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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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1'141 companies found

IBW Energie AG Logo

IBW Energie AG 

Wohlen Ag · Since 2001

IBW Energie AG supplies electricity, gas and drinking water and provides related services such as energy consulting, grid connections, heating service and water leak detection.

Energy Suppliers
View profile4.4(7)
Regio Energie Amriswil (REA) Logo

Regio Energie Amriswil (REA) 

Amriswil · Since 2015

The company's core activity is the provision of services in the energy, water, gas and telecommunications sectors, including the supply of electricity, water and gas, the installation and maintenance of charging stations for electric vehicles, the provision of communication services such as internet, telephone and television, as well as consulting and management of energy and water facilities.

Energy Suppliers
View profile2(7)
St. Gallisch-Appenzellische Kraftwerke AG Logo

St. Gallisch-Appenzellische Kraftwerke AG 

St. Gallen · Since 2009

The company's core activity encompasses the sustainable supply and networking of people and businesses with energy and data. This includes the entire value chain, from energy procurement to planning, construction, operation, and maintenance of networks and facilities, as well as financing solutions, sales, and billing. The company's business areas include in particular: electricity generation, electricity and heat supply, operation of a modern fiber optic network, internet and data connections, generation of renewable energy through hydroelectric power plants, wood-fired power plants, photovoltaic systems, and wind farms, as well as hydrogen production. The company thus offers a comprehensive range of services and products in the field of energy and data supply.

Energy SuppliersSolar & Photovoltaics
View profile3.9(7)
SwissFarmerPower Inwil AG Logo

SwissFarmerPower Inwil AG 

Inwil · Since 2006

The core activity of SwissFarmerPower Inwil AG is the production of energy through the processing of biomass, in particular through the generation of biogas, electricity and heat from solid and liquid biomass such as green waste and other organic materials. The company operates a future energy plant in Inwil, which processes up to 20,000 tons of solid biomass and 50,000 tons of liquid biomass per year.

Energy SuppliersWaste Management Industry
View profile4.9(7)
Technische Gemeindebetriebe Bischofszell Logo

Technische Gemeindebetriebe Bischofszell 

Bischofszell · Since 2020

Energy Suppliers
View profile3.7(7)
Wärme Bischofszell-Sittertal AG Logo

Wärme Bischofszell-Sittertal AG 

Bischofszell · Since 2022

Wärme Bischofszell-Sittertal AG develops and operates a district heating system that extracts heat from the wastewater treatment plant using a heat pump and distributes it via a district heating network. The project is implemented in cooperation with Technische Gemeindebetriebe Bischofszell and EKT AG and includes a heating plant with thermal storage and a supplementary gas boiler for peak loads.

Energy Suppliers
View profile3.7(7)
Arbon Energie AG Logo

Arbon Energie AG 

Arbon · Since 2001

The core activity of Arbon Energie encompasses the supply of electricity, water, district heating, and telecommunications. Specifically, the company offers: * Electricity supply through the operation of its own distribution network and cooperation with the electricity producer SN Energie AG * Water supply through its own lake water treatment plant for Lake Constance drinking water * District heating supply through its own heat network * Telecommunications services through its own fibre-optic network, including internet, telephony, mobile and television services The company is thus a regional utility provider offering a wide range of energy and communication services.

Energy Suppliers
View profile3(6)
Bioenergie Frauenfeld AG Logo

Bioenergie Frauenfeld AG 

Frauenfeld · Since 2021

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.

Energy Suppliers
View profile4.2(6)
Biolüssi Wärmeverbund GmbH Logo

Biolüssi Wärmeverbund GmbH 

Turbenthal · Since 2010

Biolüssi Wärmeverbund GmbH operates a local district heating network powered by a wood‑chip heating plant, supplying heat for space heating and domestic hot water via buried distribution pipelines and building heat‑exchange stations. The website documents the plant’s boilers and storage system and provides information on on‑site green‑waste processing and compost availability.

Energy Suppliers
View profile5(6)
Biopower Nordwestschweiz AG Logo

Biopower Nordwestschweiz AG 

Liestal · Since 2005

The core activity of Biopower Nordwestschweiz AG is the collection, processing and utilization of organic waste for energy production. The company offers services such as consulting, planning and concepts for the separate collection of organic waste and operates its own biopower plants in Pratteln, Ormalingen and Liesberg.

