The article analyzes the problems of environmental pollution and promising directions for the disposal of waste from the production of coal-fired thermal power plants. Possible ways of managing solid waste from coal-fired power plants have been identified in order to preserve the environment. Potential possibilities of using ash in agriculture, in designing the roadways, in manufacturing bricks, as an integral component in Portland cement are considered. The presence of valuable components in the ash creates undoubted prerequisites for its recycling. The authors studied the chemical composition, physical, mechanical and quality indicators of ash – waste products of the Burshtynska thermal power plant (TPP) to study the possibility of using it as a raw material in the production of building materials. It has been determined that according to the chemical composition, the fly ash from the Burshtynska TPP consists of more than 70% of silicium and aluminum oxides. The quality characteristics of ash were assessed by means of calculation with determining the basicity modulus, silicate modulus and quality factor. It was determined that ash from the Burshtynska TPP belonged to acidic, latently active ash. It is proposed to use ash as active mineral additives in raw mixes to obtain ash concrete. For this purpose, the rheological characteristics of a mortar mixture of ash-cement porous concrete compositions was studied, the influence of ash composition on the hydration processes of cement components was investigated, and the quantitative characteristics of this effect were established. The strength of aerated concrete massif was determined depending on the type of raw mixture. The results obtained made it possible to develop technologies for replacing cement with ash in the composition of aerated concrete, to optimize its raw material composition, and determine the kinetic characteristics of hardening processes by introducing chemical additives NaCl and Na2SO4 in order to accelerate hydration processes