Skip to main content
ScoredRAINBOWConstructionFRRegistry: RegisteredGeneral Methodologyv2.1

Vestack - France - Scaling of biobased modular building facility

Developer: Vestack

RIV-2023-PROJ-9 ↗

#40of 64 in France#55of 78 in Rainbow Standard

Assessment

CarbonMeld document-based assessment

01020304 Overall 5.3 / 10 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%.

Analysis

The Vestack biobased modular building project in France is a Rainbow-standard construction credit with VVB-verified additionality and a life-cycle assessment, but suffers from a project-specific baseline, a 100-year permanence claim that contradicts the original 50-year PDD figure, and a leakage treatment that was initially unaddressed before being deemed negligible. Multiple contradictions between the 2025 and 2026 verification reports (ERR figures, additionality test type, permanence duration) reduce confidence in the data trail, though the more recent documents are privileged.

Red Flags

4 red flags detected — Unlock with Premium

Findings

Risk Indicators

Additionality

🔒

Permanence

🔒

Leakage

🔒

Baseline

🔒

Safeguards

🔒

Double-claim

🔒

Risk indicator details are a Premium feature

Score Breakdown

Score factors per dimension are a Premium feature — Unlock with Premium

Detailed Analysis

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

Evidence

Eligibility & market

What can you claim with this credit?

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

  • Airlines (CORSIA)

    Not published

    This registry does not publish CORSIA eligibility per project.

  • Integrity label (ICVCM CCP)

    No ICVCM information

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

  • Removal or reduction

    Not determined

    The registry data do not say whether these credits are removals or reductions.

  • 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.

Credit Vintages

Issuance data not yet available — check back soon.

Where to buy

Got an offer for these credits? Check it against the registry →

+ Know where to buy this?

Listing multiple projects? Send us a CSV at [email protected].

Profile & governance

Analysis ProvenanceGeneral Methodologyv2.1

Are you the project owner?

Metadata correction (free)

Name, country, marketplace or links incorrect? Let us know.

Does not modify the score.

[email protected] →

Contest this rating

Something wrong in the analysis, or a registry document we have not used? Send us the link to the public source: you get a reference and an answer within 30 days.

Contest this rating →