MEGA House, Taipei, Taiwan: 3-in-1 solar energy glass panels also act as a roofing material. It is a building integrated photovoltaic (BIPV) product that generates electricity, insulates, and self-cleans. (Photo by Mignon O’Young) MEGA House, Taipei, Taiwan: 3-in-1 solar energy glass panels also act as a roofing material. It is a building integrated photovoltaic (BIPV) product that generates electricity, insulates, and self-cleans. (Photo by Mignon O’Young)