Past the neatly coordinated neighborhoods, the master-planned homes and immaculate lawns, on an old military runway in Irvine, a community that imagines life on a smaller scale has taken root. There, hundreds of college students from across the U.S., Canada and Europe have designed and built 19 solar-powered homes in a unique competition to see which will emerge as the most cost-effective, energy-efficient and attractive. Sponsored by the Department of Energy, the Solar Decathlon is a rigorous competition — the rule book is 68 pages long and regulates everything from acceptable average interior temperature (71 to 76 degrees Fahrenheit) to affordability (ideally below $250,000) to the brightness setting on a TV during a scheduled movie night.
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