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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

Eiholzer AG Logo

Eiholzer AG 

Baldegg · Since 1983

The company's core activity is the planning, installation, maintenance and repair of heating, ventilation, air conditioning and sanitary systems, as well as the execution of renovation and modernization work in these areas.

Solar & PhotovoltaicsFacility Management & Cleaning
View profile5(6)
Electrio AG Logo

Electrio AG 

Reichenbach Im Kandertal · Since 1986

The core activity of ELECTRIO AG includes the planning, installation and maintenance of electrical systems for residential and commercial properties, as well as services in the areas of solar technology, agriculture, sound technology and household appliances.

Electrical Planning & InstallationSolar & Photovoltaics
View profile4.3(6)
ELECTRO SPARK SA Logo

ELECTRO SPARK SA 

Neuchâtel · Since 2021

ELECTRO SPARK SA provides electrical system design, installation and maintenance services for residential and commercial clients. Its offerings include telephony and fibre connections, IT network cabling and Wi‑Fi setup, home‑automation solutions, photovoltaic solar installations, and electrical repairs, safety upgrades and switchboard replacement.

Electrical Planning & InstallationSolar & Photovoltaics
View profile5(6)
Elektrizitätswerk Heiden AG Logo

Elektrizitätswerk Heiden AG 

Heiden

Elektrizitätswerk Heiden AG is an electricity utility and electrical services company. It supplies electricity, operates and maintains distribution networks, and provides installations and services for photovoltaics, telematics, fiber-optic connectivity, testing and maintenance, as well as an online shop.

Energy Suppliers
View profile4.8(6)
Elektro Bolt GmbH Logo

Elektro Bolt GmbH 

Ennetaach · Since 1999

The core activity of Elektro Bolt GmbH is the planning, coordination and execution of high and low voltage installations, including lighting concepts, light, telephone and multimedia connections, as well as electrical planning for new buildings, renovations and refurbishments in the areas of private customers, industry and public companies and institutions.

Electrical Planning & InstallationSolar & Photovoltaics
View profile5(6)
Elektro E. Peter AG Logo

Elektro E. Peter AG 

Wädenswil · Since 1986

Elektro E. Peter AG provides planning, installation, maintenance and repairs for electrical systems. Services include electrical installations, audio/video, telephone and cable-TV systems, telematics, automation/security and photovoltaic systems (installed with partner firms) for private, commercial and industrial customers.

Solar & Photovoltaics
View profile5(6)
Elektro Feuz AG Logo

Elektro Feuz AG 

Grindelwald · Since 1976

The core activity of Elektro Feuz AG is the planning, consulting and implementation of electrical installations, building automation, multimedia solutions and ICT services for companies and private individuals. This includes, in particular, the installation and maintenance of electrical systems, the implementation of smart home systems, the planning and implementation of video conferencing systems and digital signage solutions, as well as consulting and planning for efficient buildings.

Technical Consulting & EngineeringElectrical Planning & InstallationSolar & Photovoltaics
View profile4.3(6)
Elektro Fisch AG Logo

Elektro Fisch AG 

Gross · Since 2010

The core activity of Elektro Fisch AG is the planning, design, installation, maintenance and repair of electrical systems, devices and systems for private and industrial applications, including: electrical installations for building technology and home automation; renewable energy systems (solar systems, photovoltaic systems, combined heat and power systems); high and low voltage systems; telecommunications systems; heating systems (fossil fuel heating systems, electric heating systems, heat pumps); and household appliances (delivery, installation, maintenance). The company also provides consulting and service activities for these areas.

Solar & Photovoltaics
View profile5(6)
Elektro H. Christen GmbH Logo

Elektro H. Christen GmbH 

Kaltacker · Since 2007

The core activity of Elektro H. Christen GmbH is the provision of electrical installations and services, including: high-voltage and low-voltage installations, switchgear construction, multimedia and telephone systems, satellite systems, internet and network installations, photovoltaic systems, lighting, IT cabling, and the installation and sale of household appliances. The company primarily offers these services in the Emmental region and focuses on executing orders in new buildings and renovations.

Solar & Photovoltaics
View profile5(6)
Elektro Knöpfel AG Logo

Elektro Knöpfel AG 

Herisau · Since 1989

The core activity of Elektro Knöpfel AG includes the planning and installation of electrical systems, including lighting, photovoltaics, network and internet solutions, telephony and TV systems.

