MNN - Mother Nature Network

Nineteen fiercely competitive college teams descend on Washington, D.C.'s West Potomac Park in late September to create the most attractive, livable, affordable and efficient solar-powered home. Whether you're visiting the Solar Decathlon and touring the homes yourself (the competition kicks off Sept. 23 and runs through Oct. 2) or plan to follow the event from afar, take a few moments to familiarize yourself with each remarkable entrant. May the best solar-powered home win!