Keynote Speakers Introduction

Prof. Dennis Y.C. Leung
University of Hong Kong, China
Head of the department specializing in environmental pollution control and renewable & clean energy

Biography | Prof. Dennis Y.C. Leung received his BEng (1982) and PhD (1988) from the Department of Mechanical Engineering at the University of Hong Kong. Professor Leung joined HKU Mechanical Engineering Department in 1993 as a lecturer and became a full professor in 2007. He is currently the head of the department specializing in environmental pollution control and renewable & clean energy. He has published more than 460 articles in this area including 300+ peer reviewed top SCI journal papers. His current h-index is 73 and total citations are 30000+. He is one of the top 1% highly cited scientists in the world in energy field since 2010 (Essential Science Indicators) and named as a Highly Cited Researcher by Clarivate Analytics from 2017 to 2020. Prof. Leung has delivered more than 70 keynote and invited lectures in many conferences.



Tianjin University, China
President Assistant of APEC Sustainable Energy Center

Biography | Steivan Defilla, Swiss national, visiting Professor of school of architecture, Tianjin University; President Assistant of APEC Sustainable Energy Center from 2018. His recent report on the topic “APEC Sustainable Urban Development Annual Report - From Models to Results” is being released as APEC publication and made available to international and regional organizations.

He is the former (2010 - 2016) Director of the Energy Charter, an intergovernmental energy organization with 50 Member states headquartered in Brussels. He managed the expansion of the Energy Charter to include 30 new observer states, among them China, who all signed the International Energy Charter declaration in May 2015 in an ad hoc Ministerial conference in The Hague, The Netherlands. He also supervised or co-authored 26 studies and analyses and 2 books on energy-related subjects.

As Senior Energy Advisor to the Swiss Economics Minister (1999 - 2010) he contributed to the reform of the Swiss electricity sector, the Swiss infrastructure strategy and the Swiss foreign energy policy. He wrote a book prefaced by the Swiss Energy Minister and co-authored 13 articles in English, German, French and Russian languages. He also attended Governing Board meetings of the IEA and chaired the multilateral negotiations at the Energy Charter.

Steivan holds a Master degree in Statistics and a Bachelor degree in Economics from the University of Neuchâtel, Switzerland. He also holds a Postgraduate degree on Energy from the Federal Polytechnic Institute Lausanne. Steivan is winner of a United World Colleges scholarship and is fluent in eight languages.