Pankaj Kalita is an Associate Professor in the School of Energy Science and Engineering of the Indian Institute of Technology Guwahati, India. His current areas of research include solar energy conversion, thermochemical and biochemical conversion, energy management, energy storage, and integration of renewable energy for remote electrification. Pushpendra Singh is a Post-Doctoral Fellow at the School of Energy Science & Engineering of the Indian Institute of Technology Guwahati, India. He possesses about two years of experience in teaching undergraduate students. He earned his PhD in Mechanical Engineering from the Madhav Institute of Technology & Science, Gwalior, India, under the National Doctoral Fellowship (NDF) program of AICTE. He has made notable contributions to the fields of solar thermal energy, solar distillation, and heat and mass transfer.