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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryEnergy & EnvironmentSolar & PhotovoltaicsLausanneSolstis SA
Solstis SA Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Solstis SA delivers turnkey solar projects and services for photovoltaic systems. Its offerings include design, installation and commissioning of PV systems, battery storage, charging stations, maintenance and monitoring, and support for permits and subsidy applications.

AI-generated
Offering

Products & services

Industry:Solar & Photovoltaics
✓ Offered6
Photovoltaic system installation
Photovoltaic panel installations tailored to each building, including feasibility study, sizing, installation, connection and commissioning, for private customers, businesses and public authorities.
Battery storage
Battery storage solutions to complement the photovoltaic installation, increase self-consumption and secure electricity supply.
Maintenance and service contracts
Maintenance, servicing, monitoring and after-sales follow-up for solar installations, including maintenance contracts and after-sales service.
Charging stations
Charging stations associated with solar projects, offered alongside the site's energy solutions and contact options.
Self-consumption optimisation
Solutions for optimising self-consumption of photovoltaic installations, in particular via storage, monitoring and maintenance contracts.
Contracting for businesses
Contracting solutions for businesses around photovoltaic installations, with project support and technical take-over.
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4.7/5

Solstis SA

Trust & reputation

ranQ Trust Score of Solstis SA: 4.7 out of 5.0

Trust Score4.7/ 5.0

Excellent

x

Data basis 96% · As of October 2026

Solstis SA scores 89.4 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.83.124%
  • 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.100.010%
  • 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%
Solstis SA scores 95.9 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.90.07%
Solstis SA 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%
Solstis SA scores 100.0 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 35.100.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Solstis SA reaches a ranQ Trust Score of 4.7 out of 5.0 — rated «Excellent». The rating draws, among other things, on 4.7 out of 5 stars from 96 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
4.7
of 5

Aggregated from 96 reviews across all connected sources

Sources
GGoogle4.796
★TrustpilotSoon
PProvenExpertSoon

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

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Comparisons

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Location

Rue de Sébeillon 9 B
1004 Lausanne

At a glance

Legal form
Corporation
UID
CHE-108.474.715
Founded
1996 · 30 years
Last commercial register change
August 14, 2026
Employees
51 to 100
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.85.03%
    • Full methodology

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