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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

Roth Installations AG Logo

Roth Installations AG 

Melchnau · Since 1997

The core activity of Roth Installations AG consists of planning, realization and maintenance of electrical and heating installations, including the assembly, repair and maintenance of heating systems, as well as the execution of locksmith work, mechanical repairs and welding work.

Solar & Photovoltaics
View profile4.3(3)
Rudigier Kanalreinigung AG Logo

Rudigier Kanalreinigung AG 

La Punt Chamues-Ch · Since 2008

The core activity of Rudigier Kanalreinigung AG encompasses the provision of services in the field of sewer cleaning, hazardous substance remediation, roofing and flooring.

Waste Management Industry
View profile5(3)
Runge AG Logo

Runge AG 

Glarus · Since 1975

The core activity of Runge AG encompasses the planning, design and realization of construction projects in the fields of high-rise construction, civil engineering, hydropower plant construction, photovoltaics, civil engineering, as well as project and site development. The company offers holistic solutions that focus on energy efficiency and sustainability, and also advises customers on fire protection issues.

Building ConstructionCivil EngineeringSolar & Photovoltaics
View profile5(3)
Sadik Cebis Räumungen Logo

Sadik Cebis Räumungen 

Basel · Since 2016

The core activity of Sadik Räumungen, Entsorgungen und Abbrucharbeiten consists of carrying out clearances, demolition work and disposals for private and business customers, including apartment clearances, business clearances, cellar and attic clearances, clearance of private and business premises, as well as smaller and medium-sized demolition work.

Waste Management Industry
View profile5(3)
Satom SA Logo

Satom SA 

Monthey · Since 1972

The core activity of Satom SA is waste recovery and disposal, particularly thermal recovery of non-recyclable waste and methanization of biodegradable waste. To this end, the company operates two sites, one in Monthey for thermal recovery and one in Villeneuve for methanization. In addition, Satom SA offers other services, such as waste disposal, heat supply through district heating (Thermorezo) and the recovery of organic waste (GastroVert).

Waste Management Industry
View profile5(3)
Schenk & Söhne GmbH Logo

Schenk & Söhne GmbH 

Wynigen · Since 1995

The core activity of Schenk & Söhne GmbH is the disposal of food waste and used cooking oil, as well as the processing of biomass for biogas plants. This also includes services such as regular collection of food waste from customers, provision of containers in various sizes, and direct suction of biomass.

Waste Management Industry
View profile4.7(3)
Schneitter Weber Solar AG Logo

Schneitter Weber Solar AG 

Obergerlafingen · Since 2023

The core activity of Schneitter Weber Solar AG is the planning, implementation and operation of photovoltaic systems (PV systems), in particular roof-mounted, flat roof, in-roof and facade solar systems, for single-family homes, multi-family homes and commercial buildings in Switzerland.

Solar & Photovoltaics
View profile5(3)
Selmoni Burger AG Logo

Selmoni Burger AG 

Laufen · Since 1974

The core activity of Selmoni Burger AG encompasses the provision of services and products in the field of electrical engineering, specifically: building installations, electrical services, photovoltaics, installation checks, and communication technology. The company thus offers a wide range of electrical services and solutions for commercial and private customers.

Solar & Photovoltaics
View profile3.7(3)
Sgheiza SA Logo

Sgheiza SA 

Locarno · Since 2011

The core activity of Sgheiza SA consists of providing services in the field of waste management and disposal, including: waste collection, bulky waste collection, street cleaning, road transport services, and general waste collection services.

Waste Management Industry
View profile5(3)
Silent-Power AG Logo

Silent-Power AG 

Cham · Since 2002

Silent-Power AG develops and supplies methanol-based energy systems and solutions, including decentralised ECONIMO mini power plants as well as methanol-fired CHP units, heaters and backup power generators. The company promotes the use of climate-neutral M99 methanol for stationary and mobile heat and power applications.

Energy Suppliers
View profile4.7(3)
Solar Energy Plus SA Logo

Solar Energy Plus SA 

Bussigny · Since 2024

Solar Energy Plus SA designs, installs and maintains custom solar energy systems, with services including photovoltaic installations, photovoltaic façades, battery storage and charging stations.

