A 75,000-gallon rainwater collection system provides for all of the home’s potable and non-potable water needs. Water is collected on the roof, which is coated in a non-toxic epoxy ceramic that helps keep the home cool under the hot tropical sun. All of the domestic hot water is provided from a solar hot water heating system located alongside the photovoltaics on the roof.
The home was built according to solar passive design principles, which minimize solar heat gain on the house and maximize natural ventilation. The efficient solar shading and ventilation systems have completely eliminated the need for air conditioning despite the tropical heat. The home’s materials consist of concrete, steel, man-made quarts and local wood found on the property. Appliances were selected based on their energy efficiency, which further minimizes the home’s energy demand.