Switzerland Tests Solar Panels Between Railway Tracks

What if the world could generate clean energy without using a single extra acre of land?

A Swiss company called Sun-Ways just proved it's possible. They've spent the past year testing a simple but brilliant idea: installing solar panels in the empty space between railway tracks.

The pilot program started in April 2025 near the village of Buttes, Switzerland. Forty-eight solar panels were laid flat between the rails along 100 meters of track, carefully designed so trains could safely pass overhead.

The results exceeded expectations. The installation generated over 16,000 kilowatt-hours of electricity in its first year, enough to power three to four Swiss homes. More than 11,000 trains crossed the panels at speeds up to 70 kilometers per hour without any issues.

The panels survived every challenge thrown at them. Early worries about dust and debris disappeared when engineers discovered that passing trains created enough airflow to keep the panels clean naturally. When railway maintenance is needed, a three-panel section can be removed in just 10 minutes.

Now the technology is going global. Italy signed a deal to start its own pilot program. South Korea is planning installations. France's national railway announced it will study the Swiss results, and countries from Canada to China have expressed interest.

The Ripple Effect

The potential scale is staggering. If Switzerland covered its entire 5,320-kilometer rail network with these panels, the country could generate 1 terawatt-hour of electricity annually. That's enough to power 300,000 homes and represents 2% of Switzerland's total energy needs.

Countries with sunnier climates could produce even more. Italy, southern France, and other regions with higher solar exposure might see better results than cloudy Switzerland achieved in its first year.

The technology works because it uses infrastructure that already exists. No farmland needs converting. No forests need clearing. Just empty space between rails that's been sitting unused for centuries.

Sun-Ways developed a special railway machine that can eventually deploy 300 meters of panels per hour, making large-scale installations realistic. Each panel is coated with anti-reflective material to prevent glare that could distract train operators.

The electricity won't power the trains themselves yet, though that could come later. For now, it feeds into national grids, helping countries meet clean energy goals without sacrificing land for traditional solar farms.

Switzerland's national railway already runs on 100% renewable energy from hydro, wind, and solar sources. This technology could help other countries reach similar milestones faster.

The pilot runs until April 2028, but the wheels are already in motion for a cleaner future built on the tracks we've already laid.