The growing population of transplants moving to Colorado is no doubt lured in part by the claim that our state gets 300 days of sunshine per year. While that number is debatable, Denver’s still a pretty sunny place, so it makes sense that the U.S. Department of Energy's Solar Decathlon would choose the Mile High City to host its 2017 solar home-building competition. College teams from around the globe have been designing and building full-sized solar-powered homes for the past two years; from Thursday, October 5, through Sunday, October 15, the structures will be judged in ten areas, including architecture, water use and reuse, innovation, market potential and health and comfort. Free house tours, homeowner workshops and a sustainability expo are open to the public at the 61st and Peña commuter-rail station, at 6045 North Richfield Street, from 11 a.m. to 7 p.m. October 5 through 8 and October 12 through 15, and from 1 to 7 p.m. on October 9. Find out more — and get fired up about your own home-improvement to-do list — at solardecathlon.gov.