What are the major developments and trends which are emerging and evolving to set the course for meeting the growing energy needs of the modern world? This comprehensive book explores this compelling and complex topic, examining the driving and often competing forces which come into play as we move forward. Currently 85% of the world's energy systems are powered by coal, oil and other fossil fuels. However, as growing concern for the climate crisis and carbon emissions move to the forefront, while simultaneously it becomes clear that the end of cheap oil is in sight, the need for increased emphasis on both energy efficiency and alternative sources of energy can no longer be ignored. The author provides an overview of the ongoing energy mix evolution, current technology and alternative fuel developments, sustainable building trends, evolving energy efficiency practices, and more. The technical and economic tradeoffs of renewables, as well as planning, siting installation, operation, and safety considerations are covered. A full chapter is devoted to alternative fuel sources and fueling methods. Also examined are grid integration and transmission issues as they relate to alternative energy sources. The influence of energy and environmental policy, greenhouse gas restrictions, and the role of the business community are fully discussed.