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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,952 companies indexed · Last updated: today
DirectoryEnergy & EnvironmentPhotovoltaicsWilen B. WollerauISSOL Schweiz AG
ISSOL Schweiz AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

ISSOL Schweiz AG develops and supplies building-integrated photovoltaic solutions, including solar roof tiles and active glazing for roofs and façades. Its services also include design, technical engineering and project management for BIPV and façade projects.

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Service area

Offering

Products & services

Industry:Photovoltaics
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ISSOL Schweiz AG

✓ Offered10
Building-integrated photovoltaics (BIPV)
Planning and implementation of building-integrated photovoltaics with tender documents, design and budgets, glass and electrical planning, installation concepts, yield and shading studies.
Active glass
Active glass products such as BIPV, BIPV roof tiles, electrochromic glass, thermochromic glass, LED glass, and active insulated glazing units.
Facade engineering
Facade engineering with tender drawings and budgets, structural calculations, execution and fabrication details, standard and special cladding systems, and roof solutions.
Building physics
Building-physics studies on thermal performance and moisture protection, daylight and lighting studies, building calculations, and regulatory analyses.
Renewable energy projects
Industrial photovoltaic projects, electricity storage, and electromobility for renewable energy initiatives.
Structural engineering services
Structural calculations for glass, metal, and timber structures, as well as tender drawings, workshop drawings, and fabrication details.
Project management
Budget preparation, monitoring of production and delivery, assembling the building team, site supervision, and reporting.
Solrif BC Full Black
Integrated photovoltaic roofing solution with back-contact technology, full-black surface, 440 to 445 Wp, hail resistance class 5, and use for full and partial areas.
SolarTerra
Integrated solar roof tiles for traditional buildings with design from Switzerland; replace conventional roof tiles and generate electricity; custom sizes available.
Wood Solar
Photovoltaic façade elements with a wood look, printed glass, high transparency, solar cells integrated on the back, and custom shapes and sizes.
Trust & reputation

ranQ Trust Score of ISSOL Schweiz AG: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 96% · As of November 2026

ISSOL Schweiz AG scores 47.2 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.63.624%
  • 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.17.610%
  • 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.35.08%
ISSOL Schweiz AG scores 83.5 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.86.512%
  • 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%
ISSOL Schweiz 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%
ISSOL Schweiz AG scores 74.3 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 35.74.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

ISSOL Schweiz AG reaches a ranQ Trust Score of 3.9 out of 5.0 — rated «High». The rating draws, among other things, on 4.0 out of 5 stars from 1 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
4
of 5

Aggregated from 1 reviews across all connected sources

Sources
GGoogle41
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Hänggiwiesstrasse 5
8832 Wilen B. Wollerau
Opening hours
Mon
09:00 - 17:00
Tue
09:00 - 17:00
Wed
09:00 - 17:00
Thu
09:00 - 17:00
Fri
09:00 - 15:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-491.777.136
Founded
2016 · 10 years
Last commercial register change
August 17, 2020
Employees
11 to 20

Active in 1 of 26 cantons

  • SZSchwyz
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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