Photovoltaics in
Sion

Coopérative Autovoltaic-VS

Since 2019 · 1–10 empl.

Coopérative Autovoltaic-VS is a cooperative that promotes photovoltaics and renewable energy in Valais. Members build photovoltaic systems together under the guidance of an experienced site manager and support one another by exchanging work hours.

Smartsuna SA

Since 2020 · 1–10 empl.

Smartsuna SA advises on and designs self-sufficient solar installations for homes, businesses and residential property owners. The systems combine solar panels and battery storage to generate, store and manage solar electricity.

SUNWELL Sàrl

Since 2020 · 1–10 empl.

SUNWELL Sàrl supports the planning and design of photovoltaic installations, particularly in alpine environments. Its services include site selection, energy-yield calculations, snow and wind load analysis, and monitoring systems.

Skywatt SA

Since 2023 · 1–10 empl.·5.0(9)

The core activity of Skywatt SA is the planning, installation and maintenance of solar systems, including photovoltaic systems, battery storage and charging stations for electric vehicles. The company also offers comprehensive services such as coordinating permit procedures, performing inspections and maintenance, and developing customized solutions for the energy transition.

Sionic SA

Since 1966 · 11–20 empl.·3.0(2)

Sionic SA plans and installs emergency and safety lighting, smoke ventilation, public address and evacuation systems, intercoms, and photovoltaic systems. It also provides technical maintenance and support for these installations.

Evaarist SA

Since 2024 · 1–10 empl.

Evaarist SA is an engineering consultancy that plans and delivers renewable energy installations with energy storage. It supports projects from preliminary studies and design through implementation and commissioning, and also provides project management and client-side project assistance.

OIKEN SA

Since 2019 · 101–500 empl.·2.8(71)

OIKEN SA supplies electricity to households, businesses and municipalities and operates and develops energy distribution networks. Its services also include photovoltaic, heating and electric mobility solutions, energy advice, efficiency assessments and multimedia services.

ENERCO Sàrl

Since 2019 · 1–10 empl.·5.0(1)

ENERCO Sàrl plans and installs photovoltaic systems for private, commercial and public-sector customers. Its services include advice on self-consumption, solar carports, electric-vehicle charging and e-mobility projects.

Bucheli Energy Solutions

Since 2025 · 1–10 empl.

Bucheli Energy Solutions provides engineering and consulting services for electric mobility and the integration of renewable energy. Its services include assessing energy needs, planning charging infrastructure, and developing energy concepts involving, among other things, photovoltaics, batteries, heat pumps, and self-consumption solutions.

Electro-Service Christian Mühlheim

Since 1981 · 1–10 empl.

Alp-Sun SA

Since 2012 · 1–10 empl.

Equisol société coopérative

Since 2012 · 1–10 empl.