The elimination of low-emission sources harmful to human health, mainly domestic boilers, has recently grown into a nation-wide problem in Poland. Emissions of harmful substances from power plants are many times lower than from domestic coal furnaces and are subject to strict regulatory regimes. Hence, companies of the professional and thermal power industry can play an important part in the process of liquidation of low emissions by offering to replace the combustion of coal in home furnaces with the use of it for the production of electricity and system heat in electrical cogeneration, which can then be used for home heating purposes. In addition, it is essential for the professional power industry to maintain a constant daily load of power units, so that the loss of efficiency in regulatory work, increased failure frequency or the need for frequent commissioning does not negatively affect the economy of production. Therefore, the selection of the part of the dispersed heat market that can be replaced with system heat and the use of electricity for heating purposes, while contributing to the elimination of low emissions and improving the economy of new energy units by increase their work in the night low demand periods, must be carried out properly.