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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryEnergy & EnvironmentEnergy SuppliersBuchs AgEniwa AG
Eniwa AG Logo
Verified· 4 sourcesTrust Score
Summary

About the company

The company's core activity encompasses energy production and supply, particularly in the areas of electricity, natural gas/biogas, district heating/district cooling and water networks. In addition, the company offers services in the fields of telecommunications, mobility, building technology, infrastructure development and energy-related waste recycling.

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Offering

Products & services

Industry:Energy Suppliers
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Eniwa AG

✓ Offered11
Electricity
Green electricity and renewable energy, operation and maintenance of electricity grids in 20 municipalities, feed-in of solar power, smart meters and electricity labeling.
Gas
Supply of biogas and natural gas for heating and hot water, operation of a biogas and natural gas grid in 23 municipalities, biogas blending and gas labeling.
Heating and cooling supply
Planning, construction and operation of local heating and cooling networks in Aarau, Buchs and Unterentfelden and Oberentfelden, including connection, certification and price schedules.
Drinking water supply
Supply of drinking water from regional groundwater, operation of the pipeline network, reservoirs, pumping stations and service connections, water quality, prices and well supply.
Grid connection and reporting
New connections, replacement and temporary grid connections for electricity, gas, water, heating, cooling and fibre optics, installation notifications, shutdowns and connection requests.
Grid services
Substations, transformers, gas services, water services, surveying and geoinformatics, plan information as well as consulting, engineering, construction and maintenance.
Solar systems
Planning, construction, installation, maintenance and cleaning of photovoltaic systems, PV contracting, self-consumption optimisation, feed-in remuneration and balcony power systems.
E-mobility
Charging solutions for home, multi-family houses and workplaces, including planning, basic installation, mounting, charging management, billing, maintenance and an emergency hotline.
Building automation
Smart-home and building automation solutions with consulting, installation and maintenance, including Livina, KNX, Loxone, Visu Server as well as HVACSE, room and management systems.
Residential energy consulting
Heating system replacement, initial advice, GEAK and GEAK Plus, energy performance certificate, building thermography, funding advice and energy-saving tips for homeowners.
Business energy consulting
PEIK consulting for SMEs, large energy consumer consulting, target agreements, efficiency measures, implementation support and charging at the workplace.
Trust & reputation

ranQ Trust Score of Eniwa AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 100% · As of October 2026

Eniwa AG scores 47.2 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.63.624%
  • 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.35.08%
Eniwa AG scores 95.8 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.96.07%
Eniwa AG scores 86.7 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).86.722%
Eniwa AG scores 90.0 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 35.100.04%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.80.04%
Qualifications+0.00

Eniwa AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 4.0 out of 5 stars from 1 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
of 5

Aggregated from 1 reviews across all connected sources

Sources
GGoogle41
★TrustpilotSoon
PProvenExpertSoon

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

Press

Media

May 22, 2026Media
Eniwa: Abschiede, neue Gesichter – und ein Update zum blockierten Kraftwerk
aargauerzeitung.ch
April 28, 2026Media
Eniwa steigert 2025 Gewinn - trotz weniger Umsatz
nau.ch
April 24, 2026Media
Die Eniwa spart sich fit und ärgert sich über die Blockade eines Projekts an der Aare
aargauerzeitung.ch
March 27, 2026Media
Rolf Schröter wird neuer CEO der Eniwa: Diese Herausforderungen warten auf ihn
aargauerzeitung.ch
February 24, 2026Media
Der Einwohnerrat will der Eniwa AG keine grossen Batteriespeicher verordnen
aargauerzeitung.ch
February 23, 2026Media
Initiative steht: Die Eniwa-Frage kommt vors Volk
aargauerzeitung.ch
December 14, 2025Media
Sollte Eniwa in grosse Stromspeicher-Anlagen investieren?
aargauerzeitung.ch

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Location

Industriestrasse 25
5033 Buchs Ag
Opening hours
Mon
07:30 - 12:00, 13:00 - 17:00
Tue
07:30 - 12:00, 13:00 - 17:00
Wed
07:30 - 12:00, 13:00 - 17:00
Thu
07:30 - 12:00, 13:00 - 17:00
Fri
07:30 - 12:00, 13:00 - 16:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-105.522.039
Founded
2000 · 26 years
Last commercial register change
November 18, 2025
Employees
101 to 500
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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