The specified terms in the summary report "Energy saving" and "Energy Efficiency". Energy saving is considered as a system of organizational measures, technological and technical solutions that provide a reduction in energy consumption and other resources without compromising the quality needed energy consumer. Energy efficiency is largely determined by economic and other quantitative characteristics obtained as a result of the implementation arrangements, technological and technical solutions that provide a reduction in energy consumption, water and other resources in relation to the volume of products and services. It takes into account that the energy efficiency of any building depends on a combination of factors such as: architecture, insulation, air tightness, ventilation and quality of design and technological solutions and the execution of works. In conclusion, it is stated that by using energy conservation principles, it is possible to significantly improve energy efficiency, and ideally design the building with a zero energy balance.