Wenchang Rural Methane Digesters Project in Hainan Province
GS-462 ↗ · current registry ID: GS2665
#53of 268 in Biogas#468of 1084 in China#548of 1801 in Gold Standard (GS)#21of 115 in AMS-I.C
Audit Analysis
The Wenchang Rural Methane Digesters Project is a Gold Standard biogas project with VVB-confirmed additionality and a quantified (0%) leakage deduction, but it carries notable gaps in permanence safeguards (no buffer pool or reversal data), an unassessed project-specific baseline, and a heavy load of 20 corrective actions from the verification body. The project delivered 92.6% of its per-period PDD estimate, indicating no over-crediting, but the absence of FNRB, CORSIA, and CCP data limits confidence in the full claim picture.
Red Flags
- 20 corrective actions were required by the VVB (CTI) in the 2021 verification report, spanning calculation errors, missing technical descriptions, and incomplete stakeholder engagement documentation
- No buffer pool percentage or reversal event data is stated in any available document, leaving permanence risk unquantified for a biogas project
- FPIC was not conducted, and the verification report required clarification on grievance mechanism expression and stakeholder feedback rounds
- Crediting period differs between the PDD (2012–2022) and the 2021 verification report (2013–2023), creating ambiguity about the valid crediting window
Credit Vintages
| Issued | Retired | Available | ||
|---|---|---|---|---|
| 2013 | 33,562 | 33,562 | 0 | |
| 2014 | 56,301 | 56,301 | 0 | |
| 2015 | 56,361 | 56,111 | 250 | |
| 2016 | 56,522 | 55,387 | 1,135 | |
| 2017 | 56,129 | 12,840 | 43,289 | |
| 2018 | 55,758 | 5,672 | 50,086 | |
| 2019 | 45,441 | 45,026 | 415 | |
| Total | 360,074 | 264,899 | 95,175 |
Risk Indicators
VVB-confirmed combined test
mixed evidence / unresolved risk
0% deduction, quantified justification
Project-specific, modeled, no reassessment date
Grievance mechanism present, FPIC not conducted
CORSIA and CCP status not stated
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