Halide perovskite photovoltaics (PVs) show great promise as low-cost, high-efficiency materials for renewable energy conversion. Scaling from lab cells to large, stable solar modules remain challenging. This talk addresses key issues in technological upscaling, focusing on solution-based slot-die coating—a technique compatible with roll-to-roll manufacturing and high-throughput production. Achieving uniform, defect-free films require optimized ink formulation and control of crystallization dynamics. The talk will also stress the importance of open, FAIR-based data platforms such as the Perovskite Database (www.perovskitedatabase.com) to promote transparency, reproducibility, and innovation. Building a strong data-sharing culture is essential for accelerating sustainable commercialization of perovskite technologies.