Indian Navy in collaboration with Interdisciplinary Centre for Energy Research ICER, IISc Bengaluru has designed and developed a ‘first-of-its-kind’ Transcritical CO2 based 30TR Air Conditioningplant for Marine Applications which has been installed at “Centre of Excellence - Marine Engineering” at INS Shivaji. The prototype is a stepping stone towards adopting natural refrigerant substituting conventional HCFCs.