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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

Elektro Nüesch AG Logo

Elektro Nüesch AG 

Balgach · Since 1975

The core activity of Elektro Nüesch AG is the planning, execution and maintenance of electrical installations, including the construction and maintenance of power grids, transformer stations, distribution cabinets and the laying of network cables in the medium and low voltage range.

Solar & Photovoltaics
View profile4.7(13)
Elektro Wullschleger GmbH Logo

Elektro Wullschleger GmbH 

Vordemwald · Since 1996

The core activity of Elektro Wullschleger GmbH is the provision of services in the field of electrical engineering, particularly: electrical installations (light, heat, power), installation and maintenance of heat pumps, electromobility (charging infrastructure for electric vehicles), photovoltaics (installation and maintenance of solar systems), emergency power supply, and repair and maintenance of household appliances. The company also offers consulting and planning for individual projects and takes on small and large orders in these areas.

Solar & Photovoltaics
View profile4.9(13)
Elementkraft GmbH Logo

Elementkraft GmbH 

St. Margrethen Sg · Since 2015

The core activity of Elementkraft GmbH encompasses the planning, installation, and assembly of: Wood construction projects (e.g. terraces, facades, canopies) Electrical installations and electrical assemblies Solar systems (PV systems) for businesses and private households The company offers customized solutions for the installation of solar modules, electrical installations, and wood construction projects, with the goal of enabling sustainable and efficient energy supply.

Solar & Photovoltaics
View profile5(13)
Energie Thun AG Logo

Energie Thun AG 

Thun · Since 2001

Energie Thun AG supplies electricity, district heating and drinking water and provides related customer services. The company operates local power generation (including hydropower and solar), the distribution network, and offers energy consulting and outage services.

Energy Suppliers
View profile3.5(13)
EnergyOptimizer AG Logo

EnergyOptimizer AG 

Pieterlen · Since 2008

The core activity of EnergyOptimizer GmbH is the development and implementation of solutions for efficient and renewable energy supply, particularly in the field of decentralized energy supply solutions, such as solar installation and electrical installation. The company offers services such as energy consulting, planning and implementation to support customers in reducing their energy costs and CO2 emissions.

Solar & Photovoltaics
View profile3.8(13)
engitec AG Logo

engitec AG 

Winterthur · Since 2023

The core activity of engitec is the planning, installation and maintenance of sustainable energy solutions, particularly photovoltaic systems, energy storage systems and charging stations, as well as conducting feasibility analyses and optimizing energy solutions for private individuals and companies.

Solar & Photovoltaics
View profile5(13)
Evosun Sàrl Logo

Evosun Sàrl 

Massongex · Since 2015

The core activity of Evosun Sàrl is the planning, installation and maintenance of photovoltaic systems, electrical installations and roofing and sheet metal work. The company also offers solutions for the storage of renewable energy and the installation of charging stations for electric vehicles.

Solar & Photovoltaics
View profile4.7(13)
EW Sirnach AG Logo

EW Sirnach AG 

Sirnach · Since 2002

EW Sirnach AG is a utility and service provider operating electricity, water and communication networks and offering related services. The company advises, plans, builds, installs and maintains infrastructure and provides building-technology services such as electrical installations, photovoltaic systems, building automation, e‑charging stations, network construction, ICT and energy consulting.

Energy SuppliersSolar & Photovoltaics
View profile4.7(13)
Furrer Solartechnik GmbH Logo

Furrer Solartechnik GmbH 

Cham · Since 2023

The core activity of Furrer Solartechnik GmbH is the planning, installation and maintenance of solar technology systems, including solar thermal and solar power systems, as well as the performance of service and maintenance work for these systems.

Solar & Photovoltaics
View profile4.4(13)
Grimm Solar + Elektro AG Logo

Grimm Solar + Elektro AG 

Siselen Be · Since 2023

Grimm Solartechnik AG supplies custom solar systems for domestic hot water and heating support and provides photovoltaic installations. The company plans and installs systems with mounting on roofs, façades or canopies and adapts orientation and system selection to the building.

Solar & Photovoltaics
View profile4.7(13)
Helvetic PV GmbH Logo

Helvetic PV GmbH 

Kreuzlingen · Since 2009

The core activity of Helvetic PV GmbH is the planning, implementation, operation and servicing of photovoltaic systems (PV systems) as well as consulting and marketing of solar power. The company also offers services such as feasibility studies, PV system construction, PV servicing and PV roof rental.

