Every production causes destruction. This destruction gives harm to the nature; moreover the final product continues this harming process. The "recycling" process which the industry accepts is indeed an alteration of form rather than being a real recycle. Paper with the help of chemicals can be recycled after usage, but it never turns into a tree again. It is the same for many so called recycling materials. All buildings have to have a green character in the new century. This must be more than adding a couple of pv panels on the roof. The C2C Home competition's aim was to design a house such that it will give to the nature rather than taking from it and be composed of materials that can recycle endlessly. In this proposal this is tried to be achieved by a conical structure which minimizes the material use and produce hydrogen for the car of the house. Inspired by the ancient teepees cone has some superior characters when compared to other forms. It is the most efficient form that can cover a given space. Another geometric advantage of the cone is that it eliminates the need to build a roof, being a roof itself. Eco-cone is composed of recyclable materials like glass and metal. Outer shell is formed with SIP (structural insulated panels) which are composed oriented strand boards outside and organic insulation materials inside. Floors are covered with bamboo and linoleum. Walls are painted with milk paint. The heating is done with ground source heat pumps. PV panels on the southern side meets the electricity need of the house, besides this electricity is used for electrolysis process in order to produce hydrogen. This hydrogen is then used in the fuel cell of the car that the family use. The difficult geometry of the cone is overcome by gathering the facilities like sleeping, sitting, working which need less height on the outer side. The roof level is thought to be a greenhouse and a buffer zone for heating and cooling purposes. The gray water is decomposed here by the help of plants and snails. This water is then pumped back to the wet land in front of the house.

2004 - competition finalist