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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryEnergy & EnvironmentSolar & PhotovoltaicsStallikonsundesign GmbH
sundesign GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The company sundesign | photovoltaic engineering primarily deals with the planning, conception and implementation of photovoltaic systems and their integration into buildings. The core activities include: feasibility studies and economic calculations for photovoltaic projects, planning and engineering of photovoltaic systems, consulting and inspection during the construction and operation phase, conception of solar power solutions for builders, architects and planners, and integration of photovoltaic systems into buildings, including facades and roof systems. The company thus offers comprehensive services for the planning, realization and maintenance of photovoltaic projects.

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Products & services

Industry:Solar & Photovoltaics
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sundesign GmbH

✓ Offered6
Feasibility
Feasibility studies with site analysis, variant proposals, profitability calculations and self-consumption solution for planned photovoltaic projects.
Engineering
System design, structural engineering, yield forecasts and permitting planning for photovoltaic plants, including liaison with energy utilities, Pronovo and building authorities.
Tendering
Preparation of specifications of services and tender documents, analysis and evaluation of bids, as well as selection and contract award recommendation for photovoltaic plants.
Construction and operating phase
Client representation, construction management, testing services, functional tests, acceptance measurements, monitoring, technical operation management and maintenance concepts for photovoltaic plants.
Planning office for photovoltaic systems
Design and integration of photovoltaic systems for roofs, façades and special solutions, from small installations to projects in the megawatt range.
Technical integration of building-integrated photovoltaic systems (BIPV)
Development of project-specific special solutions and technical integration of building-integrated photovoltaic systems for buildings and façades.
Trust & reputation

ranQ Trust Score of sundesign GmbH: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

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Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

sundesign GmbH has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
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CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
sundesign GmbH scores 83.0 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
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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%
sundesign GmbH 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%
sundesign GmbH scores 45.7 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
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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 35.45.74%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

sundesign GmbH reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 54%, 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.

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Location

Gamlikon 14
8143 Stallikon

At a glance

Legal form
Limited Liability Company
UID
CHE-114.933.772
Founded
2009 · 17 years
Last commercial register change
January 13, 2020
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.
88.0
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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