Solar & Photovoltaics
View profile4.2(13)
Huber Umweltlogistik AG Logo

Huber Umweltlogistik AG 

Weinfelden · Since 1985

The core activity of Huber Umweltlogistik AG encompasses various services in the field of environmental logistics, particularly: * Sewer and pipe cleaning (including emergency services) * Surface and street cleaning * Bin and container services * Waste disposal services (including waste disposal center) * Crane and grabber work * Transportation services (especially for the construction industry) These services are offered to the public sector, commercial enterprises, and private individuals.

Waste Management IndustryLogistics & Transport Companies
View profile4.2(13)
Jacques Bosshard, Heizungs- und Lüftungs AG Logo

Jacques Bosshard, Heizungs- und Lüftungs AG 

Zurich · Since 1982

The core activity of Jacques Bosshard Heizungs- und Lüftungs AG is the planning, installation, maintenance and repair of heating, ventilation and air conditioning systems as well as the associated piping. The company offers a wide range of services, including the installation of heat pumps, boiler centers, solar systems, underfloor heating, radiators and cooling systems. In addition, the company also provides service offerings such as remote monitoring, water treatment and 24-hour emergency service.

Solar & Photovoltaics
View profile4.7(13)
Johner Elektro AG Logo

Johner Elektro AG 

Steffisburg · Since 1990

Johner Elektro AG is a branch of Brunner + Imboden AG providing electrical installation and planning services, including photovoltaic systems, project engineering, installation work, and ongoing service and maintenance.

Solar & Photovoltaics
View profile4.1(13)
JUD ENERGIE AG Logo

JUD ENERGIE AG 

Benken Sg · Since 2023

The core activity of JUD ENERGIE AG is the planning, installation and consulting of photovoltaic systems as well as energy optimization for buildings. This also includes the creation of energy consulting, the implementation of pollutant diagnostics and the installation of battery storage systems. The company also offers services in the field of building automation and Minergie certification.

Solar & Photovoltaics
View profile5(13)
Julius Wandeler AG Logo

Julius Wandeler AG 

Ruswil · Since 1979

The company's core activities include the areas of building technology and locksmithing, specifically: Building technology: heating, plumbing, air conditioning/ventilation, service and new constructions as well as renovations Locksmithing: chandelier manufacturing and general locksmithing work The company offers these services and employs staff in these areas.

Solar & Photovoltaics
View profile4.8(13)
Kanal-Institut AG Logo

Kanal-Institut AG 

Arisdorf · Since 2021

The core activity of Kanal-Institut AG is sewer rehabilitation and drainage technology, including services such as sewer cleaning, sewer inspection, tightness testing, milling work, manual rehabilitation, backflow protection, shaft rehabilitation and spray-brush-coating processes. The company offers customized solutions for individual requirements in the field of sewer rehabilitation and drainage technology.

Waste Management Industry
View profile4.5(13)
Keller Dach Solar AG Logo

Keller Dach Solar AG 

Zurich · Since 1989

The core activity of Keller Dach Solar encompasses the areas of chimney sweeping, heating, roofing, sheet metal work, and the installation of solar systems.

RoofingSolar & Photovoltaics
View profile5(13)
Koch Sanitär AG Logo

Koch Sanitär AG 

Wölflinswil · Since 2017

The core activity of Koch Sanitär AG is the execution of sanitary installations for new and renovation projects, including the planning of bathroom renovations using CAD and 3D animations, as well as the performance of repairs and maintenance work in the sanitary sector.

Solar & Photovoltaics
View profile4.3(13)
Lehmann AG Hirschthal Logo

Lehmann AG Hirschthal 

Hirschthal · Since 2011

The core activity of WC Wakab AG is the rental of mobile toilets, WC trailers, shower cabins and other sanitary facilities for large and small events as well as construction sites in Switzerland.

Waste Management Industry
View profile4.5(13)
Lenzin Heizungen AG Logo

Lenzin Heizungen AG 

Wölflinswil · Since 1999

The core activity of Lenzin Heizungen AG is the planning, development and installation of heating and heat technology systems, including heat pumps, wood heating systems, solar systems, oil and gas heating systems, district heating, heat distribution systems and comfort ventilation systems. Additionally, the company offers services such as building energy consulting, heating service and oil heating service.

Solar & Photovoltaics
View profile4.9(13)
MB Service Haustechnik AG Logo

MB Service Haustechnik AG 

Brüttisellen · Since 2015

The core activity of MB Service Haustechnik AG is the provision of sanitary technical services, including: bathroom renovations, repair and maintenance work on sanitary facilities, sanitary installations, water treatment systems, and digital bathroom solutions. The company also offers consulting and planning for sanitary technical projects and implements them.

