Yılmazlar Biogas Power Plant Project

Audit Analysis

The Yılmazlar Biogas Power Plant is a registered VCS biogas project with confirmed additionality and inherently low permanence risk, but the verification report contains 27 material findings and 17 corrective actions that raise serious concerns about the robustness of the underlying data. The project delivered roughly 69% of its pro-rata expected reductions for the elapsed monitoring period, which is conservative, yet key parameters such as the functional newness ratio, usage rates, and CORSIA/CCP status remain unstated. Overall, the project is functional but carries elevated documentation and data-reliability risk.

Project Description

Red Flags

• ⚠27 material findings and 17 corrective actions in the verification report (2024-03-13) indicate significant gaps in baseline equations, monitoring parameters, double-counting verification, and evidence documentation
• ⚠Biofilters were deemed ineffective and had to be replaced with covered pools (CL#01), suggesting the original design assumptions were not met in practice
• ⚠Contradiction in lifetime ERR: 250,982 tCO₂e (validation report, Jan 2024) vs 281,800 tCO₂e (PDD, Feb 2023) — a ~12% discrepancy between the two documents
• ⚠CORSIA eligibility and CCP status are not stated in any available document, leaving dual-channel risk unassessed
• ⚠Functional newness ratio (FNRB) value and method are not stated, preventing independent assessment of the baseline's conservatism

Credit Vintages