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VCS avoidance Türkiye Registry: Crediting Period Renewal Requested Documentazione completa General Methodology v2.0

Akocak Hydroelectric Power Plant

VCS-535 ↗

6.4 / 10
Integrity
6.2
Transparency
6.0
Claim Safety
6.4
Documentation
7.4

Score Breakdown

Integrity

verified The validation/verification record indicates additionality was confirmed by the VVB using an investment test.

missing Baseline is project-specific and the last baseline reassessment date is not stated in the extracted record; leakage justification is inconsistent across monitoring reports.

Transparency

verified The monitoring report (2021-09-14) provides a defined monitoring period (2016-01-01 to 2020-06-30) and the extracted claimed and verified ERs match (557,944).

missing Multiple contradictions across validation/monitoring documents (ER totals, grid emission factor, safeguards) reduce transparency and auditability.

Claim Safety

verified The project is explicitly not CORSIA-eligible, reducing certain double-claiming/eligibility-related marketing risks.

missing Over-crediting risk is elevated by contradictory ER totals and a potentially erroneous grid emission factor value in an older validation report.

Documentation

verified A relatively complete document set is indicated (PDD, monitoring report, validation report, issuance) with 16 documents used and high extraction confidence.

missing Key items remain missing or inconsistent in the extracted record (baseline reassessment timing, leakage justification consistency, safeguards consistency between validation and monitoring).

Detailed Analysis

Integrity

The validation/verification record indicates additionality was confirmed by the VVB (RINA Services S.p.A.) using an investment test, which supports additionality robustness. However, the baseline is described as project-specific and the timing of any baseline reassessment is not stated in the extracted record, which weakens confidence that baseline assumptions remained appropriate over the crediting period. Leakage is recorded as a 0% deduction, but the monitoring report (2021-09-14) does not address leakage justification, and an earlier monitoring report (2012-12-10) reportedly treated leakage as quantified, creating uncertainty about whether leakage was consistently assessed.

Transparency

The monitoring report (2021-09-14) clearly states the monitoring period (2016-01-01 to 2020-06-30), and the extracted record shows claimed and verified ERs are the same (557,944), with no material findings or corrective actions reported. Transparency is reduced by multiple cross-document contradictions in core quantitative inputs/outputs (ER totals and grid emission factor) and in safeguards-related statements between validation and monitoring documents. These inconsistencies make it harder for an external reviewer to reconcile what was actually validated/verified at each stage.

Claim Safety

The project is explicitly not CORSIA-eligible, which lowers the risk of certain high-stakes aviation-related claims and reduces one channel of double-claim exposure. Nonetheless, claim safety is weakened by contradictions in both ER totals (256,043 vs 557,944 across validation reports) and the grid emission factor (0.645 vs 562), which could indicate unit/decimal issues and potential over- or under-crediting if not clearly resolved. The CCP status is not stated in the extracted record, leaving uncertainty for buyers seeking CCP-aligned claims.

Documentation

The extracted record indicates a reasonably complete documentation package (PDD, monitoring report, validation report, issuance) and a relatively high document count (16) with high extraction confidence, supporting a solid documentation score. However, several important elements are either not stated (e.g., baseline reassessment timing, buffer pool percentage) or inconsistent across documents (leakage justification and safeguards/grievance/FPIC reporting). These gaps and inconsistencies reduce the ability to fully substantiate key quality attributes from the extracted record alone.

Overall

Overall quality is moderate, supported by VVB-confirmed additionality and an extracted match between claimed and verified ERs for the 2016–2020 monitoring period. However, the contradictions materially affect confidence: for ER totals, the more recent validation report (2021-10-18) showing 557,944 is privileged over the older validation report (2016-05-31) showing 256,043 because it is later-dated and aligns with the monitoring report (2021-09-14) extracted totals; the discrepancy still signals reliability risk and lowers scores. For leakage justification, the more recent monitoring report (2021-09-14) stating leakage was not addressed is privileged over the older 2012 monitoring report claiming quantified leakage, because it reflects the latest reporting practice for the credited period; this weakens integrity/claim safety. For safeguards (FPIC, grievance mechanism, benefit sharing), the monitoring report (2021-09-14) is privileged over the older validation report (2016-05-31) because it is later and operational-period reporting is more probative, but the inconsistency still reduces confidence. For the grid emission factor, the 0.645 value from the 2021 validation report is privileged as the plausible magnitude, while the 562 figure from the 2016 validation report is treated as likely unit/format error; the presence of such an error remains a significant red flag.

Audit Analysis

This VCS hydropower project shows moderate integrity: additionality is confirmed by the VVB and no material findings or corrective actions are reported, but baseline updating and leakage treatment are weakly evidenced. Transparency is fair with a clear monitoring period and matching claimed vs verified ERs in the extracted record, yet multiple cross-document inconsistencies reduce confidence in key figures and safeguards reporting.

Project Description

AKOCAK is a hydroelectric power plant project located on Karadere River in Turkey, which generates energy from running waters. The project includes two weirs, Erikli and Akocak, built on Alcak Brook and Karadere branch of the river respectively. It also features a sediment pool and has UTM ED coordinates for each weir.

Red Flags

  • Major inconsistencies across documents for verified/claimed ER totals (256,043 vs 557,944) indicate data reliability issues.
  • Grid emission factor is inconsistent across validation reports (0.645 vs 562), suggesting a unit/decimal error risk that could materially affect credited ERs.
  • Leakage is shown as 0% while the most recent monitoring report does not address leakage justification.

Credit Vintages

Issued Retired Available
2010
10,330 10,330 0
2011
89,097 89,097 0
2012
72,818 72,818 0
2013
90,780 90,769 11
2014
69,165 63,610 5,555
2015
93,383 92,511 872
2016
110,792 95,507 15,285
2017
106,299 102,914 3,385
2018
137,940 137,940 0
2019
106,186 50,235 55,951
2020
96,727 48,342 48,385
Total 983,517 854,073 129,444

Cosa migliorerebbe questo punteggio

  • Provide a clear reconciliation note (or registry-linked evidence) explaining the ER total discrepancy (256,043 vs 557,944) and which monitoring/issuance events each figure corresponds to.
  • Clarify the grid emission factor value and units (and the source year), and document any updates/reassessments of baseline parameters over the crediting period.
  • Include an explicit leakage assessment and justification for a 0% deduction in the latest monitoring/verification documentation, consistent with the applied methodology.

Questi suggerimenti indicano quali prove pubbliche aggiuntive potrebbero migliorare il livello di confidenza di questa valutazione. Non garantiscono un punteggio futuro più alto.

Risk Indicators

Additionality

VVB-confirmed investment test

Permanence

Avoidance project; no reversals reported

Leakage

0% leakage with inconsistent justification

Baseline

Project-specific baseline; reassessment timing unclear

Safeguards

Safeguards reported later but inconsistent across docs

Double-claim

Not CORSIA-eligible; CCP status unclear

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Analysis Provenance Scored 2026-04-02 General Methodology v2.0 Documentazione completa

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