The National Energy Education Development Project (NEED) provides an extensive set of curriculum resouces for teachers on renewable and non-renewable energy sources alike. Organized by Grade Level, Topic, and Subject Area. Check out their other resources such as Evaluation tools and the Student section. A goldmine of high-quality resources and materials.
Ohio Energy Project — lots of resources for teachers including teacher guides, projects, activities, worksheets, power point presentations and quizzes for your energy unit.
“The Habitable Planet” is a multimedia course for high school teachers and adult learners interested in studying environmental science. The Energy Challenges unit focuses specifically on energy issues. The website provides access to course content and activities developed by leading scientists and researchers in the field.
The U.S. Department of Energy's Office of Energy Efficiency and Renewable Energy (EERE) has lesson plans, curriculum and educational materials available for a wide variety of age and grade levels.
Greening Schools — a project by the Illinois EPA and WMRC. The lessons for elementary, middle school and high school students explore a number of renewable energy sources using a variety of modules and materials.