Eric Layton, an engineer in the solar industry who installs solar panels, wrote this guide for readers that are trying to build their own solar or wind system. Using pictures, this do-it-yourself (DIY) solar and wind system was built with a battery back-up system. His new book is a comprehensive guide on the design, thought process, equipment, and technique on designing this DIY system. Using photographs taken throughout the building process, he covers why he chose certain components in addition to any issues building and installing. This book was written to help fellow solar and wind enthusiasts, as well as inspire those who would like to build their own solar and wind DIY system.