Power your home using all kinds of solar energy: direct solar energy, wind, falling water, or wood. This book will teach you everything you need to know for designing and building your own alternative energy system. You'll learn the difference between energy and power, how power is related to current and voltage, and how current is related to voltage and resistance. You'll learn about all the different parts of an alternative energy system, what their purpose is, and how they are wired. You'll also learn how to calculate the size system you need. Finally, you'll even learn where to place your solar array and what tilt angle to use. If you already have a knack for these things, this will be the only book you need before you start building. This book was written by an engineer with over 30 years experience who has built his own off-grid home power system.