Sun-Ways Rail Solar Pilot Withstands 11,000 Trains in 14 Months, Drawing SNCF and Italy Interest
Updated
Updated · autonocion.com · Jul 3
Sun-Ways Rail Solar Pilot Withstands 11,000 Trains in 14 Months, Drawing SNCF and Italy Interest
3 articles · Updated · autonocion.com · Jul 3
Summary
More than 11,000 trains have passed over Sun-Ways’ 100-meter rail solar test in Buttes since April 2025, with operator TransN reporting the panels remained stable and safe.
The 48-panel, 18-kW installation has fed over 16,000 kWh into the local grid since May 2025 despite about a month offline for snow and planned technical work.
TransN said the system has not interfered with infrastructure, maintenance or train traffic, and no driver has reported glare after Sun-Ways added tougher panel construction and anti-reflective coating.
Sun-Ways says crews can remove a three-panel module in about 10 minutes, while a dedicated machine can install up to 150 panels an hour; passing trains also proved enough to keep panels clean.
That operating record is attracting expansion talks: SNCF signed a cooperation deal in February through April 2028, Italy’s rail manager is discussing a pilot this year, and South Korea has already approved one.
With a crucial solution expected next month, can solar railways move beyond a pilot project to power entire nations?
If solar railways are so promising, what hidden challenges are preventing their widespread global adoption?
Railway Solar Revolution: Lessons from Switzerland’s 18 kWp Sun-Ways Pilot and the Path to 1 TWh Clean Energy
Overview
The Sun-Ways railway solar project in Switzerland is making strong progress, with a three-year pilot launched near Buttes station in 2025. This innovative project installs 48 solar panels along a 100-meter stretch of active railway, each with a capacity of 380 W, totaling 18 kWp. The system is expected to generate 16,000 kWh of electricity annually, feeding power into the grid. The pilot’s real-world testing on an active line sets a benchmark for future expansion, attracting international interest and providing valuable data for scaling solar technology across railway networks.