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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint747,212 companies indexed · Last updated: today
DirectoryCrafts & TradesBuilding automationAppenzellElektro Sonderer AG
Elektro Sonderer AG Logo
Verified· 4 sourcesTrust Score
Summary

About the company

Elektro Sonderer AG plans and installs power and low-voltage systems for new builds and renovations in agriculture, housing and commercial properties. Its services include electrical installations, photovoltaics, smart home and network technology, lighting and security solutions.

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Service area

Offering

Products & services

Industry:Building automationElectrician
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4.4/5

Elektro Sonderer AG

Photovoltaics
✓ Offered9
Electrical installation / planning
Plan and install electrical systems for new builds and renovations; strong- and weak-current systems for residential, commercial, industrial and agricultural buildings, including SIA planning phases and control systems for building services.
Photovoltaics
Photovoltaic systems with in-roof and on-roof mounting systems as well as storage solutions; from planning and consultation through installation to maintenance, including integration into existing or new systems.
E-mobility / smart energy
Plan and install charging stations for single, double and underground garages; dynamic load management, billing systems and integration with new or existing photovoltaic systems.
Smart home
Intelligent building technology for shutters, lighting, alarm systems and heating; central operation, automation, building cabling and later retrofitting.
IT / network
Plan and install IT networks and telephone systems; configure Internet access with conventional or wireless solutions for residential and business properties.
Security
Security systems with intercom, surveillance, alarm and fire-detection systems; consultation, needs clarification and installation for the protection of properties.
Lighting
Lighting concepts and custom lighting systems; on-site analysis, recommendations and energy-efficient solutions for the right lighting atmosphere in rooms.
On-call service
On-call service for emergencies outside regular working hours; telephone availability and service support for urgent malfunctions.
Central vacuum
Install central vacuum systems, including in existing properties; vacuum inlets, a central collection container and hygienic, powerful use.
Trust & reputation

ranQ Trust Score of Elektro Sonderer AG: 4.4 out of 5.0

Trust Score4.4/ 5.0

Very high

x

Data basis 100% · As of November 2026

Elektro Sonderer AG scores 86.9 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.86.224%
  • 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.81.910%
  • 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%
Elektro Sonderer 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%
Elektro Sonderer 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%
Elektro Sonderer AG scores 17.7 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 35.28.64%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.6.74%
Qualifications+0.00

Elektro Sonderer AG reaches a ranQ Trust Score of 4.4 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.9 out of 5 stars from 24 customer reviews. As of November 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
4.9
of 5

Aggregated from 24 reviews across all connected sources

Sources
GGoogle4.924
★TrustpilotSoon
PProvenExpertSoon

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

Press

Media

June 4, 2024Media
«Mitenand gohts no besser»
appenzell24.ch

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Location

Gaiserstrasse 25
9050 Appenzell
Opening hours
Mon
07:30 - 11:30, 13:30 - 17:30
Tue
07:30 - 11:30, 13:30 - 17:30
Wed
07:30 - 11:30, 13:30 - 17:30
Thu
07:30 - 11:30, 13:30 - 17:30
Fri
07:30 - 11:30, 13:30 - 17:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-107.375.708
Founded
1991 · 35 years
Last commercial register change
July 12, 2024
Employees
21 to 50

Active in 1 of 26 cantons

  • AIAppenzell Inner Rhodes
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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