Book excerpt: The importance of energy management has grown in recent years due to the heightened awareness of the impact of energy use on the environment and its very real impact on a company’s bottom line. This book provides a detailed and knowledgeable reference for those engaged in the energy management field or those just starting out by illustrating a practical approach to implementing energy management programs using case studies and real-world experience. Topics covered include new areas of development such as CUSUM and multivariate regression analysis. Also included is coverage of all systems and standards that affect energy management, including ISO50001, EMIS, Industrial Refrigeration, Cooling Water System and Industrial Ventilation System. Technical, organizational and behavioral considerations are covered. The book is designed as a quick reference guide for practicing energy managers.