A Handbook for Cogeneration and Combined Cycle Power Plants discusses the design, fabrication, installation, operation, and maintenance of combined cycle power plants. The book has been written to provide an overall view for the experienced engineer working in a specialized aspect of the subject and for the young engineering graduate or undergraduate student who is being exposed to the field of power plants for the first time. The book has proven to be very useful as a textbook for undergraduate and graduate courses as well as for in-house company training programs related to power generation, and I believe that the new edition will further extend the knowledge of the engineer in this field. The second edition is not only an updating of the technology, which has taken great leaps forward since the year 2001, but I have also rewritten the introductory chapter to bring the reader new information in the power industry, especially carbon sequestration technology, which will be a topic of great interest in the years to come. The power industry has, in the past 8 years, embraced the combined cycle power plants and, with the new high-efficiency advanced gas turbines, is at the center of this growth segment of the industry. This has led to the rewriting of the following chapters: Chapter 1, "An Overview of Power Generation"; Chapter 5, "Steam Turbines"; Chapter 7, "Heat Recovery Steam Generators"; and Chapter 8, "Condensers and Cooling Towers." A new chapter has been introduced, Chapter 15, "Case Histories of Problems Encountered in Cogeneration and Combined Cycle Power Plants." This is an extensive treatise on the many problems associated with the combined cycle power plants and some of the solutions that have achieved higher efficiencies and reliability. This chapter explains in depth the problems encountered and with 145 figures fully illustrates the many failures encountered in cogeneration and combined cycle power plant applications. This book has been used extensively by engineers in the industry, and I have used it in the many courses I have taught in this area. The suggestions from these engineers have guided me in my writing of the second edition of this book. The new chapters have been written with an eye toward the new issues both from a technical and legal point of view in the operating of power plants. In this new edition, I have introduced extensive sections on the chemical treatment of the water used in combined cycle power plants. The chemistry sections and related information have been provided by David Addison of Thermal Chemistry Limited, New Zealand. I have also used many topics that have been well researched by the Electric Power Research Institute in its many publications.