VCS avoidance China Registry: Late to verify Documentazione completa General Methodology v2.0

Shiyazi Hydro Power Project In Guizhou Province China

VCS-936 ↗

6.3 / 10

Integrity

6.1

Transparency

6.4

Claim Safety

6.0

Documentation

6.8

Score Breakdown

Integrity

verified The validation/verification record indicates additionality was confirmed by the VVB using an investment test.

missing Leakage treatment is weak and inconsistent across documents, with no quantified deduction reported.

Transparency

verified A specific monitoring period is provided and verified ERs are reported (116,782 tCO2e) in the monitoring report (2012).

missing Key baseline governance details (e.g., when the baseline was last reassessed) are not stated in the extracted record, and leakage reporting is incomplete.

Claim Safety

verified The project is explicitly not CORSIA-eligible, reducing certain double-claiming/eligibility-related risks.

missing Contradictions on crediting period and leakage handling increase over-crediting and greenwashing risk.

Documentation

verified Multiple core document types are present (PDD, validation report, monitoring report) with high extraction confidence and no corrective actions listed.

missing Internal inconsistencies across documents (leakage, safeguards, crediting period) reduce confidence in the record’s coherence.

Detailed Analysis

Integrity

Additionality appears reasonably supported because the VVB (TÜV Rheinland (China) Ltd.) confirmed additionality using an investment test, as reflected in the validation/verification record. Baseline setting is project-specific under ACM0002, but the timing of any baseline reassessment is not stated in the extracted record, which weakens robustness. Leakage is a key weakness: the monitoring report (2012) does not address leakage and no leakage deduction is reported, undermining completeness for an avoidance crediting claim.

Transparency

The monitoring report (2012-11-12) clearly states the monitored period (2011-04-28 to 2011-09-04) and reports verified emission reductions of 116,782 tCO2e, which supports MRV traceability. However, the extracted record lacks the claimed ER figure and does not provide supporting detail on leakage accounting, limiting third-party reproducibility. Registry and VVB identity are clear (VCS; TÜV Rheinland (China) Ltd.), but some key parameters (e.g., grid EF vintage year) are not stated in the extracted record.

Claim Safety

The project is explicitly not CORSIA-eligible, which reduces the risk of certain compliance-market double-claiming narratives. Nonetheless, over-crediting risk is elevated by inconsistent documentation on the crediting period and by incomplete leakage treatment (monitoring report does not address leakage; no deduction reported). CCP status is not stated in the extracted record, leaving uncertainty for high-integrity claims that rely on CCP-alignment.

Documentation

Core documents are present (PDD, validation report, monitoring report) and the extraction confidence is high, which supports usability of the record. The monitoring report indicates no material findings and no corrective actions required, which is a positive signal for audit outcomes. However, contradictions between documents on safeguards, leakage justification, and the crediting period reduce documentation coherence and should be resolved for stronger confidence.

Overall

Overall quality is moderate: additionality is VVB-confirmed and the monitoring period and verified ERs are clearly stated in the monitoring report (2012). However, three contradictions materially affect confidence: (1) leakage justification is treated as not addressed in the monitoring report versus deemed negligible in the PDD—priority is given to the monitoring report because it should reflect what was actually monitored and reported for issuance; (2) safeguards are absent per the validation report but present per the PDD—priority is given to the validation report as the independent assessment, indicating weaker safeguards disclosure; (3) the crediting period differs between the monitoring report (2011-04-28 to 2011-09-04) and the PDD (2011-11-01 to 2018-10-31)—priority is given to the monitoring report for the issuance-relevant period, but the inconsistency lowers reliability and increases over-crediting/communication risk.

Audit Analysis

This VCS hydropower project uses an established grid-connected renewable methodology and has additionality confirmed by the VVB, with no material findings or corrective actions reported. However, key integrity elements are weakened by missing or inconsistent treatment of leakage and by contradictions across documents on safeguards and the crediting period.

Project Description

The Shiyazi 140MW Hydro Power Project is a hydropower station located in Guizhou Province, China. With a total installed capacity of 140MW, the project generates an average of 478,200 MWh annually, meeting the electricity demand of industrial and agricultural production and the people's lives in Zunyi City. The electricity generated is also delivered to China Southern Power Grid to help with peak adjustments.

Red Flags

Leakage is inconsistently handled: the monitoring report does not address leakage, while the PDD deems it negligible, and no leakage deduction is reported.
Crediting period is contradictory between the monitoring report (a short 2011 period) and the PDD (2011–2018), raising reliability/over-crediting concerns.
Safeguards disclosure is inconsistent between the PDD and the validation report, and FPIC/grievance mechanism are not evidenced in the extracted record.

Credit Vintages

		Issued	Retired	Available
2011		116,782	46,040	70,742
Total		116,782	46,040	70,742

Cosa migliorerebbe questo punteggio

Provide a clear, consistent leakage assessment for the monitored period (including whether leakage is negligible and the basis), and disclose any applied leakage deduction.
Resolve and publicly clarify the crediting period discrepancy between the PDD and monitoring report, and align registry documentation to the issuance period(s).
Publish/attach safeguards evidence (e.g., stakeholder consultation records, FPIC where relevant, and a grievance mechanism) and ensure consistency between the PDD and validation report.

Questi suggerimenti indicano quali prove pubbliche aggiuntive potrebbero migliorare il livello di confidenza di questa valutazione. Non garantiscono un punteggio futuro più alto.