This is a useful resource for the students, practicing engineers, managers and other professionals for getting an insight into energy and environment management which are becoming increasingly important. Energy is essential for survival of the civilization and development of nations. Expenses on energy can be easily monitored to improve profitability. It is difficult to find a single book on energy and environment management. One of the authors carried out energy and environmental audits for five years. His experience on energy and environmental issues of an oil refinery for ISO 9000 and ISO 14000 certifications helped him in providing over 63 true case studies. Hands-on energy audit, environmental audit, eight years in complex process industry, and a doctorate in communications and feedback skills helped him to cover the above interestingly in this book. He has written seven books and prepared courses on Udemy, world's best online training platform.