High energy efficiency house that reaches energy consumption levels close to zero. To achieve this goal the house has been very well insulated in all its components, it has an extremely efficient summer-winter air-conditioning system, both during generation and distribution of the heating or cooling fluid, integrated by mechanical ventilation. The villa was designed by separating the load-bearing structure from the perimeter buffer structure. Walls has been built by dry construction system. The sleeping area and the garage, have a flat roof and a green roof was built above the insulation and waterproofing layers, with water accumulation, the vegetative layer and natural greening. The house was not connected to the gas network because it uses an electric heat pump for both heating and cooling, this energy is produced by a 6 kW photovoltaic system, the building's true clean energy engine. The need to optimize photovoltaic energy production, given the orientation of the lot, suggested turning the volume of the house containing the living area by 30 ° to the south, delivering maximum efficiency to the solar panel system.