Energy is crucial to the operation of a modern industrial and service economy. Recently, there have been growing concerns about the availability and cost of energy, as well as the environmental impacts of fossil energy use, especially global climate change. Those combined concerns have rekindled interest in energy efficiency, energy conservation and the development and commercialization of renewable energy technologies. This book examines federal programs that provide grants, loans, loan guarantees and other direct or indirect regulatory incentives for energy efficiency, energy conservation and renewable energy.