Last week, researchers at Worcester Polytechnic Institute (WPI) in Worcester, Massachusetts announced that they have a found a way to use asphalt to create solar energy. Specifically, they have looked at different compositions to find the most conductive "recipe" for asphalt, finding that the absorption could be significantly increased by the addition of more conductive aggregates (ie quartz).
Today, Bao-Liang Chen (a PhD candidate at WPI) presented findings of a study that evaluated the feasibility/usefullness of implementing this "clean", cost effective, alternative energy source at the annual Society for Asphalt Pavements (who knew!) symposium in Zurich, Switzerland. Additionally, unlike solar panels, this method of energy generation wouldn't be nearly as unsightly and, because "blacktops" are so good at retaining heat (as I'm sure we've all experienced at least once each summer), the asphalt will be able to keep producing energy even after sunset. Some say installing the receptors will even help to cool the pavement itself - a novel idea.
In other news, Oregon is once again leading the nation when it comes to renewable energy. Portland General Electric (PGE), US Bank and the Oregon Department of Transportation (ODOT) have partnered up to create the first solar-powered highway by the end of the year, even going so far as to really "keep it in the family" by having all materials provided by in-state companies.
"Highway@night #2" © Stefan Dulman
So what does a "solar powered highway" mean? Well, during the day, the highway will store solar energy (approximately 112,000 kilowatt hours (kWh)) each day, then use that energy to light the roadway at night. ODOT is beginning by implementing this revolutionary system at the I-5/I-205 interchange at Tualatin, OR. Once again, Oregon is showing us how it's done!
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