The orientation maximizes the north and south exposure to allow better sunlight control. To the north, overhangs shade the summer sun. To the east and west, few windows occur to block out the intense low sun. This also provides privacy from the neighbors on each side. Windows to the north provide diffused light and allow cross ventilation. Sloped roofs house solar panels and direct rainwater into the water collection basins. On the flat roofs, green roofs absorb much of the rainwater.