A concept of a steam-gas power plant on the basis of a small-size cylindrical steam generator with heat carrier twisting and a turbo-compressor for air compression is suggested. The thermodynamic advantages of the proposed idea for heat-and electric energy users as compared to the existing binary steam-gas plants of small and average heat power are considered, first of all, because of the decrease in heat losses with escaping gases. A considerable reduction in the mass-size characteristics of heat generating equipment and in the capital outlays is also shown.