AbstractThis study tackles the challenge of upscaling perovskite solar modules (PSMs) to attain high power conversion efficiencies (PCEs) suitable for industrial applications. Through systematic experimentation, a remarkable PCE of 17.68% for PSMs fabricated on a substrate with dimensions of 15.6 cm×15.6 cm is achieved. By refining the cell interconnection design, a geometric fill factor (GFF) of 96.4% is obtained, marking a significant milestone in bridging the performance gap between individual cells and modules. Building on this success, it is fabricated and tested large‐area perovskite solar panels (PSPs) with an area of 0.73 m2, integrating the optimized PSMs. This work not only demonstrates the feasibility of large‐scale perovskite‐based photovoltaic systems but also sets a new benchmark for the PCE and scalability of these technologies, paving the way for their practical application in renewable energy generation.