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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint744,378 companies indexed · Last updated: today
DirectoryEnergy & Environment

Energy & Environment

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8'993 companies found

Fritschi AG Logo

Fritschi AG 

Uerikon · Since 2008

The core activity of Fritschi AG is the execution of disposals, clearances and transports of all kinds, including dismantling, small demolitions and recycling. The company also offers collection and container services and has a collection point for private individuals and businesses.

Waste Management Industry
View profile4.9(8)
Fuchs Elektro Schindellegi AG Logo

Fuchs Elektro Schindellegi AG 

Schindellegi · Since 2006

The core activity of Fuchs Elektro Schindellegi AG is the provision of services in the field of electrical engineering, particularly in the following areas: electrical installations, service work, alarm systems, and e-mobility. Additionally, the company offers a 24/7 emergency service, available 365 days a year.

Electrical Planning & InstallationEnergy Suppliers
View profile4(8)
Globatec Sàrl Logo

Globatec Sàrl 

Crissier · Since 2003

Globatec Sàrl is a provider of garages and photovoltaic solutions. The company's core activity consists of planning, manufacturing and installing individually tailored concrete garages that meet the specific needs of its customers. Additionally, the company also offers solutions for the installation of photovoltaic systems.

Solar & Photovoltaics
View profile4.5(8)
Goldenberger Elektro AG Logo

Goldenberger Elektro AG 

Schlossrued · Since 1993

The core activity of Goldenberger Elektro AG encompasses a wide range of services in the field of electrical engineering, including: electrical installations in new buildings and renovations, telecommunications services, security systems, smart home solutions, and photovoltaic systems. The company offers these services to various customers, including companies, municipalities, and private households, primarily in the Northwestern Switzerland region.

Solar & Photovoltaics
View profile5(8)
Gravia Palézieux SA Logo

Gravia Palézieux SA 

Palézieux · Since 2010

Gravia Palézieux SA supplies sand and gravel products from quarries, offering certified aggregates for concrete and bituminous applications and handling recycled inert materials.

Waste Management Industry
View profile4.4(8)
H 2 M Exploitation SA Logo

H 2 M Exploitation SA 

Vufflens-La-Ville · Since 2018

H 2 M Exploitation SA recovers and processes mineral construction waste from excavations, demolitions and railway works into sands, gravels and other aggregates for sale. Its services include washing, crushing and treatment of minerals and the acceptance and classification of materials for material recovery.

Waste Management Industry
View profile4.8(8)
Hans Sommer GmbH Logo

Hans Sommer GmbH 

Wasen Im Emmental · Since 1997

The core activity of Hans Sommer GmbH is the planning, installation and maintenance of building technology systems, particularly in the areas of heating, sanitation and ventilation, with a focus on renewable energies such as wood and solar energy. This also includes the planning and installation of heat networks, chip firing systems, solar systems and ventilation systems.

Solar & Photovoltaics
View profile4.9(8)
Hausheizung Plus GmbH Logo

Hausheizung Plus GmbH 

Laupersdorf · Since 2022

The core activity of Hausheizung Plus GmbH is the provision of services in the field of heating and sanitation, including the installation, maintenance and repair of heating and sanitary systems, as well as support in the preparation of funding applications and building permit applications.

Plumbing & Building ServicesSolar & Photovoltaics
View profile5(8)
H. Lauenstein AG Logo

H. Lauenstein AG 

Langnau Im Emmental · Since 1981

The core activity of Elektro Telematik | ICT encompasses the areas of electrical installations, telematics, and renewable energies. Specifically, the company offers the following services: Electrical installations: electrical services, smart home solutions, lighting concepts, and electrical installations. Telematics: building cabling, communication solutions, cloud services, TV solutions for hotels and homes, as well as remote support. Renewable energies: photovoltaics and electromobility. Thus, the company offers a wide range of services in the fields of electrical engineering, communication technology, and renewable energies.

Solar & Photovoltaics
View profile4(8)
H&M Dorthe Sàrl Logo

H&M Dorthe Sàrl 

Bossonnens · Since 1998

The core activity of H&M Dorthe Sàrl is the provision of services in the fields of roofing, covering, heating and sanitary installations. Specifically, this includes: Roofing: Protection and beautification of roofs through covering work, installation of gutters and maintenance of roofs. Covering: Execution of construction projects, maintenance, renovation and installation of skylights or solar panels with various materials (e.g. tiles, slate, metal). Heating: Installation and maintenance of heating systems in houses, villas or buildings in the canton of Fribourg and its surroundings. Sanitary: Complete installation, renovation or repair of sanitary facilities, including a comprehensive range of services.

