This article discusses how sixth through twelfth grade science teachers can engage their students in the design and implementation of sustainable energy projects as part of a unit of study on energy. The project challenges students to engage in an energy project that gives them the opportunity to make a difference in their local community and the world. Student projects include a project description, an approved protocol, project design, community experts as a resource, and a discussion of obstacles and problems. (Contains 2 tables and 2 figures.)