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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint744,089 companies indexed · Last updated: today
DirectoryEnergy Suppliers

Energy Suppliers

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IndustryEnergy & EnvironmentIndustryEnergy Suppliers
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1'141 companies found

Gemeindewerke Pfäffikon ZH Logo

Gemeindewerke Pfäffikon ZH 

Pfäffikon Zh · Since 2010

The company is a municipal service provider specializing in the provision of public services. The core activities include: waste management (collection of recyclables, waste and bulky waste, green waste collection), wastewater management (operation and maintenance of sewage treatment plants), natural gas supply (supply of natural gas and biogas, installation and maintenance of gas systems), electricity supply (supply of renewable energy, rental of temporary electrical installations, installation and maintenance of photovoltaic systems), and heat supply (supply of heat). The company thus offers a wide range of services in the field of public utilities and waste management.

Energy Suppliers
View profile4.3(6)
Martin Zeller AG, Elektrizitätswerk Logo

Martin Zeller AG, Elektrizitätswerk 

Flums · Since 1979

The company's core activity is electricity supply.

Energy Suppliers
View profile4.8(6)
AZIENDA ELETTRICA DI MASSAGNO (AEM) SA Logo

AZIENDA ELETTRICA DI MASSAGNO (AEM) SA 

Massagno · Since 2001

AZIENDA ELETTRICA DI MASSAGNO (AEM) SA is an electricity utility providing power supply, grid operation and customer services for residential and commercial clients. The company publishes tariffs and regulatory information, handles fault reporting and offers digital services including a customer portal and a mobile app.

Energy Suppliers
View profile3.4(5)
HPS Energietechnik GmbH Logo

HPS Energietechnik GmbH 

Zielebach · Since 2008

The core activity of HPS Energietechnik GmbH is the planning, installation, maintenance and repair of building technology systems, in particular: heating systems, air conditioning systems, solar systems, photovoltaic systems, power storage systems, and refrigeration and air conditioning technology. The company also offers services such as system cleaning and modernization of sanitary facilities.

Energy SuppliersSolar & Photovoltaics
View profile4.4(5)
ERISEL SA Logo

ERISEL SA 

Bellinzona · Since 1983

ERISEL SA is an engineering firm for building envelopes and building services. It provides engineering and consultancy across disciplines related to building systems and the building envelope, developing multidisciplinary, coordinated solutions for construction projects.

Energy Suppliers
View profile3(4)
Insolight SA Logo

Insolight SA 

Renens Vd · Since 2015

The company Insolight develops and markets a dynamic agrivoltaic solution called "insolagrin", which enables farmers to generate solar energy while protecting their crops. The solution combines solar energy and agriculture on the same area and aims to support farmers in their fight against climate change.

Energy Suppliers
View profile5(4)
Licht- und Wasserwerk AG Kandersteg Logo

Licht- und Wasserwerk AG Kandersteg 

Kandersteg · Since 1903

The core activity of Licht- und Wasserwerk Kandersteg AG is the production and supply of electrical energy, drinking water, utility water, and fire-fighting water, as well as natural heat for the mountain village of Kandersteg in the Bernese Oberland.

Energy Suppliers
View profile4.7(3)
Wasser- und Elektrizitätswerk Steinhausen AG Logo

Wasser- und Elektrizitätswerk Steinhausen AG 

Steinhausen · Since 2023

The core activity of the company "Wasser- und Elektrizitätswerk Steinhausen AG" is the supply of the municipality of Steinhausen with electricity and water. The company is responsible for the electricity and water supply, including the maintenance and upkeep of the corresponding infrastructure.

Energy Suppliers
View profile5(3)
Biomassa Blenio SA Logo

Biomassa Blenio SA 

Olivone · Since 2011

The core activity of the company is the management and administration of the municipality of Blenio, including the provision of services to citizens, support for local businesses and organizations, the promotion of tourism and the management of municipal property.

Energy SuppliersSolar & PhotovoltaicsSustainability Sector
View profile4.5(2)
GETEC PARK.SWISS AG Logo

GETEC PARK.SWISS AG 

Muttenz · Since 2013

GETEC PARK.SWISS AG provides industrial-park services and energy solutions, including energy generation (waste-to-energy), wastewater pretreatment and treatment, solvent regeneration, site logistics, HSEQ, engineering and waste management. The company also supplies utilities and energy products such as electricity, gas, steam, hot/warm water and compressed air.