Solar & Photovoltaics
View profile4.7(3)
SOLAR PLUS SERVICES SARL Logo

SOLAR PLUS SERVICES SARL 

Corcelles Ne · Since 2026

The core activity of SOLAR PLUS CONSULTING is consulting and planning of solar systems and renewable energy systems.

Solar & Photovoltaics
View profile5(3)
Solarpower Care AG Logo

Solarpower Care AG 

Oberuzwil · Since 2024

The core activity of Solarpower Care AG is the professional cleaning of solar systems and photovoltaic systems to optimize energy efficiency and production. This also includes additional services such as consulting, planning, repair, service, monitoring and the use of cleaning robots.

Solar & Photovoltaics
View profile5(3)
Solar-Werkstatt AG Logo

Solar-Werkstatt AG 

Affoltern Am Albis · Since 2014

The core activity of Solar-Werkstatt AG is the planning, installation and maintenance of photovoltaic systems, power storage systems and solar island systems. The company offers all services for photovoltaic projects from a single source, including preliminary design, design, tendering, execution, commissioning and yield monitoring. It specializes in grid-connected photovoltaic systems, solar power storage and self-consumption optimization.

Solar & Photovoltaics
View profile5(3)
Solektra AG Logo

Solektra AG 

Lucerne · Since 2009

The core activity of Solektra AG is the planning, construction and maintenance of photovoltaic systems for the production of solar power. The company offers services such as consulting, installation and maintenance of solar systems to support private individuals and companies in producing their own electricity and thus contributing to the energy transition.

Solar & Photovoltaics
View profile5(3)
SoloSolar GmbH Logo

SoloSolar GmbH 

Wallisellen · Since 2008

The core activity of SoloSolar GmbH is the planning, consulting and installation of photovoltaic systems, including the delivery and installation of photovoltaic modules, inverters, storage solutions and mounting systems. The company also provides services such as project development, administrative support and consulting to support customers in the implementation of solar projects.

Solar & Photovoltaics
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solplan ag Logo

solplan ag 

Mels · Since 2012

Solar & Photovoltaics
View profile4(3)
Sopra Solarpraxis AG Logo

Sopra Solarpraxis AG 

Ormalingen · Since 1954

The core activity of sopra Solarpraxis AG is the planning, installation and distribution of solar systems, in particular photovoltaic systems, as well as heating technology, including heat pumps, wood heating systems and oven construction. In addition, the company also offers absorption technology and drone technology.

Solar & Photovoltaics
View profile4.7(3)
Sotesy AG Logo

Sotesy AG 

Bubikon · Since 2023

Sotesy AG is a provider of environmentally friendly energy solutions, particularly in the field of renewable energies. The company's core activity includes planning, installation and maintenance of photovoltaic systems, heat pumps and radiant ceiling systems for private and commercial customers. The goal is to support customers in switching to regenerative energies and help them increase their independence from fossil fuels.

Solar & Photovoltaics
View profile5(3)
SunTechnics Fabrisolar AG Logo

SunTechnics Fabrisolar AG 

Gland · Since 2006

SunTechnics Fabrisolar AG designs, installs and maintains photovoltaic systems and turnkey solar solutions for commercial and private clients. Its services include feasibility studies, planning and engineering, construction, maintenance and cleaning, and coordination with component partners.

Solar & Photovoltaics
View profile5(3)
SunTechnics Fabrisolar AG Logo

SunTechnics Fabrisolar AG 

Effretikon · Since 1997

SunTechnics Fabrisolar AG designs and installs photovoltaic systems and provides turnkey solar system solutions. Its services include feasibility studies, engineering and planning, installation, repowering, cleaning and maintenance for private and commercial customers.

Solar & Photovoltaics
View profile5(3)
Surer AG Logo

Surer AG 

Nuglar · Since 2003

Surer AG provides logistics, transport and waste-management services, including bulk-material deliveries, container (Mulden) rental and recycling, and supplies quarry stone and aggregate materials.

Waste Management Industry
View profile4.7(3)
SVGW Fachverband für Wasser, Gas und Wärme Logo

SVGW Fachverband für Wasser, Gas und Wärme 

Zurich · Since 1988

The company's core activity is to ensure safety and quality in the areas of gas, water and heat, particularly through certification, inspection and consulting of plants and products, as well as promoting renewable energies and sustainable solutions.

