Hwai Chyuan Ong research interests are wide-ranging under the general umbrella of renewable and sustainable energy and his main interests are Energy & Fuel, biofuel & bioenergy, circular economy and green technology. He is named as Australia’s top early career researchers in Sustainable Energy by the Australian Research Report 2021. 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 Alexandria Engineering Journal (AEJ) and e-Prime.