RoofingSheet Metal WorkSolar & Photovoltaics
View profile4.9(8)
Holzkraftwerk Aarberg AG Logo

Holzkraftwerk Aarberg AG 

Aarberg · Since 2017

The core activity of HKW Aarberg AG is the production of energy through the processing of waste wood in a wood-fired power plant. The company generates thermal energy with a capacity of 39 MW and supplies it as district heating to customers, including the sugar factory in Aarberg, to meet their energy needs.

Energy Suppliers
View profile4.1(8)
Hotz Technik GmbH Logo

Hotz Technik GmbH 

Mettmenstetten · Since 2016

The core activity of Hotz Technik GmbH is the planning, installation, maintenance and repair of solar systems, in particular thermal and photovoltaic systems, as well as the performance of boiler maintenance and other services in the field of solar technology.

Solar & Photovoltaics
View profile5(8)
Huber Elektro AG Logo

Huber Elektro AG 

Meiringen · Since 1985

Huber Elektro AG provides electrical services including consulting, planning and installations, as well as photovoltaic systems, lighting, smart-home solutions, e-mobility, fibre-optic and communication systems; the company also sells and installs household appliances.

Solar & Photovoltaics
View profile4(8)
Imfeld Trasporti Sagl Logo

Imfeld Trasporti Sagl 

Losone · Since 1999

The core activity of Imfeld Trasporti encompasses two main areas: 1. **Timber Trade**: The sale of firewood (mainly fir wood) to private individuals and pizzerias, including the offer of various wood products such as pellets, Accendifuoco, Legnetti, and Carbonella. 2. **Transport and Logistics Services**: The company provides various transport services, including: * General transport * Small removals * Clearances * Bulky waste collection * Use of different vehicles, including trucks, vans, and trailers. The company also offers special services such as the delivery of wood and other products by helicopter.

Waste Management Industry
View profile4.8(8)
Ing. Hochuli AG Logo

Ing. Hochuli AG 

Baden · Since 2004

The core activity of Ing. Hochuli AG is the planning, installation and maintenance of media-carrying building technology installations, particularly in the areas of sanitary, heating, solar, cooling and heat pumps.

Solar & Photovoltaics
View profile4.9(8)
Inverta AG Logo

Inverta AG 

Feusisberg · Since 2023

Inverta AG carries out projects in photovoltaics, e-mobility, energy storage and heat pumps. The company provides planning, installation, commissioning, monitoring and maintenance services for residential and commercial customers.

Technical Consulting & EngineeringElectrical Planning & InstallationSolar & Photovoltaics
View profile5(8)
ISD Fänglenberg AG Logo

ISD Fänglenberg AG 

Koppigen · Since 1999

ISD Fänglenberg AG operates a landfill and provides waste disposal services. The company publishes price lists for landfill fees and material supplies and offers BigBag solutions for asbestos.

Civil EngineeringWaste Management Industry
View profile4.3(8)
Iseli AG Lenzburg Logo

Iseli AG Lenzburg 

Lenzburg · Since 2020

The core activity of Iseli AG Haustechnik encompasses the planning, installation, maintenance and repair of building technology systems in the areas of heating, plumbing, solar and chimney construction.

Solar & Photovoltaics
View profile4.1(8)
Jaeggi Gmünder Energietechnik AG Logo

Jaeggi Gmünder Energietechnik AG 

Elgg · Since 2015

The core activity of Jaeggi Gmünder Energietechnik AG encompasses the planning, conception, and installation of solutions in the field of building technology and energy, particularly: Sanitary: planning and realization of sanitary facilities and works in single-family homes Heating: planning and realization of efficient heat generation systems, including heat pumps, solar technology, and fossil energy Solar heat: conception and installation of solar collector systems for domestic hot water and space heating Photovoltaics: planning and installation of photovoltaic systems for power generation. The company thus offers comprehensive solutions for building technology and energy supply.

