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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,110 companies indexed · Last updated: today
DirectoryEnergy & EnvironmentEnergy SuppliersBuchs AgEniwa AG
Eniwa AG Logo
Verified· 4 sources

Eniwa AG

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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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.
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

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