Comparative Analysis of Efficiency Energy Saving Solutions Implemented in the Buildings

Comparative analysis of various energy-saving solutions implemented in the existing engineering systems of buildings was carried out. The analysis was based on an improved discounted method combining the indicators of the classical method (the net value, profitability index, internal rate of return and discounted payback period) and the breakeven criterion which considers technical features of various energy saving technologies. The research was conducted on one of the health care institution facilities with nine options of engineering systems modernization. The author's tool for assessing energy-saving technologies implementation effectiveness allowed not only to evaluate individual decisions, but also to compare and rank them according to the breakeven rate for the efficiency implementation decline. Obtained results can be used as a separate part of the building modernization feasibility study.