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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryCrafts & TradesElectrical Planning & InstallationBussignyDuvoisin-Groux SA
Duvoisin-Groux SA Logo
Verified· 4 sourcesTrust Score
Summary

About the company

The core activity of Duvoisin-Groux is the planning, construction and maintenance of infrastructure for energy, mobility, lighting and telecommunications. The company provides services in these areas to shape the infrastructure for the future.

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Offering

Products & services

Industry:Electrical Planning & Installation
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Duvoisin-Groux SA

Telecommunications
✓ Offered8
Design and implementation of network infrastructure projects
Design and implementation of network infrastructure projects, from planning to handover, for electrical, telecom and data networks.
Energy networks MV/LV/HV
Construction, maintenance and fault repair of overhead and underground networks for low, medium and high voltage, with MV–LV stations, transformer substations and a 24/7 on-call duty service.
Telecommunications and data networks
Construction and maintenance of telecom and data networks in copper and fibre optic, with planning, cabling, schematics, maintenance and 24/7 fault repair.
Mobility infrastructures
Comprehensive services for road, motorway, tunnel and public transport infrastructures: MV/LV stations, lighting, signalling, telecommunications and charging points.
Public and sports lighting
Construction, modernisation, maintenance and fault repair of public lighting networks and lighting systems for sports facilities, with optimisation of energy consumption and energy management.
Heritage illumination
Enhancement and illumination of buildings and objects, decorations and illuminations for events and celebrations, with advice, on-site testing, installation, removal and storage.
DG Lux - Asset management
Static and dynamic remote management of lighting points, digitisation of lighting infrastructure, centralisation of data and automated management of the life cycle.
Green Energy Solutions
PV potential studies and self-consumption, planning of PV installations and storage, energy concepts, optimisation of grid connection and microgrid/RCP studies.
Trust & reputation

ranQ Trust Score of Duvoisin-Groux SA: 4.3 out of 5.0

Trust Score4.3/ 5.0

Very high

x

Data basis 100% · As of October 2026

Duvoisin-Groux SA scores 73.1 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.61.424%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.83.810%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.95.08%
Duvoisin-Groux SA scores 89.3 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.70.07%
Duvoisin-Groux SA scores 86.7 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).86.722%
Duvoisin-Groux SA scores 57.2 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 35.94.34%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.20.04%
Qualifications+0.00

Duvoisin-Groux SA reaches a ranQ Trust Score of 4.3 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.2 out of 5 stars from 26 customer reviews. As of October 2026.

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

Reviews

Aggregated rating

Aggregated rating
4.2
of 5

Aggregated from 26 reviews across all connected sources

Sources
GGoogle4.226
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

Press

Media

November 19, 2025Media
«L’apprentissage est une belle voie vers l’avenir»
24heures.ch

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Location

Chemin de Cudrex 6
1030 Bussigny

At a glance

Legal form
Corporation
UID
CHE-101.617.882
Founded
1989 · 37 years
Last commercial register change
July 1, 2026
Employees
11 to 20
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.
100.0
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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