Southeast Asia has approximately 106 GW of active coal-fired generating capacity, behind only China, India, and the United States. The region has another 30 GW in the pipeline. If the Paris Agreement is fulfilled, there is a risk that these assets will become stranded. However, the extent of this risk remains largely unquantified. This study is the first to assess how uncertainties in renewable power development and carbon pricing affect the risk of coal-fired power plants becoming stranded assets across Southeast Asia, using a Monte Carlo-based analysis.