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

About the company

Plattenstrom GmbH designs, supplies and installs photovoltaic systems, including rooftop and in‑roof installations, balcony PV kits and custom solar solutions. The company sells modules, storage systems and mounting components and provides planning, permitting support, roof covering and installation services.

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Offering

Products & services

Industry:Solar & PhotovoltaicsEnergy Industry
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4.2/5

Plattenstrom GmbH

✓ Offered6
Solar systems / Photovoltaics
Roof-mounted systems, integrated-in-roof systems, roof refurbishment and roof insulation in connection with solar modules; installation on tile, shingle, metal and flat roofs as well as on walls or railings.
Balcony solar system
Small solar systems with 2 to 16 m² PV panels, inverter, plug-and-play cables, optional storage up to 16 kWh and easy installation or self-assembly.
Solar storage
Battery storage for photovoltaics for self-consumption optimisation and self-sufficiency; storage solutions up to 16 kWh as well as grant advisory and quotations for farmers in the canton of Solothurn.
Solar hot water system
Photovoltaic-based hot water preparation with heating element on the hot water cylinder, solar modules and solar cables; described without inverter and without grid connection registration.
Custom solar system solutions
Tailor-made special solutions and specific mounting systems for photovoltaic installations, including consultation and fabrication according to request.
Components and accessories for solar systems
Solar modules, storage units, solar cables, battery cables, connectors, Y-connectors, profiles, roof hooks, screws, nuts, washers and other mounting components.
Trust & reputation

ranQ Trust Score of Plattenstrom GmbH: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 96% · As of October 2026

Plattenstrom GmbH scores 89.6 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
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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.90.324%
  • 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.83.810%
  • 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.95.08%
Plattenstrom GmbH scores 65.3 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.50.012%
  • 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.70.07%
Plattenstrom 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%
Plattenstrom GmbH scores 0.0 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 35.0.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Plattenstrom GmbH reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 5.0 out of 5 stars from 26 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 26 reviews across all connected sources

Sources
GGoogle526
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Allmendstrasse 19
2540 Grenchen

At a glance

Legal form
Limited Liability Company
UID
CHE-134.387.447
Founded
2023 · 3 years
Last commercial register change
March 10, 2023
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.
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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