Heat from the sun is trapped between a pane of glass and a black coating. A masonry wall stores the heat for release into the building later in the day. When there is not enough sunlight, the building's energy management computer adjusts electric light to provide only the amount of additional light needed. When the clerestory windows are open, cooler air naturally flows through the building, forcing the warmer air out. The energy management computer automatically opens the clerestory windows when the building is too warm.
Water is circulated over pads at the top of the tower.
As the water evaporates, it cools the air. These solar panels convert sunlight directly into electricity, some of which is stored in batteries. Any excess electricity from the PV system is sold to the local power company. Some of the energy is stored in the batteries for use during power outages.