Energy Suppliers
View profile3(2)
Technische Betriebe Flawil (TBF) Logo

Technische Betriebe Flawil (TBF) 

Flawil · Since 2016

The core activity of the company "Technische Betriebe Flawil" is to supply the municipality of Flawil with various services and products, in particular: electricity supply, water supply, gas supply, district heating supply, and fiber-optic and telecommunications services (FTTH). The company also offers additional services such as energy consulting, project management and implementation in the field of energy economics, as well as technical services such as electrical engineering and implementation.

Energy Suppliers
View profile3(2)
AG Elektrizitätswerk Maienfeld Logo

AG Elektrizitätswerk Maienfeld 

Maienfeld · Since 1941

Energy Suppliers
View profile5(1)
Holzwärme Grindelwald AG Logo

Holzwärme Grindelwald AG 

Grindelwald · Since 2008

Energy Suppliers
View profile3(1)
Nahwärmeverbund Wolfwil Logo

Nahwärmeverbund Wolfwil 

Wolfwil · Since 2011

Energy Suppliers
View profile5(1)
3E - Genossenschaft Erneuerbare Energien Eglisau Logo

3E - Genossenschaft Erneuerbare Energien Eglisau 

Eglisau · Since 2012

3E - Genossenschaft Erneuerbare Energien Eglisau implements and operates community solar installations, produces electricity with the '3E‑Lilo' photovoltaic system, and offers customers the possibility to purchase that solar power under fixed-amount or consumption-based schemes.

Energy SuppliersSolar & Photovoltaics
View profile
Aare Energie AG (a.en) Logo

Aare Energie AG (a.en) 

Olten · Since 2002

Aare Energie AG (a.en) is a regional energy utility supplying electricity, gas, heat and water. The company manages the operational activities of the municipal utility Städtische Betriebe Olten (sbo) and provides network operation, production and storage services as well as mobility, energy-efficiency and photovoltaic solutions.

Energy Suppliers
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Aare-Tessin AG für Elektrizität (Atel) Logo

Aare-Tessin AG für Elektrizität (Atel) 

Olten · Since 2009

Aare-Tessin AG für Elektrizität (Atel) is an energy utility that supplies electricity, gas, heat and water and operates distribution network services. It also provides energy production and storage services (including photovoltaic systems), metering and connection services, energy advice, mobility solutions and services for third parties.

Energy Suppliers
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Aare Versorgungs AG (AVAG) Logo

Aare Versorgungs AG (AVAG) 

Olten · Since 1999

Aare Versorgungs AG (AVAG) is a regional energy supplier providing services in electricity, gas, heat and water. The company carries out operational management of a municipal utility and offers services to third parties, including network operation, energy production (including photovoltaic systems), billing, energy advisory and mobility solutions such as charging infrastructure and refuelling stations.

Energy Suppliers
View profile
AarPower AG Logo

AarPower AG 

Brugg Ag · Since 2022

The core activity of AarPower includes the installation and distribution of renewable energy sources, particularly photovoltaic systems, as well as the construction of charging stations for electric vehicles. Additionally, the company offers consulting services in the field of energy supply and management.

Energy SuppliersSolar & Photovoltaics
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Adelheiz AG Logo

Adelheiz AG 

Adelboden · Since 2005

Energy Suppliers
View profile
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Frequently asked questions

Searching the directory

How the search works, what each filter means, and how the results come together.

What can I search for in the directory?
The search field matches company names, industries and places. Beyond that you can filter by Industry (18 categories based on the NOGA classification), Size (number of employees), Region (canton, language region or postal code) and Special (keywords and entry date). Filters combine freely; the active ones appear as chips below the filter bar and can be removed there individually.
How do keywords work?
Keywords search the description and stated purpose of each company — the text that goes beyond the company name. Multiple keywords are combined with OR: every additional keyword widens the set of matches rather than narrowing it.
What belongs in the postal code field?
A single postal code (e.g. 8000) or a range (e.g. 1000-1010). The field accepts postal codes only — for place names, use Canton or Language region.
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How is organisation size determined?
Size reflects the number of employees and is calculated from publicly available information by a model developed in-house. It is a best-possible estimate, not an official figure.
What does the Verified label mean?
Verified means the entry is tied to a UID (Swiss business identification number) and therefore links back to the official Swiss business register. The label speaks to the company's identity — it is not a rating of its performance.

Source: Federal Statistical Office, UID register

How do I sort the results?
Use the dropdown above the list: Relevance, Name (A–Z), Best rating, Most reviews or Longest established. You can also switch between list and map view and set how many results appear per page.
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