The unusual property is capable of during the day to rotate around its axis after the movement of the sun, to set up on a solar panel receives the maximum energy. Draft Heliotrope is a three-story residential building of a cylindrical shape, mounted on a column height of 14.5 meters and a diameter of 2,6 meters. Total area is 286 square meters. m On the rooftop photovoltaic panels available capacity 6.6 kilowatt-hour. It is five times more than the required building to ensure all their energy needs, writes Inhabitat. Other environmentally sound technologies used in the construction, are water treatment systems and rainwater collection. Heliotrope built in Freiburg on the draft of the architectural bureau Ralph Disch Solar Architecture. Its author, Ralph Disch 25 years ago, actively opposed the construction of nuclear power in the city, after which he advocated the use of alternative sources of energy in the building of houses - particularly solar energy.
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