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Re-assessment pendingGSOtherSwitzerlandRegistry: Registered

GS11623 GS11627 RVPA-9 CO2 Sequestration at a Swiss Concrete Recycler using the Neustark Technology

Developer: Neustark AG

GS-4375 ↗ · current registry ID: GS12332

Worked comparison example (English)

#19of 27 in Switzerland#1327of 2179 in Gold Standard (GS)

Score from methodology v2.1 (analysis of 2 Sep 2026). Re-assessment under v2.2 pending.

Assessment

CarbonMeld document-based assessment

01020304 Overall 5.0 / 10
Integrity 🔒 Transparency 🔒 Claim Safety 🔒 Documentation 🔒
Dimension scores are locked — the faint arcs are empty tracks, not zero scores.

Scale 0–10 · method weights: integrity 35% · transparency 25% · claim safety 25% · documentation 15%.

Re-assessment pending · v2.1

Scored2026-09-02medium confidence

evidence: 19/28 registry documents analyzed · 5 red flags

Generated by CarbonMeld Analysis Pipeline · Methodology · Editorial Policy · About the System
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How this analysis was made

Standard
Gold Standard (GS) How our current method reads projects of this standard
Methodology
Carbon sequestration through accelerated carbonation of concrete aggregate No methodology-specific rules: the general rules apply. Read the general rules
Our method
CarbonMeld methodology v2.1 · analysed on 2 Sep 2026 · 19/28 registry documents analyzed · re-assessment under v2.2 pending

Analysis

A Swiss accelerated-carbonation project that sequesters biogenic CO₂ into demolition concrete, verified by Earthood Services with a combined additionality test confirmed. The claimed and verified ERR figures match at 952 tCO₂ for the monitoring period, but permanence risk is unaddressed (no buffer pool, reversal scenarios not discussed), leakage is described as quantified yet no deduction percentage is stated, and the project is CORSIA-eligible, creating a dual-channel risk. Multiple corrective actions and a low extraction confidence level temper confidence in the documentation.

Red Flags

5 red flags detected — Unlock with Premium

Findings

Risk Indicators

Additionality

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Permanence

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Leakage

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Baseline

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Safeguards

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Double-claim

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Risk indicator details are a Premium feature

Score Breakdown

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Gates applied

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Detailed Analysis

The detailed per-dimension analysis is a Premium feature — Unlock with Premium

Evidence

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On this page: the analysis of 2 Sep 2026, marked “Re-assessment pending”. Per-dimension scores, risk indicators, 5 red flags, score factors, detailed analysis, and 28 registry documents (19 analyzed).

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Eligibility & market

What can you claim with this credit?

Four checks buyers ask about, from the registry and the Integrity Council (ICVCM).

  • Airlines (CORSIA)

    Stated in the project documents

    The documents claim CORSIA eligibility, but no registry label confirms it: check vintage and authorization.

    Source: project documents (not confirmed by the registry) · documents analysed on 2 Sep 2026

    Covers: what the project documents state — not a registry record

  • Integrity label (ICVCM CCP)

    No ICVCM information

    No CCP label and no ICVCM decision found for this project's methodology.

  • Removal or reduction

    Carbon removal

    Takes CO₂ out of the atmosphere — the only type that can neutralise residual emissions in an SBTi net-zero claim.

    Source: registry label · read on 2 Nov 2026

    Covers: the project type, not a label on individual credits

  • Paris Agreement (Article 6)

    Not published

    This registry does not publish Article 6 authorizations.

Information only, from public sources. Claim rules (CORSIA, SBTi, EU rules on green claims) change: check them before making a public claim. Since 27 September 2026, EU consumer rules do not allow “climate neutral” product claims based on offsets.

Registry labels last checked:2026-11-02

Credit VintagesExhausted

IssuedRetiredAvailable
2023
2032030
2024
5415410
Total7447440

Retired by

Organisations named as beneficiaries in the registry's public retirement records.

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Profile & governance

Methodology·Editorial Policy·About the System

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