Solar Roads: Can Streets Become Giant Solar Panels? | National Geographic

there is a project in the United States called solar roadways which consists of concrete slabs including the solar cells plus tempered glass on top of it there's a quite similar project in the Netherland called Colorado section on a on a cycle past was built about one year ago but it's a large concrete slabs which means that in fact you're completely rebuilding a road our technology is different in that way that in fact we just placed our solar panels on an existing pavement it does not require all that amount of aluminum works the first ID was generated about ten years ago and it came from the feeling that in fact the rotor looks at the sky for more than a 90 percent of the time so during this 90 percent of time it can collect energy from the Sun we had a very good opportunity to work together with the people at the National Institute of solar energy the knowledge is photovoltaic technology our knowledge is how to build roads and we work together to find the solutions to the several problems who we are to face to be able to integrate this technology on top of an existing pavement we had pages and pages of questions what will be the grip on such a surface which type of materials which should we use which ratio between the active solar surface and the road surface how could we maintain it how could we recycle and so on we tested several mixes of resins of glass Birds of broken glass and so on until we found a good compromise between the group level and the light absorption these solar panels will produce electrical energy and the use will be quite similar to the one you could have with traditional PV panels placed on on rooftops you can either connect them to the global electricity network and in that case your re-injecting an electricity into the network or in case of more isolated locations you can simply store the electricity in batteries and then use it for example public lightning you could even also imagine in a longer term but you could also supply a electricity to our electrical vehicles for example either through traditional plugs or even through wireless technologies such as an induction the concept of Sura Road try to face two major problem of development of solar energy the first program is the lack of surface to produce enough energy and the second program is for enough cost of the systems and when you use a solar rod of course you take advantage of a large surface of existing Road so most of the work has been done and you just have to integrate your component on the road I can see to program with rewards the first one come from the eating of a solar panels because when the temperature of panels increases the efficiency decreases and the aging process are accelerated and the second one is that for a prediction of a solar energy production you will have to integrate the traffic road modelling to be able to predict accurately the activity prediction another interesting parameter to look at is the energy payback time which is the time necessary to produce the same energy that has been used to produce the panels so it's a real challenge for engine you you

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