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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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9'003 companies found

EKZ Eltop AG Logo

EKZ Eltop AG 

Fahrweid · Since 2018

The company's core activity encompasses providing services and solutions in the areas of: ICT services (information and communication technology), lighting solutions, e-mobility, and solar systems. Thus, the company offers a wide range of technical services and solutions focusing on information technology, energy efficiency, and sustainable mobility.

Solar & Photovoltaics
View profile3.5(14)
Elektro Märk AG Logo

Elektro Märk AG 

Lucerne · Since 1989

The core activity of Elektro Märk AG is the provision of services in the field of electrical engineering, including: electrical installations, building automation, telematics, engineering services, photovoltaics, lighting and lamp technology, e-mobility, energy management, and monitoring and electrical controls. The company also offers a 24-hour service and is involved in the restoration of electrical antiques and modern electrical devices.

Solar & Photovoltaics
View profile4.8(14)
Energie Oberkirch AG Logo

Energie Oberkirch AG 

Oberkirch Lu · Since 2021

The core activity of the company is the management and organization of the municipality of Oberkirch, including the provision of services such as tax administration, building administration, social services, financial administration and other municipal tasks.

Energy SuppliersMunicipalities
View profile3.6(14)
Ezero Sagl Logo

Ezero Sagl 

Mezzovico · Since 2021

The core activity of Ezero Sagl consists of planning, installing and maintaining: 1. Photovoltaic systems for private and commercial customers 2. Electric vehicle charging stations, both for private and public use. The company also offers complementary services such as energy consulting, financing support, incentive applications and maintenance of systems.

Solar & Photovoltaics
View profile4.9(14)
F. Hubmann GmbH Logo

F. Hubmann GmbH 

Kölliken · Since 2020

The core activity of F. Hubmann GmbH encompasses planning, consulting and execution of work in the field of building envelopes, specifically: pitched roof work (new construction, renovation, conversion), flat roof work (sealing, connections and terminations), façade construction (consulting, planning, installation and maintenance), sheet metal work (manufacturing of sheet metal parts such as gutters, downspouts, chimney cladding) and solar and photovoltaic systems (consulting, planning and installation). The company thus offers comprehensive services in the field of building envelopes and renewable energies.

Sheet Metal WorkSolar & Photovoltaics
View profile4.4(14)
Fitschi Transporte + Recycling AG Logo

Fitschi Transporte + Recycling AG 

Saas Im Prättigau · Since 1990

The core activity of Fitschi Transporte + Recycling AG is the provision of services in the field of waste disposal and transportation, particularly of municipal and industrial waste, as well as logistics and material management. This specifically includes: waste and goods transportation, skip rental services, disposal of municipal and industrial waste, operation of recycling centers, winter maintenance services, and logistics and vehicle management. The company thus offers a wide range of services in the field of waste disposal and transportation.

Waste Management IndustryLogistics & Transport Companies
View profile4.2(14)
Hans Roth AG Logo

Hans Roth AG 

Klingnau · Since 1965

The core business of Hans Roth AG encompasses the areas of sanitary technology, heating technology, water supply, solar/photovoltaics, industry and crane work. The company offers services such as planning, installation, maintenance and repair of sanitary facilities, heating systems, water supply systems and photovoltaic systems. Additionally, it provides emergency services and on-call services.

Solar & Photovoltaics
View profile4.4(14)
Hans Wittenwiler AG Logo

Hans Wittenwiler AG 

Bronschhofen · Since 1995

The core activity of Hans Wittenwiler AG is the planning, installation and maintenance of heating systems, with a particular focus on renewable energies such as wood-fired heating, heat pumps and solar systems. The company also offers a 24/7 emergency service and advises customers on the selection and implementation of heating solutions.

Solar & Photovoltaics
View profile4.6(14)
Heizung-Sanitär R. Müller GmbH Logo

Heizung-Sanitär R. Müller GmbH 

Holziken · Since 2008

The core activity of Heizung-Sanitär R. Müller GmbH is the planning, execution and maintenance of building technology systems, particularly in the areas of heating, sanitation, air conditioning, ventilation and solar systems. This also includes emergency services, repairs and renovations. The company also offers consulting and conception services for the optimal equipment of buildings with building technology systems.

