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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryEnergy & EnvironmentEnergy SuppliersFrauenfeldBioenergie Frauenfeld AG
Bioenergie Frauenfeld AG Logo
Verified· 4 sourcesTrust Score
Summary

About the company

Bioenergie Frauenfeld AG operates a wood-fired power plant that converts regional residual wood via pyrolysis into biochar, heat and electricity. The facility feeds the produced renewable electricity into the grid, supplies waste heat to the Schweizer Zucker factory and the Thurplus district heating network, and markets the produced biochar for agricultural and horticultural uses.

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4.1/5

Bioenergie Frauenfeld AG

4
Generation of green electricity
Generation of renewable electricity from regional biomass in the wood-fired combined heat and power plant; the produced green electricity is fed into the power grid.
Provision of district heat
Provision of renewable heat from the wood-fired combined heat and power plant for the Zuckerfabrik Schweizer Zucker and the Wärmeverbund Thurplus.
Production of charcoal / biochar
Production of charcoal from residual wood using pyrolysis; the charcoal is used as a raw material as well as a storage, buffer and climate substance.
CO2 sinks through biochar
Creation of permanent CO2 sinks through the carbon bound in the biochar; use of charcoal as a contribution to climate protection.
Trust & reputation

ranQ Trust Score of Bioenergie Frauenfeld AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

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Data basis 100% · As of October 2026

Bioenergie Frauenfeld AG scores 69.8 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.62.424%
  • 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.63.210%
  • 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%
Bioenergie Frauenfeld AG scores 74.1 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.64.612%
  • 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%
Bioenergie Frauenfeld AG scores 86.7 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).86.722%
Bioenergie Frauenfeld AG scores 77.7 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 35.88.64%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.66.74%
Qualifications+0.00

Bioenergie Frauenfeld AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 4.2 out of 5 stars from 11 customer reviews. As of October 2026.

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

Reviews

Aggregated rating

Aggregated rating
4.2
of 5

Aggregated from 11 reviews across all connected sources

Sources
GGoogle4.211
★TrustpilotSoon
PProvenExpertSoon

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

Press

Media

July 23, 2026Media
Bioenergie Frauenfeld AG räumt Verantwortung für Fischsterben im Tegelbach ein
thurgauerzeitung.ch
June 30, 2026Media
Rund um die Zuckerfabrik stehen weisse Säcke voll mit Holzkohle – das passiert damit
thurgauerzeitung.ch
June 11, 2022Media
Hellseherische Fähigkeiten für Quantensprung der Fernwärme: Einweihung Holzheizkraftwerk
thurgauerzeitung.ch
February 21, 2022Media
Holzheizkraftwerk Frauenfeld nimmt Betrieb auf
leaderdigital.ch
July 13, 2021Media
Halbzeit beim Bau des Holzheizkraftwerks in Frauenfeld-West
thurgauerzeitung.ch

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Location

Oberwiesenstrasse 124
8500 Frauenfeld

At a glance

Legal form
Corporation
UID
CHE-186.239.624
Founded
2021 · 5 years
Last commercial register change
March 31, 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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