I recently attended the first solar decathlon held in Irvine. It has always been in Washington D.C. Irvine is noted for its progressive housing development with sustainable and eco-friendly construction. University students both in the U.S. and from Austria and Czech built these homes and can be sold starting around $160,000. Homes are built with solar panel, thick walls with dense insulation using cellulose with energy efficiency in mind. A winner will be selected from the competition. The exhibition is from Oct 3-13, 2013.