In last decade, several large-scale earthquakes have struck major population areas and caused heavy casualties and losses in many countries. Therefore, to understand the impact and disaster scenarios of assumed large-scale earthquakes to urban areas becomes an urgent and crucial task to the central and local governments of Taiwan. The purpose of this research is to develop an integrated research and application platform, Taiwan Earthquake Impact Research and Information Application (TERIA), which is established to evaluate the impact scenario of earthquakes to the metropolitans in Taiwan. Using TERIA platform in this study, the post-earthquake scenario analysis focused on power system as examples.  Incorporated with geographic information system (GIS) analysis in 500m×500m grids, the characters of ground shaking and liquefaction for whole area are provided.  To conclude with it, the objective of this unique platform is to furnish a comprehensive impact and damage scenario to fulfill the necessary data for planning disaster mitigation strategies and preparedness actions that make the cities in Taiwan more resilient to earthquakes.