The house is built on a hill with good view to Akashi Kaikyo Bridge which is near to the shore at the north end of Awaji island. The client requested ZEH(zero energy house) which used a natural energy and local material to the maximum at a place in proximity to the city and nature. A digital technology using the environmental simulation and the order made Kawara louver by the collaboration with the local Awaji Kawara craftsman create rich semi-outdoors space covered in the shade. We investigated various energy to be underlying around air-conditioning which circulated geothermal energy of 50m below ground and hot water supply using the solar energy which gathered in the pool and realized zero energy by using them to the maximum.