NANSHA HYDRO POWER PROJECT IN YUNNAN PROVINCE CHINA

Integrity

Additionality appears reasonably supported because the validation/verification record confirms an investment test and VVB confirmation. However, baseline setting is project-specific under ACM0002 and there is no clear evidence in the extracted record of when the baseline was last reassessed. Leakage is a key weakness: the monitoring report (2022) does not address leakage and no leakage deduction is evidenced, and the monitoring report lists corrective actions on missing monitoring parameters and meter calibration records, which undermines confidence in quantified ERs.

Transparency

The monitoring period (2012-09-01 to 2017-12-27), methodology (ACM0002 v06), grid emission factor (0.84335; year 2007), and VVB (Applus+) are clearly identified in the extracted record. No material findings are reported, but the monitoring report (2022) still requests clarifications and missing evidence, which reduces MRV transparency. A major transparency issue is the contradictory ER total reported across validation documents, which makes it difficult for third parties to reconcile what was actually verified/issued.

Claim Safety

The project is marked as not CORSIA-eligible, which lowers the risk of aviation-related double-claim pathways, though CCP status is not stated in the extracted record. Claim safety is weakened by the inconsistency in verified ER totals between validation reports and by unclear leakage treatment (quantified vs not addressed), both of which increase perceived over-crediting/greenwashing risk. The crediting-period inconsistency also creates ambiguity about which vintages and volumes are legitimately claimable under VCS.

Documentation

The extracted record references multiple core documents (PDD, monitoring report, validation report, issuance) and indicates high extraction confidence with 13 documents used, supporting a mid-to-strong documentation score. Nevertheless, the monitoring report (2022) lists corrective actions requiring missing parameter reporting, substantiation of implementation dates, and clarification/calibration records for backup meters. These items indicate that some underlying evidence was incomplete or not presented clearly at the time of assessment.

Overall

Overall quality is moderate: additionality is VVB-confirmed, but contradictions and MRV gaps materially reduce confidence. For leakage, the validation report (2022-09-02) indicates leakage was quantified while the monitoring report (2022-09-01) does not address it; the more methodology-focused validation report is privileged for intent, but the monitoring report is privileged for what was actually applied during monitoring, so scores are reduced due to inconsistency and lack of a clear deduction. For safeguards/FPIC/grievance/benefit-sharing, the more recent monitoring report (2022) is privileged over the older monitoring report (2012) because it is later and likely reflects updated VCS requirements, but the contradiction still lowers confidence. For verified ERs (2,745,232 vs 478,420), neither value can be safely assumed without reconciliation; the higher figure is treated as higher over-crediting risk and the contradiction drives a downward adjustment. For the crediting period, the monitoring report’s longer period (2007-2028) conflicts with the earlier validation report (2009-2016); the monitoring report is privileged as the more recent operational record, but the inconsistency reduces reliability and claim clarity.