BIPV solar power harvesting cells that are incorporated into the walls, roofs, and windows of buildings integrate seamlessly instead of being bolted onto a finished building as an afterthought. The BIPV material has the same structural and physical characteristics as the material that is being offset. Two examples of structures with BIPV features are the new football stadium being built for the San Francisco 49ers in Santa Clara, Calif., which has technology developed by BASF SE; and the new Bloomberg LP headquarters in London being designed by Foster + Partners, which includes solar that’s incorporated into the roof. The 55,000-seat Kaohsiung World Stadium in Taiwan is also a great demonstration of this: close to 9,000 panels are integrated directly into the building’s skin. And one of the most mature and largest examples of BIPV design is the vertical solar façade on the CIS Tower in Manchester, England which uses technology from Solar Century Holdings Ltd.