Interior ConstructionPlumbing & Building ServicesWater Supply
View profile5(13)
Nyffenegger Elektro AG Logo

Nyffenegger Elektro AG 

Windisch · Since 1971

The core activity of Nyffenegger Elektro AG is the provision of electrical installation services, including high and low voltage installations, telecommunications systems, photovoltaics, maintenance and repair work in new and renovation projects, as well as the planning and installation of electrical and photovoltaic systems.

Electrical Planning & InstallationSolar & Photovoltaics
View profile4.4(13)
Oliver Petrucciani Logo

Oliver Petrucciani 

Losone · Since 2016

Oliver Petrucciani provides transport, collection and waste disposal services, including container rental and the collection of scrap metal, bulky waste, green waste, wood, paper and glass. The company operates a collection and sorting centre authorized by the canton for regulated and special waste, coordinates delivery to specialised recyclers and implements an integrated quality and environmental management system (ISO 9001, ISO 14001).

Waste Management Industry
View profile5(13)
Petrucciani SA Logo

Petrucciani SA 

Losone · Since 2010

Petrucciani SA provides transport, collection and container rental services as well as disposal, recycling and demolition services for bulky waste, metal scrap, green waste, wood, paper and glass. The company operates an authorized collection and recycling centre handling reception, selection and sorting of materials and maintains integrated management systems certified to ISO 14001 and ISO 9001.

Waste Management Industry
View profile5(13)
Reusser Transporte AG Logo

Reusser Transporte AG 

Biberist · Since 1992

The core activity of Reusser Transporte AG encompasses a wide range of services in the fields of waste management, transportation, and gardening and landscaping. Specifically, the company offers the following services: waste collection and green waste disposal, skip rental, special transports, truck-mounted crane, thermosilo transport, chipping service, embankment mowing, rental of waste containers and portable toilets, tree cutting and snow removal. Thus, the company provides a comprehensive range of services for private individuals, companies, and municipalities in the Solothurn and Wasseramt regions.

Waste Management IndustryLogistics & Transport Companies
View profile4.2(13)
Ritter Recycling AG Logo

Ritter Recycling AG 

Altstätten Sg · Since 2002

The core activity of Ritter Recycling AG is the processing of gravel and recycling, including related services such as transportation, machine rental and contract work for agriculture.

Waste Management IndustryWholesale - Construction & Raw MaterialsTransport Companies
View profile4.5(13)
RSA Recycling- und Sortieranlage AG Logo

RSA Recycling- und Sortieranlage AG 

Buchs Sg · Since 2004

The core activity of RSA AG is the disposal and recycling of waste from industry, commerce and private households. To this end, the company operates a professional sorting facility for the recovery of valuable materials from delivered materials and special waste. The services include, among other things, the acceptance of industrial and commercial waste, private deliveries, special waste, old wood, as well as free delivery and container service.

Waste Management Industry
View profile4.2(13)
RUNER SOLAR GMBH Logo

RUNER SOLAR GMBH 

Aarau · Since 2020

The core activity of RUNER SOLAR is the planning, installation and maintenance of photovoltaic systems for private and commercial customers in Switzerland. The company offers comprehensive services, from consulting and planning to installation and maintenance of solar systems, with the goal of supporting customers in using renewable energy and reducing their energy costs.

Solar & Photovoltaics
View profile5(13)
Saffental AG Logo

Saffental AG 

Rickenbach Lu · Since 2016

Saffental AG carries out road and civil engineering works, including asphalt and concrete roads, paving, sewers and utility lines. The company also produces gravel and concrete and provides landfill and recycling services as well as skip and transport solutions.

Waste Management Industry
View profile4.7(13)
Schiebler Wärmetechnik AG Logo

Schiebler Wärmetechnik AG 

Würenlos · Since 2008

The core activity of Schiebler Wärmetechnik GmbH encompasses the planning, installation, maintenance and repair of heating systems, sanitary systems and solar systems. This also includes energy consulting, combustion control and the development of individual comprehensive solutions for customers. The company offers a 24-hour service for troubleshooting and also has a showroom for demonstrating equipment.

Solar & Photovoltaics
View profile4.5(13)
Schneider Umweltservice AG Logo

Schneider Umweltservice AG 

Meilen · Since 1968

Schneider Umweltservice offers comprehensive, tailor-made waste management solutions, including recycling services, waste disposal, container and collection logistics, gravel and removal services, as well as crane and construction site vehicles. The core activities include the sustainable processing of industrial waste, the disposal of kitchen waste in the catering and hotel industry, the provision of waste management solutions for municipalities, and the return of materials to the material cycle through modern technologies and specialists.

