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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringZermattVoltage ENGINEERING AG
Voltage ENGINEERING AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Voltage ENGINEERING AG is the planning, consulting and implementation of electrical systems and installations, including: electrical planning and design, lighting planning and design, energy efficiency and optimization, alternative energy sources, interface coordination, safety inspections and analyses, and lightning protection. The company provides neutral and independent consulting and planning for electrical systems and installations and coordinates the efficient implementation of projects.

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Products & services

Industry:Technical Consulting & Engineering
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4.0/5

Voltage ENGINEERING AG

✓ Offered10
Neutral electrical planning
Planning and project management of electrical infrastructures, including transparent cost control, site supervision and support from the concept phase through to execution.
Lighting design
Lighting design for residential spaces, offices, hotels, restaurants, retail units and industrial buildings, using LED technology, energy-efficient controls and consideration of operating costs.
Energy efficiency
Energy consulting to analyse energy consumption and costs, and to derive measures for more efficient use, renewable energies and mobility-related concepts.
Alternative energy sources
Advisory, planning and support for photovoltaic systems and other renewable energies, including yield calculations, guidance on subsidies and financing models.
Electrical interface coordination
Coordination of networked technical systems and building services so they work together, can be operated more easily and maintenance costs decrease.
Integral safety checks
Comprehensive safety checks for building and plant systems across planning, execution and operation, including documentation of results and testing of fault scenarios.
Status analysis
As-is and to-be condition analyses with neutral expert assessments, needs identification and the basis for solution proposals and project progress.
Building Information Modeling (BIM)
Digital modelling to optimize the planning, execution and operation of buildings, with early detection and resolution of planning issues.
Partial phases according to SIA108
Partial services according to SIA 108/112, including feasibility studies, neutral cost estimates, object-neutral consulting and independent expert assessments.
Lightning protection
Planning and design of lightning protection systems, taking into account protection classes, protection zones, SEV guidelines and cantonal fire protection regulations.
Trust & reputation

ranQ Trust Score of Voltage ENGINEERING AG: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of October 2026

Voltage ENGINEERING AG scores 68.3 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.73.124%
  • 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.35.310%
  • 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%
Voltage ENGINEERING AG scores 72.8 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%
Voltage ENGINEERING AG 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%
Voltage ENGINEERING AG scores 10.3 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 35.10.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Voltage ENGINEERING AG reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 3 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 3 reviews across all connected sources

Sources
GGoogle53
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Hofmattstrasse 7
3920 Zermatt

At a glance

Legal form
Corporation
UID
CHE-261.425.329
Founded
2020 · 6 years
Last commercial register change
June 15, 2026
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.
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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