The idea of solar power generation on railways is an innovative and ambitious project, and it seems to be a success so far. The installation of 48 solar panels on a 100-meter section of a railway line in Buttes, Switzerland, has generated more than 19 MWh of energy since its inauguration in April 2025. This project, led by Sun-Ways, a company specializing in solar energy, has faced regulatory challenges rather than technical ones, according to CEO Joseph Scuderi. The strict safety requirements in the rail sector have made it difficult to obtain authorization for testing and installation. However, the company has now developed a machine capable of installing up to 300 solar panels per hour, over hundreds of kilometers, which is a significant advancement. The solar panels are designed to avoid distractions for train drivers and are resistant to micro-cracks, ensuring safety and efficiency. The potential for solar power generation on railways is vast, with Sun-Ways estimating a potential of 1 TWh in Switzerland alone, which could meet 30 percent of the country's public transport needs. The project has also attracted interest from other countries, with agreements made with Italy and France's SNCF, and talks underway with South Korea, Spain, and Portugal. The financial projections for this technology are promising, with a Levelized Cost of Energy (LCOE) ranging from 0.05 €/kWh to 0.09 €/kWh, depending on sunlight availability. This makes solar railways an attractive and sustainable solution for the transportation sector. However, the challenge now lies in scaling up the project and addressing the concerns of maintaining the panels and ensuring a clean environment for optimal power generation. Despite the initial excitement surrounding solar roadways, solar railways appear to be a more practical and successful approach to harnessing solar energy. The next step is to continue developing and implementing this technology on a larger scale, which could significantly contribute to the renewable energy goals of the European Union and other countries.
