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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint744,173 companies indexed · Last updated: today
DirectoryEnergy Suppliers

Energy Suppliers

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1'141 companies found

Wärmeverbund Oberdorf Kirchberg GmbH Logo

Wärmeverbund Oberdorf Kirchberg GmbH 

Kirchberg Be · Since 2022

The core activity of Wärmeverbund Oberdorf Kirchberg is to supply households and properties with sustainable heat energy, particularly through the use of renewable energy sources such as wood chips, biogas and solar thermal energy, via a district heating network.

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Wärmeverbund Oberwil AG Logo

Wärmeverbund Oberwil AG 

Oberwil B. Büren · Since 2019

The core activity of Wärmeverbund Oberwil AG is the production of heat from wood chips and the supply of this heat energy through a district heating network to various houses and buildings in the village of Oberwil.

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Wärmeverbund obere Rüti GmbH Logo

Wärmeverbund obere Rüti GmbH 

Rothenthurm · Since 2013

Wärmeverbund obere Rüti GmbH uses residual wood from Pius Schuler AG and, as a non-profit operating company, operates a heating plant and a district heating network. It supplies connected customers with heat energy from renewable, CO2‑neutral wood and has taken over, modernized and expanded the former network.

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Wärmeverbund Rifferswil AG Logo

Wärmeverbund Rifferswil AG 

Rifferswil · Since 2014

The core activity of Wärmeverbund Rifferswil AG is the generation and distribution of district heating using wood chip heating systems. The company operates a heat plant with several chip-fired boilers, supplying various buildings and apartments in Rifferswil with CO2-neutral heat energy.

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Wärmeverbund Sachseln AG Logo

Wärmeverbund Sachseln AG 

Flüeli-Ranft · Since 2022

The core activity of Wärmeverbund Sachseln AG is the generation and distribution of heat energy through the operation of heating plants, which are fueled with wood chips from local forests, to supply households and buildings in the municipality of Sachseln with environmentally friendly energy.

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Wärmeverbund Seetalplatz AG Logo

Wärmeverbund Seetalplatz AG 

Emmenbrücke · Since 2018

The core activity of Wärmeverbund Seetalplatz AG is the generation and distribution of sustainable energy in the form of heat and cold to industry, residential buildings and commercial properties in the Viscosistadt and surrounding areas. The energy is produced from groundwater, industrial waste heat and solar power and distributed centrally, replacing fossil fuels and reducing CO2 emissions.

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Wärmeverbund Rüthi AG Logo

Wärmeverbund Rüthi AG 

Rüthi (Rheintal) · Since 2013

The company's core activity is the management and exploitation of municipal assets, in particular alpine and forest areas, as well as the provision of services in the fields of forestry and the rental of parking spaces and real estate.

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Wärmeverbund Schnottwil AG Logo

Wärmeverbund Schnottwil AG 

Schnottwil · Since 2014

Wärmeverbund Schnottwil AG operates a district heating network supplied by a wood-chip boiler (900 kW). The network provides heat to private households, the local school building, a fire brigade/municipal workshop and several commercial properties, and the company offers information on connection agreements, costs and available subsidies.

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Wärmeverbund Schüpfheim AG Logo

Wärmeverbund Schüpfheim AG 

Schüpfheim · Since 2024

Wärmeverbund Schüpfheim AG operates a district heating network that supplies heat and electricity from a wood-fired heat and power plant and several combined heat and power units. The network uses regional wood chips and can be supplemented by a hybrid oil boiler to ensure supply reliability. The project’s stakeholders include the municipality of Schüpfheim, the Waldgenossenschaft oberes Entlebuch and CKW AG.

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Wärmeverbund Sonnenrain GmbH Logo

Wärmeverbund Sonnenrain GmbH 

Bolligen · Since 2016

Wärmeverbund Sonnenrain GmbH specialises in the construction and operation of energy supply systems and distribution networks. Using insulated hot-water pipelines, the company delivers heat for space heating and domestic hot-water preparation to buildings and also plans, finances, builds and operates photovoltaic systems to generate renewable energy.

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Wärmeverbund Sursee AG Logo

Wärmeverbund Sursee AG 

Sursee · Since 2020

The core activity of Wärmeverbund Sursee AG is the creation and operation of heat and cold networks in the Sursee area, with the goal of enabling a sustainable and largely CO2-neutral heat and cold supply.

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Wärmeverbund Sutz-Lattrigen AG Logo

Wärmeverbund Sutz-Lattrigen AG 

Sutz · Since 2021

The core activity of the company 'Burgergemeinde Sutz-Lattrigen' is the provision of district heating through the operation of a heat network, which is fueled by wood from its own Burgerwald forest. This heat network supplies various properties, including single-family and multi-family homes, community houses, campsites, and the church of the municipality of Sutz, with environmentally friendly thermal energy.

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Wärmeverbund Walkringen AG Logo

Wärmeverbund Walkringen AG 

Walkringen · Since 2019

The company's core activity is the generation and distribution of district heating as well as the operation of a heat network.

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Wärmeverbund Zollbrück AG Logo

Wärmeverbund Zollbrück AG 

Zollbrück · Since 2020

Wärmeverbund Zollbrück AG is responsible for the district heating network and coordinates heat supply for multiple buildings. The system uses a central wood‑chip heating plant that is built and operated by the company De Ligno.

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Wärmeverbund Willisau AG Logo

Wärmeverbund Willisau AG 

Willisau · Since 1997

The core activity of Wärmeverbund Willisau AG is the generation and distribution of environmentally friendly heat energy through the use of wood as an energy carrier. The company operates a heating plant and a pipeline network to supply heat to public and private buildings in Willisau.

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Wärmeverbund Zollikofen AG Logo

Wärmeverbund Zollikofen AG 

Zollikofen · Since 2021

The core activity of the company is municipal administration and services, including location promotion, business consulting, real estate and building land management, education, culture, security, environment and infrastructure. This is the official website of the municipality of Zollikofen.

Energy Suppliers
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Wasserkraftwerk Peist AG Logo

Wasserkraftwerk Peist AG 

Arosa · Since 2017

Energy Suppliers
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wasserradbau guidi gmbh Logo

wasserradbau guidi gmbh 

Männedorf · Since 2019

The core activity of Wasserradbau GmbH is the construction and installation of water wheels for power generation.

Energy SuppliersMechanical Engineering Industry
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Wasserstoffproduktion Ostschweiz AG Logo

Wasserstoffproduktion Ostschweiz AG 

St. Gallen · Since 2019

The core activity of Wasserstoffproduktion Ostschweiz AG is the production of hydrogen as a future energy carrier for mobility, particularly for the operation of hydrogen-powered vehicles. The company makes the produced hydrogen available at AVIA hydrogen filling stations to offer a sustainable alternative to fossil fuels.

Energy SuppliersEnergy Industry
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Wattimmo SA Logo

Wattimmo SA 

Les Acacias · Since 2023

The company wattimmo.com is an online real estate portal that enables users to search, view and evaluate properties. The core activity of the company is to provide an online platform for the real estate market.

Technical Consulting & EngineeringEnergy Suppliers
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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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