Solar & Photovoltaics in
Olten

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

Companies

All 6 companies in Olten

Markus Aregger Bedachungen und Spenglerei

Since 2011

Sheet metal workPitched roofsFlat roofs

View profile5(2)

TRIENERGY Solutions AG

Since 2023

Mounting systemsPV storageSolar modules

View profile5(3)

DD Solar GmbH

Since 2023

Solar systemsEnergy storageEV charging stations

View profile5(13)

Konzept E AG

Since 2023

Solar PV potential analysis and feasibility conceptsPlanning and development of energy projectsAdvisory for self-consumption communities and local energy communities

SunTechnics Fabrisolar AG

Since 2024

Hansesun Photovoltaik Swiss GmbH

Since 2025

Solar & Photovoltaics in Olten

6Solar & PhotovoltaicsCommercial register (Zefix) · as of September 26, 2026

2023Median year of registrationCommercial register (Zefix) · as of September 26, 2026

121in the Canton of SolothurnCommercial register (Zefix) · as of September 26, 2026

3,940in SwitzerlandCommercial register (Zefix) · as of September 26, 2026

Locations

Solar & Photovoltaics in the region

Point size by number of companies per place.

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

Largest places

Solothurn14 Deitingen8 Lohn-Ammannsegg6 Grenchen5

Place axis

Other industries in Olten

All companies in Olten

Property Management110 Restaurants84 Holding Companies79 Management Consulting67 Real Estate Brokerage60 IT Consulting & Services52 Technical Consulting & Engineering46 Software Development44 Real Estate Project Development44 Architecture Firms43 Hair Salons36 Fiduciary Offices36 Advertising Agencies35 Coaching & Personal Development34 Facility Management & Cleaning31 Recruitment & HR Consulting30 Automotive & Vehicle Trade26 Beauty Salons25 General Contractors23 Retail - Textiles & Clothing23 Online Shops22 Construction & Project Management21 Catering20 Trade Fair & Event Organizers19 Retail - Food & Luxury Items19 Cultural & Educational Organizations18 Other Service Industries16 Auto Repair Shops16 NGOs & NPOs15 Continuing Education Institutes15 Electrical Planning & Installation14 Financial Services14 Wholesale - General Specialty Trade14 Clubs, Bars & Event Venues14 Professional & Trade Associations13 Law Firms & Notary Offices13 Painting & Plastering13 Insurance Brokerage & Consulting13 Non-Medical Healthcare Professions12 Physiotherapy12 Psychiatry & Psychotherapy12 Retail - General Specialty Trade12 Logistics & Transport Companies12 Mechanical Engineering Industry11 Interior Construction10 Wholesale - Beverages & Spirits10 Photography9 Research & Development9

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