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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
Search results

Matching companies

9'016 companies found

Helvetic PV GmbH Logo

Helvetic PV GmbH 

Kreuzlingen · Since 2009

The core activity of Helvetic PV GmbH is the planning, implementation, operation and servicing of photovoltaic systems (PV systems) as well as consulting and marketing of solar power. The company also offers services such as feasibility studies, PV system construction, PV servicing and PV roof rental.

Solar & Photovoltaics
View profile4.2(13)
Huber Umweltlogistik AG Logo

Huber Umweltlogistik AG 

Weinfelden · Since 1985

The core activity of Huber Umweltlogistik AG encompasses various services in the field of environmental logistics, particularly: * Sewer and pipe cleaning (including emergency services) * Surface and street cleaning * Bin and container services * Waste disposal services (including waste disposal center) * Crane and grabber work * Transportation services (especially for the construction industry) These services are offered to the public sector, commercial enterprises, and private individuals.

Waste Management IndustryLogistics & Transport Companies
View profile4.2(13)
Jacques Bosshard, Heizungs- und Lüftungs AG Logo

Jacques Bosshard, Heizungs- und Lüftungs AG 

Zurich · Since 1982

The core activity of Jacques Bosshard Heizungs- und Lüftungs AG is the planning, installation, maintenance and repair of heating, ventilation and air conditioning systems as well as the associated piping. The company offers a wide range of services, including the installation of heat pumps, boiler centers, solar systems, underfloor heating, radiators and cooling systems. In addition, the company also provides service offerings such as remote monitoring, water treatment and 24-hour emergency service.

Solar & Photovoltaics
View profile4.7(13)
Johner Elektro AG Logo

Johner Elektro AG 

Steffisburg · Since 1990

Johner Elektro AG is a branch of Brunner + Imboden AG providing electrical installation and planning services, including photovoltaic systems, project engineering, installation work, and ongoing service and maintenance.

Solar & Photovoltaics
View profile4.1(13)
JUD ENERGIE AG Logo

JUD ENERGIE AG 

Benken Sg · Since 2019

The core activity of JUD ENERGIE AG is the planning, installation and consulting of photovoltaic systems as well as energy optimization for buildings. This also includes the creation of energy consulting, the implementation of pollutant diagnostics and the installation of battery storage systems. The company also offers services in the field of building automation and Minergie certification.

Solar & Photovoltaics
View profile5(13)
Julius Wandeler AG Logo

Julius Wandeler AG 

Ruswil · Since 1979

The company's core activities include the areas of building technology and locksmithing, specifically: Building technology: heating, plumbing, air conditioning/ventilation, service and new constructions as well as renovations Locksmithing: chandelier manufacturing and general locksmithing work The company offers these services and employs staff in these areas.

Solar & Photovoltaics
View profile4.8(13)
Kanal-Institut AG Logo

Kanal-Institut AG 

Arisdorf · Since 2021

The core activity of Kanal-Institut AG is sewer rehabilitation and drainage technology, including services such as sewer cleaning, sewer inspection, tightness testing, milling work, manual rehabilitation, backflow protection, shaft rehabilitation and spray-brush-coating processes. The company offers customized solutions for individual requirements in the field of sewer rehabilitation and drainage technology.

Waste Management Industry
View profile4.5(13)
Keller Dach Solar AG Logo

Keller Dach Solar AG 

Zurich · Since 1989

The core activity of Keller Dach Solar encompasses the areas of chimney sweeping, heating, roofing, sheet metal work, and the installation of solar systems.

RoofingSolar & Photovoltaics
View profile5(13)
Koch Sanitär AG Logo

Koch Sanitär AG 

Wölflinswil · Since 2017

The core activity of Koch Sanitär AG is the execution of sanitary installations for new and renovation projects, including the planning of bathroom renovations using CAD and 3D animations, as well as the performance of repairs and maintenance work in the sanitary sector.

Solar & Photovoltaics
View profile4.3(13)
Lehmann AG Hirschthal Logo

Lehmann AG Hirschthal 

Hirschthal · Since 2011

The core activity of WC Wakab AG is the rental of mobile toilets, WC trailers, shower cabins and other sanitary facilities for large and small events as well as construction sites in Switzerland.

Waste Management Industry
View profile4.5(13)
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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.