Cracked solar road in Tourouvre, France partly demolished after failing

2018Published 27 Oct 2026Responsible editor: Chief Editor

SignificantMechanicalProvisionalNext update 27 Oct

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What happened

A trial solar road made of photovoltaic panels, unveiled in December 2016 in Tourouvre, a town in France, was reported to have failed. The road was about 0.6 miles long and was intended to generate electricity to power streetlights in the town. Cracks have reportedly appeared in the road surface, and in 2018 part of the road was reported to have been demolished because of damage from wear and tear.

Even at its peak, the road was reported to produce only about half of the expected energy. The reporting attributes the shortfall partly to engineers not taking into account fallen leaves settling on the road surface. The account draws on reporting by the French daily Le Monde and by Global Construction Review, which the source cites but which was not independently checked for this entry.

Contributing factors

The source states that engineers did not take into account rotting leaves falling on the road, which reduced output. Cracks appeared in the surface and part of the road was demolished due to damage from wear and tear. The source does not give a full engineering root cause.

Lessons learned

Designers of solar installations on trafficked surfaces should test structural durability under real loads, weather and wear before wider deployment.
Yield predictions should account for site-specific soiling such as falling leaves and debris.
Operators should compare measured output against expected output early after commissioning so that shortfalls are identified and investigated before they become structural problems.

More lessons on weather and external hazards, structural integrity and turbines, from every incident on the register.

Source

businessinsider.com

Published 2026-10-27. Written from public reporting. Descriptive, not investigative. See the data accuracy disclaimer.

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