Switzerland has installed the world's first railway solar plant, and after a year of operation, it has proven to be a resounding success. The project, located in the town of Buttes in the canton of Neuchâtel, has demonstrated that solar electricity can be generated directly beneath train wheels without any risk.
What Happened: The First Railway Solar Plant
In April 2025, startup Sun-Ways installed photovoltaic panels between the rails of a 100-meter section of track in Buttes, Switzerland. The panels are mounted on the railway ties and can be easily removed for maintenance work. This is the first installation of its kind in the world, according to the company.
Twelve months later, more than 11,000 trains have passed over the panels without any incidents. "We have achieved our goals, both in terms of railway safety and electricity production," Joseph Scuderi, founder of Sun-Ways, told Swissinfo.

Why It Matters: Space Constraints for Renewables
The main obstacle for renewable energy is no longer just technological but spatial. Finding land for solar panels without encroaching on farmland, forests, or protected landscapes is becoming increasingly difficult. Spain knows this debate well, with projects like the Maestrazgo renewable macro-park generating friction due to its visual impact.
Railway solar plants offer a solution by utilizing existing infrastructure corridors. They avoid land-use conflicts and bring energy production closer to consumption points, reducing transmission losses.
How Railway Solar Panels Work
The panels are designed to fit between the rails and are supported by the ties. They are robust enough to withstand the weight and vibration of passing trains, and they can be quickly removed for track maintenance. The electricity generated can be fed into the railway's own power network or the local grid.
Sun-Ways claims that the system is scalable and could be deployed on thousands of kilometers of track worldwide. The success of the pilot project has already sparked interest from France, Italy, and Asia. The background to this story is set out in Home Renewable Energy: Solar Panels & Heat Pumps Surge in 2025. A related thread runs through Renewable Energy Home Installations: Solar Panels & Heat Pumps. Earlier coverage in Heat Pumps and Solar Panels: Affordable Clean Energy Solutions shows how the argument developed.
Key Takeaways
- World's first: Sun-Ways installed the first railway solar plant in Switzerland in April 2025.
- Proven safety: Over 11,000 trains passed over the panels in a year with no incidents.
- Space-efficient: The system uses existing railway corridors, avoiding land-use conflicts.
- Easy maintenance: Panels can be removed quickly for track repairs.
- Global interest: France, Italy, and Asian countries are exploring similar projects.
Comparison with Traditional Solar Farms
| Aspect | Railway Solar Plant | Traditional Solar Farm |
|---|---|---|
| Land use | Uses existing railway corridors | Requires large land areas |
| Visual impact | Minimal, integrated into infrastructure | Often visible in landscapes |
| Maintenance | Panels removable for track work | Standard maintenance |
| Proximity to consumption | Close to urban centers and rail networks | Often remote |
| Scalability | Can be deployed on extensive rail networks | Limited by available land |
What to Watch Next
The success of the pilot in Buttes is likely to accelerate the adoption of railway solar technology. Sun-Ways is reportedly in talks with several countries to deploy the system on a larger scale. If widely adopted, this could significantly contribute to renewable energy targets without competing for land. A closer look at the same subject appears in Solar Power for Business: How Companies Beat Energy Hikes. Anyone following the wider picture can start with Solar Panels UK: Record Installations as Energy Bills Soar. The same theme surfaces in Solar Panels Cut Energy Bills by £400 in Cloudy UK, which takes a different angle.
However, challenges remain, including the cost of installation and the need for standardized maintenance procedures. The company is also exploring ways to improve panel efficiency and durability. Context on how this played out before sits in The Barcelona Watch Experience, a resounding success. A companion piece, Australia's Free Solar Power Hours: Lessons for Spain's Energy Market, approaches the same subject from another angle.
FAQ
How do railway solar panels withstand train traffic?
The panels are designed to be robust and are mounted between the rails on the ties. They are engineered to bear the weight and vibration of trains, and the pilot project has demonstrated their safety over a year of operation.
Can the panels be removed for track maintenance?
Yes, one of the key features of the Sun-Ways system is that the panels can be easily removed when maintenance work is required on the track. This ensures that railway operations are not disrupted.
What countries are interested in this technology?
Following the successful pilot, France, Italy, and several Asian countries have expressed interest in implementing railway solar plants. Sun-Ways is in discussions to deploy the system internationally.
How much electricity can a railway solar plant generate?
The pilot in Buttes is a 100-meter test section, and specific output figures have not been disclosed. However, the company reports that production goals were met, and the system is scalable to generate significant electricity on longer tracks.