The use of polystyrene as a buoyancy mechanism creates a huge “thermos flask” underneath the house. During the hot season it will be possible to both heat the water and store it in the storage reservoir at a temperature of approximately 70ºC to be used during the cool season. So far it has not been technically possible to store this surplus of collected solar energy in an economically advantageous manner. This is a perfect solution to that problem.

In addition to the use of solar panels, the house is equipped with a masonry stove and a small domestic mill on the top of the dome, which also contributes to the power and heating supply. The house may be provided with a closed drain system, which will not only clean the sewage and extract decomposed manure, but will also purify rainwater for drinking. This is an interesting challenge with all sorts of exciting implications. The technology is already available.