Gonen Biogas Plant
GS-100 ↗ · current registry ID: GS1160
#57of 352 in Biomass#157of 295 in Turkey#438of 1801 in Gold Standard (GS)#15of 66 in ACM0010
Audit Analysis
The Gonen Biogas Plant is a Gold Standard biomass cogeneration project in Turkey with a confirmed investment additionality test and no reported reversal events. However, the project delivered only about 50% of its pro-rata ex-ante expectation for the monitoring period, the buffer pool is not documented, and several key parameters (leakage deduction percentage, FNRB, usage rates) remain unspecified. The 31 corrective action requests during verification, while all closed, and the crediting-period discrepancy between documents introduce moderate reliability concerns.
Red Flags
- Verified ERR of 55,158 represents only ~50% of the pro-rata ex-ante expectation (~109,440) for the 21-month monitoring period, indicating significant under-delivery against the lifetime estimate of 437,759
- Crediting period dates conflict between the verification report (2018–2025) and the monitoring report (2020–2027), creating uncertainty about the applicable crediting window
- 31 corrective action requests were issued during verification (all closed), including correction of the grid emission factor and removal of two farms from the baseline
Credit Vintages
| Issued | Retired | Available | ||
|---|---|---|---|---|
| 2020 | 23,824 | 0 | 23,824 | |
| 2021 | 27,077 | 190 | 26,887 | |
| 2022 | 4,256 | 0 | 4,256 | |
| Total | 55,157 | 190 | 54,967 |
Risk Indicators
VVB-confirmed investment test
no reversals
Quantified but deduction % not stated
Project-specific; reassessment timing not stated
FPIC, grievance mechanism, benefit sharing documented
CORSIA and CCP status not stated
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