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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryEnergy & EnvironmentSolar & PhotovoltaicsBussignyDavid Sun Energie Solaire Sàrl
David Sun Energie Solaire Sàrl Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Davidsun is the installation, maintenance and repair of photovoltaic systems, including the planning, assembly and commissioning of solar modules on various types of roofs, as well as the provision of service and maintenance services after installation.

AI-generated
Offering

Products & services

Industry:Solar & Photovoltaics
✓ Offered4
Photovoltaic system installation
Installation of photovoltaic panels on flat and pitched roofs, from study to execution, including administrative procedures and implementation of safety measures.
Photovoltaic advice
Advice for photovoltaic installation solutions tailored to needs, technical site visit, detailed planning, technical support and selection of suitable panels and structures.
Photovoltaic subcontracting
Subcontracting for companies, production fully or partially assigned, with services also carried out for companies such as Romande Energie.
Photovoltaic after-sales service
Commissioning, maintenance, repair, troubleshooting and monitoring of photovoltaic installations after installation.
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3.9/5

David Sun Energie Solaire Sàrl

Trust & reputation

ranQ Trust Score of David Sun Energie Solaire Sàrl: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 96% · As of October 2026

David Sun Energie Solaire Sàrl scores 66.0 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.80.624%
  • 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.55.910%
  • 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.35.08%
David Sun Energie Solaire Sàrl scores 70.2 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.70.212%
  • 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%
David Sun Energie Solaire Sàrl scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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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%
David Sun Energie Solaire Sàrl scores 2.6 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 35.2.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

David Sun Energie Solaire Sàrl reaches a ranQ Trust Score of 3.9 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 8 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of October 2026.

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

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 8 reviews across all connected sources

Sources
GGoogle58
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Rue de la Gare 6
1030 Bussigny
Opening hours
Mon
07:30 - 17:00
Tue
07:30 - 17:00
Wed
07:30 - 17:00
Thu
07:30 - 17:00
Fri
07:30 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-401.689.570
Founded
2020 · 6 years
Last commercial register change
February 19, 2020
Employees
1 to 10
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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