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GSSmall, Low - Impact HydroTurkeyVintage 2020, 2021AMS-I.D

Degirmen Weir and Hydroelectric Power Plant

GS-3 ↗ · current registry ID: GS1003

#668of 1935 in Renewable energy#137of 295 in Turkey#352of 1801 in Gold Standard (GS)#234of 806 in AMS-I.D

5.5/ 10
Integrity
5.5
Transparency
5.5
Claim Safety
6.0
Documentation
4.5

Audit Analysis

The Degirmen Weir hydro project in Turkey is a Gold Standard small hydro with VVB-confirmed additionality and documented safeguards, but suffers from a notable gap in permanence treatment (reversal risk unaddressed, no buffer pool stated), a high volume of corrective actions during verification, and multiple cross-document contradictions that reduce confidence in the data record. The latest verification shows claimed and verified reductions matching at 25,413 tCO2e, and an earlier period showed 26% under-delivery, which is a conservative signal.

Red Flags

  • Reversal risk for the hydro asset is explicitly 'not addressed' in the verification report, and no buffer pool percentage is stated — a material permanence gap for a dam-based project
  • 26 Corrective Action Requests were raised in a single verification cycle (2023 report), indicating significant documentation and reporting quality issues at the project level
  • Two Findings of Additional Requirements (FAR#2, FAR#3) required independent expert opinions on fish passage design and minimal water flow adequacy prior to registration, flagging unresolved environmental design concerns
  • Minimum extraction confidence is rated 'low', meaning at least one key document was poorly readable, undermining the reliability of the extracted data set

Credit Vintages

IssuedRetiredAvailable
2015
4,4484,4480
2016
13,75813,7580
2017
3,0543,0540
2019
1421420
2020
10,1088,1191,989
2021
7,8802,8805,000
2022
7,2836,871412
Total46,67339,2727,401

Risk Indicators

Additionality

VVB-confirmed combined test

Permanence

mixed evidence / unresolved risk

Leakage

0% deduction, quantified justification but no specific value

Baseline

Project-specific, reassessed 2024

Safeguards

FPIC, grievance mechanism, benefit sharing documented

Double-claim

CORSIA and CCP status not stated

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Analysis ProvenanceScored2026-09-01AMS-I.D

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