Swiss Startup Sun-Ways Tests Solar Panels on Railway Line with SNCF
The vast, sun-exposed corridors of railway networks have long represented an untapped resource for renewable energy generation. Now, a pioneering collaboration between Swiss startup Sun-Ways and French national railway operator SNCF is turning this potential into reality, testing an innovative system that installs solar panels directly between the rails of an active train line.
A Groundbreaking Pilot Project for Solar railway panels
In a significant step forward for green transportation infrastructure, Sun-Ways has launched a pilot project in Buttes, located in the Swiss canton of Neuchâtel. This initiative, undertaken in partnership with SNCF, marks the first time solar panels have been deployed on an operational railway line without causing any disruption to train services.
The partnership was solidified through an agreement signed at the end of 2025, granting SNCF partner status in this cutting-edge trial. The project leverages a unique and ingenious technology developed by Sun-Ways. Instead of a cumbersome, manual installation, the solar panels are designed to be mechanically deployed and retracted using a specialized train. This process has been likened to rolling out a carpet, allowing for swift installation and easy removal for maintenance.
The Technology and Its Potential for Solar railway panels
The core innovation lies in the system’s ability to integrate seamlessly with existing railway operations. By using a custom train for both installation and maintenance, Sun-Ways bypasses the logistical hurdles that have previously prevented the large-scale use of railway land for solar power.
This cross-sector innovation between the rail and photovoltaic industries aims to unlock the immense potential of the thousands of kilometers of track that crisscross countries. If proven successful and scalable, this technology could transform railway networks into massive, decentralized power plants, generating clean energy to power the trains themselves, nearby stations, or feed into the national grid.
Looking Ahead at a Greener Future for Rail with Solar railway panels
While specific details regarding the pilot project’s power output and duration have not yet been released, its primary goal is to demonstrate the system’s feasibility and scalability. The trial in Buttes is being closely watched by railway operators globally, who see it as a potential blueprint for their own decarbonization efforts.
The collaboration between Sun-Ways and SNCF is more than just a test of new hardware; it’s a powerful example of the forward-thinking solutions needed to meet ambitious climate goals. By reimagining the very ground beneath the tracks, this project could pave the way for a future where our transportation systems not only move people but also power our communities. The results from this Swiss pilot will be crucial in determining the next steps for rolling out solar railways on a global scale.
