Penn State develops CPV system for rooftops

Researchers at Penn State have developed a concentrating photovoltaic system that is small enough and light enough to be mounted on a building’s roof. "Concentrating photovoltaic (CPV) systems leverage the cost of high efficiency multi-junction solar cells by using inexpensive optics to concentrate sunlight onto them," explained Noel C. Giebink, assistant professor of electrical engineering, Penn State. "Current CPV systems are the size of billboards and have to be pointed very accurately...

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