Sustainability Sector
View profile4(3)
Swiss Food Academy Logo

Swiss Food Academy 

Geneva · Since 2018

The core activity of the company "Swiss Food Academy" is to promote healthy eating, especially for children, through educational and training programs, such as the "Gaia" and "Paprika" programs. The company also provides resources and tools for healthy eating and is committed to a sustainable future.

Sustainability Sector
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TECSA, Techniques Energétiques et Consulting SA Logo

TECSA, Techniques Energétiques et Consulting SA 

Conthey · Since 1998

The core activity of TECSA consists in planning, consulting and implementing technical solutions in the field of energy, particularly in the areas of heating, ventilation, air conditioning, sanitary technology and fire protection, as well as in the treatment of swimming pool water. The company offers its services to various industries, including residential buildings, restaurants and hotels, office buildings, educational institutions, sports facilities, health and wellness facilities, as well as industrial and craft businesses.

Solar & Photovoltaics
View profile5(3)
Terra Nova Umweltberatung GmbH Logo

Terra Nova Umweltberatung GmbH 

Breitenbach · Since 2002

Terra Nova Umweltberatung GmbH provides waste management and recycling services for industrial residues such as waste wood, paper sludge and sewage sludge, and arranges their material and energy recovery.

Waste Management Industry
View profile5(3)
Thoma Dach Spengler Fassade Solar AG Logo

Thoma Dach Spengler Fassade Solar AG 

Amden · Since 2015

The core activity of Thoma Dach Spengler Fassade Solar AG is the planning, delivery and installation of various works in the field of building envelopes, including: pitched roofs, flat roofs, facades, sheet metal work, lightning protection systems and photovoltaics (PV solar systems). The company thus offers a comprehensive range of services in the field of building envelopes.

Solar & Photovoltaics
View profile5(3)
Thomas Käser AG Logo

Thomas Käser AG 

Gümmenen · Since 2010

The core activity of Thomas Käser AG is the provision of electrical installations, including service, extension and maintenance work as well as new and renovation projects in the field of electrical engineering.

Electrical Planning & InstallationSolar & Photovoltaics
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Tonrec Swiss GmbH Logo

Tonrec Swiss GmbH 

Neuenhof · Since 2011

The core activity of Tonrec Swiss GmbH is the recycling and distribution of toner cartridges for printers and copiers. The company offers a wide range of toner cartridges for various printer and copier models, allowing customers to return their empty cartridges and exchange them for new or recycled ones. Additionally, Tonrec Swiss GmbH also provides private labeling services, enabling customers to offer their own toner cartridge products under their own brand.

Waste Management Industry
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TRANSVOIRIE SA, succursale Vaud Logo

TRANSVOIRIE SA, succursale Vaud 

Bussigny · Since 2013

TRANSVOIRIE SA, succursale Vaud provides waste management services including collection, sorting, treatment and valorisation for businesses, public bodies, healthcare facilities and construction sites. Transvoirie is a brand of the Helvetia Environnement group and also offers consulting, disposal solutions and sales of waste-collection equipment.

Waste Management Industry
View profile2.7(3)
TRANSVOIRIE SA Logo

TRANSVOIRIE SA 

Carouge Ge · Since 2000

TRANSVOIRIE SA provides waste-management services including consulting, collection, sorting, treatment and recovery of waste for businesses, public bodies, industry, healthcare facilities, events and construction sites. The company is a brand of the Helvetia Environnement group and also supplies waste-management equipment.

Waste Management Industry
View profile2.7(3)
TRANSVOIRIE SA, succursale d'Avry Logo

TRANSVOIRIE SA, succursale d'Avry 

Avry-Centre Fr · Since 2021

TRANSVOIRIE SA, succursale d'Avry provides waste management services including collection, sorting, treatment and recovery of waste for companies, public bodies, industry, healthcare establishments, events and construction sites. Services also cover facility-management solutions and equipment sales; Transvoirie is part of the Helvetia Environnement group and holds ISO 9001, ISO 14001, ISO 45001 certifications and a B Corp status.