Energy SuppliersSolar & Photovoltaics
View profile4.6(8)
Josef Iten AG, Kanalreinigung und Transporte Logo

Josef Iten AG, Kanalreinigung und Transporte 

Unterägeri · Since 1983

The core activity of Josef Iten AG includes sewer cleaning, sewer television, transportation (gravel, excavation, concrete, etc.), surface cleaning, dry vacuuming and disposal of oil, petrol and grease separators.

Waste Management Industry
View profile4.5(8)
Kiener Haustechnik GmbH Logo

Kiener Haustechnik GmbH 

Ersigen · Since 2000

The core activity of Kiener Haustechnik GmbH is the planning, installation and maintenance of building technology systems, particularly in the areas of heating, sanitation and ventilation. The company also offers consulting services and maintenance work, and has a showroom for product presentation.

Solar & Photovoltaics
View profile4.8(8)
Kohler AG Muldenservice Logo

Kohler AG Muldenservice 

Basel · Since 1950

The core activity of Kohler AG Muldenservice is the rental and transportation of skips for waste management projects, as well as the execution of crane work with specialized equipment. This also includes the delivery of hot asphalt, the disposal of drilling sludge, and the rental of specialized equipment such as grabs and vacuum suction units.

Waste Management Industry
View profile4.5(8)
Kruse AG Logo

Kruse AG 

Büren An Der Aare · Since 2004

The core activity of Kruse AG includes services in the field of pipe cleaning and maintenance, including: cellar pumping, pipe cleaning, high-pressure flushing, pipe filming, electromechanical cleaning, suction work, building drying, expert opinions, and standby services. The company thus offers a wide range of services to solve and prevent problems with pipes and channels.

Waste Management Industry
View profile3.4(8)
Kurt Wyler AG Logo

Kurt Wyler AG 

Oberdiessbach · Since 1988

The core activity of Kurt Wyler AG encompasses four main areas: 1. Plumbing & Heating, 2. Building Sheet Metal Work, 3. Industrial Sheet Metal Work, and 4. Chimney Construction & Ovens. Thus, the company offers services and products in the field of building technology, particularly in the areas of heating, plumbing, sheet metal work, and chimney construction.

Solar & Photovoltaics
View profile4.8(8)
Landert Haustechnik GmbH Logo

Landert Haustechnik GmbH 

Neerach · Since 2013

The core activity of Landert Haustechnik GmbH is consulting, planning and installing projects in the areas of heating construction, plumbing and solar systems.

Solar & Photovoltaics
View profile5(8)
Leonhardt Spenglerei AG Logo

Leonhardt Spenglerei AG 

Basel · Since 1992

The core activity of Leonhardt Spenglerei AG is the execution of roof and bathroom work, including renovations, new constructions, conversions and planning, in the Northwestern Switzerland region.

Sheet Metal WorkSolar & Photovoltaics
View profile5(8)
Leutenegger Elektro & Gebäudeautomation GmbH Logo

Leutenegger Elektro & Gebäudeautomation GmbH 

Frauenfeld · Since 2021

The core activity of Leutenegger-Elektro & Gebäudeautomation GmbH is the provision of electrical services and building automation, including the planning, installation and maintenance of electrical systems, PV systems and building automation systems.

Electrical Planning & InstallationSolar & Photovoltaics
View profile5(8)
Lio - Solar GmbH Logo

Lio - Solar GmbH 

Niederteufen · Since 2023

The core activity of Lio-Solar GmbH is the planning, installation and maintenance of photovoltaic systems (PV systems) as well as consulting and implementation of battery storage systems, commercial and large-scale storage systems, electric vehicle charging stations and energy management solutions. The company offers complete solutions for the use of solar energy, including system analysis, yield optimization and repairs.

Solar & Photovoltaics
View profile5(8)
Livers Kontroll GmbH Logo

Livers Kontroll GmbH 

Schluein · Since 2004

Livers Kontroll GmbH carries out inspections of electrical installations, prepares safety certificates and measurement and test reports in accordance with applicable legal regulations, and provides advisory and related services for electrical systems.

Solar & Photovoltaics
View profile5(8)
Logis Freyja, Inh. B. Liepelt Logo

Logis Freyja, Inh. B. Liepelt 

Scherzingen · Since 2020

The company's core activity is the rental of sustainable mobile homes, particularly the "Wohnwagon Logis Freyja", designed as a tiny house that enables autonomous, resource-efficient and sustainable living. The company offers trial living, holidays and viewings, and aims to inspire people to make sustainable and resource-conscious lifestyle choices.

