Abstract: A solar heat collector and storage system for a residential or other building, is provided which comprises an insulated receptacle in the form of a storage tank, which is preferably buried in the ground adjacent to the building, and which contains a liquid solution which has a relatively low freezing point and a relatively high boiling point, and which will not readily evaporate. The liquid solution may, for example, be water and calcium chloride. The liquid solution in the storage tank is pumped to an upper position on the roof of the building, and it is permitted to flow freely over the roof to a lower position, while exposed to the atmosphere, to be heated by the sun during its travel across the roof. The heated liquid solution is collected at the lower position on the roof and returned to the storage tank. The heated liquid solution in the storage tank may be used in any appropriate manner to derive the energy stored in the liquid solution.