Solar & Photovoltaics
View profile4.8(14)
IngEne SA Logo

IngEne SA 

Cadenazzo · Since 2013

IngEne SA is a specialist in renewable energies, particularly in the planning, installation and maintenance of photovoltaic systems, as well as the installation of charging stations for electric vehicles. They also offer financing solutions and consulting services to their customers.

Solar & Photovoltaics
View profile5(14)
Jan Weisskopf AG Logo

Jan Weisskopf AG 

Gebenstorf · Since 1971

The core activity of Jan Weisskopf AG is sanitary installation and the associated specialist trade. The company offers services in the field of sanitary technology and has specialized in the planning, installation and maintenance of sanitary facilities.

Plumbing & Building ServicesSolar & Photovoltaics
View profile4.9(14)
JOMA Solar GmbH Logo

JOMA Solar GmbH 

Wettingen · Since 2023

The core activity of JOMA Solar is the planning, installation, maintenance and optimization of solar systems for private and business customers, with the aim of promoting a sustainable energy future and minimizing energy costs.

Solar & Photovoltaics
View profile5(14)
Kern & Baur AG, Elektroinstallationen Logo

Kern & Baur AG, Elektroinstallationen 

Rafz · Since 1992

The core activity of Kern + Baur AG is the provision of services in the field of electrical installations, including high-voltage and low-voltage systems, engineering, on-call services and 24-hour emergency services for private households and industrial construction.

Solar & Photovoltaics
View profile4.4(14)
K. & M. Bucher Transporte AG Logo

K. & M. Bucher Transporte AG 

Schötz · Since 2013

The core activity of K. & M. Bucher Transporte AG is the provision of services in the fields of waste disposal, recycling, skip rental and tipping, including asphalt transport.

Waste Management Industry
View profile5(14)
Kurt Senn AG Logo

Kurt Senn AG 

Wichtrach · Since 1980

The company's core activity is the planning, installation, maintenance and renovation of heating and plumbing systems, including the sale and installation of heat pumps, oil heating systems, gas heating systems, wood heating systems, solar systems and Swedish stoves, as well as the renovation and conversion of bathrooms and shower toilets.

Solar & Photovoltaics
View profile3.8(14)
Melis Beeren AG Logo

Melis Beeren AG 

Kesswil · Since 2011

The core activity of Melis is the production of berries, particularly strawberries, raspberries, blueberries, blackberries, currants and gooseberries, in compliance with sustainability standards such as ÖLN and SwissGAP guidelines.

Sustainability Sector
View profile4.2(14)
Millasson Electricité SA - MESA Logo

Millasson Electricité SA - MESA 

St-Martin Fr · Since 1977

Millasson Electricité SA - MESA is a company specialized in the development and installation of electrical systems and products. It provides services including electrical installations, home automation and multimedia, electrical switchboards, inspections and controls, and project studies.

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

Neomontana Metall AG 

Oberrüti · Since 2022

The core activity of NEOMONTANA Metall AG is the trade in metals and scrap, including the acceptance, processing and resale of ferrous (Fe-products) and non-ferrous (NE-products) metal products.

Waste Management Industry
View profile4.7(14)
Priva Suisse GmbH Logo

Priva Suisse GmbH 

Villnachern · Since 2016

The core activity of PrivaSuisse GmbH is the development, manufacture and distribution of solar modules and photovoltaic systems. The company produces polycrystalline and monocrystalline modules and also offers installation and commissioning services. It focuses on the production of high-quality, environmentally friendly and sustainable products that meet international standards.

Solar & Photovoltaics
View profile5(14)
R. Dähler AG Logo

R. Dähler AG 

Engwilen · Since 2024

The core activity of R. Dähler AG encompasses a wide range of services in the construction sector, particularly: * Roofing work (pitched roofs, flat roofs, roof maintenance and repairs) * Timber construction (timber construction planning, timber construction work) * Metal construction (sheet metal work, lightning protection) * Scaffolding construction * Façade construction * Hall, commercial and agricultural construction * Crane work and transportation * Photovoltaics (PV systems) * Rental and sale of equipment and vehicles Thus, the company offers a comprehensive range of services for the construction and maintenance of buildings and facilities.

