Solar-generating roadways could soon be a reality on roads everywhere, thanks to new technology from Europe. According to Bloomberg, Colas SA, a subsidiary of France’s Bouygues Group has been working on solar panels that are tough enough to handle the load of an 18-wheeler truck – and are currently building them into some French road surfaces, with plans to test the technology across four continents in 2017.

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These panels have already undergone five years of research and laboratory tests, but before they hit the roads in a major way, the company plans to test them further by building 100 outdoor test sites over the next year. “We wanted to find a second life for a road,” Colas SA’s Wattaway Unit chief technology officer told Bloomberg. “Solar farms use land that could otherwise be for agriculture, while the roads are free.”

How does a road made of solar panels withstand the weight of a massive semi truck, you might ask? According to Bloomberg, while the panels are made with ordinary solar cells such as those that might be on your roof, they are layered with several types of plastic on top to create a sturdy casing that can withstand abuse. It has electrical wiring embedded, and is coated with a layer of crushed glass to create an anti-slip surface.

Related: Solar Roadways unveils super strong solar panels for roads in a prototypical parking lot

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Wattaway began testing the new product last month on a kilometer-long site in the French town of Tourouvre. At 2,800 square meters in area, the embedded solar panel array is expected to generate about 280 kilowatts of energy at peak capacity. The company says that’s enough power to provide public lighting for a town of up to 5,000 people for a whole year. They also told Bloomberg they intend to test the technology in Calgary, Canada, Georgia, USA, throughout the European Union, Africa and Asia, with plans to commercialize in 2018.

Add this innovation to Tesla’s solar roof and what Solar Roadways is doing in the U.S., and it’s been a good year for unconventional applications of solar power.

Via Bloomberg

Images via Wattaway