Solar & Photovoltaics
View profile5(6)
Elektro Möhl AG Logo

Elektro Möhl AG 

Jona · Since 2002

The core activity of Elektro Möhl AG is the provision of services and solutions in the field of electrical engineering, particularly in the following areas: electrical installations and inspections, photovoltaic systems and storage systems, e-mobility and charging infrastructure, communication systems and smart home solutions, consulting and planning of electrical projects, and maintenance and servicing of electrical systems. The company thus offers a comprehensive range of electrical engineering services for private and business customers.

Solar & Photovoltaics
View profile4.3(6)
Elektro Ruppen AG Logo

Elektro Ruppen AG 

Naters · Since 2003

The core activity of Elektro Ruppen AG is the planning, installation and maintenance of electrical systems, security systems and building cabling for residential, commercial and industrial buildings, including the installation of photovoltaic systems, storage systems and charging stations.

Electrical Planning & InstallationSolar & Photovoltaics
View profile4(6)
Eltel SA Logo

Eltel SA 

Donneloye · Since 1981

The core activity of Eltel SA consists of carrying out work in natural environments to promote the connection between these environments and improve ecosystems. This includes, among other things: maintenance of wetlands and renaturation of watercourses, restoration of wetlands and forestry work, control of invasive plant species, recovery of organic materials, and carrying out work in urban areas to improve the environment and mitigate the effects of climate change. The company offers specialized services tailored to the needs of its customers, relying on innovative solutions and an experienced team.

Sustainability Sector
View profile4.5(6)
Emmenegger Trans GmbH Logo

Emmenegger Trans GmbH 

Hellbühl · Since 2020

The core activity of Emmenegger Trans GmbH encompasses the following services: * Transport of bulk goods of all kinds (e.g. grain, green waste, wood chips, manure, asphalt, cast asphalt, construction machinery) * Crane work with crane trucks and various attachments (e.g. wood and bulk material grippers, personnel basket, winch) * Muck away service * Demolition and dismantling of residential, commercial and industrial buildings, including clearance of fire sites * Recycling of materials * Agricultural transports Thus, the company offers a wide range of services in the areas of transport, crane work, demolition and recycling.

Waste Management Industry
View profile4.7(6)
Energie Münchenbuchsee AG Logo

Energie Münchenbuchsee AG 

Münchenbuchsee · Since 2015

The company's core activity is the supply of electricity, water and heat to the municipality of Münchenbuchsee. This also includes public lighting and energy consulting. The company also offers services such as street lighting, e-mobility and ZEV/vZEV.

Energy Suppliers
View profile2.3(6)
Enertì SA Logo

Enertì SA 

Rivera · Since 2000

The core activity of Enerti SA consists of collaboration between the nine main companies responsible for electricity distribution in the canton of Ticino, in order to offer innovative and optimized services to customers by leveraging synergies.

Administrative ServicesEnergy Suppliers
View profile3.7(6)
EO Elektro Oberland GmbH Logo

EO Elektro Oberland GmbH 

Uster · Since 1999

EO Elektro Oberland GmbH performs electrical installations and provides planning and consultancy, including installation of photovoltaic systems and e‑charging stations. The company also offers 24/7 service and carries out work for new builds, conversions, renovations, lighting and switchgear.

Solar & Photovoltaics
View profile5(6)
Etcom Elektro AG Logo

Etcom Elektro AG 

Wetzikon Zh · Since 1996

The core activity of Etcom Elektro AG is the provision of services in the field of electrical engineering, particularly electrical installations of all kinds, including service, maintenance, project implementation and optimization of existing systems for new buildings, renovations and existing facilities.

Electrical Planning & InstallationSolar & Photovoltaics
View profile5(6)
F. BOVEY SA Logo

F. BOVEY SA 

Grolley · Since 1991

The core activity of F. Bovey SA consists of the installation, maintenance and repair of sanitary facilities, heating systems and ventilation systems. This includes in particular: Sanitary facilities: water connections and pipes, Heating systems: installation of solar panels, heat pumps and underfloor heating, Ventilation systems: installation of ventilation systems. The company offers its services in the regions of La Broye, La Glâne, La Sarine and surrounding areas.

Solar & Photovoltaics
View profile4.3(6)
Fischer Haustechnik AG Logo

Fischer Haustechnik AG 

Interlaken · Since 1979

Fischer Haustechnik AG provides sanitary and heating technology services, including consulting, planning, installation and maintenance. Offerings cover sanitary systems (new construction and renovation), heating systems, solar thermal installations and comfort ventilation, along with coordination with other trades.

