CYY Global Plus Wastewater Treatment and Biogas Utilization Project

Audit Analysis

A VCS-registered biogas project in Thailand with confirmed additionality, a quantified 10% leakage deduction, and no material findings or corrective actions. However, the verified ERR for the 2024–25 monitoring period is roughly 280–690% of the pro-rata lifetime expectation, raising over-crediting concerns, and the project-specific modeled baseline lacks a recent reassessment. CORSIA and CCP eligibility are not stated in any available document.

Project Description

Red Flags

• ⚠Verified ERR of 132,630 tCO₂e for a single 1-year monitoring period is approximately 284–690% of the pro-rata expectation derived from the lifetime claimed ERR (134,438–326,361 tCO₂e over 7 years), indicating a potential baseline underestimation or monitoring anomaly that warrants scrutiny.
• ⚠Two monitoring reports (July 2025 and September 2024) report materially different ERR figures (134,438 vs 326,361 tCO₂e) for the 'total_err_claimed' field, creating uncertainty about the correct lifetime baseline.
• ⚠Benefit-sharing documentation was present in the 2022 verification report but is absent from the 2026 verification report, suggesting a regression in social-safeguard reporting.
• ⚠CORSIA eligibility and CCP status are not stated in any extracted document, leaving dual-channel risk unassessed.

Credit Vintages