Photovoltaics in the
Canton of St. Gallen

Keller Gebäudetechnik GmbH

Since 2016 · 1–10 empl.·5.0(28)

Keller Gebäudetechnik GmbH plans, installs and maintains heating systems, providing consultation and solutions for new buildings and renovations. Its services include ground-source and air-to-water heat pumps, wood, gas and oil heating, dual-source heating systems, thermal solar systems and heat distribution; the company also works in ventilation and solar energy.

SAK onergy AG

Since 2022 · 21–50 empl.·5.0(24)

SAK onergy AG is an energy services provider for photovoltaic systems, battery storage, heat pumps and EV charging stations. It advises on, plans, installs and services energy systems, and offers energy management, energy communities and solutions for integrating flexible systems.

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.

JUD ENERGIE AG

Since 2019 · 1–10 empl.·5.0(22)

JUD ENERGIE AG provides energy consulting, photovoltaic and building contaminant diagnostic services. Its services include energy assessments and certifications, photovoltaic systems and electricity storage, as well as building screenings, sampling and contaminant reports.

Vetsch Gebäudehüllen AG

Since 1983 · 1–10 empl.·4.7(19)

Vetsch Gebäudehüllen AG carries out building-envelope work and provides advice and planning for roofs, façades and energy-related projects. Its services include pitched and flat roofs, façade systems, photovoltaic installations, maintenance and repairs.

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.

solarmotion ag

Since 2015 · 21–50 empl.·4.5(17)

solarmotion ag provides consulting, planning and construction services for photovoltaic systems. Its services also include maintenance, energy storage, energy management, electric mobility solutions and roof-leasing models.

Eco SolarHome GmbH

Since 2021 · 1–10 empl.·4.8(59)

Eco SolarHome GmbH plans and installs photovoltaic systems for residential and business customers, either as turnkey projects or for self-build. Its services include advice and project support, and its online shop sells solar panels, inverters, storage systems and related equipment.

Elektro Peter AG

Since 2018 · 21–50 empl.·4.6(46)

Elektro Peter AG plans and installs electrical systems for residential and commercial customers. Its services include electrical planning, communications and network technology, multimedia, smart-home and security solutions, as well as photovoltaics, battery storage, e-mobility and other building services.

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.

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.

Eberhard Sanitär GmbH

Since 2002 · 1–10 empl.·5.0(10)

Eberhard Sanitär GmbH plans and installs plumbing systems for new buildings and renovations, and provides maintenance, repairs, and water and wastewater pipework. Its services also include water softening and descaling, solar systems, central vacuum systems, and smaller heating jobs.

Dach Walser AG

Since 1990 · 1–10 empl.·5.0(11)

Dach Walser AG works on building envelopes, carrying out roof and flat-roof work, sheet-metal work and façade construction. Its services also include photovoltaic systems, lightning and flood protection, roof windows, maintenance and repairs.

aws solar ag

Since 2012 · 11–20 empl.·4.9(8)

aws solar ag plans and installs photovoltaic systems for homes, businesses and agricultural operations. Its services include consultation, project management, maintenance and servicing, as well as drone surveys and thermal inspections of solar installations.

Hüppi Dachbau AG

Since 2017 · 11–20 empl.·4.6(23)

Hüppi Dachbau AG carries out roofing and building-envelope work. Its services include pitched and flat roofs, façade cladding, sheet-metal work, waterproofing, scaffolding and crane work, and photovoltaic systems.

Hans Wittenwiler AG

Since 1995 · 1–10 empl.·4.7(15)

Hans Wittenwiler AG advises on, plans and installs heating systems. Its work also includes renewable heating technologies such as wood-fired systems, heat pumps and solar installations.

SolarTec Rheintal GmbH

Since 1999 · 1–10 empl.·5.0(11)

SolarTec Rheintal GmbH plans and installs photovoltaic systems for buildings of different types and sizes. Its services include advice, sales of photovoltaic components, installation, maintenance, energy storage solutions and energy optimisation.

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.

