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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryEnergy & EnvironmentSolar & PhotovoltaicsQuartinoJ.Clever SA
J.Clever SA Logo
Verified· 3 sourcesTrust Score
Summary

About the company

J.Clever SA is primarily engaged in the planning, installation, and maintenance of photovoltaic systems, as well as consulting and supporting the use of solar energy. The core activities include: * Planning and installation of photovoltaic systems * Maintenance and repair of photovoltaic systems * Consulting and supporting the use of solar energy * Analysis of energy consumption and demand * Installation of battery storage systems * Sale of excess energy to energy suppliers or neighbors * Consulting on the utilization of state and municipal incentives for renewable energies The company offers its customers a comprehensive solution for the use of solar energy, helping them to reduce their energy costs and increase their independence from external energy suppliers.

AI-generated
Offering

Products & services

Industry:Solar & Photovoltaics
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4.2/5

J.Clever SA

✓ Offered8
Turnkey photovoltaic systems
Photovoltaic systems for homes, businesses and other properties, including design, administrative processing, incentives, complete installation and customer training.
Energy storage systems and intelligent energy management
Storage batteries, intelligent load management, continuous monitoring and an app to control production and consumption and optimize self-consumption.
Energy consulting and analysis
Professional consulting, analysis of energy requirements and customised simulations to estimate system sizing, efficiency, production and savings.
Maintenance and support for photovoltaic systems
Ongoing maintenance, panel cleaning, visual inspections, performance monitoring and rapid assistance in case of faults or damage.
EV charging stations
11 kW charging stations for homes and businesses, integrated with the energy produced by the photovoltaic system and with consumption management.
Handling subsidies and permits
Processing of administrative applications for incentives, approvals and permits, with contact to authorities, electricity companies and the fire brigade.
Photovoltaic systems for private homes
Systems for homes with flat or pitched roofs, integrated systems, facades, residential batteries and solutions for domestic energy self-sufficiency.
Photovoltaic systems for businesses
Systems for offices, production sites, commercial areas and parking lots, with industrial storage, fleet charging and optimization of business energy consumption.
Trust & reputation

ranQ Trust Score of J.Clever SA: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 96% · As of October 2026

J.Clever SA scores 84.9 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.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.70.08%
J.Clever SA scores 71.3 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.58.012%
  • 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%
J.Clever SA scores 85.0 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).85.022%
J.Clever SA scores 22.9 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 35.22.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

J.Clever SA 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.

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Location

Via Luserte Sud 8
6572 Quartino
Opening hours
Mon
08:00 - 17:00
Tue
08:00 - 17:00
Wed
08:00 - 17:00
Thu
08:00 - 17:00
Fri
08:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-265.263.474
Founded
2022 · 4 years
Last commercial register change
November 30, 2022
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.
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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