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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringHünenbergWiederkehr Engineering GmbH
Wiederkehr Engineering GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Wiederkehr Engineering GmbH is the development and implementation of projects for waste recovery and disposal, particularly through the use of pyrolysis, hydrogen treatment, sewage sludge utilization and CO2 capture from the air, with the goal of converting waste into valuable resources for the environment and humans.

AI-generated
Offering

Products & services

Industry:Technical Consulting & Engineering
✓ Offered6
Engineering consulting for waste valorisation
Engineering work and support for projects to convert waste into secondary raw materials and benefits for people and the environment; guidance with experience and know-how in implementation.
Concept design for circular and recycling solutions
Design of projects that close the recycling loop and create something new from waste; focus on 360-degree visions and environment-related concepts.
Development of processes for sewage sludge recovery
Development of systems for using sewage sludge so that new outputs can be created for fertile soil from what is seemingly unusable.
Hydrogen processing for drive systems
Hydrogen processing for environmentally friendly drive systems; using steam from the company’s own pyrolysis process as an additional energy source.
Pyrolysis for waste elimination and power generation
Pyrolysis process for eliminating residual waste after separation into recyclables and residual waste; simultaneous electricity generation from the remaining feedstock.
CO2 removal from the air
Processes for removing CO2 from the air as a contribution to reducing greenhouse gases and limiting global warming.
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4.1/5

Wiederkehr Engineering GmbH

Trust & reputation

ranQ Trust Score of Wiederkehr Engineering GmbH: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

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Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

Wiederkehr Engineering GmbH has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
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CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
Wiederkehr Engineering GmbH scores 83.0 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
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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%
Wiederkehr Engineering GmbH scores 83.3 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).83.322%
Wiederkehr Engineering GmbH scores 7.7 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
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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 35.7.74%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Wiederkehr Engineering GmbH reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 54%, 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.

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Location

Bösch 71
6331 Hünenberg

At a glance

Legal form
Limited Liability Company
UID
CHE-114.333.069
Founded
2008 · 18 years
Last commercial register change
August 27, 2019
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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