Elektro Nüesch AG

Since 1975 · 1–10 empl.·4.7(14)

Elektro Nüesch AG carries out electrical installations in high- and low-current systems for private customers, industry, businesses and public-sector clients. Its services include electrical planning, telephone and network installations, photovoltaic AC connections, cable and power-grid construction, repairs, and the sale and installation of household appliances.

W. Bissegger AG Wil

Since 1984 · 11–20 empl.·4.8(5)

W. Bissegger AG Wil plans, installs, renovates and maintains heating, ventilation and plumbing systems. Its services include heat pumps, solar installations, ventilation systems and plumbing installations.

Lampert + Walker AG

Since 1991 · 11–20 empl.·4.8(12)

Lampert + Walker AG plans, installs and maintains heating and cooling systems for buildings. Its services and products include heat pumps, district heating, natural gas and biogas systems, wood heating and solar installations, as well as consultation and servicing.

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 operates a specialist business for roofing, sheet-metal work and plumbing.

Elektro Kleiner AG

Since 2002 · 11–20 empl.·5.0(4)

Elektro Kleiner AG plans and installs electrical systems for homes, businesses and industry. Its services include high- and low-voltage installations, building automation, telecommunications and security systems, as well as photovoltaic systems, project planning, maintenance and repairs.

John Heizung + Sanitär AG

Since 2007 · 1–10 empl.·4.8(10)

John Heizung + Sanitär AG carries out heating and plumbing work. Its services include consulting, planning and installation of heating systems, including heat pumps, as well as new builds, renovations, repairs and maintenance of heating and plumbing 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.

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.

Dürr Haustechnik AG

Since 1971 · 1–10 empl.·4.8(8)

Dürr Haustechnik AG provides heating and plumbing services as well as sheet-metal work for buildings. Its activities include planning, installation, maintenance and repair of heating systems and heat pumps, bathroom renovations, flat-roof sealing, solar installations and lightning protection.

B. Stillhart Dach + Fassaden + Solar AG

Since 2007 · 21–50 empl.·4.6(7)

B. Stillhart Dach + Fassaden + Solar AG specialises in building envelope work. Its services include the construction and renovation of pitched and flat roofs, façade and sheet-metal work, building maintenance, and advice on and installation of solar and photovoltaic systems.

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.

Marquart Dächer Fassadenbau AG

Since 2008 · 11–20 empl.·5.0(4)

Marquart Dächer Fassadenbau AG constructs pitched and flat roofs and façades, and carries out insulation work. Its services also include roof windows, roof maintenance, energy consulting, photovoltaic systems and crane work.

Hurni Heizungen GmbH

Since 2012 · 1–10 empl.·5.0(12)

Hurni Heizungen GmbH plans and installs heating and ventilation systems for new and renovated buildings. Its services include energy consulting and maintenance of heating systems, burners, boilers, solar installations and geothermal probes.

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.

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.

St. Gallisch-Appenzellische Kraftwerke AG

Since 2009 · 101–500 empl.·3.9(7)

St. Gallisch-Appenzellische Kraftwerke AG supplies electricity and operates facilities for power and heat generation, as well as energy and fibre-optic networks. Its services also include photovoltaics, heat pumps, e-mobility solutions, and internet, telephone and TV services.

Solarform AG

Since 2022 · 1–10 empl.·5.0(12)

Solarform AG provides consulting, planning and installation services for photovoltaic systems for residential and commercial customers. Its services include rooftop, façade and balcony installations, as well as solar-panel cleaning.

G & O sunsolutions GmbH

Since 2011 · 1–10 empl.·4.3(6)

G & O sunsolutions GmbH advises on solar technology and plans, installs and maintains photovoltaic systems for roofs, façades and open spaces. Its services also include energy management, battery storage, e-mobility, roof renovation and solar panel cleaning.

DREXEL Group AG

Since 2024 · 11–20 empl.·5.0(13)

DREXEL Group AG plans and installs photovoltaic systems for residential and commercial buildings and supplies battery storage and heat pumps. Its real estate activities include acquiring, developing and renovating properties, as well as project development, client representation during construction and property marketing.