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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryCrafts & TradesElectrical Planning & InstallationArosaSommerau Elektro MM AG
Sommerau Elektro MM AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Sommerau Elektro MM AG is an electrical services company that provides planning, installation and maintenance of electrical systems and sells and services household appliances. Its services include photovoltaic systems, electric vehicle charging stations, smart home and automation solutions, lighting and safety systems, inspections and a 24/7 emergency service.

AI-generated
Offering

Products & services

Industry:Electrical Planning & Installation
✓ Offered10
Electrical installations
Planning and execution of electrical installations in residential and commercial properties, including consultation, installation and repair work related to power.
Photovoltaic systems
Photovoltaic systems for homes and businesses, from planning and installation to maintenance for using solar energy.
Smart home and building automation
Smart home and automation solutions, from intelligent lighting to complete building automation for more comfort, safety and efficiency.
EV charging stations
Planning and installation of EV charging solutions for electric vehicles in single-family homes, multi-family buildings and commercial properties.
Household appliances with service
Sale of household appliances as well as delivery, installation, commissioning, maintenance and repair of kitchen appliances, washing machines and other devices.
Lighting solutions
Tailored lighting concepts for rooms, designed to be cosy, functional or representative depending on requirements.
Security systems
Alarm systems, fire detectors and other security solutions for residential and commercial properties.
Networks and telephone systems
Set-up of IT and communication solutions for private and business customers.
Inspections and safety certificates
Statutorily required inspections of electrical installations as well as preparation of safety certificates according to the relevant standards.
Maintenance and service contracts
Maintenance of electrical installations, photovoltaic systems and smart home systems with regular checks to prevent failures.
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4.0/5

Sommerau Elektro MM AG

Trust & reputation

ranQ Trust Score of Sommerau Elektro MM AG: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of October 2026

Sommerau Elektro MM AG scores 57.2 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.62.524%
  • 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.27.910%
  • 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.78.08%
Sommerau Elektro MM AG scores 86.4 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.89.612%
  • 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%
Sommerau Elektro MM 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%
Sommerau Elektro MM AG scores 20.0 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 35.20.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Sommerau Elektro MM AG reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 4.0 out of 5 stars from 2 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
of 5

Aggregated from 2 reviews across all connected sources

Sources
GGoogle42
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Quellenweg 1
7050 Arosa
Opening hours
Mon
07:30 - 12:00, 13:30 - 17:00
Tue
07:30 - 12:00, 13:30 - 17:00
Wed
07:30 - 12:00, 13:30 - 17:00
Thu
07:30 - 12:00, 13:30 - 17:00
Fri
07:30 - 12:00, 13:30 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-385.475.790
Founded
2015 · 11 years
Last commercial register change
July 2, 2026
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.
100.0
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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