Waste Management Industry
View profile2.7(3)
Transvoirie SA, succursale de Genève, à Satigny Logo

Transvoirie SA, succursale de Genève, à Satigny 

Satigny · Since 2015

Transvoirie SA, succursale de Genève, à Satigny provides waste management services, including collection, transport, sorting and recovery of waste. Its services target companies, municipalities, industrial and healthcare establishments as well as events and construction sites; the branch is part of the Helvetia Environnement group and holds ISO 9001, ISO 14001 and ISO 45001 certifications as well as a B Corp certification.

Waste Management Industry
View profile2.7(3)
TRASPORTI DONATO PASQUALE SAGL Logo

TRASPORTI DONATO PASQUALE SAGL 

Castione · Since 2009

The core activity of TRASPORTI DONATO PASQUALE Sagl is the provision of waste management services, specifically the collection, transportation and disposal of various types of waste, including inert materials, wood, metal, paper, cardboard, plastic, glass and other materials. The company also offers services such as delivery, collection and disposal of materials at authorized waste disposal centers.

Waste Management Industry
View profile2.3(3)
Treelium SA Logo

Treelium SA 

Stabio · Since 2013

The core activity of Treelium is the development and provision of innovative and sustainable technologies for water treatment and purification, particularly through the application of ultrasound, micro and nanotechnologies. The company offers solutions for various industries such as households, agriculture, industry and food processing, with the aim of reducing water consumption, optimizing processes and protecting the environment.

Sustainability Sector
View profile4(3)
Urs Oberholzer Sanitär GmbH Logo

Urs Oberholzer Sanitär GmbH 

Mosnang · Since 2010

The core activity of Urs Oberholzer Sanitär GmbH is the planning, consulting and execution of building technology services, particularly in the areas of: Sanitary work (e.g. bathrooms, boiler descaling, decalcification systems), heating systems, solar systems, plumbing work, roofing work, and maintenance and servicing of building technology systems. The company thus offers comprehensive solutions for the building technology needs of private and commercial customers.

Solar & Photovoltaics
View profile4.3(3)
Valmet Sàrl Logo

Valmet Sàrl 

Bouveret · Since 2008

The core activity of VAL-MET Sarl is the dismantling (demolition and disassembly) of industrial metal structures, particularly ships, as well as the recycling of ferrous and non-ferrous metals. Specific services include: dismantling of industrial metal structures, recycling of ferrous and non-ferrous metals, disassembly and demolition of ships, sale and purchase of metals, logistics and transportation of containers and bins, and vehicle destruction. The company also offers expertise and quotes for dismantling projects.

Waste Management Industry
View profile5(3)
Verband Abwasserreinigung Oberengadin (ARO) Logo

Verband Abwasserreinigung Oberengadin (ARO) 

S-Chanf · Since 2022

Verband Abwasserreinigung Oberengadin (ARO) is a municipal association responsible for collecting and treating the wastewater of its member municipalities and for operating the regional wastewater treatment plant ARA Oberengadin. The association may assume additional wastewater-treatment tasks and operates a carcass collection facility for its members.

Waste Management Industry
View profile5(3)
visaVento Solar AG Logo

visaVento Solar AG 

Frauenfeld · Since 2023

visaVento Solar AG is a company specialised in the development, construction and operation of wind and photovoltaic power plants. Its services cover consulting, project development, procurement, installation, commissioning and operations & maintenance, and it develops wind, PV and hybrid projects with a focus on Eastern Europe (notably Poland) and broader European markets.

Solar & Photovoltaics
View profile2.3(3)
von arx systems ag Logo

von arx systems ag 

Egerkingen · Since 2009

The core activities of arx systems include: 1. Automation: Development and implementation of electronic controls for machines and systems. 2. Solar technology: Planning, installation and maintenance of solar power systems. 3. Automower: Sales and service of autonomous lawn mowers. These activities are the company's main business areas and are supported by the various phone numbers and contact details on the website.

