Researchers in Hong Kong have developed a novel thermochromic bifacial photovoltaic glazing system that passively regulates solar heat gain while harvesting energy from both sides. The system integrates hydrogel-based thermochromic layers with bifacial PV modules to reduce cooling loads, indoor temperatures, and energy consumption. The hydrogel transitions from transparent to translucent as temperature rises, reflecting light towards the rear side of the PV glass for enhanced electricity generation. The prototype system optimizes building energy use, reduces costs, and emissions by dynamically modulating solar transmission and capturing reflected energy. The design addresses limitations of previous hybrid solutions by combining PV glazing and hydrogel-based TC technology in a single system for advanced glazing applications. The research on TC‐BiPV glazing shows significant benefits in reducing direct solar heat gain and increasing electricity generation compared to other glazing options. Annual simulations indicate that TC‐BiPV can provide a gain of 9-18% for skylights and 6-14% for vertical windows. The system also reduces indoor heat gain and cooling loads, making it a practical solution for energy-efficient building envelopes in warm climates. The study highlights the scalability and passive nature of the TC‐BiPV approach, emphasizing its potential for climate solutions.