Solar & Photovoltaics
View profile3(6)
Fondation Phoenix TSM Logo

Fondation Phoenix TSM 

Geneva · Since 2021

Fondation Phoenix TSM provides outpatient treatment, counselling and support services for people affected by addictions, with or without substances. Care is delivered by multidisciplinary teams integrating medical treatment, psychotherapy and social support. The foundation also operates a laboratory for urine toxicology analyses and is recognized as a postgraduate training institution in addiction medicine and psychiatry.

Sustainability Sector
View profile4.7(6)
FRANCHON Steeve Electricité Sàrl Logo

FRANCHON Steeve Electricité Sàrl 

Le Locle · Since 2004

The core activity of Franchon Steeve Electricité SàRL primarily involves providing services in the field of electrical engineering, including: installation and maintenance of electrical systems, sale and installation of electrical appliances (white goods), planning and installation of security systems (e.g. alarm systems, burglary protection, fire protection), installation of photovoltaic systems, and network installations. Additionally, the company also offers services in the area of kitchen planning and installation.

Solar & Photovoltaics
View profile5(6)
F. Tonet GmbH Logo

F. Tonet GmbH 

Pfäffikon Zh · Since 2009

The core activity of F. Tonet GmbH is the planning, implementation and maintenance of heating and plumbing installations, including repair services, renovations, consulting, alternative systems and conversions for living spaces, wet cells, single-family homes and condominiums.

Solar & Photovoltaics
View profile4.3(6)
Greifensee-Stiftung Logo

Greifensee-Stiftung 

Uster · Since 1997

The company offers a wide range of activities and services in the leisure and tourism sector, particularly in the region around Lake Greifen. The core activities include: rental of binoculars and boats, organization of work assignments and projects, offers for families and children, such as children's birthday parties and playgrounds, water activities such as swimming, boating, stand-up paddling and fishing, rental of bicycles and inline skates, organization of picnics and fireplaces, shipping and boat tours, nature observation and drone and model boat driving. The company appears to specialize in organizing leisure activities and renting equipment for tourism in the region around Lake Greifen.

Sustainability Sector
View profile4(6)
Groll Haustechnik AG Logo

Groll Haustechnik AG 

Trimmis · Since 2011

Groll Haustechnik AG is a building-services company offering sanitary installations, heating, ventilation and solar systems, together with integrated planning and project execution.

Solar & Photovoltaics
View profile4.8(6)
Hadorn Bauberatungen AG Logo

Hadorn Bauberatungen AG 

Staad Sg · Since 1992

The core activity of Hadorn Bedachungen & Wenger Bau GmbH primarily involves providing services and works in the construction sector, particularly: Roofing and roofing services (new buildings, renovations, refurbishments, repairs), Facade work and refurbishment, Window work (insulating windows, thermal insulation), Panel work (wall and floor panels), Core drilling, Conversion, renovation and refurbishment of buildings, Sheet metal work and metalwork, Solar systems, Pest control, All-round service for work in and around the house. The company thus offers a wide range of services for the construction and maintenance of buildings.

RoofingSolar & Photovoltaics
View profile4.2(6)
Hans Dürig AG Logo

Hans Dürig AG 

Riggisberg · Since 2001

The core activity of Hans Dürig AG is the planning, execution and consulting of heating and sanitary systems, particularly in the field of heat pumps, solar systems, wood heating systems, oil heating systems and sanitary installations. The company also offers energy consulting and planning services and is committed to vocational training.

Solar & Photovoltaics
View profile4.8(6)
HARAPOL AG Logo

HARAPOL AG 

Bilten · Since 2009

HARAPOL AG manufactures and supplies technical fluids and chemical products, including oils, lubricants and heat/cold transfer fluids. The company also provides services such as private/white-label production, on-site filling of large installations, laboratory analysis, technical consulting and hazardous-goods support, as well as certified disposal of used fluids.

Solar & Photovoltaics
View profile5(6)
HF Etienne GmbH Logo

HF Etienne GmbH 

Bettlach · Since 2010

The core activity of HF Etienne GmbH is the planning, installation, maintenance and repair of heating systems, including combustion controls, boiler cleaning and 24-hour emergency services. The company also offers services in the field of renewable energies, such as photovoltaic solutions and heat pump installations.

Solar & Photovoltaics
View profile5(6)
Ingenieurteam IFE AG Logo

Ingenieurteam IFE AG 

Rebstein · Since 1984

The core activity of Ingenieurteam AG encompasses the provision of services in the following areas: * Contaminant diagnostics and consulting * Utility company consulting (Energieversorgungsunternehmen) * General contracting * Photovoltaics * WIS/GIS (Factory Information Systems/Geographic Information Systems) * Thermography * Equipment and vehicle fleet management The company also offers project management and consulting in the areas of distribution networks, communication networks, electrical distribution networks, and approval procedures. Thus, the company's core activity lies in the field of technical consulting and services for the energy and supply industry.

