Solar Windows integrate semi-transparent Organic Photovoltaic (OPV) modules into glass surfaces, transforming windows into active energy-generating elements. These OPVs maintain natural daylight penetration while producing clean electricity, offering a passive and aesthetic solution for energy-efficient building design. Suitable for both new builds and retrofits, Solar Windows support BIPV certification, reduce dependency on grid energy, and enhance the sustainability profile of urban architecture—without compromising visibility or indoor ambiance.