Priyantha has over 39 years of professional experience including 17 years in ADB. He served as the Director, South Asia Energy Division and Chief of Energy Sector Group prior to assuming the current position in June 2023. Before joining ADB, he served as the founder Director General of the Public Utilities Commission of Sri Lanka and a Senior Professor of Electrical Engineering at the University of Moratuwa. He has extensively contributed to the areas of energy policy and regulation, energy planning and clean energy development. He is currently an adjunct Professor of Electrical Engineering at the University of Moratuwa. Priyantha holds a Doctorate in Power Systems Economics from the Imperial College London had been a regular Academic Visitor at Imperial College London during the period 1993- 1998. He was a Chairman of the South Asia Forum for Infrastructure Regulators (SAFIR) and was also a member of the Board of Directors of the Ceylon Electricity Board and Sri Lanka Sustainable Energy Authority. He was an Advisory Board member of the Melbourne Energy Institute at the University of Melbourne. He is a Fellow of the Institution of Engineers Sri Lanka, a Senior Member of the Institute of Electrical and Electronic Engineers (IEEE), a Chartered Electrical Engineer and a Member of the Institute of Engineering Technology (IET), UK. He is a Past President of the Sri Lanka Energy Managers Association