3'202 companies found
Walter Kälin Holzbau AG
Hinwil · Since 1997
The core activity of Walter Kälin Holzbau AG is timber construction, particularly the new construction, renovation and refurbishment of buildings with wood, as well as the manufacture of wooden frames and the installation of solar systems.
Walter Salzmann GmbH
Zuoz · Since 1997
The core activity of Walter Salzmann GmbH is the provision of services in the field of roofing and sheet metal work, including the planning, execution and maintenance of roof systems, as well as the installation of photovoltaic systems. Specifically, this includes the areas of: Roofing (pitched roof, flat roof, roof windows, roof coverings, roof renovations), sheet metal work (roof structures, metal roofs, dormer windows, snow retention systems), photovoltaics (planning, installation and maintenance of photovoltaic systems), renovations and refurbishments of roof systems, and sealing and insulation of building envelopes. The company offers these services for all types of roofs and is specialized in meeting the needs of customers in the Upper and Lower Engadine.
Walther Saalfeld Sourcing und Consulting
Glarus · Since 2008
The core activity of the company 'Walther Saalfeld Sourcing & Consulting' is the consulting and support of companies in the photovoltaic and solar technology industry, particularly in the planning, setup and optimization of production facilities, as well as in the development of business opportunities in China.
Wandu Energie AG
Trubschachen · Since 2020
The core activity of Wandu Energie AG is the trading of certificates of origin from renewable energy sources, particularly solar power, in Switzerland.
warm und kalt GmbH
Raron · Since 2022
warm und kalt GmbH provides installation services for heating and air-conditioning systems.
watt elec jura sa
Porrentruy · Since 2023
watt elec jura sa is an electrical services company that designs, installs and services electrical and energy systems. Its offerings include high- and low-voltage installations, photovoltaic systems, e-mobility charging solutions, project studies and planning, and maintenance contracts with a focus on energy optimization.
wega & sunergy gmbh
Diepoldsau · Since 2006
wega & sunergy gmbh provides project development, engineering, strategic consulting and project implementation for wind and photovoltaic projects, with services including site potential analyses, wind measurements (mast and LIDAR), yield assessments, permitting support, environmental impact studies and operation of solar partnership installations.
WELDEX GmbH
Wohlen Ag · Since 2020
The core activity of Weldex is the planning, installation and maintenance of solar energy systems for private households and companies, including the provision of solar modules and charging stations for electric vehicles.
Welz Wasser- und Energietechnik AG
Trogen · Since 2013
The core activity of Welz Wasser & Energietechnik AG encompasses the planning, installation and maintenance of heating, sanitary and climate technology systems. This includes, in particular, consulting, planning and installation of heat generation systems, such as heat pumps, as well as the renovation and servicing of existing systems. Furthermore, the company also offers services in the field of sanitary technology, such as planning and installation of bathrooms.
Werner Büchel AG
Oberriet Sg · Since 1993
The core activity of Werner Büchel AG consists of planning, installation, maintenance and repair of heating, sanitary and renewable energy systems, including oil burner service, solar and heat pump systems, as well as carrying out core drilling operations.
Weyermann K.W. AG
Bern · Since 1978
Weyermann K.W. AG is a roofing company that installs pitched and flat roofs, façade claddings, thermal insulation and solar systems. The company also provides maintenance (inspections, repairs, cleaning), drone aerial photography, energy consulting, planning and construction management.
wiba elektro AG
Marthalen · Since 2023
The core activity of wiba elektro AG is the provision of electrical engineering services, particularly in the areas of: electrical installations for renovation and new construction projects, service and repairs, network installations, multimedia solutions, building automation, and e-mobility. The company thus offers a wide range of electrical engineering services and positions itself as a reliable partner for electrical work.
WiKo Wiedmer Elektro-Kontrollen GmbH
Däniken So · Since 2007
The core activity of WiKo Wiedmer Elektro-Kontrollen GmbH is the performance of safety inspections and controls of electrical installations, as well as the provision of services in the field of energy consulting, expert opinions and training.
Wild Electric AG
Kriens · Since 1999
The core activity of WILD ELECTRIC AG is the provision of services in the field of electrical engineering, particularly in the areas of: electrical installations, communication, security, building automation, service and maintenance, electrical inspections, photovoltaics, and e-mobility. The company offers these services for various requirements and projects, with a focus on quality, innovation, and customer orientation.
Winasolar AG
Muotathal · Since 2008
Winasolar AG plans, sells, installs and services photovoltaic systems and related components such as inverters and energy storage. The company also supplies heat pumps under the Winatherm brand and carries out roofing and metalwork (spenglerei) services. Winasolar handles subsidy applications for customers and offers an online PV configurator and appointment booking.
Winasolar Produkt GmbH
Ettingen · Since 1996
Winasolar Produkt GmbH supplies photovoltaic systems, heat pumps (including the Winatherm brand) and roofing/sheet-metal services, and provides consultation, planning, installation and maintenance.
Windhubel AG
Guttet-Feschel · Since 2013
Windhubel AG provides energy consulting, yield calculations and planning for photovoltaic systems with battery storage. Its services include consulting for new buildings, assessment of investment projects, client representation for energy-related building projects, and activities related to renewable-energy equipment and real-estate acquisition, construction and rental.
W. Rokitzky AG
Wallisellen · Since 1987
The core activity of W. Rokitzky AG is the planning, installation, maintenance and servicing of heating, ventilation, air conditioning and sanitary systems, as well as the integration of renewable energies. This also includes a standby service and the performance of maintenance and repair work on these systems.
W. Rokitzky AG
Winterthur · Since 2023
W. Rokitzky AG is an owner-operated trade company providing planning, installation, renovation and maintenance of heating, cooling, ventilation, air-conditioning and sanitary systems. The company also delivers service and on-call emergency support, consulting and expert reports, and integrates renewable technologies such as heat pumps and thermal solar systems into building services.
WST Solar GmbH
Herrenschwanden · Since 2001
Outbound Leads by COHAGALeadhub delivers verified contact details and decision-makers from over 750,000 Swiss companies — management, procurement, marketing, HR.
Discover LeadhubHow the search works, what each filter means, and how the results come together.
Source: Federal Statistical Office, UID register