Energy SuppliersSolar & Photovoltaics
View profile5(6)
InoSolar Sagl Logo

InoSolar Sagl 

Lumino · Since 2024

The core activity of InoSolar is the installation of photovoltaic systems and the associated consulting services. The company also offers additional services such as maintenance and cleaning of solar modules, installation of battery storage systems and the setup of charging stations for electric vehicles.

Solar & Photovoltaics
View profile5(6)
Juvent SA Logo

Juvent SA 

St-Imier · Since 1993

The core activity of Juvent SA is the operation of the largest wind farm in Switzerland, located on Mont-Crosin and Mont-Soleil in the Bernese Jura, which comprises a total of 16 wind turbines of different types.

Energy Suppliers
View profile4.8(6)
Kämpfer AG Gebäudetechnik Logo

Kämpfer AG Gebäudetechnik 

Dürrenroth · Since 1992

The core activity of Kämpfer AG is the provision of services in the field of building technology, particularly in the areas of plumbing, heating, solar and sheet metal work. The company offers installation, maintenance and repair of sanitary facilities, heating systems and solar systems, as well as sheet metal work.

Solar & Photovoltaics
View profile5(6)
Kanal Pur GmbH Logo

Kanal Pur GmbH 

Zurich · Since 2023

The core activity of KANAL PUR GmbH is the cleaning and maintenance of sewer systems, particularly in resolving blockages and clogs in wastewater systems, including the cleaning of sanitary pipes, industrial wastewater systems, toilet drains, kitchen drains, bathroom/shower drains, floor drains and infiltration pipes. This also includes emergency services, maintenance programs, inspections and the implementation of TV inspections and suction works.

Waste Management Industry
View profile5(6)
Karl Krebs AG Logo

Karl Krebs AG 

Kirchdorf Be · Since 1995

The core activity of Karl Krebs Kirchdorf AG includes the planning, installation, maintenance and repair of sanitary facilities, heating systems, leak detection, drying, renovation, water treatment, rainwater systems and solar systems. The company also offers services for water damage and flooding.

Solar & Photovoltaics
View profile2.7(6)
Kompostieranlage Seeland AG Logo

Kompostieranlage Seeland AG 

Murten · Since 1990

The core activity of Kompostieranlage Seeland AG is the utilization of green waste and the production of renewable energies and compost products. This includes in particular composting, biogas production and energy supply through a combined heat and power plant and a wood chip system.

Waste Management Industry
View profile4.7(6)
Kraftwerk Göschenen AG Logo

Kraftwerk Göschenen AG 

Göschenen · Since 1955

Kraftwerk Göschenen AG operates a hydroelectric power plant that uses water from the Reuss (Göscheneralp, Voralp and the Urserental) to generate electricity. The produced energy is allocated 55% to Schweizerische Bundesbahn AG (SBB) and 45% to Zentralschweizerische Kraftwerke AG (CKW), with CKW entrusted with plant operations.

Energy Suppliers
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Kurt Büchler AG, Bedachungen Logo

Kurt Büchler AG, Bedachungen 

Bischofszell · Since 1984

The core activity of Kurt Büchler AG encompasses the provision of services in the construction sector, particularly in the areas of: roofing (pitched and flat roofs), sheet metal work, scaffolding, facades, photovoltaics, and the renovation and refurbishment of buildings. The company thus offers a wide range of construction-related services tailored to the needs of builders and property owners.

Building ConstructionBuilding MaintenanceSolar & Photovoltaics
View profile4.2(6)
Kym AG Logo

Kym AG 

Diegten · Since 2022

The core activity of KYM AG is the production and marketing of wood energy, particularly wood chips, as well as the disposal and recycling of green waste. The company also offers services such as ash disposal, green recycling for companies and private individuals.

Waste Management Industry
View profile4.7(6)
LEDVANCE AG Logo

LEDVANCE AG 

Kemptthal · Since 1939

The core activity of LEDVANCE is the development, manufacture and distribution of lighting solutions, particularly LED lamps, electronic lighting components and traditional lamps, as well as the provision of services and tools in the field of lighting.

Solar & PhotovoltaicsElectrical Industry
View profile2.2(6)
Liechti & Rentsch Elektro Telematik GmbH Logo

Liechti & Rentsch Elektro Telematik GmbH 

Herzogenbuchsee · Since 2001

The core activity of Liechti & Rentsch GmbH is the provision of electrical services, including conversions and renovations, lighting, photovoltaics, service and repairs of household appliances, as well as communication services. The company also offers a 24-hour emergency service and focuses on providing quality and reliability in its services.

