Renewable Energy Integration for Urban Sustainability A Nanomaterial Perspective Mahesh Bhong, Rahul Singh, Pradeep Kumar Singh, Yadaiah Nirsanametla, Rajesh Prasad Verma, Manish Saraswat and Amit Srivastava E3S Web Conf., 511 (2024) 01034 Published online: 10 April 2024 DOI: 10.1051/e3sconf/202451101034