Increasing amount of electricity bills has frustrated people around the world and so in India. Increase in Population has resulted in increase in energy consumption along with the leisure life of living. People need energy to live and to run their daily life. Energy is needed in the building to live and to seek comfort. However, the energy tariff from the grid is disappointing with the steady increment over the period. Hence, in conjunction with these requirements this book explores the feasibility of the combinations of renewable energy systems (hybrid systems). Selection of the correct technologies for the efficient productivity of the hybrid system is a key factor. In addition, this book helps to determine in choosing the economic, efficient and reliable types of equipment for the chosen technology.