India is full of sun energy. Technologies developed on use of this energy can help saving the fossil fuels in industrial, commercial and institutional establishments for various applications. A huge amount of fossil fuels especially the electricity and fuel oil are being consumed for thermal applications e.g. water/air heating, community cooking, process heat, space cooling etc. At most places the heat requirement in the form of steam/pressurized hot water/ air or oil is between 90 to 350 C. Industrial sector is the major sector which require such heat for various processes.