The Association of Southeast Asian Nations (ASEAN) is at a pivotal point in its collective energy future. This report outlines energy transition pathways that focus on renewables, end-use electrification, energy efficiency and emerging technologies, such as hydrogen. The main focus of this report is the 1.5°C Scenario (1.5-S), an energy pathway for ASEAN that is aligned with IRENA’s global 1.5-degree pathway from the World Energy Transitions Outlook