Dr. N. L. Panwar is a Professor and Head, Department of Renewable Energy Engineering in the Faculty of Engineering at MPUAT, Udaipur, Rajasthan. He has been awarded PhD from the Centre for Energy Studies, Indian Institute of Technology Delhi. His areas of interest cover energy and exergy analyses of thermal systems and energy efficiency & management. He is actively involved in design and development of improved cookstoves, biomass gasifier, and solar thermal devices for industrial and rural applications. He has contributed more than 180 papers in international journals and several books on renewable energy aspects. He has been a recipient of ‘Prakritik Urja Puraskar’ from Ministry of New and Renewable Energy, Government of India for his outstanding book on Alternative Energy Resources. He has also been awarded by “Shrimati Vijay-Usha Sodha Research Award” from Indian Institute of Technology, Delhi in 2014, and Rajasthan Energy Conservation Award 2018 from Government of Rajasthan. Dr. Panwar figured in the list of top 2% scientist in the world in the field of Energy.