Indian Institute of Technology-Guwahati an industry partner has developed an energy-efficient and eco-friendly technology for cookstoves for commercialization by its researchers to benefit the public. Developed by a research team headed by Professor P Muthu Kumar, Department of Mechanical Engineering, the technology was transferred to industry partner Agni-sumukh Energy Solutions Pvt Ltd, Bangalore for commercialisation, a release from IIT-Guwahati said on Friday.