It was calculated energy performance of residential building which meets the requirements for heat-transfer rate for the building envelope, then the result was compared with the values of the maximum primary energy demand for heating, ventilation and usable water heating, for predicted time schedule (years: 2014, 2017, 2021) presented in a draft regulation on technical conditions obligatory for buildings and their location. Calculations were made for three variants of heating, i.e.: gas, coal and biomass. In addition, the calculations considered a variant in which hot water is prepared using a solar panel installation. Meeting performance requirements for buildings after the year 2014, and also after 2017 will be possible if a gas boiler and a biomass boiler are used, independently of solar panel set applied to prepare u.h.w. In case of coal heating, meeting the regulation on PE will be possible if hot water is prepared also by solar panel set. The maximum values of unit coefficient of demand for non-renewable PE after 2021 will cause that building equipped in a coal-fired boiler will not meet the requirements, even if the solar panel set is used for hot water preparation. In the case of heating using gas boiler, meeting regulations will be possible only when hot water will be prepared with a solar panel set.