Integration of renewable energy sources is one of the major factors in determining whether a community is sustainable in the longer term or not. In this book, emphasis has been made on various aspects of energy planning such as energy assessment, energy integration, energy forecasting, energy modeling, computer modeling and techno-economic analysis of different conventional as well as non-conventional renewable energy sources. Much of the information presented in this book is basically to acquire an understanding of the integrated energy planning, its design, development, implementation, monitoring and feedback evaluation. This book will be useful for those involved in energy activities and planning.