Datong River Tianwanggou Hydropower Station

Integrity

The monitoring report (2021) indicates additionality was confirmed by the VVB using an investment test, which supports additionality. Baseline setting is project-specific under ACM0002 (version 07), and the extracted record does not state when the baseline was last reassessed, which adds uncertainty. Leakage is applied as a 0% deduction, but the monitoring reports conflict on whether leakage was justified as negligible or not addressed, weakening confidence in the leakage assessment (monitoring reports, 2012 and 2021). Material findings and corrective actions in the monitoring report (2021) flag inconsistencies in equipment description and crediting-period presentation, which is a substantive integrity concern.

Transparency

For the 2015-12-30 to 2018-06-19 monitoring period, the monitoring report (2021) shows the verified ERs equal the claimed ERs (484,727 tCO2e), which is a positive MRV signal. The grid emission factor is reported as 0.8498, but the grid EF year is not stated in available documents, limiting reproducibility. The extracted record also does not provide a baseline reassessment date, and leakage justification is inconsistently stated across monitoring reports, reducing transparency on key assumptions.

Claim Safety

The project is explicitly not CORSIA-eligible (monitoring report, 2021), which lowers the risk of problematic aviation-related claims. However, claim safety is weakened by contradictions that can affect crediting boundaries and over-crediting risk: leakage justification differs between monitoring reports (2012 vs 2021), and the crediting period differs between the monitoring report and validation report. CCP status is not stated in available documents, leaving uncertainty about alignment with higher-integrity labels.

Documentation

The extracted record indicates 12 documents were used and includes core document types (PDD, monitoring report, validation report, issuance), with high extraction confidence. Nonetheless, the monitoring report (2021) lists multiple material findings and corrective actions, including unclear site identification (GPS coordinates) and inconsistent unit/device descriptions, indicating documentation quality issues that required remediation. The presence of unresolved or historically inconsistent statements across documents (e.g., safeguards and leakage narratives) also reduces confidence in documentation consistency over time.

Overall

Overall quality is moderate: ERs are consistently claimed and verified for the stated monitoring period, and additionality is VVB-confirmed (monitoring report, 2021). Key contradictions reduce reliability: (1) leakage justification is "not addressed" in the 2021 monitoring report but "deemed negligible" in the 2012 monitoring report—given the more recent document, the 2021 statement is privileged, but the inconsistency lowers confidence; (2) safeguards, grievance mechanism, benefit sharing, and FPIC are reported as present in 2021 but absent in 2012—again the 2021 monitoring report is privileged as more recent, but the shift suggests inconsistent disclosure; (3) the crediting period is 2008–2018 in the 2021 monitoring report versus 2010–2020 in the 2012 validation report—because the monitoring report also flags an internal crediting-period contradiction requiring correction, neither value is fully reliable, so scores are reduced for integrity and claim-safety due to boundary/eligibility uncertainty.