Dongyuan Xiantang Landfill Gas Power Generation Phase I Project
Score Breakdown
Integrity
verified Additionality is confirmed by the VVB using a combined test (validation/verification documentation referenced in the extracted record).
missing Leakage treatment is not addressed and no leakage deduction is evidenced in the extracted record (monitoring documentation).
Transparency
verified A specific monitoring period is disclosed (2022-01-25 to 2023-02-28) and verified ERs are reported as 65,256 tCO2e (monitoring report dated 2023-11-02).
missing Claimed ERs are not found in the extracted record, limiting cross-checking between claimed vs verified outcomes.
Claim Safety
verified Verified ERs are explicitly reported for the monitoring period (monitoring report dated 2023-11-02).
missing CORSIA eligibility and CCP status are not stated in the extracted record, leaving uncertainty for downstream claims and labeling.
Documentation
verified Multiple core documents are evidenced (monitoring report, validation report, PDD, issuance) with high extraction confidence and 9 documents used.
missing Some key quantitative fields are missing from the extracted record (e.g., claimed ERs, leakage deduction, buffer pool/reversal details), reducing completeness.
Detailed Analysis
Integrity
The extracted record indicates additionality was confirmed by the VVB and assessed using a combined test, which supports additionality robustness (validation/verification documentation referenced). The monitoring report (2023-11-02) reports no material findings and no corrective actions required, which supports MRV and implementation quality. However, leakage is explicitly marked as not addressed in the extracted record and no leakage deduction is evidenced, which weakens integrity for a methane/landfill gas activity. The baseline is described as project-specific and the timing of any baseline reassessment is not stated in the extracted record, adding uncertainty around baseline validity over time.
Transparency
The monitoring report (2023-11-02) clearly states the monitoring period (2022-01-25 to 2023-02-28) and provides verified emission reductions of 65,256 tCO2e. The VVB is identified as APPLUS+ LGAI TECHNOLOGICAL CENTER S.A., supporting audit traceability. However, the claimed ER total is not found in the extracted record, limiting the ability to reconcile claimed versus verified values. Several methodological inputs are not fully evidenced in the extracted record (e.g., grid emission factor value), which reduces transparency of recalculation by third parties.
Claim Safety
Over-crediting risk is moderated by the presence of VVB-confirmed additionality and a stated verified ER quantity for the monitoring period (monitoring report dated 2023-11-02). At the same time, leakage is not addressed in the extracted record, which can increase the risk that credited reductions are overstated if leakage pathways exist or are material. CORSIA eligibility and CCP status are not stated in the extracted record, so buyers cannot rely on those labels without further registry confirmation. The baseline approach is project-specific with no reassessment timing found in the extracted record, which can elevate uncertainty for long crediting periods.
Documentation
Documentation coverage is relatively strong: the extracted record lists a monitoring report, validation report, PDD, and issuance, with 9 documents used and high extraction confidence. The monitoring report is recent (dated 2023-11-02) and aligns with a current crediting period starting 2022-01-25. Nonetheless, several important fields are not found in the extracted record (e.g., claimed ERs, leakage deduction percentage, buffer pool percentage, reversal events detail), which suggests incomplete extraction or incomplete disclosure in the available set. Overall, the document set supports a reasonable assessment but leaves notable gaps for independent replication.
Overall
No contradictions are reported in the extracted record, so scores are not adjusted for internal document discrepancies. The project benefits from VVB-confirmed additionality, a clearly stated monitoring period, and a reported verified ER total, supporting moderate overall quality. The main downward drivers are the absence of leakage treatment in the extracted record and missing key quantitative fields (including claimed ERs and some baseline-related details), which increase uncertainty and greenwashing/over-crediting risk. Note: if integrity were to fall below 4.0, an overall cap would apply under the gate rules, but the current integrity score remains above that threshold.
Audit Analysis
This VCS landfill gas-to-power project shows moderate integrity: additionality is confirmed by the VVB and no material findings or corrective actions are reported for the monitored period. However, leakage treatment is not addressed in the extracted record and key baseline parameters (including reassessment timing and some emissions factor details) are not clearly evidenced, increasing over-crediting uncertainty.
Project Description
The Dongyuan Xiantang Landfill Gas Power Generation Phase I Project is a landfill gas recovery and power generation project located at the Dongyuan Xiantang Municipal Solid Waste (MSW) landfill site in Heyuan City, Guangdong Province, China. The project captures landfill gas, which is primarily composed of methane, a potent greenhouse gas, and uses it to generate electricity. This electricity is then supplied to the China Southern Power Grid, replacing electricity that would have otherwise been generated from fossil fuel-fired power plants. The project provides several environmental benefits. Primarily, it reduces greenhouse gas emissions by preventing the release of methane into the atmosphere and by displacing electricity generated from fossil fuels. It also helps mitigate the risk of landfill explosions, reduces landfill odor, and contributes to the overall improvement of local air quality. In addition to its environmental benefits, the project also provides social and community benefits. It has created both temporary and permanent jobs, contributing to the local economy. The project also improves landfill safety and reduces odor, enhancing the quality of life for nearby residents.
Red Flags
- Leakage is not addressed in the extracted record (no justification and no stated deduction), despite landfill gas projects potentially having leakage-related considerations.
- Baseline is described as project-specific and the timing of any baseline reassessment is not stated in the extracted record, which can increase baseline/over-crediting risk.
Credit Vintages
| Issued | Retired | Available | ||
|---|---|---|---|---|
| 2022 | 50,000 | 6,362 | 43,638 | |
| Total | 50,000 | 6,362 | 43,638 |
Cosa migliorerebbe questo punteggio
- Disclose and justify leakage treatment explicitly (including any quantified leakage deduction or a defensible negligible-leakage demonstration) in the monitoring/verification documentation.
- Provide a clear baseline parameter set and update/reassessment evidence (including the applied grid emission factor value and any baseline reassessment timing) to enable third-party recalculation and reduce over-crediting risk.
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
VVB-confirmed combined additionality test
Avoidance project; no reversals reported
Leakage not addressed in extracted record
Project-specific baseline; reassessment timing unclear
FPIC and grievance mechanism documented
CORSIA/CCP status not stated in extracted record
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