A solar energy-powered heating and cooling system for buildings, including solar energy tiles attached to a roof or an outside surface of walls of a building, an energy collector used to concentrate energy collected by the solar energy tiles, an energy converter activating solar energy into another form of energy, supply pipes hidden inside cavity floor and/or hollow walls and containing a flow medium, and an intelligent control unit. The solar energy collected by the solar energy tiles is brought to the energy collector and then converted via the energy converter. The energy is instilled into the flow medium that is subsequently transferred to the cavity floor and/or hollow walls via the supply pipes so as to either heat up or cool down the building. The process is controlled by the intelligent control unit.