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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryEnergy & EnvironmentWaste Management IndustryKägiswilSeiler Energie GmbH
Seiler Energie GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Seiler Energie GmbH is a company that processes organic waste into energy and soil products. It operates composting and biogas facilities and produces green electricity, heat, biochar, compost, and various soil products.

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Products & services

Industry:Waste Management Industry
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4.2/5

Seiler Energie GmbH

5
Energy production
Biogas from slurry, manure, food leftovers and municipal green waste; production of green electricity, heat and district heating, supplemented by photovoltaics.
Disposal of green waste and organic waste
Acceptance of green waste, root stumps and horse manure; free disposal for private individuals at municipal collection points, as well as handling charges for direct deliveries.
Soil products
Sale of compost, garden soil, trough soil, universal soil with sand, gravel soil, biochar products, black soil and bark mulch for self-service or in larger quantities.
Biochar
Production of biochar from tree and shrub trimming chippings; sale for agriculture and horticulture as well as activated products and substrates.
Gastro waste pickup service
Pickup service without contractual commitment for food leftovers, cooking oil, frying oil and grease separator waste from restaurants, commercial kitchens and residential neighbourhoods.
Trust & reputation

ranQ Trust Score of Seiler Energie GmbH: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

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Data basis 96% · As of October 2026

Seiler Energie GmbH scores 80.7 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
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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.82.524%
  • 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.61.010%
  • 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.100.08%
Seiler Energie GmbH scores 77.2 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.86.512%
  • 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%
Seiler Energie GmbH scores 85.0 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).85.022%
Seiler Energie GmbH scores 22.9 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 35.22.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Seiler Energie GmbH reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 5.0 out of 5 stars from 10 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 10 reviews across all connected sources

Sources
GGoogle510
★TrustpilotSoon
PProvenExpertSoon

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

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Comparisons

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Location

Sonnenhof 1
6056 Kägiswil
Opening hours
Mon
07:00 - 12:00, 13:00 - 17:30
Tue
07:00 - 12:00, 13:00 - 17:30
Wed
07:00 - 12:00, 13:00 - 17:30
Thu
07:00 - 12:00, 13:00 - 17:30
Fri
07:00 - 12:00, 13:00 - 17:30
Sat
08:00 - 12:00, 13:00 - 16:00
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-226.223.040
Founded
2016 · 10 years
Last commercial register change
December 23, 2016
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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