Vivint Solar technicians install solar panels on the roof of a house in Mission Viejo, California, in this October 25, 2013 file photo. A small army of salesmen pitch Vivint Solar, the fast-growing ... more 
Vivint Solar technicians install solar panels on the roof of a house in Mission Viejo, California, in this October 25, 2013 file photo. A small army of salesmen pitch Vivint Solar, the fast-growing rooftop solar installation and financing business owned by Blackstone Group LP. The startup, founded by an entrepreneur and former Mormon missionary, finds members of The Church of Jesus Christ of Latter-day Saints who knocked on doors as part of their own missions are among its best salespeople, making up about half the salesforce. To match Feature BLACKSTONE-VIVINTSOLAR/ REUTERS/Mario Anzuoni/Files (UNITED STATES - Tags: ENERGY BUSINESS RELIGION) less 
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Reuters | Photo By MARIO ANZUONI / REUTERS
Fri, Nov 8, 2013 3:08 AM EST