In this work, the issues of development of high-temperature solar collectors have been discussed. The structure of a newly-developed solar collector, as well as the design parameters of its components and the results of experiments has been described. Collectors of this class are a core part of self-sustained energy supply system for rural buildings and settlements. The newly-designed solar collector is capable to store intensively heat energy in periods of solar energy in excess to the demand and to supply heat and generated electricity in periods when solar energy income is insufficient and collector alone can not sustain system operation. The newly-designed solar collector is an integral part of the entire energy supply system of self-sustained buildings. The energy produced by collector is consumed in the systems of hot water supply, heating, air conditioning, cooling and electric power supply.