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CDMMethane avoidanceChinaAMS-I.C

Household biogas project in Xinhua County, Loudi City, Hunan Province

CDM-4723 ↗

#137of 268 in Biogas#760of 1084 in China#997of 1459 in CDM (UNFCCC)#41of 115 in AMS-I.C

4.8/ 10
Integrity
5.5
Transparency
4.0
Claim Safety
5.5
Documentation
3.2

Audit Analysis

A CDM household biogas project in Hunan Province with a solid combined additionality test verified by DNV, but limited by the absence of any monitoring reports, a thin 0% leakage justification, and a 10× discrepancy in the claimed ERR between the PDD and the validation report. The project is at validation stage only, with no post-implementation data available to confirm delivery.

Red Flags

  • The PDD states a total ERR of 523,990 tCO₂e while the validation report (later, VVB-verified) states 52,399 tCO₂e — a 10× discrepancy that, even if a typographical error, signals a data-quality weakness in the project documentation.
  • No buffer pool, reversal-risk analysis, or permanence safeguard is documented; for a 10-year crediting period (2011–2021) this leaves no explicit protection against credit reversal.
  • Leakage is set at 0% on the basis of a 'deemed negligible' justification with no quantified analysis, and a second (unidentified) source appears to describe the leakage treatment as 'quantified' — an unresolved contradiction.
  • No monitoring reports, monitoring period, or verified usage-rate data are present in the extracted record, so actual delivery cannot be assessed.

Credit Vintages

No issuances recorded on the registry.

Risk Indicators

Additionality

Combined test, VVB-confirmed

Permanence

mixed evidence / unresolved risk

Leakage

0% deduction, thin justification

Baseline

Project-specific, measured

Safeguards

Mentioned but not detailed

Double-claim

CORSIA/CCP status not stated

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Analysis ProvenanceScored2026-08-31AMS-I.C and AMS-III.R

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