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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,952 companies indexed · Last updated: today
DirectoryEnergy & EnvironmentEnergy producerDöttingenREFUNA AG
REFUNA AG Logo
Verified· 4 sourcesTrust Score
Summary

About the company

REFUNA AG supplies households and businesses in the lower Aare Valley with district heating and the infrastructure required to distribute it. Heat is produced centrally and delivered through a pipe network, using waste heat from the Beznau nuclear power plant and wood energy as sources.

AI-generated
Offering

Products & services

Industry:Energy producer
✓ Offered6
District heating
District heating supply for households and businesses in the lower Aare valley; heat from waste heat of the Beznau nuclear power plant and from the wood heating plant, distributed via a 145 km network.
District heating connection
District heating connections for buildings within the service area; on-site inspection, non-binding cost estimate, pipework construction and installation of the heat transfer station.
Heat transfer station
Heat transfer station (WÜST) with shut-off fittings, flow limiting valve and heat meter; transfer of district heating to the building station for space heating, domestic hot water and, if needed, ventilation.
District heating tariffs
Tariffs for one-time connection costs and annual heating costs; annual basic charge and heating price, plus separate prices for REFUNA Holz and REFUNA Standard.
Subsidy for district heating connection
Funding for district heating connections when replacing oil, gas or electric heating systems; cantonal contributions depending on connection capacity and a grant calculator.
On-call service
On-call service for faults and emergencies in the district heating networks; on-call phone numbers of the independent local network municipalities and a central 24-hour on-call service for other municipalities.
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4.1/5

REFUNA AG

Trust & reputation

ranQ Trust Score of REFUNA AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 100% · As of November 2026

REFUNA AG scores 56.5 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.68.224%
  • 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.17.610%
  • 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.70.08%
REFUNA AG scores 92.3 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.82.07%
REFUNA AG scores 85.0 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).85.022%
REFUNA AG scores 58.8 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: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.63.34%
Qualifications+0.00

REFUNA AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 1 customer reviews. As of November 2026.

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

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 1 reviews across all connected sources

Sources
GGoogle51
★TrustpilotSoon
PProvenExpertSoon

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

Press

Media

February 19, 2026Media
Baut die Refuna doch kein Holzheizwerk für die Wärmeversorgung nach AKW-Ende?
aargauerzeitung.ch
April 25, 2023Media
Meilenstein für Holzheizwerk Döttingen: Grosser Rat gibt grünes Licht
aargauerzeitung.ch
July 13, 2022Media
Aargau sieht bisher kein Hindernis für neues Holzheizwerk in Döttingen
baublatt.ch
August 28, 2020Media
Trotz mildem Winter: Refuna schreibt 3,45 Millionen Franken Gewinn – Wärmepreis bleibt unverändert
aargauerzeitung.ch
May 1, 2019Media
Zukunft der Fernwärme - Holz soll Atom ablösen im unteren Aaretal
srf.ch

Knowledge

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Location

Beznau
5312 Döttingen
Opening hours
Mon
08:00 - 12:00, 13:00 - 16:00
Tue
08:00 - 12:00, 13:00 - 16:00
Wed
08:00 - 12:00, 13:00 - 16:00
Thu
08:00 - 12:00, 13:00 - 16:00
Fri
08:00 - 12:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-101.467.789
Founded
1983 · 43 years
Last commercial register change
November 5, 2026
Employees
21 to 50
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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