The document outlines the Clean Energy Finance and Investment Roadmap of Thailand being developed by the OECD. The Roadmap aims to (1) develop an implementable strategy to scale clean energy finance and investments, (2) set actions and time-bound milestones, and (3) recommend new financing mechanisms. It will focus on energy efficiency in buildings and distributed renewable power. The Roadmap will be developed through background research, stakeholder workshops, and case studies to identify financing needs, opportunities, and an action plan to mobilize investment over the next 5 years.