Alto-Tietê landfill gas capture project

Audit Analysis

The Alto-Tietê landfill gas flaring project has a solid additionality foundation (VVB-confirmed investment test) and inherently low permanence risk as an avoidance project, but is undermined by ten material findings in the validation report—including calculation errors, missing monitoring parameters, and incorrect fugitive emissions treatment. The project is under-delivering relative to its ex-ante estimate (approximately 34% of pro-rata expectation in the first monitoring period), which is conservative for claim safety but signals potential over-estimation in the baseline. Three contradictions across documents, particularly a 77% discrepancy in the grid emission factor, reduce confidence in the baseline's accuracy.

Project Description

Red Flags

• ⚠Ten material findings in the validation report, including errors in ex-ante baseline calculations, incorrect fugitive emissions treatment, and missing monitoring parameters for PEflare,y and energy demand
• ⚠Grid emission factor discrepancy of 77% between the PDD (0.10425) and the monitoring report (0.1842), raising questions about baseline accuracy
• ⚠Baseline type contradiction: the PDD describes a 'measured' baseline while the validation report confirms a 'modeled' (FOD) baseline, indicating the project-specific baseline is less robust than initially presented
• ⚠First monitoring period delivered only ~34% of the pro-rata ex-ante expectation, suggesting the lifetime estimate may be overly optimistic or the project is underperforming

Credit Vintages

No issuances recorded on the registry.