The novel advances and developments in the field of renewable energy are highlighted in this book. Renewable energy is that energy which exists naturally and covers various sources and techniques at various stages and also, is theoretically limitless. To cater to the rise in energy demands across the world, renewable energy sources like those that are generated from sun or wind are the most easily available and attainable solutions. Advanced and environment friendly techniques are able to administer various social and environmental benefits like employment opportunities and a decent environment. Techniques of renewable energy contribute significantly towards world energy security, lowering dependence on fossil fuels and provide various opportunities to mitigate greenhouse gases. International public opinion suggests that there is a strong support for various methods for resolving energy supply problems, one of which is to utilize sources of renewable energy. Lately, countries have realized that renewable energy and its sector plays a crucial role in order to achieve greener economies. This book covers various developments made in the field of renewable energy.