A growing body of literature has analyzed urban energy transition. However, the existing analytical frameworks are limited in fully capturing energy transition in cities. This study develops an integrated multilevel governance framework by adding indicators. Using this framework, this study analyzed Seoul``s energy transition and found that the energy transition has enhanced by embracing important values beyond the achievement of quantitative targets. From the vertical perspective, parts of national policies downloaded to shape the OLNPP. This study also discovered that the current energy system deteriorated the effectiveness of Seoul``s energy transition. From a modified horizontal perspective, institutional preparations for Seoul``s energy transition were initially inspired by best practices in other cities. However, this situation has reversed. In addition, this study found that a variety of actors have participated in shaping and implementing Seoul``s energy transition.