RoofingSheet Metal WorkSolar & Photovoltaics
View profile4.6(14)
Recycling Energie AG Logo

Recycling Energie AG 

Nesselnbach · Since 2009

The core activity of the company "Recycling Energie AG" is the production and distribution of renewable energies and products, in particular: * Eco-electricity * Biogas * Biodiesel * District heating * Organic fertilizer * Compost * Fermentation residue * Energy wood chips The company also operates a biogas plant and offers services such as gastronomy, retail, food industry and gastro-suction liners. It is committed to sustainable and environmentally friendly energy production and works with partners to close the natural cycles.

Energy SuppliersWaste Management Industry
View profile4.4(14)
Recycling Pfiffner Logo

Recycling Pfiffner 

Weite · Since 1997

The core activity of the company "Recycling Pfiffner" is the disposal and recycling of waste, particularly bulky waste, metal and other combustible materials. To this end, the company offers container services for waste collection and operates a recycling collection point for the residents of the municipality of Wartau. Additionally, a hazardous waste collection point is also provided.

Waste Management Industry
View profile4.6(14)
Roos Kompost AG Logo

Roos Kompost AG 

Kaltbrunn · Since 2011

The core activity of Roos Kompost AG is the composting of green waste and the production of high-quality compost for horticultural companies and private individuals. The company accepts green waste, shreds and composts it in compliance with environmental regulations, and delivers the finished compost to customers.

Waste Management Industry
View profile4.7(14)
Rüegsegger Elektro AG Logo

Rüegsegger Elektro AG 

Bätterkinden · Since 2021

The core activity of Rüegsegger Elektro AG is the planning, implementation and installation of electrical engineering solutions for buildings, particularly in the areas of: electrical installations, networks and telephony, switchgear construction, security systems, building automation, lighting systems and photovoltaics. The company offers comprehensive building technology solutions for new buildings, renovations and conversions, positioning itself as a flexible and competent contact for customer needs in electrical engineering.

Solar & Photovoltaics
View profile4.1(14)
Schneider Electricité S.A. Logo

Schneider Electricité S.A. 

La Chaux-De-Fonds · Since 1991

The core activity of Schneider Electric cannot be directly determined from the provided website, as the website is not accessible. However, based on the name "Schneider Electric" and the suffix ".ch" (for Switzerland), it can be assumed that the company is active in the field of electrical engineering and energy. Based on general information about Schneider Electric, the core activity can be described as follows: Schneider Electric is a global company that offers solutions for managing energy and industrial processes. The core activities include the development, manufacture, and distribution of products and services in the fields of electrical engineering, energy transmission and distribution, industrial automation, and building automation.

Solar & Photovoltaics
View profile4.4(14)
Schneider GmbH Heizung Sanitär Lüftung Logo

Schneider GmbH Heizung Sanitär Lüftung 

Suhr · Since 2001

The core activity of Schneider GmbH encompasses the planning, installation, maintenance and repair of sanitary, heating and ventilation systems for private individuals, architects and for new constructions, renovations or refurbishments.

Solar & Photovoltaics
View profile5(14)
Solarmaa GmbH Logo

Solarmaa GmbH 

Biel/Bienne · Since 2018

The company's core activity is the planning, coordination and implementation of solar system projects, including energy storage, control of components such as heat pumps or boilers and electric vehicles, as well as the clarification of customer needs and the development of energy future strategies. The company specializes in the interface between building technology and building envelope to ensure optimal quality in the installation of solar systems.

Solar & Photovoltaics
View profile5(14)
Solenergy Sàrl Logo

Solenergy Sàrl 

Mézières Vd · Since 2013

The core activity of Solenergy Sàrl is the installation of solar photovoltaic systems.

Solar & Photovoltaics
View profile4.9(14)
Sovitec Sàrl Logo

Sovitec Sàrl 

Orbe · Since 2008

The core activity of Sovitec is the planning, installation and maintenance of electrical systems of all kinds. The company specializes in the construction and maintenance of electrical installations and offers its services in the Nord-Vaudois and Gros-de-Vaud regions.

Solar & Photovoltaics
View profile4.5(14)
Strassburger Elektro AG Logo

Strassburger Elektro AG 

Ermatingen · Since 1993

The core activity of Strassburger AG encompasses the planning, installation and maintenance of electrical systems, including high and low voltage solutions, building technology, telematics and IT network solutions, multimedia, photovoltaics and household appliance sales. Furthermore, the company also offers services such as consulting, project planning, specialized construction management and on-call duty.

Electrical Planning & InstallationSolar & PhotovoltaicsRetail - Electronic Devices
View profile4.4(14)
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.