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

Energy & Environment

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IndustryEnergy & Environment
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Matching companies

9'016 companies found

Rölli Schneider GmbH Logo

Rölli Schneider GmbH 

Unterentfelden · Since 2022

The core activity of Rölli Schneider GmbH is the provision of electrical services, including: electrical installations, network installations, photovoltaic systems, e-mobility solutions, and emergency power solutions. The company thus offers a wide range of services in the field of electrical engineering.

Electrical Planning & InstallationSolar & Photovoltaics
View profile5(8)
rwt Regionalwerk Toggenburg AG Logo

rwt Regionalwerk Toggenburg AG 

Bazenheid · Since 2001

The company is a regional energy and services provider that supplies its customers with electricity, water, communication and district heating. The core activities include the provision of energy and services such as fiber optic networks, operational management, pipeline data and technical services. The company also operates a hydroelectric power plant and offers additional services such as e-mobility and temporary network connections.

Energy Suppliers
View profile4(8)
Ryser Heizungen GmbH Logo

Ryser Heizungen GmbH 

Urdorf · Since 2012

The core activity of Ryser Heizungen GmbH is the planning, installation, renovation and maintenance of building technology systems, particularly heating systems, heat pumps, solar systems, underfloor heating and sanitary and heating systems.

Solar & Photovoltaics
View profile5(8)
Scholl Energies Sàrl Logo

Scholl Energies Sàrl 

Vernier · Since 2000

Solar & Photovoltaics
View profile4.5(8)
Selmoni Infranet AG Logo

Selmoni Infranet AG 

Münchenstein · Since 2006

The core activity of Selmoni Infranet AG encompasses the planning, implementation, and maintenance of infrastructure projects in the following areas: Fiber Services (FTTH network expansion), E-Mobility (electric charging stations and charging infrastructure), and Solar Power (photovoltaic systems and storage solutions). The company also provides consulting, planning, and implementation of projects in these areas and has specialized in the realization of sustainable and efficient energy and communication solutions.

Electrical Planning & InstallationSolar & PhotovoltaicsTelecommunications
View profile3.1(8)
ServiceTech GmbH Logo

ServiceTech GmbH 

Röthenbach Herzogenbuchsee · Since 2000

The core activity of ServiceTech GmbH is the planning, installation, maintenance and repair of building technology systems, particularly in the areas of heating, air conditioning/ventilation, solar thermal energy as well as swimming pool and wellness technology.

Plumbing & Building ServicesSolar & Photovoltaics
View profile4.8(8)
SH-Solartechnik AG Logo

SH-Solartechnik AG 

Baar · Since 2006

The core activity of SH-Solartechnik AG is the planning, installation and maintenance of solar systems and heat pumps, as well as the provision of energy storage solutions and smart energy solutions for a sustainable and independent energy future.

Solar & Photovoltaics
View profile5(8)
Solarenergie Seeland GmbH Logo

Solarenergie Seeland GmbH 

Studen Be · Since 2023

The core activity of Solarenergie Seeland GmbH is the planning, installation, and maintenance of photovoltaic systems for private households, with the goal of promoting sustainable energy generation and environmental protection. The company offers individual solutions tailored to its customers' needs, including energy management tools, regular maintenance and cleaning, to ensure efficient and reliable energy supply.

Solar & Photovoltaics
View profile5(8)
Solarex Sàrl Logo

Solarex Sàrl 

Belfaux · Since 2014

The core activity of Solarex Sàrl is the planning, installation and distribution of renewable energy solutions, particularly three types of solar energy systems: photovoltaic (PV), thermal solar energy and hybrid solar energy. The company also offers services such as applying for subsidies and commissioning the installed systems.

Solar & Photovoltaics
View profile4.5(8)
Solarlife GmbH Logo

Solarlife GmbH 

Balgach · Since 2020

The core activity of SolarLiFe is the development, manufacture and distribution of high-quality, long-lasting and portable batteries, in particular lithium batteries (LiFePO4), as well as related products such as inverters, charge controllers and solar modules, which are used for the storage and use of electrical energy, especially for solar systems.

Solar & Photovoltaics
View profile5(8)
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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.