Solar & Photovoltaics in
St. Gallen

30 companies in Solar & Photovoltaics based in St. Gallen — name and year of registration from the commercial register. The list below shows them all.

Companies

All 30 companies in St. Gallen

solarmotion ag Logo

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.

Solar & PhotovoltaicsPhotovoltaic systemEnergy storage systemEnergy management
ranQ Trust Score 4.3 out of 5.0, rated Very high, Rank #1
Eco SolarHome GmbH Logo

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.

Solar & PhotovoltaicsPhotovoltaic systemsSolar turnkey systems
ranQ Trust Score 4.3 out of 5.0, rated Very high, Rank #2
St. Gallisch-Appenzellische Kraftwerke AG Logo

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.

Energy SuppliersElectricity supplySolar photovoltaicsHeating solutions
ranQ Trust Score 4.2 out of 5.0, rated Very high, Rank #3
Weibel AG Bedachungen Fassadenbau Logo

Weibel AG Bedachungen Fassadenbau

Since 1978 · 21–50 empl.5.0(2)

The company provides services and products in the field of roof and facade construction, including thermal insulation, energy efficiency, renovation, repair and maintenance of roofs and facades, as well as specialized services such as green roofing, snow retention and snow removal.

RoofingFlat roofPitched roofFacade
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #4
Zillig GmbH Logo

Zillig GmbH

Since 1993 · 11–20 empl.

The core activity of Zillig GmbH is the planning, installation and repair of sanitary facilities, particularly in the area of bathroom renovations, as well as the execution of plumbing work, solar systems and lightning protection systems.

Sheet Metal WorkBathroom renovationsConsulting and planningRepairs
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #5
SN Erneuerbare Energie AG Logo

SN Erneuerbare Energie AG

Since 2012 · 11–20 empl.

The core activity of SN Energie AG is the production, trading and distribution of electricity, including the supply of energy supply companies (EVU) and traders with electricity and heat power network (HKN). This also includes services such as portfolio optimization, asset and participation management, as well as the provision of solutions for balancing energy, quantity tolerance and the documentation of the ecological footprint.

Solar & PhotovoltaicsElectricity market monitorElectricity portfolio managementHKN portfolio management
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #6
Genossenschaft Solar St.Gallen Logo

Genossenschaft Solar St.Gallen

Since 2012 · 11–20 empl.

The core activity of the company 'Genossenschaft Solar St.Gallen' consists of investing in and operating solar power plants for the production of renewable energy. The cooperative enables its members to participate in the production of solar power by purchasing share certificates, thereby offering an opportunity to invest in renewable energy.

Solar & PhotovoltaicsParticipation in photovoltaic installationsConstruction and operation of photovoltaic installationsSubscribing to and holding cooperative shares
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #7
ibee swiss renewable energy investments GmbH Logo

ibee swiss renewable energy investments GmbH

Since 2014 · 11–20 empl.

The core activity of ibee swiss renewable energy investments GmbH is investment, consulting and project development in the field of renewable energies, particularly in solar energy. The company develops, finances and operates photovoltaic systems in Switzerland and internationally, including in Sri Lanka, Burkina Faso and Ghana. It also supports the development of solar irrigation infrastructure and promotes the use of electric vehicles in these countries.

Solar & PhotovoltaicsSustainability consulting for Swiss casinosPhotovoltaic consulting for casino resortsConsulting on green hospitality
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #8
Solventure AG Logo

Solventure AG

Since 2008 · 11–20 empl.

The core activity of Systeme.io is to provide a platform for marketing automation, sales funnel creation, email marketing, website creation, affiliate marketing, and online course creation. The company offers a range of tools and features to support customers in automating their marketing activities, creating sales funnels, managing email campaigns, creating websites, running affiliate marketing campaigns, and creating online courses.

Electrical Planning & Installation
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #9
eenfinity schweiz ag Logo

eenfinity schweiz ag

Since 2022 · 11–20 empl.

The core activity of eenfinity schweiz ag is the holistic development and implementation of renewable energy solutions, including: project planning and development in the field of renewable energies, financing and economic analysis, execution and construction supervision of projects, operation and optimization of plants, and specialized planning in the areas of solar systems, energy storage, e-mobility and sector coupling. The company thus offers a comprehensive range of services to support customers in the development and implementation of renewable energy solutions.

Solar & PhotovoltaicsSpecialist planning for renewable energy solutionsSolar systemsEnergy storage
ranQ Trust Score 4.0 out of 5.0, rated High, Rank #10
Fortis Solar AG Logo

Fortis Solar AG

Since 2021 · 1–10 empl.

The core activity of Fortis Solar AG is the planning, development, construction and operation of industrial photovoltaic systems for companies in Switzerland. They offer services such as project development, construction and execution, contracting and financing, as well as operation and maintenance of solar systems to help companies achieve their sustainability goals and ensure environmentally friendly energy supply.

Solar & PhotovoltaicsProject development & planningConstruction & executionContracting & financing
ranQ Trust Score 4.0 out of 5.0, rated High, Rank #11
Grob AG Gebäudehüllen Logo

Grob AG Gebäudehüllen

Since 1992 · 1–10 empl.5.0(2)

The core activity of Grob AG Gebäudehüllen is the planning, execution and renovation of building envelopes, including conversions and renovations.

