Switzerland's Solar Railway Expands After 1-Year Success

Imagine if every train track in your country could power homes while trains rolled right over it. Switzerland just proved it works.

Last year, startup Sun-Ways installed 48 solar panels between active railway tracks in Buttes, a small Swiss village. The panels lay flat on the ground, generating electricity while trains passed overhead. The company planned to test them for three years, but the results came in so strong after just one year that they're making it permanent.

The 100-meter stretch produced 16,000 kilowatt hours of electricity in its first year. That's enough to power an average home for 12 months. Better yet, the panels needed zero special maintenance and worked perfectly despite trains constantly rumbling overhead.

Sun-Ways tackled safety concerns head-on. They built panels tougher than rooftop versions, added anti-reflection filters so they wouldn't distract train drivers, and installed sensors to monitor performance. They even attached brushes to trains to sweep dirt off the panels.

The panels do lose about 10 percent efficiency because they lie flat instead of tilting toward the sun. But the trade-off makes sense when you consider the scale. Switzerland has 5,317 kilometers of railway track. Covering all of it could generate one terawatt hour of electricity yearly, meeting two percent of the country's total energy needs.

The Ripple Effect

Italy is already moving forward. Sun-Ways just signed a partnership with an Italian company connected to the country's national railway system. They're launching a pilot project in the coming months.

South Korea approved plans for its own solar railway. Companies in the Netherlands, China, India, and Singapore are in talks to follow. What started as a 100-meter experiment in a Swiss village could transform railways across three continents.

The company is working on feeding the electricity directly into railway substations and train power lines instead of just the general grid. That means trains could eventually run on solar power generated by their own tracks.

Railway networks crisscross every continent, covering millions of kilometers of land that just sits there between trains. This technology turns all that unused space into clean energy without taking up a single extra inch of ground.