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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint747,212 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureElectrical design engineerLe LanderonAtelier21 Sàrl
Atelier21 Sàrl Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Atelier21 Sàrl carries out studies and work related to the use of energy. Its activities also include implementing, maintaining and operating technical installations.

AI-generated
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Service area

Offering

Products & services

Industry:Electrical design engineerEnergy consulting
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4.1/5

Atelier21 Sàrl

Photovoltaics
✓ Offered4
Electrical studies and engineering
Comprehensive scope of electrical engineer services according to SIA 108, from preliminary design to final account, including monitoring of guarantees, expertise for electrical installations and planning.
Renewable energy production
Electricity generation using photovoltaic panels, solar panels for domestic hot water, solar hot-air panels and installation of wind turbines.
Heat pumps and energy recovery
Heat pumps, energy recovery, energy audits and optimisation of energy consumption for technical installations.
Technical installations and installations management
Implementation, maintenance and operation of technical installations, with management of the installations and installation for rainwater recovery.
Trust & reputation

ranQ Trust Score of Atelier21 Sàrl: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of November 2026

Without public customer reviews the score stays capped.

Atelier21 Sàrl has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
x
CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
Atelier21 Sàrl scores 83.0 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.100.012%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.55.07%
Atelier21 Sàrl scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).85.022%
Atelier21 Sàrl scores 1.1 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.1.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Atelier21 Sàrl reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 54%, so the score is backed by part of the criteria. As of November 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Knowledge

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Location

Rue de Pont-de-Vaux 21
2525 Le Landeron

At a glance

Legal form
Limited Liability Company
UID
CHE-114.397.626
Founded
2008 · 18 years
Last commercial register change
July 8, 2008
Employees
1 to 10

Active in 1 of 26 cantons · 1 municipality

  • NELe Landeron
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
88.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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