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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringZurichGruner Stucky SA
Gruner Stucky SA Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Gruner Stucky SA is a branch of the Gruner group focused on the energy sector. Its Paris office serves as a recruitment hub for engineers working in energy production, transmission and distribution.

AI-generated
Offering

Products & services

Industry:Technical Consulting & Engineering
✓ Offered9
Hydropower and dams
Hydropower plants and dams, planning, construction, refurbishment and upgrading; including safety solutions, project development and specialist design for facilities in the energy market.
Power transmission
Power transmission, planning and advisory services for high-voltage lines, high-voltage switchgear and Smart Grids; supplemented by line construction and overhead-line-related engineering services.
Solar power plants
Solar power plants, planning of photovoltaic systems and associated energy-technical solutions; including alpine and floating photovoltaic systems.
Geothermal energy
Geothermal energy, planning and technical advisory services for geothermal energy systems as part of the energy market.
Fire protection
Fire protection planning and technical fire protection solutions; complemented by fire-protection procedures, fire scenario control and safety concepts.
Overall planning
Overall planning for building projects, coordinated planning across multiple specialist disciplines and project phases.
Structural design
Structural design and structural engineering for building projects, with references from new builds, refurbishment and demanding structures.
Infrastructure
Infrastructure construction and technical planning for urban and municipal infrastructure projects, including traffic and access development facilities.
Environment
Environmental construction supervision and environmental planning for construction and infrastructure projects, including ecological monitoring and remediation concepts.
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4.2/5

Gruner Stucky SA

Trust & reputation

ranQ Trust Score of Gruner Stucky SA: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 96% · As of October 2026

Gruner Stucky SA scores 65.5 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.60.924%
  • 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.52.910%
  • 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%
Gruner Stucky SA scores 86.2 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.89.612%
  • 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.96.07%
Gruner Stucky 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%
Gruner Stucky SA scores 100.0 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 35.100.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Gruner Stucky SA reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.1 out of 5 stars from 7 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
4.1
of 5

Aggregated from 7 reviews across all connected sources

Sources
GGoogle4.17
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Comparisons

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Location

Thurgauerstrasse 80
8050 Zurich
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
Branch
UID
CHE-460.717.670
Founded
2015 · 11 years
Last commercial register change
June 22, 2023
Employees
101 to 500
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.
76.0
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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