Sustainability Sector
View profile5(8)
LOGISTA EG AG Logo

LOGISTA EG AG 

Spreitenbach · Since 2004

LOGISTA EG AG operates the LOGISTA marketplace for members of the DIE MEISTER trade community, providing a platform to procure building materials, tools and machinery. The company processes payments between suppliers and craft businesses and issues weekly collective invoices.

Painting & PlasteringSolar & Photovoltaics
View profile4.4(8)
Maison V. Guimet fils, Société Anonyme Logo

Maison V. Guimet fils, Société Anonyme 

Le Lignon · Since 1931

The company's core activity is the maintenance, inspection, repair and construction of sewage systems, including: inspection and diagnosis of sewage systems, repair and maintenance of sewage systems, construction and rehabilitation of sewage systems, camera inspection of sewage systems, leak detection and odor tracing, creation of schematic plans, performance of tightness tests, repair and maintenance of pumps and lifting stations, transportation and pumping of liquids. The company also offers emergency services and has a long history dating back to 1873.

Waste Management Industry
View profile4.5(8)
Müller Elektro Hitzkirch AG Logo

Müller Elektro Hitzkirch AG 

Hitzkirch · Since 1982

The core activity of Müller Elektro Hitzkirch AG is the planning, installation and monitoring of electrical and building technology, including: electrical installations, smart home solutions, building technology, network, telephone and WLAN installations, energy-efficient and automated building, and extensions with photovoltaic systems. The company provides comprehensive overall solutions for intelligent buildings and supports customers in the areas of agriculture and private construction projects.

Electrical Planning & InstallationSolar & Photovoltaics
View profile4.5(8)
NanoWatt S.A. Logo

NanoWatt S.A. 

Neuchâtel · Since 2013

NanoWatt S.A. is an electrical installation company with a federal diploma that provides planning and implementation of low- and high-voltage electrical systems, telephony and IT services; it also designs, sells and installs ecological LED lighting, security and home-automation systems.

Solar & Photovoltaics
View profile3.9(8)
Neosolar AG Logo

Neosolar AG 

Herisau · Since 2002

The core activity of Neosolar AG is the planning, consulting, installation and maintenance of solar systems, energy storage systems and electromobility solutions for private and commercial customers in Switzerland.

Solar & Photovoltaics
View profile5(8)
Nola Water Services GmbH Logo

Nola Water Services GmbH 

Rümlang · Since 2013

The core activity of Nola Water Services GmbH is the provision of services in the field of water supply and disposal, particularly: * Sewer cleaning and maintenance * Tightness testing * Rehabilitation of sewer systems * Limescale removal * Surface cleaning * TV recordings for damage identification * Repair and maintenance of water systems The company thus offers comprehensive solutions for the maintenance and operation of water supply and disposal systems.

Waste Management Industry
View profile5(8)
REFA Kanalreinigung GmbH Logo

REFA Kanalreinigung GmbH 

Brüttisellen · Since 2024

The core activity of REFA Kanalreinigung is the professional cleaning and maintenance of sewer and pipe systems, including pipe inspection, flushing, suction, pipe unclogging and surface cleaning. The company also offers maintenance agreements to ensure regular cleaning intervals and prevent major damage.

Waste Management Industry
View profile5(8)
Regazzi Schermature Solari SA Logo

Regazzi Schermature Solari SA 

Gordola · Since 2011

The core activity of Regazzi Schermature solari SA is the planning, sale and installation of shading and sun protection systems for indoor and outdoor areas, including pergolas, awnings, louvers, roller shutters, insect screens and other products, as well as related services such as consulting, installation and maintenance.

Solar & Photovoltaics
View profile4.4(8)
Regional Räumung Haligür Logo

Regional Räumung Haligür 

Frenkendorf · Since 2016

The core activity of the company 'Regional Räumung in Basel' is the provision of clearance, disposal and recycling services for private and commercial customers in the Basel region. This includes in particular: house and apartment clearances, commercial clearances, practice clearances, company clearances, valuable asset liquidations, appraisals, moves and transports, bulky waste disposal, clearance and recycling. The company emphasizes an environmentally friendly approach and a sensitive handling of customers' valuables.

