Drawn from a wealth of experience and examples from around the world, this book reviews key developments in combined cycle technology that help to ensure sustainable energy production. It traces the early development of the combined cycle in Europe and North America to achieve higher efficiency of power generation. The text reviews the development of gas turbines, discusses improvements in steam generator design, and examines the more specialized option of repowering steam turbines. It also describes the development of combined heat and power technology, explores three technologies for coal burning turbines, and examines the issues that are shaping the energy system of the future.