Solar & PhotovoltaicsSolar and photovoltaic systemsRoofing workSheet metal roofing and flashings
ranQ Trust Score 3.9 out of 5.0, rated High, Rank #12
Fortis Tech AG Logo

Fortis Tech AG

Since 2023 · 1–10 empl.

Fortis Tech AG provides commercial and industrial photovoltaic systems, developing, designing and delivering large‑scale solar installations for property owners and businesses. Services include project development and design, construction and installation, contracting and financing solutions, and operation and maintenance with monitoring and performance analysis.

Solar & PhotovoltaicsProject development & planningConstruction & executionContracting & financing
ranQ Trust Score 3.9 out of 5.0, rated High, Rank #13
PV-Clean AG Logo

PV-Clean AG

Since 2025 · 1–10 empl.

PV-Clean AG provides professional, material-friendly cleaning for photovoltaic systems. Its services include solar panel cleaning, PV thermography, and the removal of lichen and other persistent deposits.

Testing & Inspection CentersSolar panel cleaningPV thermographyLichen removal from photovoltaic systems
ranQ Trust Score 3.8 out of 5.0, rated High, Rank #14
Lerm Solar AG Logo

Lerm Solar AG

Since 2024 · 1–10 empl.

Lerm Solar GMBH provides consulting, sales, system planning and installation of photovoltaic systems, along with project management and economic feasibility calculations.

Electrical Planning & InstallationSolar consultingSale of solar systemsSolar system design
ranQ Trust Score 3.8 out of 5.0, rated High, Rank #15
PV-Tec GmbH Logo

PV-Tec GmbH

Since 2022 · 11–20 empl.5.0(3)

The core activity of PV-Tec GmbH is the planning, installation and consulting of solar systems and e-mobility solutions for private and commercial customers in Switzerland. This includes the construction of photovoltaic systems on roofs, facades and railings, consulting on energy efficiency and applying for subsidies.

Solar & PhotovoltaicsEnergy efficiency consultingPhotovoltaic systemsE-mobility
ranQ Trust Score 3.8 out of 5.0, rated High, Rank #16
Halo Solar Arikan Logo

Halo Solar Arikan

Since 2026 · 1–10 empl.

Halo Solar Arikan plans and installs photovoltaic systems, battery storage solutions and wallboxes for residential and commercial properties. The company supports projects from 3D roof analysis and quotation through installation, commissioning and assistance with Pronovo processing.

Technical Consulting & EngineeringPhotovoltaic SystemsBattery Storage SystemsWallbox and Smart Charging
ranQ Trust Score 3.3 out of 5.0, rated Basic, Rank #17
EOS Energy Solutions AG Logo

EOS Energy Solutions AG

Since 2015 · 1–10 empl.

EOS Energy Solutions AG plans and integrates large-scale solar thermal projects for industrial processes, including technical and financial structuring. The company provides turn-key solutions based on Fresnel collectors for process heat, steam, and applications such as industrial air conditioning.

Solar & PhotovoltaicsLarge-Scale Solar Thermal ProjectsSolar Thermal Energy for Industrial Processes (SHIP)Solar Thermal Air Conditioning (STAC)
No score yet
Solarpro-Reinigung KLG Logo

Solarpro-Reinigung KLG

Since 2026 · 1–10 empl.

Solarpro-Reinigung KLG provides professional cleaning services for solar panels and photovoltaic systems. Its services also include inspections, efficiency analyses, and maintenance contracts for regular cleaning and upkeep.

Other Service IndustriesSolar Panel CleaningSolar System Inspection and AnalysisSolar System Maintenance Contracts
No score yet
Vacalor Technology GmbH Logo

Vacalor Technology GmbH

Since 2018 · 1–10 empl.

Research & Development
No score yet
SA

swissenergie ag erneuerbare energien

Since 1979 · 1–10 empl.

Technical Consulting & Engineering
No score yet
SI

SOC Invest AG

Since 2006 · 1–10 empl.

Solar & Photovoltaics
No score yet
SG

Sterona GmbH

Since 2009 · 1–10 empl.

Building Construction
No score yet
HI

HX Innovations GmbH

Since 2015 · 1–10 empl.

Solar & Photovoltaics
No score yet
IC

Inceptum Capital AG

Since 2018 · 1–10 empl.

Solar & Photovoltaics
No score yet
GA

green24 ag

Since 2018 · 1–10 empl.

General Contractors
No score yet
SU

Sonne und Strom, N. Weber

Since 2021 · 1–10 empl.

Solar & Photovoltaics
No score yet
GE

GN Energy GmbH

Since 2022 · 1–10 empl.

Energy Suppliers
No score yet
KE

Klein Energie&Fenstertechnik GmbH

Since 2023 · 1–10 empl.

Glaziery
No score yet
KS

Klein Solar

Since 2024 · 1–10 empl.

Solar & Photovoltaics
No score yet

Solar & Photovoltaics in St. Gallen

30Solar & PhotovoltaicsCommercial register (Zefix) · as of October 11, 2026
2018Median year of registrationCommercial register (Zefix) · as of October 11, 2026
298in the Canton of St. GallenCommercial register (Zefix) · as of October 11, 2026
4,041in SwitzerlandCommercial register (Zefix) · as of October 11, 2026
Locations

Solar & Photovoltaics in the region

Point size by number of companies per place.

Source: commercial register (Zefix) · as of October 11, 2026