Hong Kong has an ambitious carbon neutral goal to meet by 2050. Achieving this goal requires a departure from a traditional city-scale centralised, fossil fuel-based energy infrastructure to a more decentralised, locally-generated renewable energy (RE) while expanding the regional intercity smart grid system to accommodate RE import in the Guangdong-Hong Kong-Macao Greater Bay Area (GBA). Such energy transitions inevitably bring new social challenges, but how Hong Kong citizens perceive such transitions in the GBA context is not well studied. This study draws on quantitative and qualitative data derived from an online deliberative poll (DP) (N = 174) on smart energy transitions. We have four key findings. Firstly, citizens showed a low leve...