Waste Management Industry
View profile5(8)
Rogger Sanitär-Heizung AG Logo

Rogger Sanitär-Heizung AG 

Ruswil · Since 1997

Rogger Sanitär-Heizung AG designs, installs and maintains building-technical systems, with a focus on sanitary installations, heating, ventilation and solar solutions, as well as bathroom renovations and a showroom. The company provides consultation, project management, maintenance and a 24-hour emergency service.

Solar & Photovoltaics
View profile4.9(8)
Rölli Schneider GmbH Logo

Rölli Schneider GmbH 

Unterentfelden · Since 2022

The core activity of Rölli Schneider GmbH is the provision of electrical services, including: electrical installations, network installations, photovoltaic systems, e-mobility solutions, and emergency power solutions. The company thus offers a wide range of services in the field of electrical engineering.

Electrical Planning & InstallationSolar & Photovoltaics
View profile5(8)
rwt Regionalwerk Toggenburg AG Logo

rwt Regionalwerk Toggenburg AG 

Bazenheid · Since 2001

The company is a regional energy and services provider that supplies its customers with electricity, water, communication and district heating. The core activities include the provision of energy and services such as fiber optic networks, operational management, pipeline data and technical services. The company also operates a hydroelectric power plant and offers additional services such as e-mobility and temporary network connections.

Energy Suppliers
View profile4(8)
Ryser Heizungen GmbH Logo

Ryser Heizungen GmbH 

Urdorf · Since 2012

The core activity of Ryser Heizungen GmbH is the planning, installation, renovation and maintenance of building technology systems, particularly heating systems, heat pumps, solar systems, underfloor heating and sanitary and heating systems.

Solar & Photovoltaics
View profile5(8)
Scholl Energies Sàrl Logo

Scholl Energies Sàrl 

Vernier · Since 2000

Solar & Photovoltaics
View profile4.5(8)
Selmoni Infranet AG Logo

Selmoni Infranet AG 

Münchenstein · Since 2006

The core activity of Selmoni Infranet AG encompasses the planning, implementation, and maintenance of infrastructure projects in the following areas: Fiber Services (FTTH network expansion), E-Mobility (electric charging stations and charging infrastructure), and Solar Power (photovoltaic systems and storage solutions). The company also provides consulting, planning, and implementation of projects in these areas and has specialized in the realization of sustainable and efficient energy and communication solutions.

Electrical Planning & InstallationSolar & PhotovoltaicsTelecommunications
View profile3.1(8)
ServiceTech GmbH Logo

ServiceTech GmbH 

Röthenbach Herzogenbuchsee · Since 2000

The core activity of ServiceTech GmbH is the planning, installation, maintenance and repair of building technology systems, particularly in the areas of heating, air conditioning/ventilation, solar thermal energy as well as swimming pool and wellness technology.

Plumbing & Building ServicesSolar & Photovoltaics
View profile4.8(8)
SH-Solartechnik AG Logo

SH-Solartechnik AG 

Baar · Since 2006

The core activity of SH-Solartechnik AG is the planning, installation and maintenance of solar systems and heat pumps, as well as the provision of energy storage solutions and smart energy solutions for a sustainable and independent energy future.

Solar & Photovoltaics
View profile5(8)
Solarenergie Seeland GmbH Logo

Solarenergie Seeland GmbH 

Studen Be · Since 2023

The core activity of Solarenergie Seeland GmbH is the planning, installation, and maintenance of photovoltaic systems for private households, with the goal of promoting sustainable energy generation and environmental protection. The company offers individual solutions tailored to its customers' needs, including energy management tools, regular maintenance and cleaning, to ensure efficient and reliable energy supply.

Solar & Photovoltaics
View profile5(8)
Solarex Sàrl Logo

Solarex Sàrl 

Belfaux · Since 2014

The core activity of Solarex Sàrl is the planning, installation and distribution of renewable energy solutions, particularly three types of solar energy systems: photovoltaic (PV), thermal solar energy and hybrid solar energy. The company also offers services such as applying for subsidies and commissioning the installed systems.

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

Solarlife GmbH 

Balgach · Since 2020

The core activity of SolarLiFe is the development, manufacture and distribution of high-quality, long-lasting and portable batteries, in particular lithium batteries (LiFePO4), as well as related products such as inverters, charge controllers and solar modules, which are used for the storage and use of electrical energy, especially for solar systems.

Solar & Photovoltaics
View profile5(8)
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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.