In the last few years, the ASEAN member states (AMS) started facing some difficulties in its energy security, particularly electricity. In order to cope with the existing problems, energy security takes precedence in ASEAN energy agenda such as a blueprint called the ASEAN Plan of Action for Energy Cooperation (APAEC). However, in the actual implementation of electricity mix in ASEAN shows slow progress of development despite has great potential to replace fossil energy and to alleviate energy security in the future.  This study aims to compare and analyze the policy and current status of energy security in the ASEAN region. To do so, the study uses systematic interrogative tool which consists of eleven broad energy security dimensions associated with the current global energy system. These energy security dimensions take into account numerous quantitative and qualitative attributes of a state’s energy security and policy, and include both traditional energy security concerns and many new factors, such as environmental, socio-cultural and technological. Primarily this study will take a qualitative approach, utilising case study as the basis of an iterative process of data collection and data analysis. The researcher employed the purposive sampling method to identify key individuals influencing energy policy development and implementation based on their level of engagement, expertise, experience, network or credibility. The result of this study showed that Indonesia, Malaysia, Singapore, and Thailand have already implemented advanced policies towards energy efficiency and conservation (EE&C). Indonesia, Malaysia, the Philippines, Thailand and Vietnam have provided Feed in Tariffs (FiTs) policy for various renewable energy (RE) sources, which are mostly higher than the electricity market price. Tax incentives, such as tax exemptions and reductions for RE projects, have been established in most AMS as part of government efforts to attract investors, constructors, and energy companies to engage in RE development.