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Family in front of energy-efficient, solarized home

March 17, 2014 - Seth and Nancy Portner with their daughter Lettie, in front of their Boulder home which they weatherized, insulated and installed a 3.7 kw solar array on the roof. Photo credit: Dennis Schroeder, NREL

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Uploaded on August 23, 2016
Taken on March 17, 2014