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posted by martyb on Friday August 23 2019, @01:32AM   Printer-friendly
from the summoning-thunderf00t dept.

https://www.fudzilla.com/news/49241-french-solar-road-was-a-failure

A one kilometre "solar road" project paved with photovoltaic panels in France is "too noisy, falling apart, and doesn't even collect enough solar energy".

Le Monde describes the road as "pale with its ragged joints", with "solar panels that peel off the road and the many splinters [from] that enamel resin protecting photovoltaic cells".

It's a poor sign for a project the French government invested €5 million, or $5,546,750. The noise and poor upkeep aren't the only problems facing the Wattway. Through shoddy engineering, the Wattway isn't even generating the electricity it promised to deliver...

Normandy is not historically known as a sunny area. At the time, the region's capital city of Caen only got 44 days of strong sunshine a year, and not much has changed since.

Storms have wreaked havoc with the systems, blowing circuits. But even if the weather was OK it appears the panels weren't built to capture them efficiently... Solar panels are most efficient when pointed toward the sun. Because the project needed to be a road as well as a solar generator, however, all of its solar panels are flat. So even within the limited sun of the region, the Wattway was further limiting itself.

Also: Turns out a Road Made of Solar Panels Was, in Fact, a Bad Idea


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  • (Score: 0) by Anonymous Coward on Friday August 23 2019, @04:14AM (1 child)

    by Anonymous Coward on Friday August 23 2019, @04:14AM (#883912)

    That is actually bad for three reasons. The Colas road requires being built on an already existing road. Said roadway was a single lane. The average highway cost in France is 4.5 million Euros (IQR 3 mil to 5 mil) per lane-km of asphalt road with a 15 year minimum lifespan.

    To add a bit of reference, a recent French highway project that came in at 110 million Euros per km had an extreme outlier effect on that mean.

  • (Score: 2) by PiMuNu on Friday August 23 2019, @11:19AM

    by PiMuNu (3823) on Friday August 23 2019, @11:19AM (#884034)

    > The average highway cost in France is 4.5 million Euros (IQR 3 mil to 5 mil) per lane-km

    It isn't fair to compare a prototype with existing technology.