Electrical Planning & InstallationSolar & Photovoltaics
View profile5(6)
Marc Meyer Haustechnik Logo

Marc Meyer Haustechnik 

Oberägeri · Since 2003

The core activity of Meyer Haustechnik is the planning, installation, maintenance and repair of sanitary facilities, heating systems and solar systems for private and commercial customers. This also includes providing service activities such as customer service, repairs and replacement of household appliances.

Solar & Photovoltaics
View profile4.8(6)
Maréchaux Elektro AG Schlieren Logo

Maréchaux Elektro AG Schlieren 

Schlieren · Since 2020

The core activity of Maréchaux encompasses the planning, installation, and maintenance of electrical systems and installations, including: electrical installations for buildings and infrastructure projects, telematics and building automation, audiovisual solutions, photovoltaic and solar systems, electromobility, and service and maintenance of electrical systems. The company offers these services to various industries and clients, including industry, commerce, residential construction, hotels, restaurants, and infrastructure projects.

Solar & Photovoltaics
View profile5(6)
Masai Conseils SA Logo

Masai Conseils SA 

Cernier · Since 1981

The core activity of Masai Conseils SA is consulting and developing solutions in the field of energy efficiency, particularly in the context of buildings and the environment. Specifically, this includes: Hydrogeology and Geology, Development of energy efficiency solutions, including the use of renewable energies such as wood and solar energy, Consulting and planning of projects aimed at optimizing energy efficiency and using environmentally friendly energy sources.

Solar & Photovoltaics
View profile4.2(6)
Mehmetaj BM Rohrreinigungsservice Logo

Mehmetaj BM Rohrreinigungsservice 

Rüti Zh · Since 2018

The core activity of BM Rohrreinigungsservice is the cleaning, maintenance and renovation of pipelines, shafts and sewage systems, including the clearance of blockages, drying of water-damaged rooms, shaft emptying, shaft repairs and leak detection.

Waste Management Industry
View profile5(6)
MULDEN-TAXI SCHAFFNER Logo

MULDEN-TAXI SCHAFFNER 

Olsberg · Since 2017

The company 'Mulden-Taxi' offers a comprehensive service in the field of waste disposal and transportation of materials. The core activities include: rental and delivery of skips and containers in various sizes, disposal of waste, including bulk materials such as excavation, gravel, old wood and scrap metal, transportation of bulky items and construction machinery, demolition and dismantling, and delivery of building materials and excavator transport. The company focuses on the Northwestern Switzerland region, particularly in the Fricktal and Basellandschaft areas, and offers a cost-effective and environmentally friendly service.

Waste Management Industry
View profile5(6)
Mulden- und Entsorgungsservice Einsele AG Logo

Mulden- und Entsorgungsservice Einsele AG 

Rorschach · Since 2016

Mulden- und Entsorgungsservice Einsele AG provides skip and container rental as well as waste disposal, clearance and transport services. Offerings include mini skips (2 m3) up to containers (10–36 m3), press and thermal containers, lockable lid skips, pick-up service with a delivery van and a recycling yard accepting paper, scrap metal, e-waste and other material fractions.

Waste Management Industry
View profile5(6)
MZ Sanitär + Heizung AG Logo

MZ Sanitär + Heizung AG 

Lachen Sz · Since 1989

The core activity of MZ Sanitär + Heizung AG consists of planning, organizing and executing sanitary and heating work, including bathroom renovations, heating system upgrades and the installation of solar systems. The company also offers comprehensive services in the areas of renovation, consulting and maintenance.

Solar & Photovoltaics
View profile5(6)
Neue Plastrec AG Logo

Neue Plastrec AG 

Siggenthal Station · Since 2011

The company's core activity is the processing of industrial and production waste into a homogeneous material with a grain size of approximately 35mm, which can be used as a substitute fuel. This is achieved through a modern production facility capable of processing almost all types of waste, including plastic waste, printing waste, food packaging and production waste. The processed waste is then utilized in cement plants to maximize environmental benefits and reduce CO2 emissions.

Waste Management Industry
View profile4.3(6)
OPEO S.A. Logo

OPEO S.A. 

Le Mont-Sur-Lausanne · Since 1974

The core activity of Goutte is the disposal and recycling of waste, including the collection, transportation and processing of waste, as well as providing services in the field of waste management, such as consulting in waste management and container rental.

Waste Management Industry
View profile3.7(6)
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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.