Solar windows use transparent photovoltaic materials to harvest ultraviolet and infrared light while letting visible light pass through. That lets office towers generate electricity from their glass facades without blocking views. The article covers how these systems work, why they matter for dense cities, and the remaining challenges around efficiency, cost, and durability. For building owners, the key question is whether solar windows can beat the combination of standard low-E glass plus rooftop solar on the same structure. The technology is promising for reducing cooling loads and peak demand, but real-world payback depends on local electricity rates, installation complexity, and long-term performance. As more projects get built, the data will show whether this is a niche product or a mainstream building material.
