Energy Suppliers in Sion

Companies

All 9 companies in Sion

Grande Dixence SA

Since 1950

Hydropower generationOperation of hydropower facilitiesHydropower extension projects (Gornerli)

View profile4.8(25)

FMV SA

Since 1991

Hydropower generationTransmission and operation of the high-voltage gridElectricity marketing

View profile5(1)

HYDRO Exploitation SA

Since 2002

Operation and maintenance of hydroelectric facilitiesEngineering for refurbishment and renewal of power plantsCommissioning coordination

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Valgrid SA

Since 2005

Electricity transmission on the 65 kV gridOperation and management of the 65 kV grid

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Altis Management Sàrl

Since 2026

Electricity network and supply

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Forces Motrices de Mauvoisin SA

Since 1947

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SS

Sogaval SA

Since 1931

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AA

Alp-Hydro AG

Since 1998

View profile4.7(6)

GC

GDL Consulting Sàrl

Since 2026

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Energy Suppliers in Sion

9Energy SuppliersCommercial register (Zefix) · as of September 26, 2026

1998Median year of registrationCommercial register (Zefix) · as of September 26, 2026

103in the Canton of ValaisCommercial register (Zefix) · as of September 26, 2026

1,553in SwitzerlandCommercial register (Zefix) · as of September 26, 2026

Locations

Energy Suppliers in the region

Point size by number of companies per place.

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

Largest places

Martigny6 Visp5

Place axis

Other industries in Sion

All companies in Sion

Real Estate Project Development381 Holding Companies321 Property Management212 Restaurants206 Real Estate Brokerage200 Architecture Firms116 IT Consulting & Services97 Management Consulting93 Fiduciary Offices79 Technical Consulting & Engineering78 Software Development74 General Contractors66 Advertising Agencies66 Automotive & Vehicle Trade59 Auto Repair Shops57 NGOs & NPOs54 Trade Fair & Event Organizers51 Hair Salons49 Financial Services42 Facility Management & Cleaning41 Other Service Industries40 Clubs, Bars & Event Venues40 Research & Development39 Coaching & Personal Development38 Plumbing & Building Services38 Building Maintenance36 Retail - Textiles & Clothing36 Electrical Planning & Installation35 Cultural & Educational Organizations35 Psychiatry & Psychotherapy35 Online Shops35 Construction & Project Management34 Logistics & Transport Companies34 Physiotherapy33 Recruitment & HR Consulting30 Continuing Education Institutes30 Insurance Brokerage & Consulting29 Medical Technology Industry29 Administrative Services28 Building Construction28 Painting & Plastering28 Retail - Food & Luxury Items28 Interior Design & Furnishing27 Sports & Recreation Instruction27 External Asset Management27 Viticulture26 Wholesale - General Specialty Trade26 Hotels26

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Energy Suppliers inSion

All 9 companies in Sion

Energy Suppliers in the region

Energy Suppliers in other places

Other industries in Sion

Energy Suppliers in
Sion