The nation's reliance on imported oil, rising energy costs, and fossil fuels' potential contribution to climate change have renewed the federal focus on renewable energy. Many federal agencies support renewable energy activities, raising congressional concerns about the number and roles of agencies implementing such efforts. This book examines the wide range of federal activities related to renewable energy and the recent increase in these efforts that have raised congressional concerns about the number of agencies implementing such activities, as well as the roles of agencies responsible for regulating and providing funding to various segments of the renewable energy industry.