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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringCrissierPerrin & Spaeth bureau d'ingénieurs conseils S.A.
Perrin & Spaeth bureau d'ingénieurs conseils S.A. Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Perrin & Spaeth SA is an engineering firm specializing in the planning and consulting of electrical installations and energy systems. The core activities include the creation of studies and technical documents for the field of electrical installations, including: medium voltage installations, high current installations, low current installations, and consulting services for energy and security systems. The company offers its services to architects, builders, and other stakeholders in the construction industry.

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Products & services

Industry:Technical Consulting & Engineering
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Perrin & Spaeth bureau d'ingénieurs conseils S.A.

Electrical Planning & Installation
✓ Offered4
Power installations
Distribution and power installations, in particular electrical switchboards, emergency generators, UPS/ASSC, independent networks, photovoltaic systems, home automation, lightning protection and charging points.
Low-current installations
Copper and fibre-optic cabling and distribution, multimedia and surveillance, security systems, telecommunications, EMS and security systems, with computer networks, VoIP, Wi‑Fi, fire and intrusion detection.
Medium-voltage installations
Medium-voltage distribution and transformation stations, with medium-voltage networks, lines for private grid, MV switchgear cells, MV protection, MV/LV transformers, metering and ORNI shielding against radiation.
Consulting
Expert mandates and sustainability support, assistance to the project owner, disputes, audit of electricity energy consumption and damage assessment for electrical installations.
Trust & reputation

ranQ Trust Score of Perrin & Spaeth bureau d'ingénieurs conseils S.A.: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of October 2026

Perrin & Spaeth bureau d'ingénieurs conseils S.A. scores 59.9 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.72.524%
  • 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.49.510%
  • 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%
Perrin & Spaeth bureau d'ingénieurs conseils S.A. scores 89.3 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
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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%
Perrin & Spaeth bureau d'ingénieurs conseils S.A. 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%
Perrin & Spaeth bureau d'ingénieurs conseils S.A. scores 40.0 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 35.40.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Perrin & Spaeth bureau d'ingénieurs conseils S.A. reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 4.7 out of 5 stars from 6 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 6 reviews across all connected sources

Sources
GGoogle4.76
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Chemin du Closalet 12
1023 Crissier

At a glance

Legal form
Corporation
UID
CHE-106.009.454
Founded
1986 · 40 years
Last commercial register change
March 30, 2021
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.100.06%
  • 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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