The built environment is responsible for a significant amount of energy consumption. Energy transition in the built environment is necessary for both sustainable development and energy security. Digital twin technologies are regarded as potential solutions for energy transition as they contribute to better energy management in buildings, communities, and cities. A literature review is conducted to investigate digital twin studies in the field of the built environment. It has been found that there has been significant growth in the number of digital twin studies since 2018. The keyword co-occurrence analysis was adopted to investigate the research topic and research trend. It is found that the studies of the digital twin in the context of built environment energy transition are insufficient, especially at the community level. The city-level digital twin studies either focus on transportation or buildings, and there is a limited number of studies about digital twin applications, especially at the city level. Moreover, studies failed to connect various aspects of a city system. More studies are needed to tackle digital twin application challenges and contribute to the energy transition.