Tatar Hydro Electricity Power Plant

Audit Analysis

The Tatar Hydro project is a registered VCS avoidance project with a VVB-confirmed additionality test and a jurisdictional baseline recently reassessed in 2025. However, the project carries an unusually high volume of material findings (33) and corrective actions (33), and the extraction confidence across source documents is low, raising concerns about data reliability. The project delivered roughly 71% of its pro-rata ex-ante expectation for the 2021–2022 monitoring period, which is conservative but reflects hydro variability.

Project Description

Red Flags

• ⚠33 material findings and 33 corrective actions reported in the verification report, spanning data inconsistencies, outdated methodology versions, missing baseline validity assessments, and unmonitored diesel emissions
• ⚠Additionality test type changed from an investment test (2014 validation report) to a regulatory surplus test (2025 validation report), with the 2014 report noting that barrier analysis was removed in favour of financial analysis only
• ⚠Grid emission factor differs between the PDD (0.4568, 2022 data) and the 2022 verification report (0.53985), and the verification report itself flagged that the Turkey emission factor had not been updated to the most recent value
• ⚠Crediting period contradiction: the 2022 verification report confirms 2013-2023, while the 2025 validation report shows a new period of 2023-2033, suggesting a re-validation that has not been fully reconciled in the extracted record
• ⚠Low extraction confidence across the 18 source documents, meaning key fields (FNRB, usage rates, CCP status, CORSIA eligibility, buffer pool) could not be confirmed

Credit Vintages