This article describes the outreach experience of a graduate fellow who participated in Washington State University’s efforts to promote interest in engineering and sustainability by underrepresented high school students. The fellow mentored students from a rural high school as they developed projects related to sustainable energy for the university’s 2008 Imagine Tomorrow competition. Outreach strategies focused on fostering student ownership, using formative assessment, and promoting student preparation. In contrast to other winning high schools, the study high school exhibited low academic achievement and high ethnic diversity. Yet, the high school won the grand prize. Inspired, the school has competed in and won an award in every Imagine Tomorrow competition since 2008 with teams including American Indian students, a target of future outreach efforts. The experience shows that outreach to appropriate schools, in combination with university-sponsored technology competitions, can promote underrepresented student participation in engineering.