Spain tracking panel
Some designs were made specifically for the event, like that of Team Spain. This house uses building-integrated photovoltaics with solar cells embedded in the glass walls. The roof is a one-of-a-kind solar collector, which tracks the sun over the course of the day. The roof generates electricity and heats water, which is stored in large tanks and then circulated under the floor to heat the inside. Rainwater is also drained from the roof and saved for plantings.
October 10, 2009 8:27 AM PDT
Photo by: Martin LaMonica/CNET
| Caption by: Martin LaMonica
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