The Spanish team works to finish construction of its "Follow the Sun" building. The house uses solar cells built onto the siding, but the construction is dominated by an inverted pyramid that rotates and tilts to take advantage of the sun's angle. Both solar photovoltaic and solar thermal panels are housed within the pyramid to generate electricity and hot water and heating.
October 7, 2009 4:47 PM PDT
Photo by: Martin LaMonica
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