This textbook provides a new treatment of the fundamentals of energy science, technology, and policy implications. It motivates readers with frequent use of real life examples based on current and future technologies. The book examines alternative and sustainable supply strategies such as wind and solar as well as more conventional sources such as oil, coal, and nuclear energy. It addresses the need for diversity in any nation's energy portfolio and the educational requirements of scientists, engineers, and policymakers today. It offers extensive 'hands on' exercises, online resources, and other learning tools.