Here comes the asphalt and the road that produce photovoltaic energy 
sunstroke Calculating average of 4 hours a day, every panel, even with an efficiency around 15%, will produce 7.6 kWh per day. The energy could then be fed into the network or stored on the streets, to recharge electric cars
For photovoltaic panels are being studied case, which is more ambitious than to stand on the rooftops. One of the most promising, according to a proposal by the American Society solar roadways, relaunched an interview by the authoritative magazine New Scientist, is to use them to pave the streets instead of asphalt, a technique that would open up huge potential. It is estimated that the U.S. only the surface total of roads, highways and parking lots outside is over 100,000 square kilometers, equivalent to one third of Italy.
Solar roadways, with the help of a highway funding by the entity of the United States, is planning to do this photovoltaic panels of 3.7 square meters on each side (the standard width of road lanes in America), so which can then be juxtaposed on the roads.
sunstroke Calculating average of 4 hours a day, every panel, even with an efficiency around 15%, will produce 7.6 kWh per day. The energy could then be fed into the network or stored on the streets, to recharge electric cars. The problem
obvious is the need to build panels resistant to the passage of cars and trucks. According to Scott Brusaw, electrical engineer and founder of Solar Roadways, this difficulty can be overcome, for example by adapting the techniques used for the construction of bulletproof glass. The second problem is that too smooth a surface is not suitable for driving. One possible solution is to use instead of a smooth panel, thousands of tiny prisms that would allow the tires to grip.
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