Gansu Ganzhou Biogas Recovery and Utilization Project
#171of 268 in Biogas#871of 1084 in China#996of 1339 in Verra (VCS)#61of 105 in AMS-III.D
Audit Analysis
The Gansu Ganzhou biogas project has a VVB-confirmed additionality assessment and a reasonable non-permanence treatment for a consumption-based biogas system, but it is undermined by eight material findings, a significant under-delivery of roughly 25% of the pro-rata expectation for the monitoring period, and a missing China ETS double-counting analysis. Multiple contradictions between the PDD and the verification report on baseline type, leakage justification, and additionality test type further erode confidence in the data record.
Red Flags
- Verified ERR of 10,156 tCO₂e is only ~24.5% of the pro-rata expectation (~41,520 tCO₂e) for the 15-month monitoring period, indicating severe under-delivery even accounting for the reported 3-month shutdown
- China ETS double-counting analysis is missing from the initial PDD and was flagged as a material finding; no declaration or justification has been provided
- Eight material findings and seven corrective actions were raised in the verification report, including a manure-source discrepancy (sheep vs. swine) and missing monitoring QA/QC details
- Contradictions between the PDD and verification report on baseline type (measured vs. modeled), leakage justification (deemed negligible vs. quantified), and additionality test type (barrier vs. combined) reduce data reliability
Credit Vintages
No issuances recorded on the registry.
Risk Indicators
VVB-confirmed combined test
N/A treatment reasonable for biogas
0% deduction, quantified justification; PDD says 'deemed negligible'
Project-specific, modelled; no reassessment date stated
Grievance mechanism present; FPIC not stated
CORSIA/CCP not stated; China ETS analysis missing
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