Espace Weisshorn Mountain Station in Zinal (VS), Switzerland

A total of 381 3S solar modules were installed for the building-integrated solar facade. The modules were installed in four different sizes to ensure optimal use of space and maximum solar power production:

• 178 size L modules

• 105 modules of size Q

• 78 size M modules

• 20 size S modules

This flexible module layout allows for seamless integration into the building and blends in perfectly with its design. The black, frameless glass-glass modules are exceptionally durable and designed to withstand the extreme weather conditions found in high-altitude mountain regions. The location at an altitude of 2,700 meters ensures high levels of insolation, which further increases the energy efficiency of the photovoltaic modules.

The total area of the BIPV facade is 383.25 m². With a total capacity of 64.78 kWp, the system makes a significant contribution to the mountain station’s energy supply.

The BIPV facade is part of a comprehensive energy concept designed to reduce the mountain station’s energy consumption through the use of renewable energy. In addition to the photovoltaic system, a smart heat recovery system has been integrated. This system uses waste heat from technical equipment to heat the station and helps improve efficiency. The solar project was implemented in collaboration with our specialist partner Electro-Sol SA. Careful planning and installation ensure that the system operates reliably even under extreme weather conditions.

With its BIPV solar facade, the Espace Weisshorn demonstrates that a building-integrated photovoltaic system can be successfully implemented even in challenging high-altitude mountain locations. The combination of modern architecture, innovative photovoltaic technologies, and a well-thought-out energy concept makes the Espace Weisshorn a model for sustainable construction projects in the mountains. The facility demonstrates how renewable energy can be strategically utilized to reduce environmental impact and create a sustainable mountain infrastructure.

Espace Weisshorn was created as a joint project between Espace Weisshorn SA, the Sorebois Alpine Cooperative, and the Grimentz-Zinal Mountain Railways. It embodies regional traditions, culture, and seasonal cuisine through a sustainable approach. Planning began in 2021 in collaboration with JBC Architectes SIA, Kevin Epiney Architecte EPFL, and Didier de Courten (DdC Consulting). The concept is based on three core principles: intelligence, elegance, and innovation, combined with sustainability and a connection to the local community.