Abstract: Climate change leads to more frequent extreme weather events, thereby posing unprecedented challenges for urban energy supply. Few studies on urban energy planning have investigated the impacts of extreme weather events on urban energy systems. Based on historical weather data and system performance during extreme weather, extreme weather scenarios can be established and further combined with conventional scenarios to establish a modeling framework for urban energy planning. The specific power expansion planning case study conducted in Xiamen City indicates that when considering the "Once-in-ten-year" or "Once-in-fifty-year" typhoons as representative extreme weather, the total cost for 20 years’ design and operation of urban energy system is 1.8% or 1.1% higher than that when not considering extreme weather events; moreover, an increase in the proportion of gas power could enhance climate resilience of urban energy systems. In this study, we propose a flexible and extensible modeling framework, and the insights generated by the case study could offer referencing support for energy planning in coastal cities.