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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryEnergy & EnvironmentSolar & PhotovoltaicsGrüningenEdwin Kunz AG
Edwin Kunz AG Logo
Verified· 4 sourcesTrust Score
Summary

About the company

The core activity of E. Kunz AG encompasses the planning, installation and maintenance of electrical systems, including photovoltaic and e-mobility solutions, as well as the provision of ICT services such as network and communication technology, security and surveillance systems, software development and system engineering.

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Offering

Products & services

Industry:Solar & Photovoltaics
✓ Offered5
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Edwin Kunz AG

Planning and engineering
Electrical planning, project and concept planning, detailed design, CAD revision documents and tender documents for new builds and conversions in residential, office, industrial and commercial buildings.
Installations
Service work, electrical installations for renovations and new builds, support for installations in care homes and industrial buildings, as well as advice on lighting, multimedia, audio and networking technology.
Photovoltaics
Advice, planning, installation and monitoring of photovoltaic systems including energy storage, registrations, approvals, recording of results and coordination with tradespeople and suppliers.
E-mobility
Planning and installation of charging stations for electric vehicles, as well as energy management solutions for single-family homes and shared garages.
Electrical installation inspections
Inspection of electrical installations in accordance with the NIV, periodic inspections, acceptance inspections and final inspections, including a safety certificate.
Trust & reputation

ranQ Trust Score of Edwin Kunz AG: 4.3 out of 5.0

Trust Score4.3/ 5.0

Very high

x

Data basis 100% · As of October 2026

Edwin Kunz AG scores 78.2 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.71.924%
  • 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.79.710%
  • 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%
Edwin Kunz AG scores 92.3 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%
Edwin Kunz AG scores 86.7 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).86.722%
Edwin Kunz AG scores 12.9 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 35.25.74%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.0.04%
Qualifications+0.00

Edwin Kunz AG 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 22 customer reviews. 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 22 reviews across all connected sources

Sources
GGoogle4.522
★TrustpilotSoon
PProvenExpertSoon

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

Press

Media

June 1, 2023Media
50 Jahre voller Energie | Grüningen
zuerioberland24.ch

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Location

Industriestrasse 7b
8627 Grüningen
Opening hours
Mon
24h
Tue
24h
Wed
24h
Thu
24h
Fri
24h
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-105.747.621
Founded
1973 · 53 years
Last commercial register change
June 18, 2024
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.70.03%
    • Full methodology

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