Hwai Chyuan Ong research interests are wide-ranging under the general umbrella of renewable energy and his main interests are renewable energy system, biofuel & bioenergy, solar thermal and green technology & environmental. He is listed as 2020 & 2019 Highly Cited Researchers (Engineering) by Clarivate Analytics. In 2018 & 2017, he received the Malaysia’s Research Star Award (frontier researcher) and in 2016, he received the Malaysia’s Rising Star Award (young researcher) by Ministry of Higher Education and Clarivate Analytics. In year 2018, he also received the outstanding research award and the most highly cited paper award by University of Malaya Excellence Award. Currently, he is Associate Editor of Critical Reviews in Environmental Science and Technology (CREST), Alexandria Engineering Journal (AEJ), Energies and guest editor in Biomass Conversion and Biorefinery as well as editorial board member for few other journals. Ong is also a Core Group Member of APRU Sustainable Waste Management (SWM) program.