Solar Roadways Prove Expensive and Inefficient

September 25, 2018

Solar photovoltaic technology is getting cheaper, more efficient and more resilient all the time. But it still doesn’t make a good replacement for asphalt.

After years of trial projects, a handful of “solar roadway” projects around the world are revealing just how expensive it is to use roads, rather than rooftops and empty fields, as the world’s future solar surface.

While the concept quickly gained broad public support — and funding — most energy experts were skeptical of the solar roadways from the start. Ars Technica first reported this week on the challenges facing this “oddly popular idea.”

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