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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryEnergy & EnvironmentEnergy SuppliersSchönenwerdtrafopower AG
trafopower AG Logo
Verified· 4 sourcesTrust Score
Summary

About the company

The core activity of Trafopower AG encompasses the areas of transformers and network services. Specifically, the company offers the following services: Maintenance and servicing of transformers, including oil analysis, oil regeneration, oil preparation and oil drying; Transportation and disposal of transformers; Network services, including planning, construction and maintenance of transformer stations, distribution cabinets and cable systems; Sales and delivery of transformers, spare parts and accessories; Consulting and service for energy systems and networks. The company positions itself as a specialist for transformers and energy systems and offers its services throughout Switzerland and abroad.

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Offering

Products & services

Industry:Energy Suppliers
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3.8/5

trafopower AG

✓ Offered12
Transformers
Transformers for almost all power and voltage levels, oil-filled or in dry-type design; sales, oil analyses, electrical tests, dismantling/installation, maintenance and oil services.
Grid services
Grid services for substation and grid construction; turnkey solutions for the conversion and new construction of transformer substations including substations, Lahmeyer-Compact stations and cable work.
Products
Products related to transformers and substations; neutral transformers, spare/stock transformers, spare parts, new oil, dry beads and oil troughs, partly in stock or to order.
Oil analyses
Oil analyses for transformers to assess their condition and support maintenance and servicing.
Oil regeneration
Oil regeneration for insulating oil in transformers, carried out with mobile oil systems.
Oil processing
Oil processing for insulating oil in transformers, using mobile systems for oil treatment.
Oil drying
Oil drying for transformers, including drying using a drying column and mobile oil systems.
Low-frequency drying
Low-frequency drying for transformers as a drying method as part of oil and maintenance work.
Maintenance of distribution transformers
Maintenance of distribution transformers with servicing, ongoing maintenance and inspection/overhaul work.
Maintenance of power transformers
Maintenance of power transformers with servicing, ongoing maintenance and inspection/overhaul work.
Transport of transformers
Transport of transformers as part of the full-service package for conversion, expansion and installation as well as handling of equipment.
Disposal of transformers
Disposal of transformers and associated components as part of transformer and service activities.
Trust & reputation

ranQ Trust Score of trafopower AG: 3.8 out of 5.0

Trust Score3.8/ 5.0

High

x

Data basis 100% · As of October 2026

trafopower AG scores 49.0 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.62.524%
  • 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.27.910%
  • 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.35.08%
trafopower AG scores 89.3 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.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.70.07%
trafopower AG scores 86.7 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).86.722%
trafopower AG scores 20.0 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 35.40.04%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.0.04%
Qualifications+0.00

trafopower AG reaches a ranQ Trust Score of 3.8 out of 5.0 — rated «High». The rating draws, among other things, on 4.0 out of 5 stars from 2 customer reviews. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
4
of 5

Aggregated from 2 reviews across all connected sources

Sources
GGoogle42
★TrustpilotSoon
PProvenExpertSoon

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

Press

Media

July 8, 2021Media
Frischer Wind in Schönenwerd: Eltern übergeben ihr Unternehmen an nächste Generation
oltnertagblatt.ch

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Location

Wöschnauerstrasse 38
5012 Schönenwerd
Opening hours
Mon
07:00 - 12:00, 13:15 - 17:00
Tue
07:00 - 12:00, 13:15 - 17:00
Wed
07:00 - 12:00, 13:15 - 17:00
Thu
07:00 - 12:00, 13:15 - 17:00
Fri
07:00 - 12:00, 13:15 - 16:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-111.655.855
Founded
2004 · 22 years
Last commercial register change
June 4, 2026
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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