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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTesting & Inspection CentersAltendorfELKOSI GmbH
ELKOSI GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of ELKOSI GmbH is the holistic and independent planning and control of electrical installations in buildings of all kinds. This includes in particular: electrical planning, electrical inspections, smart home solutions, planning of PV systems, consulting and planning of e-mobility solutions, and special planning in the field of building automation and civil protection. The company offers neutral consulting and planning services and focuses on the needs of its customers.

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Offering

Products & services

Industry:Testing & Inspection Centers
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3.8/5

ELKOSI GmbH

Electrical Planning & Installation
✓ Offered6
Electrical planning
Comprehensive and independent planning of electrical installations for new builds and renovations; tender documents, support during construction phases, planning of distribution boards, lighting, communication cabling, and security and emergency power systems.
Electrical inspections
Independent inspection of electrical installations; final inspections, acceptance inspections, periodic inspections and further tests, including administrative processing and advice for safety evidence.
Smart Home
Planning and installation of Smart Home systems based on KNX; integration of lighting, shading, security, multimedia, heating/ventilation/air conditioning, energy management, smart metering and voice control.
Photovoltaic systems
Neutral and product-independent planning and project development of photovoltaic systems; preliminary studies, profitability calculations, tendering, coordination of execution, and obtaining compensation and approvals.
E-mobility
Advisory and planning services for charging stations for private, semi-public and public use; charging infrastructure, billing systems, load management, support during execution and clarifications with the grid operator.
Special planning
Planning of protective structures for civil protection; shelters in one’s own home, public collective shelters and protection facilities such as command posts, muster facilities and protected first-aid stations.
Trust & reputation

ranQ Trust Score of ELKOSI GmbH: 3.8 out of 5.0

Trust Score3.8/ 5.0

High

x

Data basis 96% · As of October 2026

ELKOSI GmbH scores 49.8 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.68.224%
  • 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.17.610%
  • 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.35.08%
ELKOSI GmbH scores 83.0 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.100.012%
  • 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%
ELKOSI GmbH 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%
ELKOSI GmbH scores 2.9 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 35.2.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

ELKOSI GmbH reaches a ranQ Trust Score of 3.8 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 1 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 1 reviews across all connected sources

Sources
GGoogle51
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Katrinenhof 51
8852 Altendorf
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-114.299.082
Founded
2008 · 18 years
Last commercial register change
June 2, 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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