Countries in Asia have made ambitious targets towards clean energy transition. Accelerating the energy transition calls for enhancing flexibility in energy systems and pushing boundaries to increase the penetration of renewables to meet these targets. Cross border electricity trade has immense opportunity for decarbonizing power sector and meeting seasonal demand and supply gap, through the development of large-scale cleaner, greener and sustainable energy infrastructure & facilitating renewable energy grid integration in different parts of Asia and beyond. Installed capacity of renewables is only a fraction of the total potential renewable energy resources that could be utilized. Cross border trading of excess solar energy and hydropower could also play an important role in clean energy transition, grid balancing and energy security in Asia. Considering the dynamic nature of regional clean energy transition, it is critical for the region not only to pursue bilateral and multilateral power trade opportunities but also to form a regional power pool market. This will assist the participating countries to optimize the use of regional resources and to provide flexibility to deal with intermittent renewable energy at any given time and at any location. ADB has been supporting regional initiatives such as South Asia Subregional Economic Cooperation (SASEC), Greater Mekong Subregional (GMS) program, Central Asian Regional Economic Cooperation program (CAREC) through which regional power trade and regional energy cooperation are being pursued. This will require countries, among others, to establish suitable policies and an enabling environment as well as mobilize public and private capital to promote regional power trade for clean energy transition in Asia and the Pacific.