2nd ASEAN International Conference on Energy and Environment (AICEE) Cambodia, Hybrid, 14-15 September 2022 Accelerating Clean Energy Transition to Enhance Energy Security and Environmental Sustainability in ASEANIntroductionASEAN Centre for Energy (ACE) is an intergovernmental organisation within ASEAN structure that represents the 10 ASEAN Member States’ (AMS) interests in the energy sector. With their growing population and economic growth, AMS are expected to be a new global epicentrum of energy market in the future. This trend pushes energy security as one of the highest priorities in energy development in the region.On the other hand, the ASEAN Plan of Action for Energy Cooperation (APAEC) Phase II: 2021-2025, a regional blueprint on energy cooperation, has a theme and sub-theme in which embracing energy transition is one of the key elements to achieve regional energy security and environmental sustainability.Therefore, the concerns on energy security and sustainability call for collaborative planning and action between energy and climate change policymakers, scholars, and businesses, to find common ground and ensure success in both areas. Energy and climate experts sometimes work in their own chambers and have limited interaction with each other. To bridge the chamber and pave the way forward, the short-run target of energy security and the long-run target of sustainability should be reconciled within the framework of the energy transition. During the energy transition, a mixture of fossil fuels and renewable energy that maximizes economic growth and minimizes emissions might be preferable. The optimal road map to decarbonization and shift to low carbon energy should also be developed.To help accelerating the energy transition, improve intersectoral collaboration and connect academia with policymakers and business sector, the ASEAN Centre for Energy (ACE) and the Institute of Technology of Cambodia (ITC) as the academe partner held the 2nd ASEAN International Conference on Energy and Environment (AICEE) in conjunction with the ASEAN Energy Business Forum (AEBF) 2022 and the 40th ASEAN Ministers on Energy Meeting (AMEM). The 2nd AICEE was in partnership with the Kyoto University, Japan, Japan-ASEAN Science, Technology, and Innovation Platform (JASTIP), and the International Society for Sustainable Future of Human Security (SustaiN Society), and support of the National Energy Technology Center (ENTEC), Thailand. This year, the 2nd AICEE was held in collaboration with the 8th International Conference on Sustainable Future for Human Security (The 8th SustaiN).List of Theme, Topic, Key Dates, Participants, Agenda, Steering Committee, Scientific Committee, Organizing Committee, Documentation, Conference Agenda are available in the pdf.