Waste Management IndustryLogistics & Transport Companies
View profile5(13)
Spross Transport & Recycling AG Logo

Spross Transport & Recycling AG 

Zurich · Since 2014

Spross Transport & Recycling AG provides transport, waste disposal and recycling services, including clearance collection, container and skip services, operation of disposal sites, and buying and selling of recyclable and construction materials. The company performs truck transport and on-site work such as excavation, crushing, sieving, pressing, sorting and depositing.

Waste Management Industry
View profile4.5(13)
Switzerland Innovation Park Central Logo

Switzerland Innovation Park Central 

Rotkreuz · Since 2018

Switzerland Innovation Park Central is an innovation park focused on the building and energy sector. The company's core activity is to create a dynamic innovation ecosystem by connecting companies, universities, institutions, start-ups and students, and promoting collaboration and innovation. To this end, it offers spaces, labs with thematic focus, methodological expertise, a digital co-creation platform and events to accelerate the innovation process and create a livable built environment.

Sustainability Sector
View profile4.8(13)
Thommen AG Biel/Bienne Logo

Thommen AG Biel/Bienne 

Biel/Bienne · Since 1995

Thommen AG Biel/Bienne is a recycling and waste-management site within the Thommen Group offering processing and trading of secondary raw materials. Services include handling of ferrous and non-ferrous metals, electronic waste and batteries, vehicle recycling, comprehensive disposal solutions and logistics/packaging.

Waste Management Industry
View profile4.4(13)
Trikora AG Logo

Trikora AG 

Aarwangen · Since 2021

The core activity of Trikora AG is the production and distribution of promotional gifts, in particular promotional gifts with logos, as well as the transformation of recycled materials such as old advertising banners into useful products like bags, cases and other accessories.

Sustainability Sector
View profile4.6(13)
Tschudin AG Spenglerei und sanitäre Anlagen Logo

Tschudin AG Spenglerei und sanitäre Anlagen 

Waldenburg · Since 1981

The core activity of Tschudin AG Waldenburg is the provision of services and works in the field of sheet metal work and sanitary technology, including: sheet metal work (e.g. flat roof, pitched roof, solar technology, special manufacturing), sanitary work (e.g. installations, repairs, maintenance), well construction, water pipe installations, rainwater and wastewater management, and renovation and new construction work. The company also offers apprenticeships for sheet metal workers and sanitary installers.

Sheet Metal WorkSolar & Photovoltaics
View profile4.5(13)
Verbier Green Sàrl Logo

Verbier Green Sàrl 

Le Châble Vs · Since 2022

The core activity of Verbier Green is to provide recycling services to private households, companies and institutions in the Verbier region. This includes in particular: the collection and processing of recyclable materials such as plastic, glass, paper and food waste; the provision of logistics services for the disposal of bulky waste and other waste; advising and supporting customers in implementing recycling programs and reducing waste; and carrying out moving and transportation services for customers in the Verbier region.

Waste Management Industry
View profile5(13)
Vittorio Salvi AG Logo

Vittorio Salvi AG 

Zollikofen · Since 1981

Vittorio Salvi AG provides recycling and waste-disposal services and rents containers and skips. Its services include collection, transport and sorting of waste paper, scrap metal and bulky waste, as well as dismantling of metal installations and secure document destruction.

Waste Management Industry
View profile4.4(13)
Ziegelgut Recycling GmbH Logo

Ziegelgut Recycling GmbH 

Burgdorf · Since 2010

The core activity of Zirec Ziegelgut Recycling GmbH is the disposal and recycling of materials, particularly for commercial enterprises and agriculture. The company offers services such as material acceptance, material sales, disposal concepts, and the provision of skips, containers, and vessels.

Waste Management Industry
View profile4.8(13)
Zufferey Electricité SA Logo

Zufferey Electricité SA 

Vissoie · Since 2010

The core activity of Zufferey Electricité consists of planning, installing and maintaining electrical systems, including: installations of electrical systems for new buildings and renovations, photovoltaic systems, domotics systems, multimedia systems, service and repair of electrical systems, and consulting and planning of electrical systems through its own electrical engineering office. The company thus offers a comprehensive range of services in the field of electrical engineering.

