The U.S. Department of Energy Solar Decathlon 2015 was held Oct. 8–18, 2015, at the Orange County Great Park in Irvine, California. Fourteen teams competed to design, build, and operate the most cost-effective, energy-efficient, and attractive solar-powered house. Ultimately, Stevens Institute of Technology emerged victorious. It was the school's third Solar Decathlon competition. For more information about the 2015 event, read the visitors guide.