This book emphasis the domestic, industrial and commercial sectors consume enormous energy. In recent years, these sectors have witnessed manifoldgrowth, and have led to an increased energy demand. Despite the increase inenergy production, the burgeoning demands for energy have outstripped theavailability. Energy shortages and variable power availability cripple society's advancement. The rise in demand of energy and peak shortages hasadversely affected various sectors.Renewable sources of energy have emerged as a crucial option, onaccount of the greater energy demand, price volatility of fossil fuels, climatemitigation and energy crisis due to the increasing depletion of fossil fuels.However, the unpredictability of the output of renewable energy conversionsystems demands robust, reliable and efficient technologies. Such systems canproduce savings by reducing the energy use and displacing fossil fuelexpenditures. The United Nations general assembly in December 2010designated 2012 as the international year of sustainable energy for all, aimedat ensuring universal access to modern energy services, doubling the rate of improvement in energy efficiency.