issuances recorded on the registry.
Risk Indicators
VVB-confirmed combined test
mixed evidence / unresolved risk
Quantified but no % stated
Project-specific, modeled, reassessment not yet due
FPIC and grievance mechanism documented
CORSIA and CCP status both unstated
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