Energy SuppliersWaste Management Industry
View profile4.8(6)
Elektrizitätswerk Heiden AG Logo

Elektrizitätswerk Heiden AG 

Heiden

Elektrizitätswerk Heiden AG is an electricity utility and electrical services company. It supplies electricity, operates and maintains distribution networks, and provides installations and services for photovoltaics, telematics, fiber-optic connectivity, testing and maintenance, as well as an online shop.

Energy Suppliers
View profile4.8(6)
Energie Münchenbuchsee AG Logo

Energie Münchenbuchsee AG 

Münchenbuchsee · Since 2015

The company's core activity is the supply of electricity, water and heat to the municipality of Münchenbuchsee. This also includes public lighting and energy consulting. The company also offers services such as street lighting, e-mobility and ZEV/vZEV.

Energy Suppliers
View profile2.3(6)
Enertì SA Logo

Enertì SA 

Rivera · Since 2000

The core activity of Enerti SA consists of collaboration between the nine main companies responsible for electricity distribution in the canton of Ticino, in order to offer innovative and optimized services to customers by leveraging synergies.

Administrative ServicesEnergy Suppliers
View profile3.7(6)
Ingenieurteam IFE AG Logo

Ingenieurteam IFE AG 

Rebstein · Since 1984

The core activity of Ingenieurteam AG encompasses the provision of services in the following areas: * Contaminant diagnostics and consulting * Utility company consulting (Energieversorgungsunternehmen) * General contracting * Photovoltaics * WIS/GIS (Factory Information Systems/Geographic Information Systems) * Thermography * Equipment and vehicle fleet management The company also offers project management and consulting in the areas of distribution networks, communication networks, electrical distribution networks, and approval procedures. Thus, the company's core activity lies in the field of technical consulting and services for the energy and supply industry.

Energy SuppliersSolar & Photovoltaics
View profile5(6)
Juvent SA Logo

Juvent SA 

St-Imier · Since 1993

The core activity of Juvent SA is the operation of the largest wind farm in Switzerland, located on Mont-Crosin and Mont-Soleil in the Bernese Jura, which comprises a total of 16 wind turbines of different types.

Energy Suppliers
View profile4.8(6)
Kraftwerk Göschenen AG Logo

Kraftwerk Göschenen AG 

Göschenen · Since 1955

Kraftwerk Göschenen AG operates a hydroelectric power plant that uses water from the Reuss (Göscheneralp, Voralp and the Urserental) to generate electricity. The produced energy is allocated 55% to Schweizerische Bundesbahn AG (SBB) and 45% to Zentralschweizerische Kraftwerke AG (CKW), with CKW entrusted with plant operations.

Energy Suppliers
View profile5(6)
Regionalwerke AG Baden Logo

Regionalwerke AG Baden 

Baden · Since 1999

Regionalwerke AG Baden supplies private and commercial customers with energy and potable water and operates the associated networks and facilities. The company offers electricity, gas, heat/cooling and solar products as well as services including contracting, energy consulting, maintenance, smart meters and e‑mobility solutions.

Energy Suppliers
View profile4(6)
Säntis Energie AG Logo

Säntis Energie AG 

Wattwil

The core activity of Säntis Energie AG is energy supply, particularly in the gas sector, including delivery, trading and consulting for heat and energy solutions, as well as the operation and maintenance of energy distribution networks.

Energy Suppliers
View profile4.8(6)
TB Gränichen Energie AG Logo

TB Gränichen Energie AG 

Gränichen · Since 2011

TB Gränichen Energie AG supplies electrical energy and operates the distribution network. Its responsibilities include purchasing and distributing electricity, operating and maintaining substations and distribution cabinets, new connections and meter management, billing, street-light maintenance, energy advisory services and emergency response.

Energy Suppliers
View profile3.7(6)
Thurwerke AG Logo

Thurwerke AG 

Wattwil · Since 2001

The core activity of Thurwerke AG is the supply of the region with electricity, water, heat and communication services (in particular via a fibre-optic network).

Energy Suppliers
View profile4.8(6)
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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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