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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryEnergy & EnvironmentSolar & PhotovoltaicsUnterlunkhofenStähelin Solar
Stähelin Solar Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Stähelin Solar provides design, installation and maintenance of photovoltaic systems, including battery storage, emergency‑power systems, self‑consumption optimization, energy‑management solutions and e‑mobility integration.

AI-generated
Offering

Products & services

Industry:Solar & Photovoltaics
✓ Offered11
Photovoltaic systems
Photovoltaic systems for homes and businesses, from consultation and planning through to installation, commissioning and ongoing support.
Battery storage solutions
Battery storage solutions as part of solar system planning, for storing solar power and making better use of self-consumption.
Emergency power systems
Emergency power systems for solar installations, to secure electricity supply in the event of failures and to increase independence from the grid.
Self-consumption optimisation
Self-consumption optimisation for solar systems, so that the electricity produced on site is used directly and grid export is reduced.
Energy management systems
Energy management systems for controlling and optimising solar power consumption in interaction with photovoltaic systems.
Collective self-consumption solutions
Collective self-consumption (ZEV) for shared use of solar power and optimisation of self-consumption.
In-roof mounting systems
In-roof mounting systems as an installation solution for photovoltaic systems, integrated into the roof surface.
Butterfly systems for flat roofs
Butterfly systems for flat roofs as a mounting and planning solution for photovoltaic systems on flat roofs.
E-mobility solutions
E-mobility solutions in conjunction with solar systems and energy management.
Installation and execution of solar systems
Installation and execution of solar systems, including coordination and administrative tasks up to the operational system.
Service, maintenance and cleaning
Service, maintenance and cleaning of solar systems to ensure efficiency, service life and trouble-free operation.
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4.3/5

Stähelin Solar

Trust & reputation

ranQ Trust Score of Stähelin Solar: 4.3 out of 5.0

Trust Score4.3/ 5.0

Very high

x

Data basis 96% · As of October 2026

Stähelin Solar scores 81.7 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.83.324%
  • 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.63.210%
  • 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.100.08%
Stähelin Solar scores 78.5 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%
Stähelin Solar scores 85.0 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).85.022%
Stähelin Solar 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

Stähelin Solar 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 11 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 11 reviews across all connected sources

Sources
GGoogle511
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Erlihofstrasse 10
8918 Unterlunkhofen

At a glance

Legal form
Sole proprietorship
UID
CHE-115.711.381
Founded
2010 · 16 years
Last commercial register change
October 8, 2014
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.
67.0
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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