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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryIndustryElectrical IndustryBellinzonaPremel SA
Premel SA Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Premel SA is an engineering and service company providing construction, maintenance and overhaul of hydroelectric plants as well as supply and servicing of emergency generator systems. The company designs and implements electromechanical solutions for tunnel ventilation and safety, UPS test benches, water treatment and cogeneration systems, and offers generator rental, maintenance contracts and a 24‑hour on‑call service.

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Offering

Products & services

Industry:Electrical Industry
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Premel SA

✓ Offered5
Emergency generator systems
Emergency generator sets for outdoor and indoor use, with network-parallel or island operation, from 10 kVA to 3 MW; design, build, operation and maintenance.
Hydroelectric power plant systems
Systems for hydroelectric power plants, including design, construction, maintenance and overhaul of plants and components related to hydroelectric power generation.
Tunnel ventilation systems
Technical solutions for road tunnels, with ventilation systems and connected systems for the safety of underground infrastructure.
Wastewater treatment plants
Wastewater treatment plants for the treatment of turbid water, developed as custom technical solutions.
Electrical and automation panels
Electrical and automation panels for industrial and infrastructure plants, including control and switching systems.
Trust & reputation

ranQ Trust Score of Premel SA: 4.3 out of 5.0

Trust Score4.3/ 5.0

Very high

x

Data basis 96% · As of October 2026

Premel SA scores 71.2 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
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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.70.724%
  • 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.67.110%
  • 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.78.08%
Premel SA scores 93.9 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.82.07%
Premel SA 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%
Premel SA scores 42.9 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 35.42.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Premel SA reaches a ranQ Trust Score of 4.3 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.5 out of 5 stars from 13 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
4.5
of 5

Aggregated from 13 reviews across all connected sources

Sources
GGoogle4.513
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Via Riale Righetti 24
6503 Bellinzona

At a glance

Legal form
Corporation
UID
CHE-108.132.781
Founded
1986 · 40 years
Last commercial register change
October 1, 2026
Employees
21 to 50
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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