Solar & Photovoltaics
View profile4.5(13)
AF Solartechnik AG Logo

AF Solartechnik AG 

Thusis · Since 2024

Solar & Photovoltaics
View profile4.9(12)
Alois Rickenbach AG Logo

Alois Rickenbach AG 

Gipf-Oberfrick · Since 2006

The core activity of Alois Rickenbach AG includes the planning and execution of electrical installations as well as the sale and service of household appliances. Specific services and products include: strong and weak current installations, communication, lighting, smart home, e-mobility, security, photovoltaics, sale of household appliances with accessories, and consulting and service for household appliances. The company thus offers a combination of electrical engineering services and the sale of household appliances.

Solar & Photovoltaics
View profile4.8(12)
A & S Holzbau GmbH Logo

A & S Holzbau GmbH 

Wiesendangen · Since 2022

The core activity of A&S Holzbau GmbH encompasses the planning, execution, and management of wood construction projects, including: Carpentry: planning, construction, and renovation of wooden structures such as roof trusses, half-timbered houses, and garages; Joinery: construction and renovation of wooden furniture and wooden components; Roofing: construction, renovation, and repair of flat and pitched roofs, as well as terraces and underground garage roofs; Sheet metal work: manufacturing, installation, and repair of gutters, downspouts, metal roofs, and façade cladding; PV and solar systems: delivery, installation, and maintenance of systems for harnessing solar energy; Scaffolding and cranes: creation of temporary work platforms and movement of workers and materials during construction work. The company offers comprehensive wood construction services from a single source and focuses on the Winterthur region, the Zurich metropolitan area, the Weinland region, and Eastern Switzerland.

Interior ConstructionTimber Construction & CarpentryRoofing
View profile4.7(12)
Batrec Industrie AG Logo

Batrec Industrie AG 

Wimmis · Since 1991

The core activity of Batrec Industrie is the treatment and recovery of special waste, in particular mercury-containing waste, batteries and accumulators, as well as the reactivation of used activated carbon. The company offers a closed system for the isolation and recycling of toxic substances and metals.

Waste Management Industry
View profile4.8(12)
cc energie sa Logo

cc energie sa 

Murten · Since 2005

The core activity of CC Energie is the provision of services in the field of energy supply, particularly in the areas of customer service and support (Customer Service Center), billing and invoicing (Billing), IT projects and solutions (IT & Projects), and network management and optimization (Réseau). The company also offers solutions for the digitization of processes and the automation of testing in the energy sector. It works closely with partners such as Groupe E and also offers a platform for managing customer interactions (OnePortal).

Waste Management Industry
View profile4.4(12)
Chauffage-Assistance SA Logo

Chauffage-Assistance SA 

Geneva · Since 1972

The core activity of Chauffage Assistance SA is the planning, implementation, maintenance and optimization of heating systems and renewable energy systems, particularly in the areas of: heating technology, renewable energy (e.g. heat pumps), energy optimization, repair and maintenance of heating systems, monitoring and control of heating systems, and renovation and modernization of heating systems. The company offers its services throughout the French-speaking Switzerland.

Plumbing & Building ServicesSolar & Photovoltaics
View profile4.3(12)
Colanero GmbH Logo

Colanero GmbH 

Münchenstein · Since 1996

The core activity of Colanero GmbH is the provision of services in the field of sanitary, heating and ventilation technology as well as renewable energies, particularly solar energy. The company offers consulting, planning, installation and maintenance of systems in these areas and targets private customers, property management companies, architects and the public sector.

Solar & Photovoltaics
View profile4.9(12)
CrestoELEC Sanjuan Lacoma Logo

CrestoELEC Sanjuan Lacoma 

Yverdon-Les-Bains · Since 2007

The core activity of Crestoelec is the provision of electrical services, including: electrical work (strong and weak current installations), teleinformatics and networks (installation and maintenance of telecommunications and network systems), comfort and security (installation of security systems and comfort facilities), and energy transition (support for the transition to renewable energy sources). The company offers these services to both private individuals and businesses and has its own fleet of vehicles to intervene quickly and efficiently within a 20 km radius.

Solar & Photovoltaics
View profile4.4(12)
David Fürst Sanitär-Heizung-Solar Logo

David Fürst Sanitär-Heizung-Solar 

Gunzgen · Since 2012

The core activity of David Fürst company encompasses the planning, installation and maintenance of sanitary, heating and solar systems. This includes in particular: sanitary work (new construction, renovation, modernization) including ventilation systems, heating renovations and installations, assembly and maintenance of solar systems, planning and consulting of SMART HOME systems, and VR bathroom planning. The company also offers a 24-hour customer service and comprehensive service services.

Solar & Photovoltaics
View profile4.7(12)
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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.