Solar & Photovoltaics in the
Canton of St. Gallen

Lenz Heiner

Since 1988 · 11–20 empl.·4.6(28)

Lenz Heiner provides planning, supply, installation and maintenance of heating and solar systems, including custom-made solar collectors and heating rails. Offerings include photovoltaic and solar-thermal systems, heat pumps, floor/wall/ceiling heating solutions and technical after-sales support.

Keller Gebäudetechnik GmbH

Since 2016 · 1–10 empl.·5.0(27)

Keller Gebäudetechnik GmbH provides planning, installation and maintenance of heating systems, including air‑to‑water and ground‑probe heat pumps, wood‑fired heating, thermal solar systems and gas and oil heating solutions.

Vetsch Gebäudehüllen AG

Since 1983 · 1–10 empl.·4.7(19)

The core activity of Vetsch Gebäudehüllen is the planning, execution and maintenance of building envelopes, particularly in the areas of roofs, facades and energy. The company offers comprehensive solutions for building envelopes, including pitched roofs, flat roofs, facades, liquid plastics and solar systems.

JUD ENERGIE AG

Since 2019 · 1–10 empl.·5.0(22)

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.

René Hugentobler AG

Since 1989 · 1–10 empl.·4.8(16)

The core activity of Rene Hugentobler AG is the provision of services in the field of sanitation and heating, including the installation, repair, maintenance and modernization of heating systems, as well as the provision of photovoltaic solutions and burner services.

Roth Bedachungen Fassaden AG

Since 1998 · 21–50 empl.·5.0(7)

The core activity of Roth Bedachungen Fassaden AG includes the planning, execution and maintenance of building envelopes, including: roofing work (pitched roof, flat roof), facade work, sheet metal work and lightning protection, balcony glazing, skylights, photovoltaic and solar systems, and maintenance and repairs of building envelopes. The company thus offers comprehensive services for the design, construction and maintenance of building envelopes.

solarmotion ag

Since 2015 · 21–50 empl.·4.5(17)

The core activity of solarmotion ag is the planning, installation and maintenance of solar systems, in particular photovoltaic systems, on the roofs of residential, commercial and industrial buildings. The company also offers special solutions such as in-roof, on-roof and solar facades, and supports customers in roof renovation and the integration of solar systems.

Eco SolarHome GmbH

Since 2021 · 1–10 empl.·4.8(59)

The core activity of eco SolarHome is the planning, consulting, sales and installation of photovoltaic systems and related products such as solar modules, storage systems, charging stations for e-mobility and smart home solutions. The company also offers services such as creating solar calculators and tariff calculators and supports customers in selecting and implementing renewable energy systems.

Müggler AG Spenglerei-Sanitär

Since 1985 · 1–10 empl.·4.7(14)

The core activity of Müggler AG is the provision of services in the field of sanitary and plumbing, particularly the planning, installation and maintenance of sanitary facilities as well as the execution of plumbing work.

Elektro Peter AG

Since 2018 · 21–50 empl.·4.6(46)

Elektro Peter AG provides electrical planning, installation and maintenance services for private and commercial clients. Its service offering includes communication and multimedia systems, smart home solutions, photovoltaics and battery storage, e-mobility charging, climate control devices, security systems, central vacuum systems and household appliances.

Gschwend Holding AG Zuzwil

Since 1984 · 11–20 empl.·5.0(7)

The company's core activity is wood processing and timber construction, particularly sawmilling, interior fitting and general contracting of historic buildings, as well as the production of wood products such as briquettes and the installation of photovoltaic systems.

Lampert + Walker AG

Since 1991 · 11–20 empl.·4.8(12)

Lampert + Walker AG is a service company specializing in the planning, execution and maintenance of heating and cooling systems in buildings. The core activities include consulting, planning and execution of projects in the field of building technology, particularly in the areas of heat pumps, natural gas/biogas, wood heating, solar systems and cooling.

Eberhard Sanitär GmbH

Since 2002 · 1–10 empl.·5.0(10)

The core activity of Eberhard Sanitär GmbH is the planning, installation and maintenance of sanitary technology, including: Sanitary installations in new and renovation projects, Installation of boilers and water heaters, Water softening and descaling, Installation of solar systems, Installation of central vacuum cleaners, Repairs and maintenance of sanitary technology, Planning and consulting for sanitary projects. The company also offers apprenticeships and service activities.

