ranQ
ranQ
ranQ
DirectoryIndustriesPlacesKnowledgeComparisonsSoon
Sign inCheck visibility
ranQHSG Startup LabelRecognised by the
HSG Startup Label

The leading AI company directory, built to boost AI visibility.

DEENFRIT
Product
  • Pricing
  • Directory
  • Industries
  • Trust Score
Company
  • About
  • Partner program
  • Contact
  • Legal
© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,952 companies indexed · Last updated: today
DirectoryEnergy & EnvironmentPhotovoltaicsZizersRené Brun Alternative Technik AG
René Brun Alternative Technik AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

René Brun Alternative Technik AG plans and implements energy concepts for heat and electricity, as well as systems using solar power, small-scale hydropower and wind. Its services include off-grid and grid-connected systems, assessments and the renovation of existing installations.

AI-generated
Presence

Service area

Offering

Products & services

Industry:Photovoltaics
LeadhubOutbound Leads by COHAGA

Looking for direct email addresses and phone numbers?

Leadhub delivers verified contact details and decision-makers from over 750,000 Swiss companies — management, procurement, marketing, HR.

Discover Leadhub
4.3/5

René Brun Alternative Technik AG

✓ Offered12
Planning and implementation of integrated energy concepts
Planning and implementation of integrated energy concepts for heat and power, including off-grid and grid-connected systems, assessments, and refurbishment of existing installations.
PV off-grid systems
PV off-grid systems for autonomous power supply, as part of systems for heat and electricity.
PV grid-connected systems
PV grid-connected systems for feeding into and using electricity in conjunction with the public power grid.
Small hydropower plants
Small hydropower plants for using water as a clean energy source, including system design and installation.
Wind power plants
Wind power plants for using wind as a clean energy source, in addition to solar and hydropower plants.
Energy storage systems
Energy storage systems for energy installations to store and supply electricity.
Solar modules
Solar modules as components for solar and photovoltaic systems.
Solar control units
Solar control units for controlling and powering solar installations.
Inverters
Inverters for solar power systems for converting and using solar energy.
Solar controllers
Solar controllers for regulating solar installations and their energy flow.
Batteries
Batteries for energy storage in solar and off-grid systems.
Refrigeration units
Refrigeration units for operation with solar power systems and stand-alone energy systems.
Trust & reputation

ranQ Trust Score of René Brun Alternative Technik AG: 4.3 out of 5.0

Trust Score4.3/ 5.0

Very high

x

Data basis 96% · As of November 2026

René Brun Alternative Technik AG scores 77.3 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.81.624%
  • 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.58.610%
  • 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.88.08%
René Brun Alternative Technik AG scores 85.5 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.55.07%
René Brun Alternative Technik AG scores 86.7 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).86.722%
René Brun Alternative Technik 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

René Brun Alternative Technik AG reaches a ranQ Trust Score of 4.3 out of 5.0 — rated «Very high». The rating draws, among other things, on 5.0 out of 5 stars from 9 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of November 2026.

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

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 9 reviews across all connected sources

Sources
GGoogle59
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

No knowledge articles yet

Once René Brun Alternative Technik AG has claimed this profile, we'll publish editorial articles and case studies here together.

Get started
Comparisons

René Brun Alternative Technik AG in comparison

Soon

Industry comparisons are coming soon

We're preparing industry comparisons that rank René Brun Alternative Technik AG by reviews, experience and specialisations.

Is this your company?

Claim the company profile of René Brun Alternative Technik AG to make its contact details visible. With a plan we additionally create and publish industry comparisons, articles and much more.

Secure profile

Location

Oberauweg 2
7205 Zizers
Opening hours
Mon
Closed
Tue
Closed
Wed
08:00 - 12:00, 13:30 - 18:00
Thu
Closed
Fri
Closed
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-107.976.776
Founded
1998 · 28 years
Last commercial register change
March 1, 2021
Employees
1 to 10

Active in 1 of 26 cantons · 1 municipality

  • GRZizers
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

    Similar companies

    AG
    ARI GROUP SAGL
    Li Curt
    SA
    Sonnbau AG
    Chur
    HE
    hassler energia alternativa ag
    Zillis
    SA
    Solpic AG
    Ilanz
    CG
    Calstrom GmbH
    Trin Mulin
    EP
    Elektro Partner Klosters AG
    Klosters
    GS
    Grischa Solar AG
    Chur
    TA
    tritec AG
    Chur