Solar & Photovoltaics
View profile5(3)
Vuna GmbH Logo

Vuna GmbH 

Dübendorf · Since 2016

The core activity of Vuna GmbH is the development and implementation of alternative (waste)water systems, including sanitary systems, drinking water systems, urine recycling technologies and recycling fertilizers. The company offers sustainable, site-specific solutions for wastewater treatment, resource recovery and drinking water treatment, particularly for remote or special applications such as tiny houses, mountain huts or urban new-build districts. An important part of the activities is the production of Aurin, a urine fertilizer that is considered the world's first officially approved urine fertilizer.

Technical Consulting & EngineeringWaste Management Industry
View profile5(3)
Wärmeverbund Riehen AG Logo

Wärmeverbund Riehen AG 

Riehen · Since 2009

The core activity of Wärmeverbund Riehen AG is the decarbonized heat supply of the municipality of Riehen through the operation of a heat network, the use of geothermal energy and the provision of related services.

Energy Suppliers
View profile2.3(3)
Wasserversorgungsgenossenschaft Neuenkirch Logo

Wasserversorgungsgenossenschaft Neuenkirch 

Neuenkirch · Since 1929

The core activity of Wasserversorgung Neuenkirch is to provide drinking water and fire water to the inhabitants of Neuenkirch and Sempach Station, including the maintenance and upkeep of the pipe and pipeline network, as well as advising and supporting customers with questions and problems related to water supply.

Water Supply
View profile4.7(3)
W. Bissegger AG Wil Logo

W. Bissegger AG Wil 

Wil Sg · Since 1984

The company provides comprehensive services in the field of heating renovation and installation, including consulting, planning and execution of work for new and renovation buildings. It specializes in the renewal of existing heating systems and the installation of climate-friendly solutions such as solar systems.

Solar & Photovoltaics
View profile4.7(3)
WEBARIA AG Logo

WEBARIA AG 

Immensee · Since 2010

WEBARIA AG rents and sells waste-management equipment and related components such as compaction containers, balers, shredding systems, weighing and conveyor technology, and spare parts. The company also provides maintenance and repair services, breakdown support, safety training, rental and used-equipment offerings, and develops waste-disposal concepts.

Waste Management IndustryWholesale - Machinery & Technical Equipment
View profile5(3)
WEBER DACH AG Logo

WEBER DACH AG 

Zurich · Since 2003

The core activity of Weber Dach AG is the provision of services related to roofs, particularly in the areas of: roof renovation and repair, roof insulation and sealing, fall protection and installation, skylight and solar system installation, maintenance and servicing of roofs, and consulting and estimating for roof projects. The company thus offers comprehensive solutions for all types of roofing work, from new constructions to renovations and repairs.

RoofingSolar & Photovoltaics
View profile5(3)
Weber Transporte AG Logo

Weber Transporte AG 

Laupen Be · Since 2013

The core activity of Weber Transporte AG is the provision of transport and disposal services, including clearances, skip rental, transport and professional disposal of waste. In addition, the company also offers advertising opportunities on its vehicles and containers.

Waste Management Industry
View profile5(3)
Wicki Dach- und Fassadenbau AG Logo

Wicki Dach- und Fassadenbau AG 

Flühli Lu · Since 2016

The core activity of Wicki Dach- und Fassadenbau AG encompasses the planning, execution and maintenance of roofing and façade work, including the installation of solar systems, green roofs, sheet metal work and lightning protection. The company also offers services in the areas of energy saving and façade maintenance.

Sheet Metal WorkSolar & Photovoltaics
View profile5(3)
Wingeier Haustechnik AG Logo

Wingeier Haustechnik AG 

Trubschachen · Since 2001

The core activity of Wingeier Haustechnik AG encompasses sanitary technology, water supply and drinking water hygiene. Specifically, the company offers solutions for the planning, installation and maintenance of sanitary systems, water supply systems and drinking water hygiene solutions for private and public institutions. This also includes the development and manufacture of its own products, such as well chamber covers under the Aqua-Top brand.

Solar & Photovoltaics
View profile5(3)
W. Meier AG Bilten Logo

W. Meier AG Bilten 

Bilten · Since 1969

W. Meier AG Bilten is an electrical installation company that plans, installs and maintains electrical systems. Its services include new builds and renovations, service and maintenance, building automation, lighting, telephony, multimedia and security systems, as well as photovoltaic installations; the company also sells household appliances and manages properties.

Solar & Photovoltaics
View profile4.7(3)
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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.