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VCS avoidance China Vintage 2017 Registry: Registered Documentazione completa General Methodology v2.0

Jiangsu Dongtai Phase II Wind Power Project

VCS-1356 ↗

6.3 / 10
Integrity
6.2
Transparency
6.4
Claim Safety
6.0
Documentation
7.1

Score Breakdown

Integrity

verified Additionality is confirmed by the VVB in the monitoring/verification package (2022).

missing Corrective actions in the 2022 monitoring package flag inconsistencies in grid EF determination and project scale classification, which can affect baseline emissions and ER integrity.

Transparency

verified Core MRV parameters are disclosed (monitoring period 2018-11-01—2022-07-31; grid EF 0.8325; methodology ACM0002 v20.0) in the 2022 monitoring report.

missing Conflicting ER totals across validation reports (2019 vs 2022) reduce clarity on what was actually verified.

Claim Safety

verified The project is explicitly not CORSIA-eligible in the extracted record, lowering aviation-claim double-claiming risk.

missing Over-crediting risk is elevated by contradictions in verified ER totals and by corrective actions related to grid EF calculation and annual ER figures.

Documentation

verified A relatively large document set is available (19 documents including PDD, monitoring reports, validation report, and issuance) with high extraction confidence.

missing Multiple cross-document contradictions (safeguards, leakage treatment, crediting period, ER totals) indicate record-keeping and consistency weaknesses.

Detailed Analysis

Integrity

The project applies ACM0002 (version 20.0) with a project-specific baseline approach and a stated grid emission factor of 0.8325 (monitoring report, 2022). Additionality is described as an investment test and is confirmed by the VVB in the 2022 monitoring/verification package, supporting additionality robustness. However, the 2022 monitoring report lists corrective actions requiring revision of the grid EF determination approach and notes inconsistencies in annual ER figures and project scale classification, which can directly affect baseline emissions and credited ER volumes. Leakage is reported with a 0% deduction and described as quantified in the 2022 monitoring report, but earlier monitoring documentation (2019) indicates leakage was not addressed, reducing confidence in consistent application over time.

Transparency

The monitoring period (2018-11-01—2022-07-31), methodology, and key baseline parameter (grid EF) are disclosed in the 2022 monitoring report, and the VVB is identified as China Classification Society Certification Co., Ltd. The extracted record includes both claimed ER (2,366,077) and verified ER figures, but the verified total is inconsistent across validation reports (2019 vs 2022), which undermines transparency on the final verified quantity. Safeguards-related disclosures (FPIC, grievance mechanism, benefit sharing) appear in the 2022 monitoring report but are contradicted by an earlier monitoring report (2014), suggesting uneven disclosure quality across vintages.

Claim Safety

The project is marked as not CORSIA-eligible in the extracted record, which reduces the risk of aviation-related double claiming. Nonetheless, claim safety is weakened by MRV inconsistencies: the verified ER total differs materially between the 2019 and 2022 validation reports, and the 2022 monitoring report’s corrective actions highlight issues with grid EF determination and mismatches in stated annual ER versus the registered PDD. Leakage treatment is also inconsistent across monitoring reports (2019 vs 2022), increasing the risk that public claims could overstate conservativeness.

Documentation

Documentation coverage is relatively strong: the extracted record references the PDD, multiple monitoring reports, validation report(s), and issuance, with 19 documents used and high extraction confidence. However, the presence of multiple contradictions across documents (safeguards, leakage justification, additionality verification status, crediting period, and verified ER totals) indicates weaknesses in document consistency and version control. Corrective actions recorded in the 2022 monitoring report further suggest that key sections required revision to align with applicable grid EF references and VCS requirements.

Overall

Overall quality is moderate: the project has a recognized renewable methodology (ACM0002), a recent monitoring period, and VVB involvement, but reliability is reduced by repeated cross-document inconsistencies. For contradictions, the more recent documents were privileged where they are likely to reflect updated VVB conclusions (e.g., leakage described as quantified and safeguards/FPIC/grievance/benefit sharing reported in the 2022 monitoring report), but scores are reduced because earlier monitoring reports contradict these disclosures. For the verified ER total, the 2022 validation report figure (956,291) is privileged over the 2019 validation report (1,686,838) because it is more recent, yet the discrepancy itself is a significant transparency and claim-safety concern. For the crediting period, the monitoring report’s 2010–2030 period is treated as more plausible given the project’s long-running crediting history, but the 2022 validation report’s 2020 start-date conflict creates uncertainty about eligible issuance boundaries and therefore lowers integrity and transparency.

Audit Analysis

This is a VCS wind power project using ACM0002 with VVB-confirmed additionality and a recent monitoring package, but several internal inconsistencies across documents reduce confidence. Key MRV elements (grid EF basis and verified ER totals) show discrepancies and required corrections, increasing over-crediting and reliability risk despite generally good document availability.

Project Description

This carbon project involves installing 100 turbines with a total installed capacity of 200MW to sell into the East China Power Grid. By avoiding CO2 emissions from fossil fuel-fired power plants, it is expected to generate 406,020 MWh per year and reduce emissions by 338,010 tCO2e annually.

Red Flags

  • Verified emission reductions differ materially between two validation reports (2019 vs 2022), indicating potential MRV/issuance inconsistency.
  • Crediting period start date is inconsistent across documents (2010 vs 2020), creating uncertainty about eligible vintage and issuance boundaries.
  • Corrective actions cite inconsistencies in grid emission factor determination and project scale classification, which can directly affect credited volumes.

Credit Vintages

Issued Retired Available
2010
374 374 0
2011
80,938 80,938 0
2012
29,874 29,874 0
2014
193,438 193,438 0
2015
371,055 371,055 0
2016
383,648 383,648 0
2017
386,251 343,219 43,032
2018
352,446 352,446 0
Total 1,798,024 1,754,992 43,032

Cosa migliorerebbe questo punteggio

  • Publish a clear reconciliation note linking each issuance/verification vintage to a single verified ER total and explaining why the 2019 vs 2022 validation figures differ.
  • Resolve the crediting period start-date inconsistency across documents and update registry-facing documentation to reflect the definitive crediting period and eligible monitoring vintages.

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

Risk Indicators

Additionality

VVB-confirmed investment test (latest package)

Permanence

Avoidance project; no reversal risk indicated

Leakage

0% leakage but inconsistent treatment across reports

Baseline

Project-specific baseline; EF approach required correction

Safeguards

Safeguards reported recently but contradicted historically

Double-claim

Not CORSIA-eligible; CCP status not stated

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Analysis Provenance Scored 2026-04-02 General Methodology v2.0 Documentazione completa

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