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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint744,805 companies indexed · Last updated: today
DirectoryEnergy & Environment

Energy & Environment

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IndustryEnergy & Environment
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Matching companies

9'003 companies found

Sun Eco System SA Logo

Sun Eco System SA 

Chêne-Bourg · Since 2023

The core activity of SUN ECO SYSTEM is the planning, installation and marketing of renewable energy solutions, particularly: Solar energy: installation of photovoltaic systems and solar panels Heat pumps: installation of heat pumps for heating and cooling Boilers: installation of thermodynamic boilers Charging stations: installation of charging stations for electric vehicles The company also provides consulting and support in the selection and installation of these solutions, as well as in the application for subsidies and financing options.

Solar & Photovoltaics
View profile4.7(14)
TARU AG Logo

TARU AG 

Thayngen · Since 2015

TARU is a Switzerland-wide operating company in the field of solar energy. The company's core activity is the development, production and distribution of components for solar systems, in particular inverter stations, generator connection boxes, fire department switches, overvoltage protection and transport solutions for PV modules. In addition, the company offers repair and consulting services for these components.

Technical Consulting & EngineeringSolar & Photovoltaics
View profile4.2(14)
Tobias Kälin AG Logo

Tobias Kälin AG 

Einsiedeln · Since 1969

The core activity of Tobias Kälin AG is the planning, installation and maintenance of heating and plumbing systems, including pipes, in the Einsiedeln region and its surroundings.

Solar & Photovoltaics
View profile4.8(14)
Walker Haustechnik AG Logo

Walker Haustechnik AG 

Grosshöchstetten · Since 1997

The core activity of Walker Haustechnik AG is the planning, installation and maintenance of building technology systems, particularly in the areas of sanitary and heating technology, alternative energies, water supply and comfort ventilation. A special focus is on the individual design of bathrooms and the consulting of customers on building technology issues.

Solar & Photovoltaics
View profile4.6(14)
Walter Marini SA Logo

Walter Marini SA 

Vacallo · Since 1996

The core activity of Walter Marini SA consists of providing services in the field of transport and lifting, including: goods and materials transportation, lifting and moving heavy loads with cranes, assembly and disassembly of plants and equipment, cleaning and disposal of materials, and provision of services to municipalities. The company also offers specialized services such as the transportation of industrial machinery, the assembly of tents, and the delivery of industrial refrigerators.

Waste Management Industry
View profile4.4(14)
YouPower AG Logo

YouPower AG 

Lamone · Since 2021

The core activity of YouPower AG is the development, planning, installation and maintenance of solutions for renewable energies, in particular solar energy, as well as e-mobility and energy management. The company offers a wide range of services, including the installation of photovoltaic systems, e-mobility solutions, energy management systems and solar storage systems. Additionally, it provides consulting services for energy efficiency and management.

Energy SuppliersSolar & Photovoltaics
View profile4.7(14)
Zemp Sanitär AG Logo

Zemp Sanitär AG 

Lucerne · Since 2015

The core activity of Zemp Sanitär AG Luzern & Emmen is the provision of services in the field of sanitary technology, including the installation, maintenance and repair of sanitary systems, as well as the assembly and distribution of sanitary products such as shower cubicles and toilet systems.

Solar & Photovoltaics
View profile4.6(14)
ADOC Assainissement SA Logo

ADOC Assainissement SA 

Vollèges · Since 2014

ADOC Assainissement SA provides emergency response and maintenance services for sewer and drainage systems as well as water‑damage interventions. Its services include high‑pressure cleaning and unblocking, CCTV inspection and leak detection, drying and water‑damage remediation, trenchless rehabilitation (liners and UV curing), pit and separator emptying, hydrodemolition and suction excavation, transport/crane services and equipment rental.

Waste Management Industry
View profile4(13)
ANTA SWISS AG Logo

ANTA SWISS AG 

Knonau · Since 1995

The company develops and manufactures waste management systems and urban furniture, such as waste containers, benches and drinking fountains, and also offers services in the field of waste management.

Waste Management IndustryMechanical Engineering Industry
View profile4.9(13)
Bachofner Kanalreinigungen AG Logo

Bachofner Kanalreinigungen AG 

Fehraltorf · Since 1996

The core activity of Bachofner Kanalreinigungen AG is the cleaning and maintenance of sewer pipes, wastewater treatment plants and pipelines, including the removal of blockages, flushing and suction work, as well as the performance of tightness tests and TV inspections.

