About 4570 solar panels (single-crystalline silicon solar cells, polycrystalline silicon solar cells, thin-film silicon solar cells, amorphous/crystalline silicon solar cells, and CIS-based thin film solar cells) cover the building's south, west and top surfaces. The total power generation capacity is approximately 650 kW. This solar-panel envelope, a densely installed mosaic of solar cell panels, contains flat and tilted panels (angled to maximize direct sunlight at the Winter Solstice) to insure the largest annual potential amount of energy produced. On floors with experimental laboratories, where light shielding is required, flat-lying solar panels are installed on the outside walls. On floors with research offices, the louvers between solar cells are optimized according to daytime indoor luminance simulations. Additionally, the distance between the solar-panel envelope and the building ensures adequate ventilation thereby preventing a rise in temperature which would reduce the solar panels' efficiency.