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

Energy & Environment

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9'017 companies found

Reisswolf Aktenvernichtungs-AG Logo

Reisswolf Aktenvernichtungs-AG 

Dällikon · Since 1984

The company's core activity is the secure disposal of sensitive data and documents, particularly through file shredding, data carrier destruction, archive clearance and X-ray film destruction, as well as the provision of security services and products to prevent data leaks.

Waste Management Industry
View profile4.2(5)
REKA AG, Ablauf- und Kanalreinigung Logo

REKA AG, Ablauf- und Kanalreinigung 

Chur · Since 2018

The core activity of REKA AG is the cleaning of pipes and channels, particularly the cleaning of clogged drains, channels or pipelines. Specific services include drain cleaning, maintenance of the pipeline network of residential areas, hotels and industrial facilities, as well as the use of modern machinery and service vehicles such as flushing vehicles, suction vehicles and pipe inspection cameras.

Waste Management Industry
View profile3.4(5)
René Hugentobler AG Logo

René Hugentobler AG 

Züberwangen · Since 1989

The core activity of Rene Hugentobler AG is the provision of services in the field of sanitation and heating, including the installation, repair, maintenance and modernization of heating systems, as well as the provision of photovoltaic solutions and burner services.

Solar & Photovoltaics
View profile4.2(5)
Rolli's Entsorgung Logo

Rolli's Entsorgung 

Wangen An Der Aare · Since 2024

The core activity of Rollis Entsorgung encompasses the following areas: * Waste disposal service: Clearance and disposal of materials no longer in use, including moving clearance, complete clearance, and junk removal. * Cleaning service: Final cleaning and regular maintenance cleaning of properties, such as holiday apartments, offices, forecourts, and underground car parks. * Transport service: Carrying out small transports for private individuals and companies. Thus, the company offers a combination of waste disposal, cleaning, and transport services.

Waste Management Industry
View profile5(5)
Röthlisberger Haustechnik AG Logo

Röthlisberger Haustechnik AG 

Bützberg · Since 1983

Röthlisberger Haustechnik AG is a family-owned company specializing in building technology. The company's core activity encompasses the installation and maintenance of heating and sanitary technology as well as well construction services. Additionally, the company also offers training opportunities for apprentices in these areas.

Plumbing & Building ServicesSolar & Photovoltaics
View profile5(5)
RTB Regionale Technische Betriebe Logo

RTB Regionale Technische Betriebe 

Wildegg · Since 2019

The company's core activity is the provision of services in the field of public utilities, particularly in the areas of electricity, water, construction, district heating, IT services and communication networks, as well as the provision of energy and services for municipalities and municipal institutions.

Energy Suppliers
View profile3.4(5)
Sallin AG Logo

Sallin AG 

Tafers · Since 2018

Sallin AG is a building services company that provides planning, installation and maintenance of heating systems. The company designs systems in its technical office and installs and services heat pumps, solar systems and wood, oil and gas heating systems.

Solar & Photovoltaics
View profile4.4(5)
Schäfer Elektro GmbH Logo

Schäfer Elektro GmbH 

Niederhünigen · Since 2000

Schäfer Elektro GmbH provides electrical installation services, including planning and installation of electrical systems for new builds and renovations in residential, commercial and agricultural properties, as well as industry installations for the food sector. The company’s services also include design, installation and maintenance of photovoltaic systems, communication and telematics (telephone/satellite), network installation and KNX building automation.

Solar & Photovoltaics
View profile5(5)
Schlichtherle + Gillner AG Logo

Schlichtherle + Gillner AG 

Wallisellen · Since 1984

The core activity of Schlichtherle + Gillner AG is the planning, consulting and execution of heating, solar and refrigeration systems.

Solar & Photovoltaics
View profile5(5)
Schmocker Sanitär-Heizung Logo

Schmocker Sanitär-Heizung 

Beatenberg · Since 1998

Schmocker Sanitär is a flexible and innovative company specializing in the areas of sanitary, heating and solar energy. The core activities include: installation of new sanitary and heating systems, renovation and refurbishment of existing systems, repair and maintenance services for sanitary and heating systems, and planning and execution of projects in the field of solar energy. The company offers reliable and expert advice, planning and execution of projects in these areas.