Dach Walser AG

Since 1990 · 1–10 empl.·5.0(11)

Dach Walser AG provides services for building envelopes and roof systems. Its offerings include pitched and flat roofing, metalwork (spengler) services, façade construction, photovoltaic installations, lightning and flood protection, roof windows, and maintenance and repair of roof and façade components.

Hans Wittenwiler AG

Since 1995 · 1–10 empl.·4.7(15)

The core activity of Hans Wittenwiler AG is the planning, installation and maintenance of heating systems, with a particular focus on renewable energies such as wood-fired heating, heat pumps and solar systems. The company also offers a 24/7 emergency service and advises customers on the selection and implementation of heating solutions.

aws solar ag

Since 2012 · 11–20 empl.·4.9(8)

The company's core activity is the planning, installation and maintenance of solar systems for private households, businesses and agricultural enterprises, with the aim of enabling sustainable and efficient energy supply.

Hüppi Dachbau AG

Since 2017 · 11–20 empl.·4.6(23)

The core activity of Hüppi Dachbau AG is the planning, execution and maintenance of roof and building envelopes, including flat roofs, pitched roofs, roof windows, sheet metal work, solar systems, facades, shingles and liquid plastic coatings. The company also offers services in the areas of construction, renovation and major construction sites.

Ammann Energy AG

Since 2023 · 1–10 empl.·5.0(24)

Ammann Energy AG is a solar energy company providing planning, consulting, installation and commissioning of photovoltaic systems. Its services include battery storage, electric vehicle charging solutions, smart-home integration and support with permit submissions and final acceptance.

SolarTec Rheintal GmbH

Since 1999 · 1–10 empl.·5.0(11)

The core activity of SolarTec Rheintal GmbH is the planning, construction and distribution of photovoltaic systems, including related services such as consulting, installation, maintenance and service. The company also offers additional services such as self-consumption analyses, energy optimizations and storage solutions.

Elektro Kleiner AG

Since 2002 · 11–20 empl.·5.0(4)

The company Elektro Kleiner AG offers a wide range of services in the field of electrical engineering. The core activities include: electrical installations, building technology and automation, telephone systems and UCC solutions, security and alarm systems, including camera and alarm systems, energy and sustainability solutions, such as LED lighting concepts, photovoltaic systems and electric vehicle charging stations, service and maintenance of electrical systems, including household appliances and control systems, and planning and project management of electrical projects. The company thus offers a comprehensive range of services in the field of electrical engineering, from planning and installation to maintenance and support of electrical systems.

Elektro Nüesch AG

Since 1975 · 1–10 empl.·4.7(14)

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.

W. Bissegger AG Wil

Since 1984 · 11–20 empl.·4.8(5)

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.

ewr elektro ag

Since 2007 · 21–50 empl.·4.4(18)

The core activity of ewr elektro ag is the planning, installation and maintenance of electrical systems in buildings, including the provision of solutions for building automation, smart home, photovoltaics and e-mobility. The company also offers services such as installation checks, project planning and consulting.

A. Winiger Sanitäre Anlagen GmbH

Since 1997 · 11–20 empl.·4.6(10)

The core activity of A. Winiger Sanitäre Anlagen GmbH is the planning, installation, maintenance and repair of sanitary systems in new and renovation projects, for both private homeowners and large customers. This includes, in particular, the creation of sanitary installations, the performance of regular maintenance work and the provision of emergency services. In addition, the company also offers renovation management services, where it coordinates various specialist trades such as painting, tiling, electrical, plastering and masonry.

Scheiwiller Bedachung-Spenglerei-Sanitär AG

Since 1997 · 1–10 empl.·4.9(8)

Scheiwiller Bedachung-Spenglerei-Sanitär AG provides roofing, sheet-metal (spengler) and sanitary/plumbing services and carries out building-envelope work. The company also designs and installs solar systems (photovoltaic and solar hot water) and offers energy consulting, renovation and maintenance services.

John Heizung + Sanitär AG

Since 2007 · 1–10 empl.·4.8(10)

The core activity of John Heizung + Sanitär AG consists of planning, coordinating, installing and repairing heating and sanitary systems, as well as planning and installing solar systems. This includes in particular: planning and installation of heating systems such as heat pumps, gas and oil heating systems; planning and coordination of complete sanitary systems for new and existing buildings, as well as renovations; design of bathrooms according to customer needs; installation and repair of sanitary systems; and planning and installation of solar systems for environmentally friendly energy generation.

