Non-hardware costs make up 41 percent to 50 percent of the expenses of selling and installing a solar electric system, according to a report by National Renewable Energy Laboratory (NREL) that is set for release within two weeks.
URL: http://www.renewableenergyworld.com/rea/news/article/2012/11/federal-report-quantifies-pv-solar-soft-costs?cmpid=rss
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