The purpose of this second edition is to provide an overview of important principles in the fields of finance and accounting, and the application of those principles for financial analysis of energy and non-energy capital investments. This book is written as a self-study guide for energy and non-energy engineers and managers who either lack formal training in the subjects of finance, accounting, and engineering economics, or simply need a means to refresh their knowledge in these subjects. This book bridges the gap between the typical business school "MBA" knowledge and its application in enery and non-engergy engineering, project management or manufacturing management. Many energy and non-energy engineers and technical managers feel inadequately equipped to comprehend and apply certain important finance and accounting principles. Understanding of finance and accounting principles is important in interfacing and conducting business with accountants, financial analysts, and members of upper management. This book is designed to familiarize energy engineers and other engineering professionals - in a relatively simple and easy to understand fashion - with decision making skills founded on financial calculations and case study based quantitative analysis.