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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryEnergy & EnvironmentSolar & PhotovoltaicsWettingenJOMA Solar GmbH
JOMA Solar GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of JOMA Solar is the planning, installation, maintenance and optimization of solar systems for private and business customers, with the aim of promoting a sustainable energy future and minimizing energy costs.

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Offering

Products & services

Industry:Solar & Photovoltaics
✓ Offered6
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4.2/5

JOMA Solar GmbH

Solar system for single- and multi-family homes
Solar system for single- and multi-family homes, including individual planning, professional installation, and coordinated integration of consumers such as a wallbox or a heat pump.
Battery storage
Battery storage for private households to store solar electricity, increase self-consumption, gain more independence, and optionally provide backup power.
Solar solutions for commercial
Photovoltaic solutions for commercial and industrial use, using roof areas for electricity generation, reducing electricity costs, and optimizing self-consumption.
Battery storage & self-consumption
Battery storage for commercial applications, for optimizing load management, increasing self-consumption, smoothing peak loads, and optionally using backup power or balancing energy.
Utility-scale systems
Utility-scale photovoltaic systems for companies with large roof areas, including analysis, project planning, installation, as well as monitoring and ongoing support.
Contracting model
Contracting for solar electricity without requiring your own investment, including planning, financing, operation, monitoring, and maintenance of the photovoltaic system.
Trust & reputation

ranQ Trust Score of JOMA Solar GmbH: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 96% · As of October 2026

JOMA Solar GmbH scores 87.5 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.88.724%
  • 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.78.610%
  • 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.95.08%
JOMA Solar GmbH scores 61.5 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.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.55.07%
JOMA Solar 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%
JOMA Solar GmbH scores 17.1 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 35.17.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

JOMA Solar 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 21 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 21 reviews across all connected sources

Sources
GGoogle521
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Comparisons

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Location

Tägerhardstrasse 90
5430 Wettingen
Opening hours
Mon
08:00 - 12:00, 13:00 - 17:00
Tue
08:00 - 12:00, 13:00 - 17:00
Wed
08:00 - 12:00, 13:00 - 17:00
Thu
08:00 - 12:00, 13:00 - 17:00
Fri
08:00 - 12:00, 13:00 - 16:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-334.571.911
Founded
2023 · 3 years
Last commercial register change
February 13, 2025
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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