Waste Management Industry
View profile5(13)
Baobab-Energy Sàrl Logo

Baobab-Energy Sàrl 

Savièse · Since 2017

Baobab-Energy Sàrl delivers turnkey photovoltaic installations and manages project planning, subsidy applications and commissioning. Services include battery storage, electric vehicle charging stations, energy consumption optimization, roof contracting and a flexible financing solution called FlexiSun.

Solar & Photovoltaics
View profile5(13)
Breu AG Logo

Breu AG 

Schwarzenburg · Since 1983

The core activity of Breu AG includes electrical installations, telematics, solar technology and photovoltaics. Specifically, the company offers services such as: high-voltage electrical installations, telephone and telematics installations (IT, network technology, TVA), switchgear combinations and control engineering, planning and design of electrical and photovoltaic systems, central vacuum systems, electrical appliance trade, lighting planning and implementation, and service and repair of household appliances. The company positions itself as 'your electrician' and emphasizes its long-standing experience in these areas.

Solar & Photovoltaics
View profile4.7(13)
BZS Heizung-Sanitär AG Logo

BZS Heizung-Sanitär AG 

Spiez · Since 2005

The core activity of BZS Heizung-Sanitär AG is the planning, installation, maintenance and repair of heating, sanitary and gas systems, as well as the laying of industrial pipes and the installation of solar systems.

Solar & Photovoltaics
View profile4.9(13)
Carl Franke Haustechnik AG Logo

Carl Franke Haustechnik AG 

Rorschach · Since 2010

The core activity of Carl Franke Haustechnik AG encompasses the planning and execution of building technology in residential and commercial construction, including: Heating: design, estimation, installation of heat generators and distribution systems Sanitary: planning and execution of water, gas, compressed air and chemical lines, swimming pools and laundry drains Industrial piping: construction of industrial piping for industry and commerce, cooling basins, transport lines and house connections Liquid gas: inspections and installations The company also offers neutral design and estimation of solar systems and coordinates with subcontractors.

Solar & Photovoltaics
View profile4.6(13)
Contena-Ochsner AG Logo

Contena-Ochsner AG 

Urdorf · Since 1976

The core activity of Contena-Ochsner AG is the development, manufacture and distribution of products and services in the field of waste management technology, particularly refuse collection vehicles, sweepers, washing vehicles, shredding and separation technology, compost turners, weighing and telematics systems, tipping trailers and containers. The company also offers services such as workshop and customer service, sales and consulting.

Waste Management Industry
View profile4.5(13)
Deponie Teuftal AG Logo

Deponie Teuftal AG 

Frauenkappelen · Since 1969

The core activity of Deponie Teuftal AG is the disposal and recycling of waste, particularly slag and other industrial waste. This includes landfilling, slag sorting, pre-treatment and the re-use of metals such as aluminium and copper. The company operates a landfill and offers various services in the field of waste disposal.

Waste Management Industry
View profile4.6(13)
die werke versorgung wallisellen ag Logo

die werke versorgung wallisellen ag 

Wallisellen · Since 2001

The core activity of the company 'die werke versorgung wallisellen ag' is the supply of energy and water, including the generation, distribution and sale of electricity, gas and water, as well as the provision of services in the areas of electromobility, heat and cold solutions and digital networks.

Energy Suppliers
View profile3.6(13)
Dolder Wärmetechnik AG Logo

Dolder Wärmetechnik AG 

St. Margrethen Sg · Since 1995

Dolder Wärmetechnik AG manufactures and develops heat pumps and heat-recovery systems and produces associated control cabinets and regulation technology. The company provides planning, delivery, installation, commissioning, maintenance and repair of heating, ventilation, air-conditioning and cooling systems, offering system solutions including brine/water, water/water, air/water, exhaust-air and wastewater heat-pump configurations for residential, commercial and industrial projects.

Solar & Photovoltaics
View profile3.2(13)
Elektro Iten-Steiner AG Logo

Elektro Iten-Steiner AG 

Oberägeri · Since 2006

The core activity of Elektro Iten-Steiner AG is the professional consulting and implementation of electrical installations, including network, photovoltaic and charging station installations, as well as the sale of electrical products in its own shop.

Solar & Photovoltaics
View profile4.8(13)
Elektro Mollet AG Logo

Elektro Mollet AG 

Brittern · Since 2016

Elektro Mollet AG is an electrical services company offering electrical installations, repairs and maintenance as well as electrical inspections. The company provides solutions for photovoltaics, energy storage, e-mobility, ZEV and building automation, and sells, installs and services household appliances.

Solar & Photovoltaics
View profile4.9(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.