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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryEnergy & EnvironmentSustainability SectorGrenchenUMWEKO GmbH
UMWEKO GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Umweko is consulting, inspection, training and education in the field of biomass, particularly in the areas of composting, biogas, sewage sludge and wastewater treatment plants, as well as environmental expertise and plant operation.

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Products & services

Industry:Sustainability Sector
✓ Offered5
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4.1/5

UMWEKO GmbH

Advisory, inspections and expert reports on biomass
Advisory, inspections and audits with reports and quantity analyses, as well as expert assessments for municipal, cantonal and federal authorities.
Courses and initial and continuing education
Basic courses for the composting and anaerobic digestion sector, as well as initial and continuing education for different target groups, from university lectures to plant staff.
Composting and anaerobic digestion
Support for the treatment and processing of green waste and biogenic waste in the field of composting and anaerobic digestion, including quality and process aspects.
Biogas
Services relating to biogas and the recovery of biogenic waste, focusing on processing, products and plant operation.
Compost
Services relating to compost and the recovery of green waste and biomass, including treatment, processing and quality issues.
Trust & reputation

ranQ Trust Score of UMWEKO GmbH: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

UMWEKO 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.
x
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%
UMWEKO 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%
UMWEKO GmbH scores 83.3 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).83.322%
UMWEKO GmbH scores 54.3 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 35.54.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

UMWEKO 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

Weinbergstrasse 46
2540 Grenchen

At a glance

Legal form
Limited Liability Company
UID
CHE-112.629.263
Founded
2005 · 21 years
Last commercial register change
December 4, 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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