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

About the company

Esfera GmbH provides services for photovoltaic systems, including consultation and planning, project coordination and subsidy handling, installation and commissioning, and maintenance, with complementary products such as battery storage, monitoring and EV charging stations.

AI-generated
Offering

Products & services

Industry:Solar & Photovoltaics
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4.3/5

Esfera GmbH

✓ Offered
10
Photovoltaic solutions
Tailor-made photovoltaic systems for private clients, owners' communities, commercial businesses, agriculture and contracting partners, including rooftop, in-roof, facade, balcony and off-grid systems.
Consulting & planning
Free initial consultation, non-binding preliminary offer, roof survey with drone images, project dossier with cost and profitability calculation.
Installation & commissioning
Delivery of the solar modules, DC installation, AC installation with electrical partners, commissioning, test run, handover with system dossier and monitoring app.
Coordination & funding
Project coordination, administration of funding, project management and invoicing for photovoltaic projects and communities for self-consumption.
Maintenance & support
Regular inspections, remote monitoring, documentation, software updates and maintenance packages Basic, Standard and Premium.
Modernisation
Modernisation and expansion of existing photovoltaic systems, to adapt systems to new requirements and develop them further.
Energy storage
Energy storage for storing excess energy for evening, night and bad-weather periods.
Emergency power
Emergency power package with automatic switching and load management, so systems continue to be supplied during grid disruptions.
Monitoring
Remote monitoring of system data, integration into smart home systems and ongoing monitoring of production.
EV charging station
Wallbox integration into the energy concept, charging electric cars with their own solar power.
Trust & reputation

ranQ Trust Score of Esfera GmbH: 4.3 out of 5.0

Trust Score4.3/ 5.0

Very high

x

Data basis 96% · As of October 2026

Esfera GmbH scores 86.5 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.83.124%
  • 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.100.08%
Esfera 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%
Esfera 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%
Esfera GmbH scores 51.4 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 35.51.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Esfera GmbH reaches a ranQ Trust Score of 4.3 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.8 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
4.8
of 5

Aggregated from 26 reviews across all connected sources

Sources
GGoogle4.826
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Altelsweg 9
3661 Uetendorf
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 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-235.524.612
Founded
2023 · 3 years
Last commercial register change
April 3, 2024
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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