Solar & Photovoltaics in Sion

Companies

All 14 companies in Sion

Sionic SA

Since 1966

PhotovoltaicsIntercom systemsEmergency and safety

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ENERCO Sàrl

Since 2019

Photovoltaic installationsSelf-consumptionSolar carport

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OIKEN SA

Since 2019

Solar photovoltaicsPhotovoltaicsSelf-consumption community

View profile2.8(53)

Coopérative Autovoltaic-VS

Since 2019

DIY photovoltaic systems

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SUNWELL Sàrl

Since 2020

Planning and dimensioning of alpine solar systemsYield modelling and energy potential analysisOptimisation of PV design and operating control

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Smartsuna SA

Since 2020

Autarkic solar installationConsulting and sizing of solar installationsSolar installation for businesses

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Skywatt SA

Since 2023

Photovoltaic installationSolar batteryCharging stations

View profile5(9)

Evaarist SA

Since 2024

Solar installation for home energy autonomySolar installation for energy autonomy for buildings and businessesBusiness engineering and project owner assistance (AMO)

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Electro-Service Christian Mühlheim

Since 1981

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AS

Alp-Sun SA

Since 2012

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ES

Equisol société coopérative

Since 2012

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EB

ENOIL BIOTECHNOLOGIES SA

Since 2019

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G4

Group 4 Photovoltaics (G4PV) AG

Since 2023

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SS

Swiss Sunshine SA

Since 2024

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Solar & Photovoltaics in Sion

14Solar & PhotovoltaicsCommercial register (Zefix) · as of August 26, 2026

2019Median year of registrationCommercial register (Zefix) · as of August 26, 2026

137in the Canton of ValaisCommercial register (Zefix) · as of August 26, 2026

3,199in SwitzerlandCommercial register (Zefix) · as of August 26, 2026

Locations

Solar & Photovoltaics in the region

Point size by number of companies per place.

Source: commercial register (Zefix) · as of August 26, 2026

Largest places

Martigny9 Sierre5 Saxon5

Place axis

Other industries in Sion

All companies in Sion

Real Estate Project Development338 Restaurants170 Holding Companies143 Real Estate Brokerage141 Property Management119 Architecture Firms100 IT Consulting & Services71 Fiduciary Offices69 Management Consulting56 General Contractors56 Auto Repair Shops54 Technical Consulting & Engineering52 Software Development52 Automotive & Vehicle Trade50 Advertising Agencies46 Hair Salons44 NGOs & NPOs34 Plumbing & Building Services33 Retail - Textiles & Clothing32 Other Service Industries30 Electrical Planning & Installation30 Psychiatry & Psychotherapy30 Facility Management & Cleaning30 Physiotherapy29 Clubs, Bars & Event Venues28 Coaching & Personal Development27 Financial Services27 Logistics & Transport Companies27 Viticulture26 Cultural & Educational Organizations26 Online Shops26 Recruitment & HR Consulting25 Research & Development24 Trade Fair & Event Organizers24 Insurance Brokerage & Consulting24 Printing Companies24 Interior Design & Furnishing23 Painting & Plastering23 Sports & Recreation Instruction23 Dental Clinics23 Hotels23 Continuing Education Institutes22 Civil Engineering Firms21 Wellness & SPA Facilities21 External Asset Management20 Building Construction19 Medical Technology Industry19 Wholesale - Beverages & Spirits19

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Solar & Photovoltaics inSion

All 14 companies in Sion

Solar & Photovoltaics in the region

Solar & Photovoltaics in other places

Other industries in Sion

Solar & Photovoltaics in
Sion