Dürr Haustechnik AG

Since 1971 · 1–10 empl.·4.8(8)

The core activity of Dürr Haustechnik AG is the provision of services in the field of building technology, particularly in the following areas: sheet metal work, lightning protection, flat roofs, sanitary facilities, service, heating, and solar systems. The company thus offers a wide range of services focused on the installation, maintenance, and repair of building technology systems and installations.

Elektrizitätswerk Jona-Rapperswil AG

Since 1902 · 51–100 empl.·3.8(24)

The company's core activity is energy supply and services, particularly in the field of electricity supply, as well as providing services in the areas of installation, networks, building technology and energy consulting.

Rutz + Partner Elektro AG

Since 1998 · 1–10 empl.·4.8(10)

The core activity of Rutz & Partner Degersheim (rutz + partner elektro ag) is the provision of electrical services, including: electrical installations, photovoltaic systems, household appliances, network and telephone systems, lighting, and planning and consulting in the field of electrical engineering. The company thus offers a wide range of services in the field of electrical engineering and positions itself as an independent electrical company.

B. Stillhart Dach + Fassaden + Solar AG

Since 2007 · 21–50 empl.·4.6(7)

The core activity of B. Stillhart Dach + Fassaden + Solar AG encompasses the planning, execution and maintenance of roofing and facade work, including the installation of solar modules and photovoltaic systems. The services range from the construction of pitched and flat roofs to the assembly of facade elements and thermal insulation to power generation. The company also offers comprehensive consulting and services in the field of building envelopes, including repairs, renovations and new construction.

Marquart Dächer Fassadenbau AG

Since 2008 · 11–20 empl.·5.0(4)

The core activity of Marquart Dächer Fassadenbau AG is the provision of services in the field of roofing craftsmanship, including: roof windows, roof service, energy consulting, facade construction, flat roofs, insulation, crane work, photovoltaics, and pitched roofs. The company thus offers a wide range of services that focus on the planning, execution, and maintenance of roofs and facades.

Hurni Heizungen GmbH

Since 2012 · 1–10 empl.·5.0(12)

The core activity of Hurni Heizungen GmbH is the planning, installation, maintenance and energy consulting of heating systems, particularly in residential buildings, new and renovation projects, as well as providing services in the field of ventilation technology.

St. Gallisch-Appenzellische Kraftwerke AG

Since 2009 · 101–500 empl.·3.9(7)

The company's core activity encompasses the sustainable supply and networking of people and businesses with energy and data. This includes the entire value chain, from energy procurement to planning, construction, operation, and maintenance of networks and facilities, as well as financing solutions, sales, and billing. The company's business areas include in particular: electricity generation, electricity and heat supply, operation of a modern fiber optic network, internet and data connections, generation of renewable energy through hydroelectric power plants, wood-fired power plants, photovoltaic systems, and wind farms, as well as hydrogen production. The company thus offers a comprehensive range of services and products in the field of energy and data supply.

G & O sunsolutions GmbH

Since 2011 · 1–10 empl.·4.3(6)

The core activity of G&O sunsolutions GmbH is the planning, execution and maintenance of solar technology systems, including photovoltaic systems, battery storage and energy management systems. The company also offers services such as roof renovation, contracting and e-mobility.

Solarform AG

Since 2022 · 1–10 empl.·5.0(12)

The core activity of Solarform AG is the planning, consulting and installation of solar systems for private and industrial customers. The company offers a "carefree package" that includes a turnkey handover of solar projects, including design, execution and assembly.

Steinlin Energie AG

Since 1989 · 11–20 empl.·5.0(3)

The core activity of Steinlin Energie AG is the provision of services and solutions in the field of renewable energies, particularly in the areas of photovoltaics, e-mobility, energy storage and energy management. The company also offers financing and refinancing options.

Podhradsky AG, Heizungen

Since 1982 · 1–10 empl.·5.0(3)

Podhradsky AG, Heizungen provides heating and solar systems and publishes project information and contact details on its website.

Supersolar Wilhelm

Since 2022 · 1–10 empl.·4.8(30)

The company's core activity is the sale of solar products and the consulting of customers in the selection and implementation of solar energy solutions for private and commercial purposes.