Sun-Ways Completes Swiss Pilot With 11000 Train Passages

SWITZERLAND – Swiss startup Sun-Ways has validated its photovoltaic rail system in a pilot project that withstood more than 11,000 train passages without safety incidents or panel displacement. The installation, carried out using specialized machinery from Scheuchzer AG, tested the compatibility of between-rail solar panels with conventional train operations under controlled real-world conditions in 2025.

What Are the Technical Specifications?

The Sun-Ways system consists of interconnected photovoltaic panels patented specifically for installation between standard-gauge railway tracks, deployed by a Scheuchzer AG machine capable of laying 300 meters of panels per hour — equivalent to over 500 panels per day. The panels feed generated electricity into the grid, supplying train stations, terminals, or other railway facilities, and can theoretically power train operations depending on grid configuration. No maximum power output per kilometer was publicly disclosed by the company at this stage. The panels are designed to sit flush between rails without obstructing wheel passage or signaling systems.

Key Technical Data

Where Does This Technology Stand in the Market?

Sun-Ways enters a niche but growing segment of rail-integrated solar. Bankset Energy, a German-Swiss competitor, has deployed between-rail solar panels on test sections in Germany, claiming approximately 0.1 MW generation capacity per kilometer of track (Source: Bankset Energy, 2023). Italy’s Greenrail takes a different approach — embedding photovoltaic cells directly into railway sleepers rather than placing panels between rails — reporting up to 35 MWh per kilometer annually from its solar sleeper system (Source: Greenrail, 2022). Unlike Greenrail’s solution, which requires replacing existing sleepers, Sun-Ways retrofits onto existing track infrastructure without altering the track bed. A separate parallel development involves Deutsche Bahn and RWE installing conventional solar arrays alongside rail corridors rather than between tracks, a configuration that avoids direct train-panel interaction entirely but requires adjacent land access. Sun-Ways’ between-rail placement eliminates land-use conflict entirely — the core differentiator — but introduces unresolved questions about debris accumulation, snow clearance in Alpine conditions, and long-term vibration fatigue that none of the competing approaches has fully addressed at commercial scale. Comparable data on installation cost per kilometer versus Bankset Energy or Greenrail was not publicly available at time of publication.

Editor’s Analysis

The Sun-Ways pilot lands at a moment when rail operators face simultaneous pressure to decarbonize operations and monetize existing assets. Switzerland’s 2025 high-speed rail investment trend prioritizes infrastructure modernization and advanced technology integration — a policy environment that creates natural tailwinds for dual-use rail-energy concepts (Source: Construction Dive, 2025). Cross-referencing this with the broader freight rail picture, where technology adoption is identified as one of four key growth pillars alongside intermodal volume that reached 14.06 million units in 2025 — the second-highest annual total on record — the potential addressable market spans far beyond passenger corridors into high-volume freight networks (Source: Logistics Management, 2025). The unanswered question is whether between-rail solar can scale economically given the maintenance access constraints and weather exposure that a Swiss winter represents. If Sun-Ways can deliver cost-per-kilowatt figures competitive with rooftop solar while proving track maintenance crews can work around the panels without added downtime, rail networks facing electrification mandates may view this as a faster permitting pathway than ground-mount solar farms.

FAQ

Q: How much electricity can the Sun-Ways rail solar system generate?
A: Sun-Ways has not publicly disclosed specific power output figures from the Swiss pilot. Competitor Bankset Energy estimates approximately 0.1 MW per kilometer for a similar between-rail configuration, though actual output depends on panel efficiency, orientation, and local solar irradiance.

Q: Does installing panels between rails block track maintenance access?
A: According to Sun-Ways founder Joseph Scuderi, the panels are designed to be compatible with normal railway operations, but the company has not yet published detailed protocols for how tamping, rail grinding, or ballast replacement would be performed with panels in place. This remains an open question flagged for larger-scale testing.

Q: When could this technology appear on commercial rail networks?
A: No commercial deployment timeline has been announced. Sun-Ways has stated that larger-scale testing is required before the system can become a standard option, and key variables — including performance under severe weather, panel cleaning logistics, and compatibility with varied infrastructure types — have not yet been validated outside the controlled pilot.