Solar & Photovoltaics
View profile5(5)
Schneider Aarberg GmbH Logo

Schneider Aarberg GmbH 

Aarberg · Since 2015

The core activity of Schneider Aarberg GmbH is the planning, installation, maintenance and repair of building technology systems, particularly in the areas of heating, cooling, ventilation and solar systems.

Solar & Photovoltaics
View profile4.2(5)
Schnyder Alfred, Grüngutverarbeitung Logo

Schnyder Alfred, Grüngutverarbeitung 

Siebnen · Since 2015

The core activity of Grüngutverarbeitung Schnyder includes the professional disposal and processing of green waste, including: tree felling, stump grinding, green waste transportation, and green waste shredding. The company provides these services on-site, enabling the reuse of the processed green waste, thereby ensuring sustainability.

Waste Management Industry
View profile4.8(5)
Schweizerische Energie-Stiftung Logo

Schweizerische Energie-Stiftung 

Zurich · Since 1977

The core activity of the Swiss Energy Foundation (SES) is to promote a human and environmentally friendly energy policy. This includes in particular: Information work: SES provides background knowledge to the media, organizes events and publications, and raises public awareness of the problems of fossil and nuclear energy. Research: SES develops basic principles and positions on energy issues and commissions external studies. Lobbying: SES engages in dialogue with political institutions, authorities and other interest groups to achieve its goals. SES is committed to promoting renewable energy, reducing fossil and nuclear energy, and increasing energy efficiency and sufficiency.

NGOs & NPOsSustainability Sector
View profile3.4(5)
Senn Recycling AG Logo

Senn Recycling AG 

Brunnen · Since 1986

The company's core activity includes the production of gravel and granite stones, sewer and street cleaning, muckaway transport and excavation landfills, sorting and recycling of paper, scrap metal and metals.

Waste Management Industry
View profile3.4(5)
Sigi-Gebäudehülle AG Logo

Sigi-Gebäudehülle AG 

Diessbach B. Büren · Since 2021

The core activity of Sigi-Gebäudehülle AG encompasses the planning, execution and maintenance of work in the field of building envelopes, particularly: Roofing (roofing work), sheet metal work (metal work for roofs and facades), lightning protection (installation of lightning protection systems), carpentry (woodwork for roofs, facades and interior spaces), facade construction (construction and renovation of facades), and photovoltaics (installation of solar systems on roofs). In addition, the company also offers emergency services for bees, wasps and hornets, as well as apprenticeship training in the fields of roofing and sheet metal work.

RoofingSheet Metal WorkSolar & Photovoltaics
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Solarbau LOWEL GmbH Logo

Solarbau LOWEL GmbH 

Neuhausen Am Rheinfall · Since 2001

The core activity of solarbau LOWEL gmbh is the planning, installation and distribution of photovoltaic systems and battery storage systems.

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

Solar Clean GmbH 

Oensingen · Since 2022

The core activity of Solar Clean GmbH is the professional cleaning and maintenance of solar systems and photovoltaic systems to maximize their performance and energy yield. This includes the cleaning of solar modules, monitoring and optimization of solar systems, as well as the maintenance of photovoltaic systems to extend their lifespan.

Solar & Photovoltaics
View profile5(5)
Solar conseil Sàrl Logo

Solar conseil Sàrl 

Sonceboz-Sombeval · Since 2020

The core activity of Solar conseil Sàrl is the planning, installation and distribution of solar systems, in particular photovoltaic systems, as well as consulting and implementing projects in the field of renewable energies.

Solar & Photovoltaics
View profile5(5)
Solarenergie Küng GmbH Logo

Solarenergie Küng GmbH 

Wildegg · Since 2021

The core activity of Solarenergie Küng GmbH is the planning, installation, maintenance and servicing of photovoltaic systems (PV systems) as well as the provision of services in the field of solar energy, including monitoring, remote monitoring, cleaning, troubleshooting and after-sales service for PV systems.

Solar & Photovoltaics
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Solarline-Güttinger AG Logo

Solarline-Güttinger AG 

Zurich · Since 1997

The company is active in building technology and offers services in the areas of plumbing, heating, solar technology and photovoltaics. The core activities include planning, implementation, repair and maintenance of building technology systems, including sanitary facilities, heating systems, solar thermal and photovoltaic systems.

Solar & Photovoltaics
View profile5(5)
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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.