ALTACA MERAM BIOGAS PLANT

Audit Analysis

The Altaca Meram Biogas Plant is a Gold Standard biogas-to-electricity project in Turkey with VVB-confirmed additionality and no open material findings, but it carries notable integrity and claim-safety concerns: a 0% leakage deduction with contradictory justification across documents, no stated buffer pool, a project-specific modeled baseline, and a 31% discrepancy between the PDD and monitoring-report ERR figures. Transparency is further weakened by the absence of a verified ERR figure, FNRB method, and usage-monitoring details in the extracted record.

Project Description

Red Flags

• ⚠Leakage deduction of 0% with contradictory justification: the verification report (2025-06-18) records leakage as 'not addressed' while the monitoring report (2025-04-15) states it was 'deemed negligible' — no quantitative analysis or explicit justification is documented in either source.
• ⚠ERR figures differ by 31% between the PDD (110,277 tCO₂e, 2020-10-14) and the monitoring report (144,349 tCO₂e, 2025-04-15); the basis (per-year vs. lifetime) is not clarified in the extracted record, making over- or under-crediting risk difficult to rule out.
• ⚠Crediting period is inconsistent: the validation report (2024-01-08) lists 2021-01-01 to 2025-12-31, while the verification report (2025-06-18) lists 2022-07-01 to 2027-06-30 — a shift of roughly 18 months in both start and end dates.

Credit Vintages