Solar roads were promised to be one of the biggest unprecedented revolutions of our time, not just in the field of renewable energy but in the energy sector generally. Covering 2,800 square meters, Normandy's solar road was the first in the world, inaugurated in 2016, in Tourouvre-au-Perche, France. Despite the hype surrounding solar roads, two years after this one was introduced as a trial, the project has turned out to be a colossal failure — it's neither efficient nor profitable, according to a report by Le Monde.

The road has deteriorated to a terrible state, it isn't producing anywhere near the amount of energy it had previously pledged to, and the traffic it has brought with it is causing noise problems.

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