Sona College of Technology received the prestigious GRIHA 5 – Star rating from the Association for Development and Research of sustainable Habitats (ADARSH), a Society jointly founded by the ministry of New and Renewable Energy, (MNRE), Government of India and The Energy Resources Institute (TERI). The 5 – Star rating is awarded to the SONA SIGMA BLOCK, in which several green features are incorporated like innovative energy and water efficiency measures, reducing the cooling demand of the building, reducing long term operating costs, etc.?