Rooftop systems are becoming more popular among homeowners In many parts of the world, solar energy typically finds a home on the rooftops of homes and businesses. These are small scale photovoltaic systems that are designed to serve as a localized energy source. Large scale projects have become quite popular as well, but have experienced relatively slow growth because of their high cost. In the U.S., rooftop solar energy systems are showing much more potential than their large scale counterparts, according to a new report from the Lawrence Berkeley National…

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