The analysis of results of power inspections and search of possible solutions of energy saving and increase of power efficiency of budgetary organizations (kindergartens) taking into account feature of these objects and justification of their economic efficiency is given in article. Calculation of payback periods of the energy saving actions directed on increase of level of thermal protection of external enclosure structures of buildings is given. Economic efficiency of investments in energy saving actions is analyzed and the model allowing to carry out the specified analysis is offered. Recommendations about reduction of payback periods are provided. Article also is devoted definition of optimum, economically well-founded thickness of an insulant in systems of rear ventilated facades. Are resulted thermotechnical and economic calculations. The optimum thickness of the insulant in the given systems is offered.