CAGLAYANLAR BIOGAS PLANT

Audit Analysis

The Caglayanlar Biogas Plant is a VCS-registered livestock biogas project in Turkey with a VVB-confirmed investment additionality test and no reversal events, but it is operating at roughly half its licensed capacity (4.5 MWe vs 9 MWe) with only 14 of 48 registered farms, resulting in verified emissions reductions of about 14% of the pro-rata PDD expectation. The project-specific modeled baseline, a 0% leakage deduction with a thin justification, and a contradiction on FPIC status introduce moderate integrity concerns. Overall the project is under-crediting rather than over-crediting, which limits greenwashing risk, but the PDD assumptions were significantly optimistic and several material findings (including a calculation deviation) reduce confidence in the MRV chain.

Project Description

Red Flags

• ⚠Verified ERR of 199,525 tCO₂e over 3.25 years is only ~14% of the pro-rata PDD expectation (~1,412,000 tCO₂e), driven by operation at 4.5 MWe vs 9 MWe licensed and 14 of 48 farms — the PDD assumptions were materially wrong
• ⚠FPIC status is contradictory: the validation report (Dec 2023) records FPIC as conducted, while the more recent verification report (Dec 2024) records it as not conducted
• ⚠A calculation deviation on PECO2,Trans,y was flagged in the verification report due to unit-conversion errors and use of total fuel consumption instead of individual parameters
• ⚠Leakage deduction is 0% with a 'quantified' justification in the verification report, yet the PDD (May 2022) states leakage was 'not addressed' — the basis for the zero deduction is not transparently documented

Credit Vintages

No issuances recorded on the registry.